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+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category Zend
+ * @package Zend_Db
+ * @subpackage Adapter
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ * @version $Id$
+ */
+
+/**
+ * @see Zend_Db_Adapter_Abstract
+ */
+
+/**
+ * @see Zend_Db_Statement_Sqlsrv
+ */
+
+/**
+ * @category Zend
+ * @package Zend_Db
+ * @subpackage Adapter
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license http://framework.zend.com/license/new-bsd New BSD License
+ */
+class Zend_Db_Adapter_Sqlsrv extends Zend_Db_Adapter_Abstract
+{
+ /**
+ * User-provided configuration.
+ *
+ * Basic keys are:
+ *
+ * username => (string) Connect to the database as this username.
+ * password => (string) Password associated with the username.
+ * dbname => The name of the local SQL Server instance
+ *
+ * @var array
+ */
+ protected $_config = array(
+ 'dbname' => null,
+ 'username' => null,
+ 'password' => null,
+ );
+
+ /**
+ * Last insert id from INSERT query
+ *
+ * @var int
+ */
+ protected $_lastInsertId;
+
+ /**
+ * Query used to fetch last insert id
+ *
+ * @var string
+ */
+ protected $_lastInsertSQL = 'SELECT SCOPE_IDENTITY() as Current_Identity';
+
+ /**
+ * Keys are UPPERCASE SQL datatypes or the constants
+ * Zend_Db::INT_TYPE, Zend_Db::BIGINT_TYPE, or Zend_Db::FLOAT_TYPE.
+ *
+ * Values are:
+ * 0 = 32-bit integer
+ * 1 = 64-bit integer
+ * 2 = float or decimal
+ *
+ * @var array Associative array of datatypes to values 0, 1, or 2.
+ */
+ protected $_numericDataTypes = array(
+ Zend_Db::INT_TYPE => Zend_Db::INT_TYPE,
+ Zend_Db::BIGINT_TYPE => Zend_Db::BIGINT_TYPE,
+ Zend_Db::FLOAT_TYPE => Zend_Db::FLOAT_TYPE,
+ 'INT' => Zend_Db::INT_TYPE,
+ 'SMALLINT' => Zend_Db::INT_TYPE,
+ 'TINYINT' => Zend_Db::INT_TYPE,
+ 'BIGINT' => Zend_Db::BIGINT_TYPE,
+ 'DECIMAL' => Zend_Db::FLOAT_TYPE,
+ 'FLOAT' => Zend_Db::FLOAT_TYPE,
+ 'MONEY' => Zend_Db::FLOAT_TYPE,
+ 'NUMERIC' => Zend_Db::FLOAT_TYPE,
+ 'REAL' => Zend_Db::FLOAT_TYPE,
+ 'SMALLMONEY' => Zend_Db::FLOAT_TYPE,
+ );
+
+ /**
+ * Default class name for a DB statement.
+ *
+ * @var string
+ */
+ protected $_defaultStmtClass = 'Zend_Db_Statement_Sqlsrv';
+
+ /**
+ * Creates a connection resource.
+ *
+ * @return void
+ * @throws Zend_Db_Adapter_Sqlsrv_Exception
+ */
+ protected function _connect()
+ {
+ if (is_resource($this->_connection)) {
+ // connection already exists
+ return;
+ }
+
+ if (!extension_loaded('sqlsrv')) {
+ /**
+ * @see Zend_Db_Adapter_Sqlsrv_Exception
+ */
+ throw new Zend_Db_Adapter_Sqlsrv_Exception('The Sqlsrv extension is required for this adapter but the extension is not loaded');
+ }
+
+ $serverName = $this->_config['host'];
+ if (isset($this->_config['port'])) {
+ $port = (integer) $this->_config['port'];
+ $serverName .= ', ' . $port;
+ }
+
+ $connectionInfo = array(
+ 'Database' => $this->_config['dbname'],
+ );
+
+ if (isset($this->_config['username']) && isset($this->_config['password']))
+ {
+ $connectionInfo += array(
+ 'UID' => $this->_config['username'],
+ 'PWD' => $this->_config['password'],
+ );
+ }
+ // else - windows authentication
+
+ if (!empty($this->_config['driver_options'])) {
+ foreach ($this->_config['driver_options'] as $option => $value) {
+ // A value may be a constant.
