Adding upstream version 4:24.2.0.upstream/4%24.2.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2259 insertions, 0 deletions

diff --git a/external/redland/rasqal/rasqal.h b/external/redland/rasqal/rasqal.h
new file mode 100644
index 0000000000..cd5d646043
--- /dev/null
+++ b/external/redland/rasqal/rasqal.h
@@ -0,0 +1,2259 @@
+/* -*- Mode: c; c-basic-offset: 2 -*-
+ *
+ * rasqal.h - Rasqal RDF Query library interfaces and definition
+ *
+ * Copyright (C) 2003-2010, David Beckett http://www.dajobe.org/
+ * Copyright (C) 2003-2005, University of Bristol, UK http://www.bristol.ac.uk/
+ *
+ * This package is Free Software and part of Redland http://librdf.org/
+ *
+ * It is licensed under the following three licenses as alternatives:
+ *   1. GNU Lesser General Public License (LGPL) V2.1 or any newer version
+ *   2. GNU General Public License (GPL) V2 or any newer version
+ *   3. Apache License, V2.0 or any newer version
+ *
+ * You may not use this file except in compliance with at least one of
+ * the above three licenses.
+ *
+ * See LICENSE.html or LICENSE.txt at the top of this package for the
+ * complete terms and further detail along with the license texts for
+ * the licenses in COPYING.LIB, COPYING and LICENSE-2.0.txt respectively.
+ *
+ */
+
+
+
+#ifndef RASQAL_H
+#define RASQAL_H
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/**
+ * RASQAL_VERSION:
+ *
+ * Rasqal library version number
+ *
+ * Format: major * 10000 + minor * 100 + release
+ */
+#define RASQAL_VERSION 933
+
+/**
+ * RASQAL_VERSION_STRING:
+ *
+ * Rasqal library version string
+ */
+#define RASQAL_VERSION_STRING "0.9.33"
+
+/**
+ * RASQAL_VERSION_MAJOR:
+ *
+ * Rasqal library major version
+ */
+#define RASQAL_VERSION_MAJOR 0
+
+/**
+ * RASQAL_VERSION_MINOR:
+ *
+ * Rasqal library minor version
+ */
+#define RASQAL_VERSION_MINOR 9
+
+/**
+ * RASQAL_VERSION_RELEASE:
+ *
+ * Rasqal library release
+ */
+#define RASQAL_VERSION_RELEASE 33
+
+
+/**
+ * RASQAL_API:
+ *
+ * Macro for wrapping API function call declarations.
+ *
+ */
+#ifndef RASQAL_API
+#  ifdef _WIN32
+#    ifdef __GNUC__
+#      undef _declspec
+#      define _declspec(x) __declspec(x)
+#    endif
+#    ifdef RASQAL_STATIC
+#      define RASQAL_API
+#    else
+#      ifdef RASQAL_INTERNAL
+#        define RASQAL_API _declspec(dllexport)
+#      else
+#        define RASQAL_API _declspec(dllimport)
+#      endif
+#    endif
+#  else
+#    define RASQAL_API
+#  endif
+#endif
+
+/* Use gcc 3.1+ feature to allow marking of deprecated API calls.
+ * This gives a warning during compiling.
+ */
+#if ( __GNUC__ == 3 && __GNUC_MINOR__ > 0 ) || __GNUC__ > 3
+#define RASQAL_DEPRECATED __attribute__((deprecated))
+#else
+#define RASQAL_DEPRECATED
+#endif
+
+
+#ifndef LIBRDF_OBJC_FRAMEWORK
+#include <raptor.h>
+#else
+#include <Redland/raptor.h>
+#endif
+
+#if 0
+#include <sys/time.h>
+#endif
+#if 1
+#include <time.h>
+#endif
+
+/* Public statics */
+
+/**
+ * rasqal_short_copyright_string:
+ *
+ * Short copyright string (one line).
+ */
+RASQAL_API
+extern const char * const rasqal_short_copyright_string;
+
+/**
+ * rasqal_copyright_string:
+ *
+ * Copyright string (multiple lines).
+ */
+RASQAL_API
+extern const char * const rasqal_copyright_string;
+
+/**
+ * rasqal_version_string:
+ *
+ * Rasqal version as a string.
+ */
+RASQAL_API
+extern const char * const rasqal_version_string;
+
+/**
+ * rasqal_version_major:
+ *
+ * Rasqal major version number.
+ */
+RASQAL_API
+extern const unsigned int rasqal_version_major;
+
+/**
+ * rasqal_version_minor:
+ *
+ * Rasqal minor version number.
+ */
+RASQAL_API
+extern const unsigned int rasqal_version_minor;
+
+/**
+ * rasqal_version_release:
+ *
+ * Rasqal release version number.
+ */
+RASQAL_API
+extern const unsigned int rasqal_version_release;
+
+/**
+ * rasqal_version_decimal:
+ *
+ * Rasqal version as a decimal number.
+ *
+ * Format: major * 10000 + minor * 100 + release
+ */
+RASQAL_API
+extern const unsigned int rasqal_version_decimal;
+
+/**
+ * rasqal_license_string:
+ *
+ * Rasqal license string.
+ */
+RASQAL_API
+extern const char * const rasqal_license_string;
+
+/**
+ * rasqal_home_url_string:
+ *
+ * Rasqal home page URL.
+ */
+RASQAL_API
+extern const char * const rasqal_home_url_string;
+
+
+
+/**
+ * RASQAL_RAPTOR_VERSION:
+ *
+ * Version of Raptor that Rasqal was configured against.
+ */
+#define RASQAL_RAPTOR_VERSION 20015
+
+
+/* Public structures */
+
+#ifndef RASQAL_WORLD_DECLARED
+#define RASQAL_WORLD_DECLARED 1
+/**
+ * rasqal_world:
+ *
+ * Rasqal world class.
+ */
+typedef struct rasqal_world_s rasqal_world;
+#endif
+
+/**
+ * rasqal_query:
+ *
+ * Rasqal query class.
+ */
+typedef struct rasqal_query_s rasqal_query;
+
+/**
+ * rasqal_query_results:
+ *
+ * Rasqal query results class.
+ */
+typedef struct rasqal_query_results_s rasqal_query_results;
+
+
+#ifndef RASQAL_QUERY_RESULTS_FORMATTER_DECLARED
+#define RASQAL_QUERY_RESULTS_FORMATTER_DECLARED 1
+/**
+ * rasqal_query_results_formatter:
+ *
+ * Rasqal query results formatter class.
+ */
+typedef struct rasqal_query_results_formatter_s rasqal_query_results_formatter;
+#endif
+
+
+typedef struct rasqal_literal_s rasqal_literal;
+
+/**
+ * rasqal_graph_pattern:
+ *
+ * Rasqal graph pattern class.
+ */
+typedef struct rasqal_graph_pattern_s rasqal_graph_pattern;
+
+
+/**
+ * rasqal_variables_table:
+ *
+ * Rasqal variables table class.
+ */
+typedef struct rasqal_variables_table_s rasqal_variables_table;
+
+
+/**
+ * rasqal_feature:
+ * @RASQAL_FEATURE_NO_NET: Deny network requests.
+ * @RASQAL_FEATURE_RAND_SEED: Set rand() / rand_r() seed
+ * @RASQAL_FEATURE_LAST: Internal.
+ *
+ * Query features.
+ *
+ * None currently defined.
+ */
+typedef enum {
+  RASQAL_FEATURE_NO_NET,
+  RASQAL_FEATURE_RAND_SEED,
+  RASQAL_FEATURE_LAST = RASQAL_FEATURE_RAND_SEED
+} rasqal_feature;
+
+
+/**
+ * rasqal_prefix:
+ * @world: rasqal_world object
+ * @prefix: short prefix string
+ * @uri: URI associated with the prefix.
+ * @declared: Internal flag.
+ * @depth: Internal flag.
+ *
+ * Namespace (prefix, uri) pair.
+ *
+ * Includes internal flags used for marking when prefixes are
+ * declared and at what XML element depth when used in XML formats.
+ */
+typedef struct {
+  rasqal_world* world;
+  const unsigned char *prefix;
+  raptor_uri* uri;
+  int declared;
+  int depth;
+} rasqal_prefix;
+
+
+/**
+ * rasqal_variable_type:
+ * @RASQAL_VARIABLE_TYPE_NORMAL: The regular variable type.
+ * @RASQAL_VARIABLE_TYPE_ANONYMOUS: Anonymous variable type.
+ * @RASQAL_VARIABLE_TYPE_UNKNOWN: Internal.
+ *
+ * Rasqal variable types.
+ *
+ * ANONYMOUS can be used in queries but cannot be returned in a
+ * result.
+ */
+typedef enum {
+  RASQAL_VARIABLE_TYPE_UNKNOWN   = 0,
+  RASQAL_VARIABLE_TYPE_NORMAL    = 1,
+  RASQAL_VARIABLE_TYPE_ANONYMOUS = 2
+} rasqal_variable_type;
+
+
+/* forward reference */
+struct rasqal_expression_s;
+
+/**
+ * rasqal_variable:
+ * @vars_table: variables table that owns this variable
+ * @name: Variable name.
+ * @value: Variable value or NULL if unbound.
+ * @offset: Internal.
+ * @type: Variable type.
+ * @expression: Expression when the variable is a computed SELECT expression
+ * @user_data: Pointer to user data associated with a variable.  This is not used by rasqal.
+ * @usage: reference count
+ *
+ * Binding between a variable name and a value.
+ *
+ * Includes internal field @offset for recording the offset into the
+ * (internal) rasqal_query variables array.
+ */
+typedef struct {
+  rasqal_variables_table* vars_table;
+  const unsigned char *name;
+  rasqal_literal* value;
+  int offset;
+  rasqal_variable_type type;
+  struct rasqal_expression_s* expression;
+  void *user_data;
+  int usage;
+} rasqal_variable;
+
+
+/**
+ * rasqal_data_graph_flags:
+ * @RASQAL_DATA_GRAPH_NONE: Internal.
+ * @RASQAL_DATA_GRAPH_NAMED: Graphs with a source and name.
+ * @RASQAL_DATA_GRAPH_BACKGROUND: Graphs with a source only.
+ *
+ * Flags for the type of #rasqal_data_graph.
+ *
+ * These are used by rasqal_new_data_graph_from_uri() and
+ * rasqal_new_data_graph_from_iostream().  See #rasqal_data_graph.
+ */
+typedef enum {
+  RASQAL_DATA_GRAPH_NONE  = 0,
+  RASQAL_DATA_GRAPH_NAMED = 1,
+  RASQAL_DATA_GRAPH_BACKGROUND = 2
+} rasqal_data_graph_flags;
+
+
+/**
+ * rasqal_data_graph:
+ * @world: rasqal_world object
+ * @uri: source URI
+ * @name_uri: name of graph for %RASQAL_DATA_GRAPH_NAMED
+ * @flags: %RASQAL_DATA_GRAPH_NAMED or %RASQAL_DATA_GRAPH_BACKGROUND
+ * @format_type: MIME Type of data format at @uri (or NULL)
+ * @format_name: Raptor parser Name of data format at @uri (or NULL)
+ * @format_uri: URI of data format at @uri (or NULL)
+ * @iostr: Raptor iostream for content, overriding @uri if present (or NULL)
+ * @base_uri: base URI for reading from iostream
+ * @usage: usage count of this object
+ *
+ * A source of RDF data for querying.
+ *
+ * If @iostr is present, the graph can be constructed by parsing the
+ * iostream and using @base_uri as a base uri. Otherwise the graph
+ * can be constructed from the graph at URI @uri.
+ *
+ * In either case the @name_uri is the graph name as long as @flags
+ * is %RASQAL_DATA_GRAPH_NAMED
+ */
+typedef struct {
+  rasqal_world* world;
+  raptor_uri* uri;
+  raptor_uri* name_uri;
+  unsigned int flags;
+  char* format_type;
+  char* format_name;
+  raptor_uri* format_uri;
+  raptor_iostream* iostr;
+  raptor_uri* base_uri;
+  int usage;
+} rasqal_data_graph;
+
+
+/**
+ * rasqal_literal_type:
+ * @RASQAL_LITERAL_BLANK: RDF blank node literal (SPARQL r:bNode)
+ * @RASQAL_LITERAL_URI: RDF URI Literal (SPARQL r:URI)
+ * @RASQAL_LITERAL_STRING: RDF Plain Literal - no datatype (SPARQL r:Literal)
+ * @RASQAL_LITERAL_XSD_STRING: String xsd:string
+ * @RASQAL_LITERAL_BOOLEAN: Boolean literal xsd:boolean.
+ * @RASQAL_LITERAL_INTEGER: Integer literal xsd:integer.
+ * @RASQAL_LITERAL_DOUBLE: Double floating point literal xsd:double.
+ * @RASQAL_LITERAL_FLOAT: Floating point literal xsd:float.
