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Diffstat (limited to 'storage/connect/tabjson.h')
| -rw-r--r-- | storage/connect/tabjson.h | 323 |
1 files changed, 323 insertions, 0 deletions
diff --git a/storage/connect/tabjson.h b/storage/connect/tabjson.h new file mode 100644 index 00000000..623e5b6d --- /dev/null +++ b/storage/connect/tabjson.h @@ -0,0 +1,323 @@ +/*************** tabjson H Declares Source Code File (.H) **************/ +/* Name: tabjson.h Version 1.3 */ +/* */ +/* (C) Copyright to the author Olivier BERTRAND 2014 - 2021 */ +/* */ +/* This file contains the JSON classes declares. */ +/***********************************************************************/ +#pragma once +//#include "osutil.h" // Unuseful and bad for OEM +#include "block.h" +#include "colblk.h" +#include "json.h" + +enum JMODE {MODE_OBJECT, MODE_ARRAY, MODE_VALUE}; + +typedef class JSONDEF *PJDEF; +typedef class TDBJSON *PJTDB; +typedef class JSONCOL *PJCOL; +class TDBJSN; +DllExport PQRYRES JSONColumns(PGLOBAL, PCSZ, PCSZ, PTOS, bool); + +/***********************************************************************/ +/* The JSON tree node. Can be an Object or an Array. */ +/***********************************************************************/ +typedef struct _jnode { + PSZ Key; // The key used for object + OPVAL Op; // Operator used for this node + PVAL CncVal; // To cont value used for OP_CNC + PVAL Valp; // The internal array VALUE + int Rank; // The rank in array + int Rx; // Read row number + int Nx; // Next to read row number +} JNODE, *PJNODE; + +typedef struct _jncol { + struct _jncol *Next; + char *Name; + char *Fmt; + JTYP Type; + int Len; + int Scale; + bool Cbn; + bool Found; +} JCOL, *PJCL; + +/***********************************************************************/ +/* Class used to get the columns of a mongo collection. */ +/***********************************************************************/ +class JSONDISC : public BLOCK { +public: + // Constructor + JSONDISC(PGLOBAL g, uint *lg); + + // Functions + int GetColumns(PGLOBAL g, PCSZ db, PCSZ dsn, PTOS topt); + bool Find(PGLOBAL g, PJVAL jvp, PCSZ key, int j); + void AddColumn(PGLOBAL g); + + // Members + JCOL jcol; + PJCL jcp, fjcp, pjcp; +//PVL vlp; + PJDEF tdp; + TDBJSN *tjnp; + PJTDB tjsp; + PJPR jpp; + PJSON jsp; + PJOB row; + PCSZ sep; + PCSZ strfy; + char colname[65], fmt[129], buf[16]; + uint *length; + int i, n, bf, ncol, lvl, sz, limit; + bool all; +}; // end of JSONDISC + +/***********************************************************************/ +/* JSON table. */ +/***********************************************************************/ +class DllExport JSONDEF : public DOSDEF { /* Table description */ + friend class TDBJSON; + friend class TDBJSN; + friend class TDBJCL; + friend class JSONDISC; +#if defined(CMGO_SUPPORT) + friend class CMGFAM; +#endif // CMGO_SUPPORT +#if defined(JAVA_SUPPORT) + friend class JMGFAM; +#endif // JAVA_SUPPORT +public: + // Constructor + JSONDEF(void); + + // Implementation + virtual const char *GetType(void) {return "JSON";} + + // Methods + virtual bool DefineAM(PGLOBAL g, LPCSTR am, int poff); + virtual PTDB GetTable(PGLOBAL g, MODE m); + + protected: + // Members + JMODE Jmode; /* MODE_OBJECT by default */ + PCSZ Objname; /* Name of first level object */ + PCSZ Xcol; /* Name of expandable column */ + int Limit; /* Limit of multiple values */ + int Pretty; /* Depends on file structure */ + int Base; /* The array index base */ + bool Strict; /* Strict syntax checking */ + char