+ if (is_string($value)) {
+ $constantName = strtoupper($value);
+ if (defined($constantName)) {
+ $connectionInfo[$option] = constant($constantName);
+ } else {
+ $connectionInfo[$option] = $value;
+ }
+ }
+ }
+ }
+
+ $this->_connection = sqlsrv_connect($serverName, $connectionInfo);
+
+ if (!$this->_connection) {
+ /**
+ * @see Zend_Db_Adapter_Sqlsrv_Exception
+ */
+ throw new Zend_Db_Adapter_Sqlsrv_Exception(sqlsrv_errors());
+ }
+ }
+
+ /**
+ * Check for config options that are mandatory.
+ * Throw exceptions if any are missing.
+ *
+ * @param array $config
+ * @throws Zend_Db_Adapter_Exception
+ */
+ protected function _checkRequiredOptions(array $config)
+ {
+ // we need at least a dbname
+ if (! array_key_exists('dbname', $config)) {
+ /** @see Zend_Db_Adapter_Exception */
+ throw new Zend_Db_Adapter_Exception("Configuration array must have a key for 'dbname' that names the database instance");
+ }
+
+ if (! array_key_exists('password', $config) && array_key_exists('username', $config)) {
+ /**
+ * @see Zend_Db_Adapter_Exception
+ */
+ throw new Zend_Db_Adapter_Exception("Configuration array must have a key for 'password' for login credentials.
+ If Windows Authentication is desired, both keys 'username' and 'password' should be ommited from config.");
+ }
+
+ if (array_key_exists('password', $config) && !array_key_exists('username', $config)) {
+ /**
+ * @see Zend_Db_Adapter_Exception
+ */
+ throw new Zend_Db_Adapter_Exception("Configuration array must have a key for 'username' for login credentials.
+ If Windows Authentication is desired, both keys 'username' and 'password' should be ommited from config.");
+ }
+ }
+
+ /**
+ * Set the transaction isoltion level.
+ *
+ * @param integer|null $level A fetch mode from SQLSRV_TXN_*.
+ * @return true
+ * @throws Zend_Db_Adapter_Sqlsrv_Exception
+ */
+ public function setTransactionIsolationLevel($level = null)
+ {
+ $this->_connect();
+ $sql = null;
+
+ // Default transaction level in sql server
+ if ($level === null)
+ {
+ $level = SQLSRV_TXN_READ_COMMITTED;
+ }
+
+ switch ($level) {
+ case SQLSRV_TXN_READ_UNCOMMITTED:
+ $sql = "READ UNCOMMITTED";
+ break;
+ case SQLSRV_TXN_READ_COMMITTED:
+ $sql = "READ COMMITTED";
+ break;
+ case SQLSRV_TXN_REPEATABLE_READ:
+ $sql = "REPEATABLE READ";
+ break;
+ case SQLSRV_TXN_SNAPSHOT:
+ $sql = "SNAPSHOT";
+ break;
+ case SQLSRV_TXN_SERIALIZABLE:
+ $sql = "SERIALIZABLE";
+ break;
+ default:
+ throw new Zend_Db_Adapter_Sqlsrv_Exception("Invalid transaction isolation level mode '$level' specified");
+ }
+
+ if (!sqlsrv_query($this->_connection, "SET TRANSACTION ISOLATION LEVEL $sql;")) {
+ throw new Zend_Db_Adapter_Sqlsrv_Exception("Transaction cannot be changed to '$level'");
+ }
+
+ return true;
+ }
+
+ /**
+ * Test if a connection is active
+ *
+ * @return boolean
+ */
+ public function isConnected()
+ {
+ return (is_resource($this->_connection)
+ && (get_resource_type($this->_connection) == 'SQL Server Connection')
+ );
+ }
+
+ /**
+ * Force the connection to close.
+ *
+ * @return void
+ */
+ public function closeConnection()
+ {
+ if ($this->isConnected()) {
+ sqlsrv_close($this->_connection);
+ }
+ $this->_connection = null;
+ }
+
+ /**
+ * Returns an SQL statement for preparation.
+ *
+ * @param string $sql The SQL statement with placeholders.
+ * @return Zend_Db_Statement_Sqlsrv
+ */
+ public function prepare($sql)
+ {
+ $this->_connect();
+ $stmtClass = $this->_defaultStmtClass;
+
+ if (!class_exists($stmtClass)) {
+ /**
+ * @see Zend_Loader
+ */
+ Zend_Loader::loadClass($stmtClass);
+ }
+
+ $stmt = new $stmtClass($this, $sql);
+ $stmt->setFetchMode($this->_fetchMode);
+ return $stmt;
+ }
+
+ /**
+ * Quote a raw string.