+ * @RASQAL_LITERAL_DECIMAL: Decimal integer xsd:decimal.
+ * @RASQAL_LITERAL_DATETIME: Date/Time literal xsd:dateTime.
+ * @RASQAL_LITERAL_UDT: User defined typed literal with unknown datatype URI
+ * @RASQAL_LITERAL_PATTERN: Pattern literal for a regex.
+ * @RASQAL_LITERAL_QNAME: XML Qname literal.
+ * @RASQAL_LITERAL_VARIABLE: Variable literal.
+ * @RASQAL_LITERAL_DATE: Date literal xsd:date.
+ * @RASQAL_LITERAL_INTEGER_SUBTYPE: Internal.
+ * @RASQAL_LITERAL_UNKNOWN: Internal.
+ * @RASQAL_LITERAL_FIRST_XSD: Internal.
+ * @RASQAL_LITERAL_LAST_XSD: Internal.
+ * @RASQAL_LITERAL_LAST: Internal.
+ *
+ * Types of literal.
+ *
+ * The order in the enumeration is significant as it encodes
+ * the SPARQL term ordering conditions:
+ *
+ *   Blank Nodes << IRIs << RDF literals << typed literals
+ *
+ * which coresponds to in enum values
+ *
+ *   BLANK << URI << STRING <<
+ *     (BOOLEAN | INTEGER | DOUBLE | FLOAT | DECIMAL | DATETIME | XSD_STRING)
+ *
+ *     (RASQAL_LITERAL_FIRST_XSD ... RASQAL_LITERAL_LAST_XSD)
+ *
+ * Not used (internal): PATTERN, QNAME, VARIABLE
+ *
+ * See rasqal_literal_compare() when used with flags
+ * %RASQAL_COMPARE_XQUERY
+ */
+typedef enum {
+  /* internal */
+  RASQAL_LITERAL_UNKNOWN,
+  RASQAL_LITERAL_BLANK,
+  RASQAL_LITERAL_URI,
+  RASQAL_LITERAL_STRING,
+  RASQAL_LITERAL_XSD_STRING,
+  RASQAL_LITERAL_BOOLEAN,
+  RASQAL_LITERAL_INTEGER,
+  RASQAL_LITERAL_FLOAT,
+  RASQAL_LITERAL_DOUBLE,
+  RASQAL_LITERAL_DECIMAL,
+  RASQAL_LITERAL_DATETIME,
+  /* internal */
+  RASQAL_LITERAL_FIRST_XSD = RASQAL_LITERAL_XSD_STRING,
+  /* internal */
+  RASQAL_LITERAL_LAST_XSD = RASQAL_LITERAL_DATETIME,
+  RASQAL_LITERAL_UDT,
+  RASQAL_LITERAL_PATTERN,
+  RASQAL_LITERAL_QNAME,
+  RASQAL_LITERAL_VARIABLE,
+  /* internal */
+  RASQAL_LITERAL_INTEGER_SUBTYPE,
+  RASQAL_LITERAL_DATE,
+  /* internal */
+  RASQAL_LITERAL_LAST = RASQAL_LITERAL_DATE
+} rasqal_literal_type;
+
+#define RASQAL_LITERAL_UDT_DEFINED 1
+
+
+/**
+ * rasqal_row:
+ *
+ * Rasqal Result Row class.
+ */
+typedef struct rasqal_row_s rasqal_row;
+
+
+/**
+ * rasqal_xsd_decimal:
+ *
+ * Rasqal XSD Decimal class.
+ */
+typedef struct rasqal_xsd_decimal_s rasqal_xsd_decimal;
+
+
+/**
+ * RASQAL_XSD_DATETIME_NO_TZ:
+ *
+ * Sentinel XSD Decimal timezone value indicating no timezone is present.
+ */
+#define RASQAL_XSD_DATETIME_NO_TZ (9999)
+
+/**
+ * rasqal_xsd_date:
+ * @year: year
+ * @month: month 1-12
+ * @day: 1-31
+ * @timezone_minutes: minutes +/- against UTC or RASQAL_XSD_DATETIME_NO_TZ if there is no timezone in the dateTime.
+ * @time_on_timeline: time on timeline of first instant of date in timezone
+ * @have_tz: timezone flag: 'Z' if Zulu, 'Y' if has other timezone offset in @timezone_minutes, 'N' if there is no timezone
+ *
+ * XML schema date datatype (xsd:date)
+ *
+ * Examples of timezone fields:
+ *  "2010-01-02" : timezone_minutes RASQAL_XSD_DATETIME_NO_TZ, have_tz 'N'
+ *  "2010-01-02Z" : timezone_minutes 0, have_tz 'Z'
+ *  "2010-01-02+00:00" : timezone_minutes 0, have_tz 'Y'
+ *  "2010-01-02-01:00" : timezone_minutes -60, have_tz 'Y'
+ */
+typedef struct {
+  signed int year;
+  /* the following fields are integer values not characters */
+  unsigned char month;
+  unsigned char day;
+  signed short timezone_minutes;
+  time_t time_on_timeline;
+  char have_tz;
+} rasqal_xsd_date;
+
+
+/**
+ * rasqal_xsd_datetime:
+ * @year: year
+ * @month: month 1-12
+ * @day: 1-31
+ * @hour: hour 0-23
+ * @minute: minute 0-59
+ * @second: second 0-60 (yes 60 is allowed for leap seconds)
+ * @microseconds: microseconds
+ * @timezone_minutes: minutes +/- against UTC or RASQAL_XSD_DATETIME_NO_TZ if there is no timezone in the dateTime.
+ * @time_on_timeline: time on timeline
+ * @have_tz: timezone flag: 'Z' if Zulu, 'Y' if has other timezone offset in @timezone_minutes, 'N' if there is no timezone
+ *
+ * XML Schema dateTime datatype (xsd:dateTime)
+ *
+ * Signed types are required for normalization process where a value
+ * can be negative temporarily.
+ *
+ * Examples of timezone fields:
+ *  "2010-01-02T01:02:03" : timezone_minutes RASQAL_XSD_DATETIME_NO_TZ, have_tz 'N'
+ *  "2010-01-02T01:02:03Z" : timezone_minutes 0, have_tz 'Z'
+ *  "2010-01-02T01:02:03+00:00" : timezone_minutes 0, have_tz 'Y'
+ *  "2010-01-02T01:02:03-01:00" : timezone_minutes -60, have_tz 'Y'
+ */
+typedef struct {
+  signed int year;
+  unsigned char month;
+  unsigned char day;
+  /* the following fields are integer values not characters */
+  signed char hour;
+  signed char minute;
+  signed char second;
+  signed int microseconds;
+  signed short timezone_minutes;
+  time_t time_on_timeline;
+  char have_tz;
+} rasqal_xsd_datetime;
+
+
+/**
+ * rasqal_literal:
+ * @world: world object pointer
+ * @usage: Usage count.
+ * @type: Type of literal.
+ * @string: String form of literal for literal types UTF-8 string, pattern, qname, blank, double, float, decimal, datetime.
+ * @string_len: Length of @string.
+ * @value: Alternate value content.
+ * @language: Language for string literal type.
+ * @datatype: Datatype for string literal type.
+ * @flags: Flags for literal types
+ * @parent_type: parent XSD type if any or RASQAL_LITERAL_UNKNOWN
+ * @valid: >0 if literal format is a valid lexical form for this datatype. 0 if not valid. <0 if this has not been checked yet
+ *
+ * Rasqal literal class.
+ *
+ */
+struct rasqal_literal_s {
+  rasqal_world *world;
+
+  int usage;
+
+  rasqal_literal_type type;
+
+  /* UTF-8 string, pattern, qname, blank, double, float, decimal, datetime */
+  const unsigned char *string;
+  unsigned int string_len;
+
+  union {
+    /* integer and boolean types */
+    int integer;
+    /* double and float */
+    double floating;
+    /* uri (can be temporarily NULL if a qname, see flags below) */
+    raptor_uri* uri;
+    /* variable */
+    rasqal_variable* variable;
+    /* decimal */
+    rasqal_xsd_decimal* decimal;
+    /* datetime  */
+    rasqal_xsd_datetime* datetime;
+    /* date  */
+    rasqal_xsd_date* date;
+  } value;
+
+  /* for string */
+  char *language;
+  raptor_uri *datatype;
+
+  /* various flags for literal types:
+   *  pattern  regex flags
+   *  string   datatype of qname
+   *  uri      qname of URI not yet expanded (temporary)
+   */
+  const unsigned char *flags;
+
+  rasqal_literal_type parent_type;
+
+  int valid;
+};
+
+
+/**
+ * rasqal_op:
+ * @RASQAL_EXPR_AND: Expression for AND(A, B)
+ * @RASQAL_EXPR_OR: Expression for OR(A, B)
+ * @RASQAL_EXPR_EQ: Expression for A equals B
+ * @RASQAL_EXPR_NEQ: Expression for A not equals B.
+ * @RASQAL_EXPR_LT: Expression for A less than B.
+ * @RASQAL_EXPR_GT: Expression for A greather than B.
+ * @RASQAL_EXPR_LE: Expression for A less than or equal to B.
+ * @RASQAL_EXPR_GE: Expression for A greater than or equal to B.
+ * @RASQAL_EXPR_UMINUS: Expression for -A.
+ * @RASQAL_EXPR_PLUS: Expression for +A.
+ * @RASQAL_EXPR_MINUS: Expression for A-B.
+ * @RASQAL_EXPR_STAR: Expression for A*B.
+ * @RASQAL_EXPR_SLASH: Expression for A/B.
+ * @RASQAL_EXPR_REM: Expression for A/B remainder.
+ * @RASQAL_EXPR_STR_EQ: Expression for A string equals B.
+ * @RASQAL_EXPR_STR_NEQ: Expression for A string not-equals B.
+ * @RASQAL_EXPR_STR_MATCH: Expression for string A matches literal regex B with flags.
+ * @RASQAL_EXPR_STR_NMATCH: Expression for string A not-matches literal regex B with flags.
+ * @RASQAL_EXPR_REGEX: Expression for string A matches expression regex B with flags.
+ * @RASQAL_EXPR_TILDE: Expression for binary not A.
+ * @RASQAL_EXPR_BANG: Expression for logical not A.
+ * @RASQAL_EXPR_LITERAL: Expression for a #rasqal_literal.
+ * @RASQAL_EXPR_FUNCTION: Expression for a function A with arguments (B...).
+ * @RASQAL_EXPR_BOUND: Expression for SPARQL ISBOUND(A).
+ * @RASQAL_EXPR_STR: Expression for SPARQL STR(A).
+ * @RASQAL_EXPR_LANG: Expression for SPARQL LANG(A).
+ * @RASQAL_EXPR_LANGMATCHES: Expression for SPARQL LANGMATCHES(A, B).
+ * @RASQAL_EXPR_DATATYPE: Expression for SPARQL DATATYPE(A).
+ * @RASQAL_EXPR_ISURI: Expression for SPARQL ISURI(A).
+ * @RASQAL_EXPR_ISBLANK: Expression for SPARQL ISBLANK(A).
+ * @RASQAL_EXPR_ISLITERAL: Expression for SPARQL ISLITERAL(A).
+ * @RASQAL_EXPR_CAST: Expression for cast literal A to type B.
+ * @RASQAL_EXPR_ORDER_COND_ASC: Expression for SPARQL order condition ascending.
+ * @RASQAL_EXPR_ORDER_COND_DESC: Expression for SPARQL order condition descending.