Sep; /* The Jpath separator */ + const char *Uri; /* MongoDB connection URI */ + PCSZ Collname; /* External collection name */ + PSZ Options; /* Colist ; Pipe */ + PSZ Filter; /* Filter */ + PSZ Driver; /* MongoDB Driver (C or JAVA) */ + bool Pipe; /* True if Colist is a pipeline */ + int Version; /* Driver version */ + PSZ Wrapname; /* MongoDB java wrapper name */ + }; // end of JSONDEF + +/* -------------------------- TDBJSN class --------------------------- */ + +/***********************************************************************/ +/* This is the JSN Access Method class declaration. */ +/* The table is a DOS file, each record being a JSON object. */ +/***********************************************************************/ +class DllExport TDBJSN : public TDBDOS { + friend class JSONCOL; + friend class JSONDEF; + friend class JSONDISC; +#if defined(CMGO_SUPPORT) + friend class CMGFAM; +#endif // CMGO_SUPPORT +#if defined(JAVA_SUPPORT) + friend class JMGFAM; +#endif // JAVA_SUPPORT +public: + // Constructor + TDBJSN(PJDEF tdp, PTXF txfp); + TDBJSN(TDBJSN *tdbp); + + // Implementation + virtual AMT GetAmType(void) {return TYPE_AM_JSN;} + virtual bool SkipHeader(PGLOBAL g); + virtual PTDB Duplicate(PGLOBAL g) {return (PTDB)new(g) TDBJSN(this);} + PJSON GetRow(void) {return Row;} + void SetG(PGLOBAL g) {G = g;} + + // Methods + virtual PTDB Clone(PTABS t); + virtual PCOL MakeCol(PGLOBAL g, PCOLDEF cdp, PCOL cprec, int n); + virtual PCOL InsertSpecialColumn(PCOL colp); + virtual int RowNumber(PGLOBAL g, bool b = FALSE) + {return (b) ? M : N;} + virtual bool CanBeFiltered(void) + {return Txfp->GetAmType() == TYPE_AM_MGO || !Xcol;} + + // Database routines + //virtual int Cardinality(PGLOBAL g); + //virtual int GetMaxSize(PGLOBAL g); + virtual bool OpenDB(PGLOBAL g); + virtual int ReadDB(PGLOBAL g); + virtual bool PrepareWriting(PGLOBAL g); + virtual int WriteDB(PGLOBAL g); + virtual void CloseDB(PGLOBAL g); + + // Specific routine + virtual int EstimatedLength(void); + +protected: + PJSON FindRow(PGLOBAL g); + bool MakeTopTree(PGLOBAL g, PJSON jsp); + + // Members + PGLOBAL G; // Support of parse memory + PJSON Top; // The top JSON tree + PJSON Row; // The current row + PJVAL Val; // The value of the current row + PJCOL Colp; // The multiple column + JMODE Jmode; // MODE_OBJECT by default + PCSZ Objname; // The table object name + PCSZ Xcol; // Name of expandable column + int Fpos; // The current row index + int N; // The current Rownum + int M; // Index of multiple value + int Limit; // Limit of multiple values + int Pretty; // Depends on file structure + int NextSame; // Same next row + int SameRow; // Same row nb + int Xval; // Index of expandable array + int B; // Array index base + char Sep; // The Jpath separator + bool Strict; // Strict syntax checking + bool Comma; // Row has final comma + bool Xpdable; // False: expandable columns are NULL +}; // end of class TDBJSN + +/* -------------------------- JSONCOL class -------------------------- */ + +/***********************************************************************/ +/* Class JSONCOL: JSON access method column descriptor. */ +/***********************************************************************/ +class DllExport JSONCOL : public DOSCOL { + friend class TDBJSN; + friend class TDBJSON; +#if defined(CMGO_SUPPORT) + friend class CMGFAM; +#endif // CMGO_SUPPORT +#if defined(JAVA_SUPPORT) + friend class JMGFAM; +#endif // JAVA_SUPPORT +public: + // Constructors + JSONCOL(PGLOBAL g, PCOLDEF cdp, PTDB tdbp, PCOL