+ *
+ * @param string $value Raw string
+ * @return string Quoted string
+ */
+ protected function _quote($value)
+ {
+ if (is_int($value)) {
+ return $value;
+ } elseif (is_float($value)) {
+ return sprintf('%F', $value);
+ }
+
+ $value = addcslashes($value, "\000\032");
+ return "'" . str_replace("'", "''", $value) . "'";
+ }
+
+ /**
+ * Gets the last ID generated automatically by an IDENTITY/AUTOINCREMENT column.
+ *
+ * As a convention, on RDBMS brands that support sequences
+ * (e.g. Oracle, PostgreSQL, DB2), this method forms the name of a sequence
+ * from the arguments and returns the last id generated by that sequence.
+ * On RDBMS brands that support IDENTITY/AUTOINCREMENT columns, this method
+ * returns the last value generated for such a column, and the table name
+ * argument is disregarded.
+ *
+ * @param string $tableName OPTIONAL Name of table.
+ * @param string $primaryKey OPTIONAL Name of primary key column.
+ * @return string
+ */
+ public function lastInsertId($tableName = null, $primaryKey = null)
+ {
+ if ($tableName) {
+ $tableName = $this->quote($tableName);
+ $sql = 'SELECT IDENT_CURRENT (' . $tableName . ') as Current_Identity';
+ return (string) $this->fetchOne($sql);
+ }
+
+ if ($this->_lastInsertId > 0) {
+ return (string) $this->_lastInsertId;
+ }
+
+ $sql = $this->_lastInsertSQL;
+ return (string) $this->fetchOne($sql);
+ }
+
+ /**
+ * Inserts a table row with specified data.
+ *
+ * @param mixed $table The table to insert data into.
+ * @param array $bind Column-value pairs.
+ * @return int The number of affected rows.
+ */
+ public function insert($table, array $bind)
+ {
+ // extract and quote col names from the array keys
+ $cols = array();
+ $vals = array();
+ foreach ($bind as $col => $val) {
+ $cols[] = $this->quoteIdentifier($col, true);
+ if ($val instanceof Zend_Db_Expr) {
+ $vals[] = $val->__toString();
+ unset($bind[$col]);
+ } else {
+ $vals[] = '?';
+ }
+ }
+
+ // build the statement
+ $sql = "INSERT INTO "
+ . $this->quoteIdentifier($table, true)
+ . ' (' . implode(', ', $cols) . ') '
+ . 'VALUES (' . implode(', ', $vals) . ')'
+ . ' ' . $this->_lastInsertSQL;
+
+ // execute the statement and return the number of affected rows
+ $stmt = $this->query($sql, array_values($bind));
+ $result = $stmt->rowCount();
+
+ $stmt->nextRowset();
+
+ $this->_lastInsertId = $stmt->fetchColumn();
+
+ return $result;
+ }
+
+ /**
+ * Returns a list of the tables in the database.
+ *
+ * @return array
+ */
+ public function listTables()
+ {
+ $this->_connect();
+ $sql = "SELECT name FROM sysobjects WHERE type = 'U' ORDER BY name";
+ return $this->fetchCol($sql);
+ }
+
+ /**
+ * Returns the column descriptions for a table.
+ *
+ * The return value is an associative array keyed by the column name,
+ * as returned by the RDBMS.
+ *
+ * The value of each array element is an associative array
+ * with the following keys:
+ *
+ * SCHEMA_NAME => string; name of schema
+ * TABLE_NAME => string;
+ * COLUMN_NAME => string; column name
+ * COLUMN_POSITION => number; ordinal position of column in table
+ * DATA_TYPE => string; SQL datatype name of column
+ * DEFAULT => string; default expression of column, null if none
+ * NULLABLE => boolean; true if column can have nulls
+ * LENGTH => number; length of CHAR/VARCHAR
+ * SCALE => number; scale of NUMERIC/DECIMAL
+ * PRECISION => number; precision of NUMERIC/DECIMAL
+ * UNSIGNED => boolean; unsigned property of an integer type
+ * PRIMARY => boolean; true if column is part of the primary key
+ * PRIMARY_POSITION => integer; position of column in primary key
+ * IDENTITY => integer; true if column is auto-generated with unique values
+ *
+ * @todo Discover integer unsigned property.