+ * @RASQAL_EXPR_GROUP_COND_ASC: Obsolete - not used
+ * @RASQAL_EXPR_GROUP_COND_DESC: Obsolete - not used
+ * @RASQAL_EXPR_COUNT: Expression for LAQRS select COUNT() aggregate function
+ * @RASQAL_EXPR_VARSTAR: Expression for LAQRS select Variable *
+ * @RASQAL_EXPR_SAMETERM: Expression for SPARQL sameTerm
+ * @RASQAL_EXPR_SUM: Expression for LAQRS select SUM() aggregate function
+ * @RASQAL_EXPR_AVG: Expression for LAQRS select AVG() aggregate function
+ * @RASQAL_EXPR_MIN: Expression for LAQRS select MIN() aggregate function
+ * @RASQAL_EXPR_MAX: Expression for LAQRS select MAX() aggregate function
+ * @RASQAL_EXPR_COALESCE: Expression for LAQRS COALESCE(Expr+)
+ * @RASQAL_EXPR_IF: Expression for LAQRS IF(expr, expr, expr)
+ * @RASQAL_EXPR_URI: Expression for LAQRS URI(expr)
+ * @RASQAL_EXPR_IRI: Expression for LAQRS IRI(expr)
+ * @RASQAL_EXPR_STRLANG: Expression for LAQRS STRLANG(expr, expr)
+ * @RASQAL_EXPR_STRDT: Expression for LAQRS STRDT(expr, expr)
+ * @RASQAL_EXPR_BNODE: Expression for LAQRS BNODE() and BNODE(expr)
+ * @RASQAL_EXPR_GROUP_CONCAT: Expression for LAQRS GROUP_CONCAT(arglist) aggregate function
+ * @RASQAL_EXPR_SAMPLE: Expression for LAQRS SAMPLE(expr) aggregate function
+ * @RASQAL_EXPR_IN: Expression for LAQRS expr IN ( list of expr )
+ * @RASQAL_EXPR_NOT_IN: Expression for LAQRS expr NOT IN ( list of expr )
+ * @RASQAL_EXPR_ISNUMERIC: Expression for SPARQL 1.1 isNUMERIC(expr)
+ * @RASQAL_EXPR_YEAR: Expression for SPARQL 1.1 YEAR(datetime)
+ * @RASQAL_EXPR_MONTH: Expression for SPARQL 1.1 MONTH(datetime)
+ * @RASQAL_EXPR_DAY: Expression for SPARQL 1.1 DAY(datetime)
+ * @RASQAL_EXPR_HOURS: Expression for SPARQL 1.1 HOURS(datetime)
+ * @RASQAL_EXPR_MINUTES: Expression for SPARQL 1.1 MINUTES(datetime)
+ * @RASQAL_EXPR_SECONDS: Expression for SPARQL 1.1 SECONDS(datetime)
+ * @RASQAL_EXPR_TIMEZONE: Expression for SPARQL 1.1 TIMEZONE(datetime)
+ * @RASQAL_EXPR_CURRENT_DATETIME: Expression for LAQRS CURRENT_DATETIME( void )
+ * @RASQAL_EXPR_NOW: Expression for LAQRS NOW( void )
+ * @RASQAL_EXPR_FROM_UNIXTIME: Expression for LAQRS FROM_UNIXTIME(int)
+ * @RASQAL_EXPR_TO_UNIXTIME: Expression for LAQRS TO_UNIXTIME(datetime)
+ * @RASQAL_EXPR_CONCAT: Expression for SPARQL 1.1 CONCAT(strings)
+ * @RASQAL_EXPR_STRLEN: Expression for SPARQL 1.1 STRLEN(str)
+ * @RASQAL_EXPR_SUBSTR: Expression for SPARQL 1.1 SUBSTR(str, start[,offset])
+ * @RASQAL_EXPR_UCASE: Expression for SPARQL 1.1 UCASE(str)
+ * @RASQAL_EXPR_LCASE: Expression for SPARQL 1.1 LCASE(str)
+ * @RASQAL_EXPR_STRSTARTS: Expression for SPARQL 1.1 STRSTARTS(str, str)
+ * @RASQAL_EXPR_STRENDS: Expression for SPARQL 1.1 STRENDS(str, str)
+ * @RASQAL_EXPR_CONTAINS: Expression for SPARQL 1.1 CONTAINS(str, str)
+ * @RASQAL_EXPR_ENCODE_FOR_URI: Expression for SPARQL 1.1 ENCODE_FOR_URI(str)
+ * @RASQAL_EXPR_TZ: Expression for SPARQL 1.1 TZ()
+ * @RASQAL_EXPR_RAND: Expression for SPARQL 1.1 RAND()
+ * @RASQAL_EXPR_ABS: Expression for SPARQL 1.1 ABS()
+ * @RASQAL_EXPR_ROUND: Expression for SPARQL 1.1 ROUND()
+ * @RASQAL_EXPR_CEIL: Expression for SPARQL 1.1 CEIL()
+ * @RASQAL_EXPR_FLOOR: Expression for SPARQL 1.1 FLOOR()
+ * @RASQAL_EXPR_MD5: Expression for SPARQL 1.1 MD5()
+ * @RASQAL_EXPR_SHA1: Expression for SPARQL 1.1 SHA1()
+ * @RASQAL_EXPR_SHA224: Expression for SPARQL 1.1 SHA224()
+ * @RASQAL_EXPR_SHA256: Expression for SPARQL 1.1 SHA256()
+ * @RASQAL_EXPR_SHA384: Expression for SPARQL 1.1 SHA384()
+ * @RASQAL_EXPR_SHA512: Expression for SPARQL 1.1 SHA512()
+ * @RASQAL_EXPR_STRBEFORE: Expression for SPARQL 1.1 STRBEFORE()
+ * @RASQAL_EXPR_STRAFTER: Expression for SPARQL 1.1 STRAFTER()
+ * @RASQAL_EXPR_REPLACE: Expression for SPARQL 1.1 REPLACE()
+ * @RASQAL_EXPR_UUID: Expression for SPARQL 1.1 UUID()
+ * @RASQAL_EXPR_STRUUID: Expression for SPARQL 1.1 STRUUID()
+ * @RASQAL_EXPR_UNKNOWN: Internal
+ * @RASQAL_EXPR_LAST: Internal
+ *
+ * Rasqal expression operators.  A mixture of unary, binary and
+ * tertiary operators (string matches).  Also includes casting and
+ * two ordering operators from ORDER BY in SPARQL.
+ */
+typedef enum {
+  /* internal */
+  RASQAL_EXPR_UNKNOWN,
+  RASQAL_EXPR_AND,
+  RASQAL_EXPR_OR,
+  RASQAL_EXPR_EQ,
+  RASQAL_EXPR_NEQ,
+  RASQAL_EXPR_LT,
+  RASQAL_EXPR_GT,
+  RASQAL_EXPR_LE,
+  RASQAL_EXPR_GE,
+  RASQAL_EXPR_UMINUS,
+  RASQAL_EXPR_PLUS,
+  RASQAL_EXPR_MINUS,
+  RASQAL_EXPR_STAR,
+  RASQAL_EXPR_SLASH,
+  RASQAL_EXPR_REM,
+  RASQAL_EXPR_STR_EQ,
+  RASQAL_EXPR_STR_NEQ,
+  RASQAL_EXPR_STR_MATCH,
+  RASQAL_EXPR_STR_NMATCH,
+  RASQAL_EXPR_TILDE,
+  RASQAL_EXPR_BANG,
+  RASQAL_EXPR_LITERAL,
+  RASQAL_EXPR_FUNCTION,
+  RASQAL_EXPR_BOUND,
+  RASQAL_EXPR_STR,
+  RASQAL_EXPR_LANG,
+  RASQAL_EXPR_DATATYPE,
+  RASQAL_EXPR_ISURI,
+  RASQAL_EXPR_ISBLANK,
+  RASQAL_EXPR_ISLITERAL,
+  RASQAL_EXPR_CAST,
+  RASQAL_EXPR_ORDER_COND_ASC,
+  RASQAL_EXPR_ORDER_COND_DESC,
+  RASQAL_EXPR_LANGMATCHES,
+  RASQAL_EXPR_REGEX,
+  RASQAL_EXPR_GROUP_COND_ASC,
+  RASQAL_EXPR_GROUP_COND_DESC,
+  RASQAL_EXPR_COUNT,
+  RASQAL_EXPR_VARSTAR,
+  RASQAL_EXPR_SAMETERM,
+  RASQAL_EXPR_SUM,
+  RASQAL_EXPR_AVG,
+  RASQAL_EXPR_MIN,
+  RASQAL_EXPR_MAX,
+  RASQAL_EXPR_COALESCE,
+  RASQAL_EXPR_IF,
+  RASQAL_EXPR_URI,
+  RASQAL_EXPR_IRI,
+  RASQAL_EXPR_STRLANG,
+  RASQAL_EXPR_STRDT,
+  RASQAL_EXPR_BNODE,
+  RASQAL_EXPR_GROUP_CONCAT,
+  RASQAL_EXPR_SAMPLE,
+  RASQAL_EXPR_IN,
+  RASQAL_EXPR_NOT_IN,
+  RASQAL_EXPR_ISNUMERIC,
+  RASQAL_EXPR_YEAR,
+  RASQAL_EXPR_MONTH,
+  RASQAL_EXPR_DAY,
+  RASQAL_EXPR_HOURS,
+  RASQAL_EXPR_MINUTES,
+  RASQAL_EXPR_SECONDS,
+  RASQAL_EXPR_TIMEZONE,
+  RASQAL_EXPR_CURRENT_DATETIME,
+  RASQAL_EXPR_NOW,
+  RASQAL_EXPR_FROM_UNIXTIME,
+  RASQAL_EXPR_TO_UNIXTIME,
+  RASQAL_EXPR_CONCAT,
+  RASQAL_EXPR_STRLEN,
+  RASQAL_EXPR_SUBSTR,
+  RASQAL_EXPR_UCASE,
+  RASQAL_EXPR_LCASE,
+  RASQAL_EXPR_STRSTARTS,
+  RASQAL_EXPR_STRENDS,
+  RASQAL_EXPR_CONTAINS,
+  RASQAL_EXPR_ENCODE_FOR_URI,
+  RASQAL_EXPR_TZ,
+  RASQAL_EXPR_RAND,
+  RASQAL_EXPR_ABS,
+  RASQAL_EXPR_ROUND,
+  RASQAL_EXPR_CEIL,
+  RASQAL_EXPR_FLOOR,
+  RASQAL_EXPR_MD5,
+  RASQAL_EXPR_SHA1,
+  RASQAL_EXPR_SHA224,
+  RASQAL_EXPR_SHA256,
+  RASQAL_EXPR_SHA384,
+  RASQAL_EXPR_SHA512,
+  RASQAL_EXPR_STRBEFORE,
+  RASQAL_EXPR_STRAFTER,
+  RASQAL_EXPR_REPLACE,
+  RASQAL_EXPR_UUID,
+  RASQAL_EXPR_STRUUID,
+  /* internal */
+  RASQAL_EXPR_LAST = RASQAL_EXPR_STRUUID
+} rasqal_op;
+
+
+/**
+ * rasqal_expression_flags:
+ * @RASQAL_EXPR_FLAG_DISTINCT: Distinct
+ * @RASQAL_EXPR_FLAG_AGGREGATE: Aggregate function expression
+ *
+ * Flags for expressions.
+ */
+typedef enum {
+  RASQAL_EXPR_FLAG_DISTINCT = 1,
+  RASQAL_EXPR_FLAG_AGGREGATE = 2
+} rasqal_expression_flags;
+
+
+/**
+ * rasqal_expression:
+ * @world: rasqal_world object
+ * @usage: reference count - 1 for itself
+ * @op: expression operation
+ * @arg1: first argument
+ * @arg2: second argument
+ * @arg3: third argument (for #RASQAL_EXPR_REGEX )
+ * @literal: literal argument
+ * @value: UTF-8 value
+ * @name: name for extension function qname(args...) and cast-to-uri
+ * @args: args for extension function qname(args...), cast-to-uri and COALESCE
+ * @params: args for extension function parameters (SPARQL 1.1) (Rasqal 0.9.20+)
+ * @flags: bitflags from #rasqal_expression_flags for expressions (Rasqal 0.9.20+)
+ * @arg4: fourth argument (for #RASQAL_EXPR_REPLACE )
+ *
+ * Expression with arguments
+ *
+ */
+struct rasqal_expression_s {
+  rasqal_world* world;
+
+  int usage;
+
+  rasqal_op op;
+
+  struct rasqal_expression_s* arg1;
+  struct rasqal_expression_s* arg2;
+  struct rasqal_expression_s* arg3;
+  rasqal_literal* literal;
+  unsigned char *value;
+
+  raptor_uri* name;
+  raptor_sequence* args;
+
+  raptor_sequence* params;
+  unsigned int flags;
+  struct rasqal_expression_s* arg4;
+};
+typedef struct rasqal_expression_s rasqal_expression;
+
+
+/**
+ * rasqal_triple:
+ * @subject: Triple subject.
+ * @predicate: Triple predicate.
+ * @object: Triple object.
+ * @origin: Triple origin.
+ * @flags: Or of enum #rasqal_triple_flags bits.
+ *
+ * A triple pattern or RDF triple.
+ *
+ * This is used as a triple pattern in queries and
+ * an RDF triple when generating RDF triples such as with SPARQL CONSTRUCT.
+ */
+typedef struct {
+  rasqal_literal* subject;
+  rasqal_literal* predicate;
+  rasqal_literal* object;
+  rasqal_literal* origin;
+  unsigned int flags;
+} rasqal_triple;
+
+
+/**
+ * rasqal_pattern_flags:
+ * @RASQAL_PATTERN_FLAGS_OPTIONAL: True when the graph pattern is an optional match.
+ * @RASQAL_PATTERN_FLAGS_LAST: Internal
+ *
+ * Flags for #rasqal_graph_pattern.
+ */
+typedef enum {
+  RASQAL_PATTERN_FLAGS_OPTIONAL = 1,
+
+  RASQAL_PATTERN_FLAGS_LAST     = RASQAL_PATTERN_FLAGS_OPTIONAL
+} rasqal_pattern_flags;
+
+
+/**
+ * rasqal_generate_bnodeid_handler:
+ * @world: world arg
+ * @user_data: user data given to
+ * @user_bnodeid: user blank node ID string passed in
+ *
+ * User handler used with rasqal_world_set_generate_bnodeid_handler() to set method for generating a blank node ID.