cprec, int i); + JSONCOL(JSONCOL *colp, PTDB tdbp); // Constructor used in copy process + + // Implementation + virtual int GetAmType(void) {return Tjp->GetAmType();} + virtual bool Stringify(void) { return Sgfy; } + + // Methods + virtual bool SetBuffer(PGLOBAL g, PVAL value, bool ok, bool check); + bool ParseJpath(PGLOBAL g); + virtual PSZ GetJpath(PGLOBAL g, bool proj); + virtual void ReadColumn(PGLOBAL g); + virtual void WriteColumn(PGLOBAL g); + + protected: + bool CheckExpand(PGLOBAL g, int i, PSZ nm, bool b); + bool SetArrayOptions(PGLOBAL g, char *p, int i, PSZ nm); + PVAL GetColumnValue(PGLOBAL g, PJSON row, int i); + PVAL ExpandArray(PGLOBAL g, PJAR arp, int n); + PVAL CalculateArray(PGLOBAL g, PJAR arp, int n); + PVAL MakeJson(PGLOBAL g, PJSON jsp, int n); + PJVAL GetRowValue(PGLOBAL g, PJSON row, int i); + void SetJsonValue(PGLOBAL g, PVAL vp, PJVAL val); + PJSON GetRow(PGLOBAL g); + + // Default constructor not to be used + JSONCOL(void) {} + + // Members + PGLOBAL G; // Support of parse memory + TDBJSN *Tjp; // To the JSN table block + PVAL MulVal; // To value used by multiple column + char *Jpath; // The json path + JNODE *Nodes; // The intermediate objects + int Nod; // The number of intermediate objects + int Xnod; // Index of multiple values + char Sep; // The Jpath separator + bool Xpd; // True for expandable column + bool Parsed; // True when parsed + bool Warned; // True when warning issued + bool Sgfy; // True if stringified +}; // end of class JSONCOL + +/* -------------------------- TDBJSON class -------------------------- */ + +/***********************************************************************/ +/* This is the JSON Access Method class declaration. */ +/***********************************************************************/ +class DllExport TDBJSON : public TDBJSN { + friend class JSONDEF; + friend class JSONCOL; + public: + // Constructor + TDBJSON(PJDEF tdp, PTXF txfp); + TDBJSON(PJTDB tdbp); + + // Implementation + virtual AMT GetAmType(void) {return TYPE_AM_JSON;} + virtual PTDB Duplicate(PGLOBAL g) {return (PTDB)new(g) TDBJSON(this);} + PJAR GetDoc(void) {return Doc;} + + // Methods + virtual PTDB Clone(PTABS t); + + // Database routines + virtual int Cardinality(PGLOBAL g); + virtual int GetMaxSize(PGLOBAL g); + virtual void ResetSize(void); + virtual int GetProgCur(void) {return N;} + virtual int GetRecpos(void); + virtual bool SetRecpos(PGLOBAL g, int recpos); + virtual bool OpenDB(PGLOBAL g); + virtual int ReadDB(PGLOBAL g); + virtual bool PrepareWriting(PGLOBAL g) {return false;} + virtual int WriteDB(PGLOBAL g); + virtual int DeleteDB(PGLOBAL g, int irc); + virtual void CloseDB(PGLOBAL g); + int MakeDocument(PGLOBAL g); + + // Optimization routines + virtual int MakeIndex(PGLOBAL g, PIXDEF pxdf, bool add); + + protected: + int MakeNewDoc(PGLOBAL g); + + // Members + PJAR Doc; // The document array + int Multiple; // 0: No 1: DIR 2: Section 3: filelist + bool Done; // True when document parsing is done + bool Changed; // After Update, Insert or Delete + }; // end of class TDBJSON + +/***********************************************************************/ +/* This is the class declaration for the JSON catalog table. */ +/***********************************************************************/ +class DllExport TDBJCL : public TDBCAT { + public: + // Constructor + TDBJCL(PJDEF tdp); + + protected: + // Specific routines + virtual PQRYRES GetResult(PGLOBAL g); + + // Members + PTOS Topt; + PCSZ Db; + PCSZ Dsn; + }; // end of class TDBJCL |