+ *
+ * @param string $tableName
+ * @param string $schemaName OPTIONAL
+ * @return array
+ */
+ public function describeTable($tableName, $schemaName = null)
+ {
+ /**
+ * Discover metadata information about this table.
+ */
+ $sql = "exec sp_columns @table_name = " . $this->quoteIdentifier($tableName, true);
+ $stmt = $this->query($sql);
+ $result = $stmt->fetchAll(Zend_Db::FETCH_NUM);
+
+ // ZF-7698
+ $stmt->closeCursor();
+
+ if (count($result) == 0) {
+ return array();
+ }
+
+ $owner = 1;
+ $table_name = 2;
+ $column_name = 3;
+ $type_name = 5;
+ $precision = 6;
+ $length = 7;
+ $scale = 8;
+ $nullable = 10;
+ $column_def = 12;
+ $column_position = 16;
+
+ /**
+ * Discover primary key column(s) for this table.
+ */
+ $tableOwner = $result[0][$owner];
+ $sql = "exec sp_pkeys @table_owner = " . $tableOwner
+ . ", @table_name = " . $this->quoteIdentifier($tableName, true);
+ $stmt = $this->query($sql);
+
+ $primaryKeysResult = $stmt->fetchAll(Zend_Db::FETCH_NUM);
+ $primaryKeyColumn = array();
+
+ // Per http://msdn.microsoft.com/en-us/library/ms189813.aspx,
+ // results from sp_keys stored procedure are:
+ // 0=TABLE_QUALIFIER 1=TABLE_OWNER 2=TABLE_NAME 3=COLUMN_NAME 4=KEY_SEQ 5=PK_NAME
+
+ $pkey_column_name = 3;
+ $pkey_key_seq = 4;
+ foreach ($primaryKeysResult as $pkeysRow) {
+ $primaryKeyColumn[$pkeysRow[$pkey_column_name]] = $pkeysRow[$pkey_key_seq];
+ }
+
+ $desc = array();
+ $p = 1;
+ foreach ($result as $key => $row) {
+ $identity = false;
+ $words = explode(' ', $row[$type_name], 2);
+ if (isset($words[0])) {
+ $type = $words[0];
+ if (isset($words[1])) {
+ $identity = (bool) preg_match('/identity/', $words[1]);
+ }
+ }
+
+ $isPrimary = array_key_exists($row[$column_name], $primaryKeyColumn);
+ if ($isPrimary) {
+ $primaryPosition = $primaryKeyColumn[$row[$column_name]];
+ } else {
+ $primaryPosition = null;
+ }
+
+ $desc[$this->foldCase($row[$column_name])] = array(
+ 'SCHEMA_NAME' => null, // @todo
+ 'TABLE_NAME' => $this->foldCase($row[$table_name]),
+ 'COLUMN_NAME' => $this->foldCase($row[$column_name]),
+ 'COLUMN_POSITION' => (int) $row[$column_position],
+ 'DATA_TYPE' => $type,
+ 'DEFAULT' => $row[$column_def],
+ 'NULLABLE' => (bool) $row[$nullable],
+ 'LENGTH' => $row[$length],
+ 'SCALE' => $row[$scale],
+ 'PRECISION' => $row[$precision],
+ 'UNSIGNED' => null, // @todo
+ 'PRIMARY' => $isPrimary,
+ 'PRIMARY_POSITION' => $primaryPosition,
+ 'IDENTITY' => $identity,
+ );
+ }
+
+ return $desc;
+ }
+
+ /**
+ * Leave autocommit mode and begin a transaction.
+ *
+ * @return void
+ * @throws Zend_Db_Adapter_Sqlsrv_Exception
+ */
+ protected function _beginTransaction()
+ {
+ if (!sqlsrv_begin_transaction($this->_connection)) {
+ throw new Zend_Db_Adapter_Sqlsrv_Exception(sqlsrv_errors());
+ }
+ }
+
+ /**
+ * Commit a transaction and return to autocommit mode.
+ *
+ * @return void
+ * @throws Zend_Db_Adapter_Sqlsrv_Exception
+ */
+ protected function _commit()
+ {
+ if (!sqlsrv_commit($this->_connection)) {
+ throw new Zend_Db_Adapter_Sqlsrv_Exception(sqlsrv_errors());
+ }
+ }
+
+ /**
+ * Roll back a transaction and return to autocommit mode.