+ *
+ * Return value: blank node ID string or NULL on failure.
+ */
+typedef unsigned char* (*rasqal_generate_bnodeid_handler)(rasqal_world* world, void *user_data, unsigned char *user_bnodeid);
+
+
+/**
+ * rasqal_query_verb:
+ * @RASQAL_QUERY_VERB_SELECT: SPARQL query select verb.
+ * @RASQAL_QUERY_VERB_CONSTRUCT: SPARQL query construct verb.
+ * @RASQAL_QUERY_VERB_DESCRIBE: SPARQL query describe verb.
+ * @RASQAL_QUERY_VERB_ASK: SPARQL query ask verb.
+ * @RASQAL_QUERY_VERB_DELETE: LAQRS query delete verb.
+ * @RASQAL_QUERY_VERB_INSERT: LAQRS query insert verb.
+ * @RASQAL_QUERY_VERB_UPDATE: SPARQL 1.1 (draft) update operation
+ * @RASQAL_QUERY_VERB_UNKNOWN: Internal
+ * @RASQAL_QUERY_VERB_LAST: Internal
+ *
+ * Query main operation verbs describing the major type of query
+ * being performed.
+ */
+typedef enum {
+  /* internal */
+  RASQAL_QUERY_VERB_UNKNOWN   = 0,
+  RASQAL_QUERY_VERB_SELECT    = 1,
+  RASQAL_QUERY_VERB_CONSTRUCT = 2,
+  RASQAL_QUERY_VERB_DESCRIBE  = 3,
+  RASQAL_QUERY_VERB_ASK       = 4,
+  RASQAL_QUERY_VERB_DELETE    = 5,
+  RASQAL_QUERY_VERB_INSERT    = 6,
+  RASQAL_QUERY_VERB_UPDATE    = 7,
+
+  /* internal */
+  RASQAL_QUERY_VERB_LAST = RASQAL_QUERY_VERB_UPDATE
+} rasqal_query_verb;
+
+
+/**
+ * rasqal_query_results_type:
+ * @RASQAL_QUERY_RESULTS_BINDINGS: variable binding
+ * @RASQAL_QUERY_RESULTS_BOOLEAN: a single boolean
+ * @RASQAL_QUERY_RESULTS_GRAPH: an RDF graph
+ * @RASQAL_QUERY_RESULTS_SYNTAX: a syntax
+ * @RASQAL_QUERY_RESULTS_UNKNOWN: unknown type
+ * @RASQAL_QUERY_RESULTS_LAST: internal
+ *
+ * Query result type.
+ */
+
+typedef enum {
+  RASQAL_QUERY_RESULTS_BINDINGS,
+  RASQAL_QUERY_RESULTS_BOOLEAN,
+  RASQAL_QUERY_RESULTS_GRAPH,
+  RASQAL_QUERY_RESULTS_SYNTAX,
+  RASQAL_QUERY_RESULTS_UNKNOWN,
+  RASQAL_QUERY_RESULTS_LAST = RASQAL_QUERY_RESULTS_UNKNOWN
+} rasqal_query_results_type;
+
+
+/**
+ * rasqal_update_type:
+ * @RASQAL_UPDATE_TYPE_CLEAR: Clear graph.
+ * @RASQAL_UPDATE_TYPE_CREATE: Create graph.
+ * @RASQAL_UPDATE_TYPE_DROP: Drop graph.
+ * @RASQAL_UPDATE_TYPE_LOAD: Load graph.
+ * @RASQAL_UPDATE_TYPE_UPDATE: Insert or Delete graph or triples.
+ * @RASQAL_UPDATE_TYPE_ADD: Add graph to another graph.
+ * @RASQAL_UPDATE_TYPE_MOVE: Move graph to another grpah.
+ * @RASQAL_UPDATE_TYPE_COPY: Copy graph to another graph.
+ * @RASQAL_UPDATE_TYPE_UNKNOWN: Internal
+ * @RASQAL_UPDATE_TYPE_LAST: Internal
+ *
+ * Update type being performed.
+ *
+ */
+typedef enum {
+  /* internal */
+  RASQAL_UPDATE_TYPE_UNKNOWN   = 0,
+  RASQAL_UPDATE_TYPE_CLEAR     = 1,
+  RASQAL_UPDATE_TYPE_CREATE    = 2,
+  RASQAL_UPDATE_TYPE_DROP      = 3,
+  RASQAL_UPDATE_TYPE_LOAD      = 4,
+  RASQAL_UPDATE_TYPE_UPDATE    = 5,
+  RASQAL_UPDATE_TYPE_ADD       = 6,
+  RASQAL_UPDATE_TYPE_MOVE      = 7,
+  RASQAL_UPDATE_TYPE_COPY      = 8,
+
+  /* internal */
+  RASQAL_UPDATE_TYPE_LAST = RASQAL_UPDATE_TYPE_COPY
+} rasqal_update_type;
+
+
+/**
+ * rasqal_update_flags:
+ * @RASQAL_UPDATE_FLAGS_SILENT: the update operation should be silent
+ * @RASQAL_UPDATE_FLAGS_DATA: the update operation is triple data not templates
+ *
+ * Bitflags for graph update operations
+ */
+typedef enum {
+  RASQAL_UPDATE_FLAGS_SILENT = 1,
+  RASQAL_UPDATE_FLAGS_DATA = 2
+} rasqal_update_flags;
+
+
+/**
+ * rasqal_update_graph_applies:
+ * @RASQAL_UPDATE_GRAPH_ONE: the update operation applies to 1 graph
+ * @RASQAL_UPDATE_GRAPH_DEFAULT: the update operation applies to the default graph
+ * @RASQAL_UPDATE_GRAPH_NAMED: the update operation applies to all named graphs
+ * @RASQAL_UPDATE_GRAPH_ALL: the update operation applies ALL graphs
+ *
+ * The graph(s) that the update operation applies to.
+ */
+typedef enum {
+  RASQAL_UPDATE_GRAPH_ONE = 0,
+  RASQAL_UPDATE_GRAPH_DEFAULT = 1,
+  RASQAL_UPDATE_GRAPH_NAMED = 2,
+  RASQAL_UPDATE_GRAPH_ALL = 3
+} rasqal_update_graph_applies;
+
+
+/**
+ * rasqal_update_operation:
+ * @type: type of update
+ * @graph_uri: optional graph URI (clear, drop, load, with ... delete, insert); source graph (add, move, copy)
+ * @document_uri: optional document URI (load); destination graph (add, move, copy)
+ * @insert_templates: optional sequence of #rasqal_triple to insert. Data triples if @flags is #RASQAL_UPDATE_FLAGS_DATA set, templates otherwise.
+ * @delete_templates: optional sequence of #rasqal_triple templates to delete
+ * @where: optional where template (insert/delete)
+ * @flags: update flags - bit-or of flags defined in #rasqal_update_flags
+ * @applies: the graph(s) that the update operation applies to, or @graph_uri if #RASQAL_UPDATE_GRAPH_ONE
+ *
+ * Update operation - changing the dataset
+ *
+ * For LOAD and CLEAR if @applies is set (not 0) then the operation
+ * applies to just those graph(), otherwise it applies to the @graph_uri.
+ *
+ * For ADD, MOVE and COPY the source graph is stored in @graph_uri
+ * field and the destination graph in the @document_uri field.  The
+ * field names have no meaning in this case since both values are
+ * always present, always graphs and a NULL value signifies the
+ * default graph.
+ *
+ */
+typedef struct {
+  rasqal_update_type type;
+
+  raptor_uri* graph_uri;
+
+  raptor_uri* document_uri;
+
+  raptor_sequence* insert_templates;
+
+  raptor_sequence* delete_templates;
+
+  rasqal_graph_pattern* where;
+
+  int flags;
+
+  rasqal_update_graph_applies applies;
+} rasqal_update_operation;
+
+
+/**
+ * rasqal_graph_pattern_operator:
+ * @RASQAL_GRAPH_PATTERN_OPERATOR_BASIC: Just triple patterns and constraints.
+ * @RASQAL_GRAPH_PATTERN_OPERATOR_OPTIONAL: Set of graph patterns (ANDed) and constraints.
+ * @RASQAL_GRAPH_PATTERN_OPERATOR_UNION: Set of graph patterns (UNIONed) and constraints.
+ * @RASQAL_GRAPH_PATTERN_OPERATOR_GROUP: Set of graph patterns (ANDed) and constraints.
+ * @RASQAL_GRAPH_PATTERN_OPERATOR_GRAPH: A graph term + a graph pattern and constraints.
+ * @RASQAL_GRAPH_PATTERN_OPERATOR_FILTER: A filter graph pattern with an expression
+ * @RASQAL_GRAPH_PATTERN_OPERATOR_LET: LET ?var := Expression (LAQRS)
+ * @RASQAL_GRAPH_PATTERN_OPERATOR_SELECT: SELECT graph pattern
+ * @RASQAL_GRAPH_PATTERN_OPERATOR_SERVICE: SERVICE graph pattern
+ * @RASQAL_GRAPH_PATTERN_OPERATOR_MINUS: MINUS graph pattern
+ * @RASQAL_GRAPH_PATTERN_OPERATOR_VALUES: VALUES graph pattern
+ * @RASQAL_GRAPH_PATTERN_OPERATOR_UNKNOWN: Internal.
+ * @RASQAL_GRAPH_PATTERN_OPERATOR_LAST: Internal.
+ *
+ * Graph pattern operators
+ */
+typedef enum {
+  RASQAL_GRAPH_PATTERN_OPERATOR_UNKNOWN   = 0,
+  RASQAL_GRAPH_PATTERN_OPERATOR_BASIC     = 1,
+  RASQAL_GRAPH_PATTERN_OPERATOR_OPTIONAL  = 2,
+  RASQAL_GRAPH_PATTERN_OPERATOR_UNION     = 3,
+  RASQAL_GRAPH_PATTERN_OPERATOR_GROUP     = 4,
+  RASQAL_GRAPH_PATTERN_OPERATOR_GRAPH     = 5,
+  RASQAL_GRAPH_PATTERN_OPERATOR_FILTER    = 6,
+  RASQAL_GRAPH_PATTERN_OPERATOR_LET       = 7,
+  RASQAL_GRAPH_PATTERN_OPERATOR_SELECT    = 8,
+  RASQAL_GRAPH_PATTERN_OPERATOR_SERVICE   = 9,
+  RASQAL_GRAPH_PATTERN_OPERATOR_MINUS     = 10,
+  RASQAL_GRAPH_PATTERN_OPERATOR_VALUES    = 11,
+
+  RASQAL_GRAPH_PATTERN_OPERATOR_LAST = RASQAL_GRAPH_PATTERN_OPERATOR_VALUES
+} rasqal_graph_pattern_operator;
+
+
+/**
+ * rasqal_graph_pattern_visit_fn:
+ * @query: #rasqal_query containing the graph pattern
+ * @gp: current graph_pattern
+ * @user_data: user data passed in
+ *
+ * User function to visit a graph_pattern and operate on it with
+ * rasqal_graph_pattern_visit() or rasqal_query_graph_pattern_visit()
+ *
+ * Return value: non-0 to truncate the visit
+ */
+typedef int (*rasqal_graph_pattern_visit_fn)(rasqal_query* query, rasqal_graph_pattern* gp, void *user_data);
+
+
+/* RASQAL API */
+
+/* Public functions */
+
+RASQAL_API
+rasqal_world *rasqal_new_world(void);
+RASQAL_API
+int rasqal_world_open(rasqal_world* world);
+RASQAL_API
+void rasqal_free_world(rasqal_world* world);
+
+RASQAL_API
+void rasqal_world_set_raptor(rasqal_world* world, raptor_world* raptor_world_ptr);
+RASQAL_API
+raptor_world *rasqal_world_get_raptor(rasqal_world* world);
+
+RASQAL_API
+void rasqal_world_set_log_handler(rasqal_world* world, void *user_data, raptor_log_handler handler);
+
+RASQAL_API
+int rasqal_world_set_default_generate_bnodeid_parameters(rasqal_world* world, char *prefix, int base);
+RASQAL_API
+int rasqal_world_set_generate_bnodeid_handler(rasqal_world* world, void *user_data, rasqal_generate_bnodeid_handler handler);
+
+RASQAL_API
+int rasqal_world_set_warning_level(rasqal_world* world, unsigned int warning_level);
+
+RASQAL_API
+const raptor_syntax_description* rasqal_world_get_query_results_format_description(rasqal_world* world, unsigned int counter);
+
+RASQAL_API
+const char* rasqal_world_guess_query_results_format_name(rasqal_world* world, raptor_uri *uri, const char *mime_type, const unsigned char *buffer, size_t len, const unsigned char *identifier);
+
+/* Features */
+RASQAL_API
+int rasqal_features_enumerate(rasqal_world* world, const rasqal_feature feature, const char **name, raptor_uri **uri, const char **label);
+RASQAL_API
+unsigned int rasqal_get_feature_count(void);
+RASQAL_API
+rasqal_feature rasqal_feature_from_uri(rasqal_world* world, raptor_uri *uri);
+RASQAL_API
+int rasqal_feature_value_type(const rasqal_feature feature);
+
+
+RASQAL_API
+const raptor_syntax_description* rasqal_world_get_query_language_description(rasqal_world* world, unsigned int counter);
+
+RASQAL_API RASQAL_DEPRECATED
+int rasqal_languages_enumerate(rasqal_world* world, unsigned int counter, const char **name, const char **label, const unsigned char **uri_string);
+
+RASQAL_API
+int rasqal_language_name_check(rasqal_world* world, const char *name);
+
+
+/* Query class */
+
+/* Create */
+RASQAL_API
+rasqal_query* rasqal_new_query(rasqal_world* world, const char *name, const unsigned char *uri);
+
+/* Destroy */
+RASQAL_API
+void rasqal_free_query(rasqal_query* query);
+
+/* Methods */
+RASQAL_API
+const char* rasqal_query_get_name(rasqal_query* query);
+RASQAL_API
+const char* rasqal_query_get_label(rasqal_query* query);
+
+
+RASQAL_API
+int rasqal_query_set_feature(rasqal_query* query, rasqal_feature feature, int value);
+RASQAL_API
+int rasqal_query_set_feature_string(rasqal_query *query, rasqal_feature feature, const unsigned char *value);
+RASQAL_API
+int rasqal_query_get_feature(rasqal_query *query, rasqal_feature feature);
+RASQAL_API
+const unsigned char* rasqal_query_get_feature_string(rasqal_query *query, rasqal_feature feature);
+
+RASQAL_API
+rasqal_query_verb rasqal_query_get_verb(rasqal_query* query);
+RASQAL_API
+int rasqal_query_get_wildcard(rasqal_query* query);
+RASQAL_API
+void rasqal_query_set_wildcard(rasqal_query* query, int wildcard);
+RASQAL_API
+int rasqal_query_get_distinct(rasqal_query* query);
+RASQAL_API
+void rasqal_query_set_distinct(rasqal_query* query, int distinct_mode);
+RASQAL_API
+int rasqal_query_get_explain(rasqal_query* query);
+RASQAL_API
+void rasqal_query_set_explain(rasqal_query* query, int is_explain);
+RASQAL_API
+int rasqal_query_get_limit(rasqal_query* query);
+RASQAL_API
+void rasqal_query_set_limit(rasqal_query* query, int limit);
+RASQAL_API
+int rasqal_query_get_offset(rasqal_query* query);
+RASQAL_API
+void rasqal_query_set_offset(rasqal_query* query, int offset);
+
+RASQAL_API
+int rasqal_query_add_data_graph(rasqal_query* query, rasqal_data_graph* data_graph);
+RASQAL_API
+int rasqal_query_add_data_graphs(rasqal_query* query, raptor_sequence* data_graphs);
+
+RASQAL_API
+raptor_sequence* rasqal_query_get_data_graph_sequence(rasqal_query* query);
+RASQAL_API
+rasqal_data_graph* rasqal_query_get_data_graph(rasqal_query* query, int idx);
+RASQAL_API
+int rasqal_query_dataset_contains_named_graph(rasqal_query* query, raptor_uri *graph_uri);
+
+RASQAL_API
+int rasqal_query_add_variable(rasqal_query* query, rasqal_variable* var);
+RASQAL_API
+raptor_sequence* rasqal_query_get_bound_variable_sequence(rasqal_query* query);
+RASQAL_API
+raptor_sequence* rasqal_query_get_describe_sequence(rasqal_query* query);
+RASQAL_API
+raptor_sequence* rasqal_query_get_anonymous_variable_sequence(rasqal_query* query);
+RASQAL_API
+raptor_sequence* rasqal_query_get_all_variable_sequence(rasqal_query* query);
+RASQAL_API
+rasqal_variable* rasqal_query_get_variable(rasqal_query* query, int idx);
+RASQAL_API
+int rasqal_query_has_variable2(rasqal_query* query, rasqal_variable_type type, const unsigned char *name);
+RASQAL_API RASQAL_DEPRECATED
+int rasqal_query_has_variable(rasqal_query* query, const unsigned char *name);
+RASQAL_API
+int rasqal_query_set_variable2(rasqal_query* query, rasqal_variable_type type, const unsigned char *name, rasqal_literal* value);
+RASQAL_API RASQAL_DEPRECATED
+int rasqal_query_set_variable(rasqal_query* query, const unsigned char *name, rasqal_literal* value);
+RASQAL_API
+raptor_sequence* rasqal_query_get_triple_sequence(rasqal_query* query);
+RASQAL_API
+rasqal_triple* rasqal_query_get_triple(rasqal_query* query, int idx);
+RASQAL_API
+int rasqal_query_add_prefix(rasqal_query* query, rasqal_prefix* prefix);
+RASQAL_API
+raptor_sequence* rasqal_query_get_prefix_sequence(rasqal_query* query);
+RASQAL_API
+rasqal_prefix* rasqal_query_get_prefix(rasqal_query* query, int idx);
+RASQAL_API
+raptor_sequence* rasqal_query_get_order_conditions_sequence(rasqal_query* query);
+RASQAL_API
+rasqal_expression* rasqal_query_get_order_condition(rasqal_query* query, int idx);
+RASQAL_API
+raptor_sequence* rasqal_query_get_group_conditions_sequence(rasqal_query* query);
+RASQAL_API
+rasqal_expression* rasqal_query_get_group_condition(rasqal_query* query, int idx);
+RASQAL_API
+raptor_sequence* rasqal_query_get_having_conditions_sequence(rasqal_query* query);
+RASQAL_API
+rasqal_expression* rasqal_query_get_having_condition(rasqal_query* query, int idx);
+RASQAL_API
+raptor_sequence* rasqal_query_get_construct_triples_sequence(rasqal_query* query);
+RASQAL_API
+rasqal_triple* rasqal_query_get_construct_triple(rasqal_query* query, int idx);
+RASQAL_API RASQAL_DEPRECATED
+void rasqal_query_graph_pattern_visit(rasqal_query* query, rasqal_graph_pattern_visit_fn visit_fn, void* data);
+RASQAL_API
+int rasqal_query_graph_pattern_visit2(rasqal_query* query, rasqal_graph_pattern_visit_fn visit_fn, void* data);
+RASQAL_API
+int rasqal_query_write(raptor_iostream* iostr, rasqal_query* query, raptor_uri* format_uri, raptor_uri* base_uri);
+
+/* update */
+RASQAL_API
+raptor_sequence* rasqal_query_get_update_operations_sequence(rasqal_query* query);
+RASQAL_API
+rasqal_update_operation* rasqal_query_get_update_operation(rasqal_query* query, int idx);
+
+/* results */
+int rasqal_query_set_store_results(rasqal_query* query, int store_results);
+
+/* graph patterns */
+RASQAL_API
+rasqal_graph_pattern* rasqal_query_get_query_graph_pattern(rasqal_query* query);
+RASQAL_API
+raptor_sequence* rasqal_query_get_graph_pattern_sequence(rasqal_query* query);
+RASQAL_API
+rasqal_graph_pattern* rasqal_query_get_graph_pattern(rasqal_query* query, int idx);
+RASQAL_API
+int rasqal_graph_pattern_add_sub_graph_pattern(rasqal_graph_pattern* graph_pattern, rasqal_graph_pattern* sub_graph_pattern);
+RASQAL_API
+rasqal_triple* rasqal_graph_pattern_get_triple(rasqal_graph_pattern* graph_pattern, int idx);
+RASQAL_API
+raptor_sequence* rasqal_graph_pattern_get_sub_graph_pattern_sequence(rasqal_graph_pattern* graph_pattern);
+RASQAL_API
+rasqal_graph_pattern* rasqal_graph_pattern_get_sub_graph_pattern(rasqal_graph_pattern* graph_pattern, int idx);
+RASQAL_API
+rasqal_graph_pattern_operator rasqal_graph_pattern_get_operator(rasqal_graph_pattern* graph_pattern);
+RASQAL_API
+const char* rasqal_graph_pattern_operator_as_string(rasqal_graph_pattern_operator op);
+RASQAL_API
+int rasqal_graph_pattern_print(rasqal_graph_pattern* gp, FILE* fh);
+RASQAL_API
+int rasqal_graph_pattern_set_filter_expression(rasqal_graph_pattern* gp, rasqal_expression* expr);
+RASQAL_API
+rasqal_expression* rasqal_graph_pattern_get_filter_expression(rasqal_graph_pattern* gp);
+RASQAL_API
+int rasqal_graph_pattern_visit(rasqal_query* query, rasqal_graph_pattern *gp, rasqal_graph_pattern_visit_fn fn, void* user_data);
+RASQAL_API
+int rasqal_graph_pattern_get_index(rasqal_graph_pattern* gp);
+RASQAL_API
+int rasqal_graph_pattern_variable_bound_in(rasqal_graph_pattern *gp, rasqal_variable *v);
+RASQAL_API
+rasqal_literal* rasqal_graph_pattern_get_origin(rasqal_graph_pattern* graph_pattern);
+RASQAL_API
+rasqal_variable* rasqal_graph_pattern_get_variable(rasqal_graph_pattern* graph_pattern);
+RASQAL_API
+rasqal_literal* rasqal_graph_pattern_get_service(rasqal_graph_pattern* graph_pattern);
+RASQAL_API
+raptor_sequence* rasqal_graph_pattern_get_flattened_triples(rasqal_query* query, rasqal_graph_pattern* graph_pattern);
+RASQAL_API
+raptor_sequence* rasqal_graph_pattern_get_triples(rasqal_query* query, rasqal_graph_pattern* graph_pattern);
+
+
+/* Utility methods */
+RASQAL_API
+const char* rasqal_query_verb_as_string(rasqal_query_verb verb);
+RASQAL_API
+int rasqal_query_print(rasqal_query* query, FILE* fh);
+
+/* Query */
+RASQAL_API
+int rasqal_query_prepare(rasqal_query* query, const unsigned char *query_string, raptor_uri *base_uri);
+RASQAL_API
+rasqal_query_results* rasqal_query_execute(rasqal_query* query);
+
+RASQAL_API
+void* rasqal_query_get_user_data(rasqal_query* query);
+RASQAL_API
+void rasqal_query_set_user_data(rasqal_query* query, void *user_data);
+
+RASQAL_API
+raptor_sequence* rasqal_query_get_bindings_variables_sequence(rasqal_query* query);
+RASQAL_API
+rasqal_variable* rasqal_query_get_bindings_variable(rasqal_query* query, int idx);
+RASQAL_API
+raptor_sequence* rasqal_query_get_bindings_rows_sequence(rasqal_query* query);
+RASQAL_API
+rasqal_row* rasqal_query_get_bindings_row(rasqal_query* query, int idx);
+RASQAL_API
+rasqal_query_results_type rasqal_query_get_result_type(rasqal_query* query);
+
+/* query results */
+RASQAL_API
+rasqal_query_results* rasqal_new_query_results2(rasqal_world* world, rasqal_query* query, rasqal_query_results_type type);
+RASQAL_API RASQAL_DEPRECATED
+rasqal_query_results* rasqal_new_query_results(rasqal_world* world, rasqal_query* query, rasqal_query_results_type type, rasqal_variables_table* vars_table);
+RASQAL_API
+rasqal_query_results* rasqal_new_query_results_from_string(rasqal_world* world, rasqal_query_results_type type, raptor_uri* base_uri, const char* string, size_t string_len);
+RASQAL_API
+void rasqal_free_query_results(rasqal_query_results *query_results);
+
+RASQAL_API
+rasqal_query* rasqal_query_results_get_query(rasqal_query_results* query_results);
+
+/* Bindings result format */
+RASQAL_API
+rasqal_query_results_type rasqal_query_results_get_type(rasqal_query_results* query_results);
+RASQAL_API
+const char* rasqal_query_results_type_label(rasqal_query_results_type type);
+RASQAL_API
+int rasqal_query_results_is_bindings(rasqal_query_results *query_results);
+RASQAL_API
+int rasqal_query_results_get_count(rasqal_query_results *query_results);
+RASQAL_API
+int rasqal_query_results_next(rasqal_query_results *query_results);
+RASQAL_API
+int rasqal_query_results_finished(rasqal_query_results *query_results);
+RASQAL_API
+int rasqal_query_results_get_bindings(rasqal_query_results *query_results, const unsigned char ***names, rasqal_literal ***values);
+RASQAL_API
+rasqal_literal* rasqal_query_results_get_binding_value(rasqal_query_results *query_results, int offset);
+RASQAL_API
+const unsigned char* rasqal_query_results_get_binding_name(rasqal_query_results *query_results, int offset);
+RASQAL_API
+rasqal_literal* rasqal_query_results_get_binding_value_by_name(rasqal_query_results *query_results, const unsigned char *name);
+RASQAL_API
+int rasqal_query_results_get_bindings_count(rasqal_query_results *query_results);
+RASQAL_API
+int rasqal_query_results_add_row(rasqal_query_results* query_results, rasqal_row* row);
+RASQAL_API
+rasqal_row* rasqal_query_results_get_row_by_offset(rasqal_query_results* query_results, int result_offset);
+
+/* Boolean result format */
+RASQAL_API
+int rasqal_query_results_is_boolean(rasqal_query_results *query_results);
+RASQAL_API
+int rasqal_query_results_get_boolean(rasqal_query_results *query_results);
+
+/* Graph result format */
+RASQAL_API
+int rasqal_query_results_is_graph(rasqal_query_results *query_results);
+RASQAL_API
+raptor_statement* rasqal_query_results_get_triple(rasqal_query_results *query_results);
+RASQAL_API
+int rasqal_query_results_next_triple(rasqal_query_results *query_results);
+
+/* Syntax result format */
+RASQAL_API
+int rasqal_query_results_is_syntax(rasqal_query_results* query_results);
+
+RASQAL_API
+int rasqal_query_results_write(raptor_iostream *iostr, rasqal_query_results *results, const char* name, const char* mime_type, raptor_uri *format_uri, raptor_uri *base_uri);
+RASQAL_API
+int rasqal_query_results_read(raptor_iostream *iostr, rasqal_query_results *results, const char* name, const char* mime_type, raptor_uri *format_uri, raptor_uri *base_uri);
+
+/* One more time */
+RASQAL_API
+int rasqal_query_results_rewind(rasqal_query_results* query_results);
+
+
+/**
+ * rasqal_query_results_format_flags:
+ * @RASQAL_QUERY_RESULTS_FORMAT_FLAG_READER: format can be read.