+ *
+ * @return void
+ * @throws Zend_Db_Adapter_Sqlsrv_Exception
+ */
+ protected function _rollBack()
+ {
+ if (!sqlsrv_rollback($this->_connection)) {
+ throw new Zend_Db_Adapter_Sqlsrv_Exception(sqlsrv_errors());
+ }
+ }
+
+ /**
+ * Set the fetch mode.
+ *
+ * @todo Support FETCH_CLASS and FETCH_INTO.
+ *
+ * @param integer $mode A fetch mode.
+ * @return void
+ * @throws Zend_Db_Adapter_Sqlsrv_Exception
+ */
+ public function setFetchMode($mode)
+ {
+ switch ($mode) {
+ case Zend_Db::FETCH_NUM: // seq array
+ case Zend_Db::FETCH_ASSOC: // assoc array
+ case Zend_Db::FETCH_BOTH: // seq+assoc array
+ case Zend_Db::FETCH_OBJ: // object
+ $this->_fetchMode = $mode;
+ break;
+ case Zend_Db::FETCH_BOUND: // bound to PHP variable
+ throw new Zend_Db_Adapter_Sqlsrv_Exception('FETCH_BOUND is not supported yet');
+ break;
+ default:
+ throw new Zend_Db_Adapter_Sqlsrv_Exception("Invalid fetch mode '$mode' specified");
+ break;
+ }
+ }
+
+ /**
+ * Adds an adapter-specific LIMIT clause to the SELECT statement.
+ *
+ * @param string $sql
+ * @param integer $count
+ * @param integer $offset OPTIONAL
+ * @return string
+ * @throws Zend_Db_Adapter_Sqlsrv_Exception
+ */
+ public function limit($sql, $count, $offset = 0)
+ {
+ $count = intval($count);
+ if ($count <= 0) {
+ throw new Zend_Db_Adapter_Exception("LIMIT argument count=$count is not valid");
+ }
+
+ $offset = intval($offset);
+ if ($offset < 0) {
+ /** @see Zend_Db_Adapter_Exception */
+ throw new Zend_Db_Adapter_Exception("LIMIT argument offset=$offset is not valid");
+ }
+
+ if ($offset == 0) {
+ $sql = preg_replace('/^SELECT\s/i', 'SELECT TOP ' . $count . ' ', $sql);
+ } else {
+ $orderby = stristr($sql, 'ORDER BY');
+
+ if (!$orderby) {
+ $over = 'ORDER BY (SELECT 0)';
+ } else {
+ $over = preg_replace('/\"[^,]*\".\"([^,]*)\"/i', '"inner_tbl"."$1"', $orderby);
+ }
+
+ // Remove ORDER BY clause from $sql
+ $sql = preg_replace('/\s+ORDER BY(.*)/', '', $sql);
+
+ // Add ORDER BY clause as an argument for ROW_NUMBER()
+ $sql = "SELECT ROW_NUMBER() OVER ($over) AS \"ZEND_DB_ROWNUM\", * FROM ($sql) AS inner_tbl";
+
+ $start = $offset + 1;
+
+ if ($count == PHP_INT_MAX) {
+ $sql = "WITH outer_tbl AS ($sql) SELECT * FROM outer_tbl WHERE \"ZEND_DB_ROWNUM\" >= $start";
+ }
+ else {
+ $end = $offset + $count;
+ $sql = "WITH outer_tbl AS ($sql) SELECT * FROM outer_tbl WHERE \"ZEND_DB_ROWNUM\" BETWEEN $start AND $end";
+ }
+ }
+
+ return $sql;
+ }
+
+ /**
+ * Check if the adapter supports real SQL parameters.
+ *
+ * @param string $type 'positional' or 'named'
+ * @return bool
+ */
+ public function supportsParameters($type)
+ {
+ if ($type == 'positional') {
+ return true;
+ }
+
+ // if its 'named' or anything else
+ return false;
+ }
+
+ /**
+ * Retrieve server version in PHP style
+ *
+ * @return string
+ */
+ public function getServerVersion()
+ {
+ $this->_connect();
+ $serverInfo = sqlsrv_server_info($this->_connection);
+
+ if ($serverInfo !== false) {
+ return $serverInfo['SQLServerVersion'];
+ }
+
+ return null;
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-03 21:37:48 +0000