+ * @RASQAL_QUERY_RESULTS_FORMAT_FLAG_WRITER: format can be written.
+ *
+ * Bitflags for rasqal_query_results_formats_check() to find formats with features.
+ */
+typedef enum {
+  RASQAL_QUERY_RESULTS_FORMAT_FLAG_READER = 1,
+  RASQAL_QUERY_RESULTS_FORMAT_FLAG_WRITER = 2
+} rasqal_query_results_format_flags;
+
+
+RASQAL_API
+int rasqal_query_results_formats_check2(rasqal_world* world, const char *name, raptor_uri* uri, const char *mime_type, int flags);
+RASQAL_API RASQAL_DEPRECATED
+int rasqal_query_results_formats_check(rasqal_world* world, const char *name, raptor_uri* uri, const char *mime_type, int flags);
+RASQAL_API
+rasqal_query_results_formatter* rasqal_new_query_results_formatter(rasqal_world* world, const char *name, const char *mime_type, raptor_uri* format_uri);
+RASQAL_API
+rasqal_query_results_formatter* rasqal_new_query_results_formatter_for_content(rasqal_world* world, raptor_uri *uri, const char *mime_type, const unsigned char *buffer, size_t len, const unsigned char *identifier);
+RASQAL_API
+void rasqal_free_query_results_formatter(rasqal_query_results_formatter* formatter);
+RASQAL_API
+int rasqal_query_results_formatter_write(raptor_iostream *iostr, rasqal_query_results_formatter* formatter, rasqal_query_results* results, raptor_uri *base_uri);
+RASQAL_API
+int rasqal_query_results_formatter_read(rasqal_world* world, raptor_iostream *iostr, rasqal_query_results_formatter* formatter, rasqal_query_results* results, raptor_uri *base_uri);
+
+RASQAL_API
+int rasqal_query_iostream_write_escaped_counted_string(rasqal_query* query, raptor_iostream* iostr, const unsigned char* string, size_t len);
+RASQAL_API
+unsigned char* rasqal_query_escape_counted_string(rasqal_query* query, const unsigned char *string, size_t len, size_t* output_len_p);
+
+
+/* Data graph class */
+RASQAL_API
+rasqal_data_graph* rasqal_new_data_graph_from_uri(rasqal_world* world, raptor_uri* uri, raptor_uri* name_uri, unsigned int flags, const char* format_type, const char* format_name, raptor_uri* format_uri);
+RASQAL_API
+rasqal_data_graph* rasqal_new_data_graph_from_iostream(rasqal_world* world, raptor_iostream* iostr, raptor_uri* base_uri, raptor_uri* name_uri, unsigned int flags, const char* format_type, const char* format_name, raptor_uri* format_uri);
+RASQAL_API
+rasqal_data_graph* rasqal_new_data_graph_from_data_graph(rasqal_data_graph* dg);
+RASQAL_API
+void rasqal_free_data_graph(rasqal_data_graph* dg);
+RASQAL_API
+int rasqal_data_graph_print(rasqal_data_graph* dg, FILE* fh);
+
+
+/**
+ * rasqal_compare_flags:
+ * @RASQAL_COMPARE_NOCASE: String comparisons are case independent.
+ * @RASQAL_COMPARE_XQUERY: XQuery comparsion rules apply.
+ * @RASQAL_COMPARE_RDF:    RDF Term comparsion rules apply.
+ * @RASQAL_COMPARE_URI:    Allow comparison of URIs and allow strings to have a boolean value (unused; was for RDQL)
+ * @RASQAL_COMPARE_SAMETERM: SPARQL sameTerm() builtin rules apply.
+ *
+ * Flags for rasqal_expression_evaluate(), rasqal_literal_compare() or
+ * rasqal_literal_as_string_flags()
+ */
+typedef enum {
+  RASQAL_COMPARE_NOCASE = 1,
+  RASQAL_COMPARE_XQUERY = 2,
+  RASQAL_COMPARE_RDF    = 4,
+  RASQAL_COMPARE_URI    = 8,
+  RASQAL_COMPARE_SAMETERM = 16
+} rasqal_compare_flags;
+
+
+/**
+ * rasqal_random:
+ *
+ * Internal
+ */
+typedef struct rasqal_random_s rasqal_random;
+
+
+/**
+ * rasqal_evaluation_context:
+ * @world: rasqal world
+ * @base_uri: base URI of expression context (or NULL)
+ * @locator: locator or NULL
+ * @flags: expression comparison flags
+ * @seed: random seeed
+ * @random: random number generator object
+ *
+ * A context for evaluating an expression such as with
+ * rasqal_expression_evaluate2()
+ */
+typedef struct {
+  rasqal_world *world;
+  raptor_uri* base_uri;
+  raptor_locator *locator;
+  int flags;
+  unsigned int seed;
+  rasqal_random* random;
+} rasqal_evaluation_context;
+
+
+/* Expression class */
+RASQAL_API
+rasqal_expression* rasqal_new_0op_expression(rasqal_world* world, rasqal_op op);
+RASQAL_API
+rasqal_expression* rasqal_new_1op_expression(rasqal_world* world, rasqal_op op, rasqal_expression* arg);
+RASQAL_API
+rasqal_expression* rasqal_new_2op_expression(rasqal_world* world, rasqal_op op, rasqal_expression* arg1, rasqal_expression* arg2);
+RASQAL_API
+rasqal_expression* rasqal_new_3op_expression(rasqal_world* world, rasqal_op op, rasqal_expression* arg1,  rasqal_expression* arg2, rasqal_expression* arg3);
+RASQAL_API
+rasqal_expression* rasqal_new_4op_expression(rasqal_world* world, rasqal_op op, rasqal_expression* arg1, rasqal_expression* arg2, rasqal_expression* arg3, rasqal_expression* arg4);
+RASQAL_API
+rasqal_expression* rasqal_new_string_op_expression(rasqal_world* world, rasqal_op op, rasqal_expression* arg1, rasqal_literal* literal);
+RASQAL_API
+rasqal_expression* rasqal_new_literal_expression(rasqal_world* world, rasqal_literal* literal);
+RASQAL_API
+rasqal_expression* rasqal_new_function_expression(rasqal_world* world, raptor_uri* name, raptor_sequence* args, raptor_sequence* params, unsigned int flags);
+RASQAL_API
+rasqal_expression* rasqal_new_aggregate_function_expression(rasqal_world* world, rasqal_op op, rasqal_expression* arg1, raptor_sequence* params, unsigned int flags);
+RASQAL_API
+rasqal_expression* rasqal_new_cast_expression(rasqal_world* world, raptor_uri* name, rasqal_expression *value);
+RASQAL_API
+rasqal_expression* rasqal_new_expr_seq_expression(rasqal_world* world, rasqal_op op, raptor_sequence* args);
+RASQAL_API
+rasqal_expression* rasqal_new_set_expression(rasqal_world* world, rasqal_op op, rasqal_expression* arg1, raptor_sequence* args);
+RASQAL_API
+rasqal_expression* rasqal_new_group_concat_expression(rasqal_world* world, unsigned int flags, raptor_sequence* args, rasqal_literal* separator);
+RASQAL_API
+rasqal_expression* rasqal_new_expression_from_expression(rasqal_expression* e);
+
+RASQAL_API
+void rasqal_free_expression(rasqal_expression* e);
+RASQAL_API
+void rasqal_expression_print_op(rasqal_expression* e, FILE* fh);
+RASQAL_API
+int rasqal_expression_print(rasqal_expression* e, FILE* fh);
+RASQAL_API RASQAL_DEPRECATED
+rasqal_literal* rasqal_expression_evaluate(rasqal_world *world, raptor_locator *locator, rasqal_expression* e, int flags);
+RASQAL_API
+rasqal_literal* rasqal_expression_evaluate2(rasqal_expression *e, rasqal_evaluation_context* eval_context, int *error_p);
+RASQAL_API
+const char* rasqal_expression_op_label(rasqal_op op);
+RASQAL_API
+int rasqal_expression_compare(rasqal_expression* e1, rasqal_expression* e2, int flags, int* error_p);
+
+/**
+ * rasqal_expression_visit_fn:
+ * @user_data: user data passed in with rasqal_expression_visit()
+ * @e: current expression
+ *
+ * User function to visit an expression and operate on it with
+ * rasqal_expression_visit()
+ *
+ * Return value: non-0 to truncate the visit
+ */
+typedef int (*rasqal_expression_visit_fn)(void *user_data, rasqal_expression *e);
+RASQAL_API
+int rasqal_expression_visit(rasqal_expression* e, rasqal_expression_visit_fn fn, void *user_data);
+
+RASQAL_API
+rasqal_evaluation_context* rasqal_new_evaluation_context(rasqal_world* world, raptor_locator* locator, int flags);
+RASQAL_API
+void rasqal_free_evaluation_context(rasqal_evaluation_context* eval_context);
+RASQAL_API
+int rasqal_evaluation_context_set_base_uri(rasqal_evaluation_context* eval_context, raptor_uri *base_uri);
+RASQAL_API
+int rasqal_evaluation_context_set_rand_seed(rasqal_evaluation_context* eval_context, unsigned int seed);
+
+
+/* Literal class */
+RASQAL_API
+rasqal_literal* rasqal_new_integer_literal(rasqal_world* world, rasqal_literal_type type, int integer);
+RASQAL_API
+rasqal_literal* rasqal_new_numeric_literal_from_long(rasqal_world* world, rasqal_literal_type type, long value);
+RASQAL_API
+rasqal_literal* rasqal_new_typed_literal(rasqal_world* world, rasqal_literal_type type, const unsigned char* string);
+RASQAL_API
+rasqal_literal* rasqal_new_double_literal(rasqal_world* world, double d);
+RASQAL_API
+rasqal_literal* rasqal_new_floating_literal(rasqal_world *world, rasqal_literal_type type, double d);
+RASQAL_API RASQAL_DEPRECATED
+rasqal_literal* rasqal_new_float_literal(rasqal_world* world, float f);
+RASQAL_API
+rasqal_literal* rasqal_new_uri_literal(rasqal_world* world, raptor_uri* uri);
+RASQAL_API
+rasqal_literal* rasqal_new_pattern_literal(rasqal_world* world, const unsigned char *pattern, const char *flags);
+RASQAL_API
+rasqal_literal* rasqal_new_string_literal(rasqal_world* world, const unsigned char *string, const char *language, raptor_uri *datatype, const unsigned char *datatype_qname);
+RASQAL_API
+rasqal_literal* rasqal_new_simple_literal(rasqal_world* world, rasqal_literal_type type, const unsigned char *string);
+RASQAL_API
+rasqal_literal* rasqal_new_boolean_literal(rasqal_world* world, int value);
+RASQAL_API
+rasqal_literal* rasqal_new_variable_literal(rasqal_world* world, rasqal_variable *variable);
+RASQAL_API
+rasqal_literal* rasqal_new_decimal_literal(rasqal_world* world, const unsigned char *string);
+RASQAL_API
+rasqal_literal* rasqal_new_decimal_literal_from_decimal(rasqal_world* world, const unsigned char *string, rasqal_xsd_decimal* decimal);
+RASQAL_API
+rasqal_literal* rasqal_new_datetime_literal_from_datetime(rasqal_world* world, rasqal_xsd_datetime* dt);
+
+
+RASQAL_API
+rasqal_literal* rasqal_new_literal_from_literal(rasqal_literal* l);
+RASQAL_API
+void rasqal_free_literal(rasqal_literal* l);
+RASQAL_API
+int rasqal_literal_print(rasqal_literal* l, FILE* fh);
+RASQAL_API
+const char* rasqal_literal_type_label(rasqal_literal_type type);
+RASQAL_API
+void rasqal_literal_print_type(rasqal_literal* l, FILE* fh);
+RASQAL_API
+rasqal_variable* rasqal_literal_as_variable(rasqal_literal* l);
+RASQAL_API
+const unsigned char* rasqal_literal_as_counted_string(rasqal_literal* l, size_t *len_p, int flags, int *error_p);
+RASQAL_API
+const unsigned char* rasqal_literal_as_string(rasqal_literal* l);
+RASQAL_API
+const unsigned char* rasqal_literal_as_string_flags(rasqal_literal* l, int flags, int *error_p);
+RASQAL_API
+rasqal_literal* rasqal_literal_as_node(rasqal_literal* l);
+RASQAL_API
+raptor_uri* rasqal_literal_datatype(rasqal_literal* l);
+RASQAL_API
+rasqal_literal* rasqal_literal_value(rasqal_literal* l);
+
+RASQAL_API
+int rasqal_literal_compare(rasqal_literal* l1, rasqal_literal* l2, int flags, int *error_p);
+RASQAL_API
+int rasqal_literal_equals(rasqal_literal* l1, rasqal_literal* l2);
+RASQAL_API
+int rasqal_literal_same_term(rasqal_literal* l1, rasqal_literal* l2);
+RASQAL_API
+rasqal_literal_type rasqal_literal_get_rdf_term_type(rasqal_literal* l);
+RASQAL_API
+rasqal_literal_type rasqal_literal_get_type(rasqal_literal* l);
+RASQAL_API
+char* rasqal_literal_get_language(rasqal_literal* l);
+RASQAL_API
+int rasqal_literal_is_rdf_literal(rasqal_literal* l);
+
+
+RASQAL_API
+rasqal_prefix* rasqal_new_prefix(rasqal_world* world, const unsigned char* prefix, raptor_uri* uri);
+RASQAL_API
+void rasqal_free_prefix(rasqal_prefix* p);
+RASQAL_API
+int rasqal_prefix_print(rasqal_prefix* p, FILE* fh);
+
+
+/* Row class */
+RASQAL_API
+rasqal_row* rasqal_new_row_for_size(rasqal_world* world, int size);
+RASQAL_API
+void rasqal_free_row(rasqal_row* row);
+RASQAL_API
+int rasqal_row_set_value_at(rasqal_row* row, int offset, rasqal_literal* value);
+
+
+/* Triple class */
+RASQAL_API
+rasqal_triple* rasqal_new_triple(rasqal_literal* subject, rasqal_literal* predicate, rasqal_literal* object);
+RASQAL_API
+rasqal_triple* rasqal_new_triple_from_triple(rasqal_triple* t);
+RASQAL_API
+void rasqal_free_triple(rasqal_triple* t);
+RASQAL_API
+int rasqal_triple_print(rasqal_triple* t, FILE* fh);
+RASQAL_API
+void rasqal_triple_set_origin(rasqal_triple* t, rasqal_literal *l);
+RASQAL_API
+rasqal_literal* rasqal_triple_get_origin(rasqal_triple* t);
+
+/* Variable class */
+RASQAL_API
+rasqal_variable* rasqal_new_variable_from_variable(rasqal_variable* v);
+RASQAL_API
+void rasqal_free_variable(rasqal_variable* v);
+RASQAL_API
+int rasqal_variable_print(rasqal_variable* v, FILE* fh);
+RASQAL_API
+void rasqal_variable_set_value(rasqal_variable* v, rasqal_literal* l);
+
+
+/* Variables Table */
+RASQAL_API
+rasqal_variables_table* rasqal_new_variables_table(rasqal_world* world);
+RASQAL_API
+void rasqal_free_variables_table(rasqal_variables_table* vt);
+RASQAL_API RASQAL_DEPRECATED
+rasqal_variable* rasqal_variables_table_add(rasqal_variables_table* vt, rasqal_variable_type type, const unsigned char *name, rasqal_literal *value);
+RASQAL_API
+rasqal_variable* rasqal_variables_table_add2(rasqal_variables_table* vt, rasqal_variable_type type, const unsigned char *name, size_t name_len, rasqal_literal *value);
+RASQAL_API
+int rasqal_variables_table_add_variable(rasqal_variables_table* vt, rasqal_variable* variable);
+RASQAL_API
+rasqal_variable* rasqal_variables_table_get_by_name(rasqal_variables_table* vt, rasqal_variable_type type, const unsigned char *name);
+RASQAL_API
+int rasqal_variables_table_contains(rasqal_variables_table* vt, rasqal_variable_type type, const unsigned char *name);
+
+/* memory functions */
+RASQAL_API
+void rasqal_free_memory(void *ptr);
+RASQAL_API
+void* rasqal_alloc_memory(size_t size);
+RASQAL_API
+void* rasqal_calloc_memory(size_t nmemb, size_t size);
+
+
+/* decimal functions */
+RASQAL_API
+rasqal_xsd_decimal* rasqal_new_xsd_decimal(rasqal_world* world);
+RASQAL_API
+void rasqal_free_xsd_decimal(rasqal_xsd_decimal* dec);
+RASQAL_API
+int rasqal_xsd_decimal_set_string(rasqal_xsd_decimal* dec, const char* string);
+RASQAL_API
+double rasqal_xsd_decimal_get_double(rasqal_xsd_decimal* dec);
+RASQAL_API
+long rasqal_xsd_decimal_get_long(rasqal_xsd_decimal* dec, int* error_p);
+RASQAL_API
+char* rasqal_xsd_decimal_as_string(rasqal_xsd_decimal* dec);
+RASQAL_API
+char* rasqal_xsd_decimal_as_counted_string(rasqal_xsd_decimal* dec, size_t* len_p);
+RASQAL_API
+int rasqal_xsd_decimal_set_long(rasqal_xsd_decimal* dec, long l);
+RASQAL_API
+int rasqal_xsd_decimal_set_double(rasqal_xsd_decimal* dec, double d);
+RASQAL_API
+int rasqal_xsd_decimal_print(rasqal_xsd_decimal* dec, FILE* stream);
+RASQAL_API
+int rasqal_xsd_decimal_add(rasqal_xsd_decimal* result, rasqal_xsd_decimal* a, rasqal_xsd_decimal* b);
+RASQAL_API
+int rasqal_xsd_decimal_subtract(rasqal_xsd_decimal* result, rasqal_xsd_decimal* a, rasqal_xsd_decimal* b);
+RASQAL_API
+int rasqal_xsd_decimal_multiply(rasqal_xsd_decimal* result, rasqal_xsd_decimal* a, rasqal_xsd_decimal* b);
+RASQAL_API
+int rasqal_xsd_decimal_divide(rasqal_xsd_decimal* result, rasqal_xsd_decimal* a, rasqal_xsd_decimal* b);
+RASQAL_API
+int rasqal_xsd_decimal_negate(rasqal_xsd_decimal* result, rasqal_xsd_decimal* a);
+RASQAL_API
+int rasqal_xsd_decimal_compare(rasqal_xsd_decimal* a, rasqal_xsd_decimal* b);
+RASQAL_API
+int rasqal_xsd_decimal_equals(rasqal_xsd_decimal* a, rasqal_xsd_decimal* b);
+RASQAL_API
+int rasqal_xsd_decimal_is_zero(rasqal_xsd_decimal* d);
+RASQAL_API
+int rasqal_xsd_decimal_abs(rasqal_xsd_decimal* result, rasqal_xsd_decimal* a);
+RASQAL_API
+int rasqal_xsd_decimal_round(rasqal_xsd_decimal* result, rasqal_xsd_decimal* a);
+RASQAL_API
+int rasqal_xsd_decimal_ceil(rasqal_xsd_decimal* result, rasqal_xsd_decimal* a);
+RASQAL_API
+int rasqal_xsd_decimal_floor(rasqal_xsd_decimal* result, rasqal_xsd_decimal* a);
+
+
+/* date functions */
+RASQAL_API
+rasqal_xsd_date* rasqal_new_xsd_date(rasqal_world* world, const char *date_string);
+RASQAL_API
+void rasqal_free_xsd_date(rasqal_xsd_date* d);
+RASQAL_API
+char* rasqal_xsd_date_to_counted_string(const rasqal_xsd_date *date, size_t *len_p);
+RASQAL_API
+char* rasqal_xsd_date_to_string(const rasqal_xsd_date *d);
+RASQAL_API
+int rasqal_xsd_date_equals(const rasqal_xsd_date *d1, const rasqal_xsd_date *d2, int *incomparible_p);
+RASQAL_API
+int rasqal_xsd_date_compare(const rasqal_xsd_date *d1, const rasqal_xsd_date *d2, int *incomparible_p);
+
+/* datetime functions */
+RASQAL_API
+rasqal_xsd_datetime* rasqal_new_xsd_datetime(rasqal_world* world, const char *datetime_string);
+RASQAL_API
+rasqal_xsd_datetime* rasqal_new_xsd_datetime_from_unixtime(rasqal_world* world, time_t secs);
+RASQAL_API
+rasqal_xsd_datetime* rasqal_new_xsd_datetime_from_timeval(rasqal_world* world, struct timeval *tv);
+RASQAL_API
+rasqal_xsd_datetime* rasqal_new_xsd_datetime_from_xsd_date(rasqal_world* world, rasqal_xsd_date *date);
+RASQAL_API
+void rasqal_free_xsd_datetime(rasqal_xsd_datetime* dt);
+RASQAL_API
+char* rasqal_xsd_datetime_to_counted_string(const rasqal_xsd_datetime *dt, size_t *len_p);
+RASQAL_API
+char* rasqal_xsd_datetime_to_string(const rasqal_xsd_datetime *dt);
+RASQAL_API
+int rasqal_xsd_datetime_equals2(const rasqal_xsd_datetime *dt1, const rasqal_xsd_datetime *dt2, int *incomparible_p);
+RASQAL_API RASQAL_DEPRECATED
+int rasqal_xsd_datetime_equals(const rasqal_xsd_datetime *dt1, const rasqal_xsd_datetime *dt2);
+RASQAL_API
+int rasqal_xsd_datetime_compare2(const rasqal_xsd_datetime *dt1, const rasqal_xsd_datetime *dt2, int *incomparible_p);
+RASQAL_API RASQAL_DEPRECATED
+int rasqal_xsd_datetime_compare(const rasqal_xsd_datetime *dt1, const rasqal_xsd_datetime *dt2);
+RASQAL_API
+rasqal_xsd_decimal* rasqal_xsd_datetime_get_seconds_as_decimal(rasqal_world* world, rasqal_xsd_datetime* dt);
+RASQAL_API
+int rasqal_xsd_datetime_set_from_timeval(rasqal_xsd_datetime *dt, struct timeval *tv);
+RASQAL_API
+int rasqal_xsd_datetime_set_from_unixtime(rasqal_xsd_datetime* dt, time_t clock);
+RASQAL_API
+time_t rasqal_xsd_datetime_get_as_unixtime(rasqal_xsd_datetime* dt);
+RASQAL_API
+struct timeval* rasqal_xsd_datetime_get_as_timeval(rasqal_xsd_datetime *dt);
+RASQAL_API
+char* rasqal_xsd_datetime_get_timezone_as_counted_string(rasqal_xsd_datetime *dt, size_t *len_p);
+RASQAL_API
+char* rasqal_xsd_datetime_get_tz_as_counted_string(rasqal_xsd_datetime* dt, size_t *len_p);
+
+
+/* regex utilities */
+RASQAL_API
+char* rasqal_regex_replace(rasqal_world* world, raptor_locator* locator, const char* pattern, const char* regex_flags, const char* subject, size_t subject_len, const char* replace, size_t replace_len, size_t* result_len_p);
+
+
+/**
+ * rasqal_service:
+ *
+ * Rasqal SPARQL Protocol Service
+ */
+typedef struct rasqal_service_s rasqal_service;
+
+RASQAL_API
+rasqal_service* rasqal_new_service(rasqal_world* world, raptor_uri* service_uri, const unsigned char* query_string, raptor_sequence* data_graphs);
+RASQAL_API
+void rasqal_free_service(rasqal_service* svc);
+RASQAL_API
+rasqal_query_results* rasqal_service_execute(rasqal_service* svc);
+RASQAL_API
+int rasqal_service_set_www(rasqal_service* svc, raptor_www* www);
+RASQAL_API
+int rasqal_service_set_format(rasqal_service* svc, const char *format);
+
+
+
+/**
+ * rasqal_triple_parts:
+ * @RASQAL_TRIPLE_NONE: no parts
+ * @RASQAL_TRIPLE_SUBJECT: Subject present in a triple.
+ * @RASQAL_TRIPLE_PREDICATE: Predicate present in a triple.
+ * @RASQAL_TRIPLE_OBJECT: Object present in a triple.
+ * @RASQAL_TRIPLE_ORIGIN: Origin/graph present in a triple.
+ * @RASQAL_TRIPLE_GRAPH:  Alias for RASQAL_TRIPLE_ORIGIN
+ * @RASQAL_TRIPLE_SPO: Subject, Predicate and Object present in a triple.
+ * @RASQAL_TRIPLE_SPOG: Subject, Predicate, Object, Graph present in a triple.
+ *
+ * Flags for parts of a triple.
+ */
+typedef enum {
+  RASQAL_TRIPLE_NONE     = 0,
+  RASQAL_TRIPLE_SUBJECT  = 1,
+  RASQAL_TRIPLE_PREDICATE= 2,
+  RASQAL_TRIPLE_OBJECT   = 4,
+  RASQAL_TRIPLE_ORIGIN   = 8,
+  RASQAL_TRIPLE_GRAPH    = RASQAL_TRIPLE_ORIGIN,
+  RASQAL_TRIPLE_SPO      = RASQAL_TRIPLE_SUBJECT | RASQAL_TRIPLE_PREDICATE | RASQAL_TRIPLE_OBJECT,
+  RASQAL_TRIPLE_SPOG     = RASQAL_TRIPLE_SPO | RASQAL_TRIPLE_GRAPH
+} rasqal_triple_parts;
+
+
+
+/**
+ * rasqal_triples_match:
+ * @world: rasqal_world object
+ * @user_data: User data pointer for factory methods.
+ * @bind_match: The [4]array (s,p,o,origin) bindings against the current triple match only touching triple parts given. Returns parts that were bound or 0 on failure.
+ * @next_match: Move to next match.
+ * @is_end: Check for end of triple match - return non-0 if is end.
+ * @finish: Finish triples match and destroy any allocated memory.
+ * @is_exact: non-0 if triple to match is all literal constants
+ * @finished: >0 if the match has finished
+ *
+ * Triples match structure as initialised by #rasqal_triples_source
+ * method init_triples_match.
+ */
+struct rasqal_triples_match_s {
+  rasqal_world *world;
+
+  void *user_data;
+
+  rasqal_triple_parts (*bind_match)(struct rasqal_triples_match_s* rtm, void *user_data, rasqal_variable *bindings[4], rasqal_triple_parts parts);
+
+  void (*next_match)(struct rasqal_triples_match_s* rtm, void *user_data);
+
+  int (*is_end)(struct rasqal_triples_match_s* rtm, void *user_data);
+
+  void (*finish)(struct rasqal_triples_match_s* rtm, void *user_data);
+
+  int is_exact;
+
+  int finished;
+};
+typedef struct rasqal_triples_match_s rasqal_triples_match;
+
+
+/**
+ * rasqal_triple_meta:
+ * @bindings: Variable bindings for this triple+origin to set.
+ * @triples_match: The matcher that is setting these bindings.
+ * @context: Context data used by the matcher.
+ * @parts: Bitmask of #rasqal_triple_parts flags describing the parts of the triple pattern that will bind to variables.  There may also be variables mentioned that are bound in other triple patterns even if @parts is 0.
+ * @is_exact: unused
+ * @executed: unused
+ *
+ * Metadata for triple pattern matching for one triple pattern.
+ */
+typedef struct {
+  /* triple (subject, predicate, object) and origin */
+  rasqal_variable* bindings[4];
+
+  rasqal_triples_match *triples_match;
+
+  void *context;
+
+  rasqal_triple_parts parts;
+
+  int is_exact;
+
+  int executed;
+} rasqal_triple_meta;
+
+
+/**
+ * RASQAL_TRIPLES_SOURCE_MIN_VERSION:
+ *
+ * Lowest accepted @rasqal_triples_source API version
+ */
+#define RASQAL_TRIPLES_SOURCE_MIN_VERSION 1
+
+/**
+ * RASQAL_TRIPLES_SOURCE_MAX_VERSION:
+ *
+ * Highest accepted @rasqal_triples_source API version
+ */
+#define RASQAL_TRIPLES_SOURCE_MAX_VERSION 2
+
+
+/**
+ * rasqal_triples_source_feature:
+ * @RASQAL_TRIPLES_SOURCE_FEATURE_NONE: No feature
+ * @RASQAL_TRIPLES_SOURCE_FEATURE_IOSTREAM_DATA_GRAPH: Support raptor_iostream data graphs
+ *
+ * Optional features that may be supported by a triple source factory
+ */
+typedef enum {
+  RASQAL_TRIPLES_SOURCE_FEATURE_NONE,
+  RASQAL_TRIPLES_SOURCE_FEATURE_IOSTREAM_DATA_GRAPH
+} rasqal_triples_source_feature;
+
+
+/**
+ * rasqal_triples_source:
+ * @version: API version - only V1 is defined for now
+ * @query: Source for this query.
+ * @user_data: Context user data passed into the factory methods.
+ * @init_triples_match: Factory method to initialize a new #rasqal_triples_match.
+ * @triple_present: Factory method to return presence or absence of a complete triple.
+ * @free_triples_source: Factory method to deallocate resources.
+ * @support_feature: Factory method to test support for a feature, returning non-0 if supported
+ *
+ * Triples source as initialised by a #rasqal_triples_source_factory.
+ */
+struct rasqal_triples_source_s {
+  int version;
+
+  rasqal_query* query;
+
+  void *user_data;
+
+  /* API v1 */
+  int (*init_triples_match)(rasqal_triples_match* rtm, struct rasqal_triples_source_s* rts, void *user_data, rasqal_triple_meta *m, rasqal_triple *t);
+
+  int (*triple_present)(struct rasqal_triples_source_s* rts, void *user_data, rasqal_triple *t);
+
+  void (*free_triples_source)(void *user_data);
+
+  /* API v2 onwards */
+  int (*support_feature)(void *user_data, rasqal_triples_source_feature feature);
+};
+typedef struct rasqal_triples_source_s rasqal_triples_source;
+
+
+/**
+ * RASQAL_TRIPLES_SOURCE_FACTORY_MIN_VERSION:
+ *
+ * Lowest accepted @rasqal_triples_source_factory API version
+ */
+#define RASQAL_TRIPLES_SOURCE_FACTORY_MIN_VERSION 1
+
+/**
+ * RASQAL_TRIPLES_SOURCE_FACTORY_MAX_VERSION:
+ *
+ * Highest accepted @rasqal_triples_source_factory API version
+ */
+#define RASQAL_TRIPLES_SOURCE_FACTORY_MAX_VERSION 3
+
+
+/**
+ * rasqal_triples_error_handler:
+ * @query: query object
+ * @locator: error locator (or NULL)
+ * @message: error message
+ *
+ * Triples source factory error handler callback.
+ */
+typedef void (*rasqal_triples_error_handler)(rasqal_query* query, raptor_locator* locator, const char* message);
+
+
+/**
+ * rasqal_triples_error_handler2:
+ * @world: world object
+ * @locator: error locator (or NULL)
+ * @message: error message
+ *
+ * Triples source factory error handler callback.
+ */
+typedef void (*rasqal_triples_error_handler2)(rasqal_world* world, raptor_locator* locator, const char* message);
+
+
+/**
+ * rasqal_triples_source_factory:
+ * @version: API factory version from 1 to 3
+ * @user_data: User data for triples_source_factory.
+ * @user_data_size: Size of @user_data for new_triples_source.
+ * @new_triples_source: Create a new triples source - returns non-zero on failure &lt; 0 is a 'no rdf data error', &gt; 0 is an unspecified error. Error messages are generated by rasqal internally. (V1)
+ * @init_triples_source: Initialise a new triples source V2 for a particular source URI/base URI and syntax. Returns non-zero on failure with errors reported via the handler callback by the implementation. (V2)
+ * @init_triples_source2: Initialise a new triples source V3 for a particular source URI/base URI and syntax and given data graphs. Returns non-zero on failure with errors reported via the handler callback by the implementation. If bit 0 of flags is 1, enforce RAPTOR_FEATURE_NO_NET (V3)
+ *
+ * A factory that initialises #rasqal_triples_source structures to
+ * returning matches to a triple pattern across the dataset formed
+ * from the data graphs recorded in the @query object.
+ */
+typedef struct {
+  int version;
+
+  void *user_data;
+  size_t user_data_size;
+
+  /* API v1 */
+  int (*new_triples_source)(rasqal_query* query, void *factory_user_data, void *user_data, rasqal_triples_source* rts);
+  /* API v2 onwards */
+  int (*init_triples_source)(rasqal_query* query, void *factory_user_data, void *user_data, rasqal_triples_source* rts, rasqal_triples_error_handler handler);
+  /* API v3 onwards */
+  int (*init_triples_source2)(rasqal_world* world, raptor_sequence* data_graphs, void *factory_user_data, void *user_data, rasqal_triples_source *rts, rasqal_triples_error_handler2 handler, unsigned int flags);
+} rasqal_triples_source_factory;
+
+
+/**
+ * rasqal_triples_source_factory_register_fn:
+ * @factory: factory to register
+ *
+ * Register a factory for generating triples sources #rasqal_triples_source
+ *
+ * Return value: non-0 on failure
+ */
+typedef int (*rasqal_triples_source_factory_register_fn)(rasqal_triples_source_factory *factory);
+
+
+/* set the triples_source_factory */
+RASQAL_API
+int rasqal_set_triples_source_factory(rasqal_world* world, rasqal_triples_source_factory_register_fn register_fn, void* user_data);
+
+
+
+/* The info below is solely for gtk-doc - ignore it */
+
+/**
+ * raptor_world:
+ *
+ * Internal
+ */
+
+/**
+ * RASQAL_QUERY_RESULTS_FORMATTER_DECLARED:
+ *
+ * Internal
+ */
+
+/**
+ * RASQAL_WORLD_DECLARED:
+ *
+ * Internal
+ */
+
+
+/**
+ * RASQAL_LITERAL_UDT_DEFINED
+ *
+ * Internal
+ */
+
+/**
+ * rasqal_expression_s:
+ * @world: Internal
+ * @usage: Internal
+ * @op: Internal
+ * @arg1: Internal
+ * @arg2: Internal
+ * @arg3: Internal
+ * @literal: Internal
+ * @value: Internal
+ * @name: Internal
+ * @args: Internal
+ * @params: Internal
+ * @flags: Internal
+ * @arg4: Internal
+ *
+ * Internal - see #rasqal_expression.
+ *
+ */
+
+/**
+ * bind_match:
+ * @rtm: triples match context
+ * @user_data: user data
+ * @bindings: variable binding for parts of triple (s, p, o, g)
+ * @parts: parts of triple to match
+ *
+ * Internal - see #rasqal_triples_match
+ *
+ * Return value: match parts
+*/
+
+/**
+ * next_match:
+ * @rtm: triples match context
+ * @user_data: user data
+ *
+ * Internal - see #rasqal_triples_match
+ */
+
+/**
+ * is_end:
+ * @rtm: triples match context
+ * @user_data: user data
+ *
+ * Internal - see #rasqal_triples_match
+ *
+ * Return value: non-0 if end of match
+ */
+
+/**
+ * finish:
+ * @rtm: triples match context
+ * @user_data: user data
+ *
+ * Internal - see #rasqal_triples_match
+ */
+
+/**
+ * init_triples_match:
+ * @rtm: triples match context
+ * @rts: triples match source
+ * @user_data: user data
+ * @m: triple meta
+ * @t: triple
+ *
+ * Internal - see #rasqal_triples_source
+ *
+ * Return value: non-0 on failure
+ */
+
+/**
+ * triple_present:
+ * @rts: triples match source
+ * @user_data: user data
+ * @t: triple to test for presence
+ *
+ * Internal - see #rasqal_triples_source
+ *
+ * Return value: non-0 on failure
+ */
+
+/**
+ * free_triples_source:
+ * @user_data: user data
+ *
+ * Internal - see #rasqal_triples_source
+ */
+
+/**
+ * support_feature:
+ * @user_data: user data
+ * @feature: feature to test
+ *
+ * Internal - see #rasqal_triples_source
+ *
+ * Return value: non-0 if supported
+ */
+
+/**
+ * rasqal_variables_table:
+ *
+ * Internal - for now
+ */
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif