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mariadb/storage/connect/mycat.cc
Olivier Bertrand 2cb4b152c8 ===================================================================== 
This new CONNECT version 1.07 fully implements NOSQL support.
It allows working on JSON or XML data retrieved as REST query results
from all binary distributions of MariaDB when cpprestsdk is installed
and the GetRest library is available.
=====================================================================
- Make Rest available for MariaDB binary distributed versions.
  Change RestGet function so it can be called from a library.
  modified:   storage/connect/CMakeLists.txt
  modified:   storage/connect/restget.cpp
  modified:   storage/connect/tabrest.cpp

- Make column FLAG option available to discovery functions.
  modified:   storage/connect/ha_connect.cc
  modified:   storage/connect/plgdbsem.h

- Update CONNECT version number and date.
  modified:   storage/connect/ha_connect.cc

- Move OEMColumns function from mycat.cc to reldef.cpp.
  modified:   storage/connect/mycat.cc
  modified:   storage/connect/reldef.cpp

- Allocate tables as TABREF (was RELDEF)
  modified:   storage/connect/mycat.cc
  modified:   storage/connect/mycat.h

- Fix MDEV-20845 by commenting out TIMEOUT setting.
  modified:   storage/connect/myconn.cpp

- Call DefineAM before calling GetColCatInfo. Column offset
  is now based on record format instead of table type.
  The RECFM_VCT format was added.
  This enables tables to specify the record format and is
  useful in particular for OEM tables.
  modified:   storage/connect/plgdbsem.h
  modified:   storage/connect/reldef.cpp
  modified:   storage/connect/reldef.h
  modified:   storage/connect/tabdos.cpp
  modified:   storage/connect/tabdos.h
  modified:   storage/connect/tabfix.cpp
  modified:   storage/connect/tabfmt.cpp
  modified:   storage/connect/tabmysql.cpp
  modified:   storage/connect/tabutil.cpp
  modified:   storage/connect/tabutil.h
  modified:   storage/connect/tabvct.cpp
  modified:   storage/connect/xindex.cpp
2019-11-16 14:59:54 +01:00

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/* Copyright (C) MariaDB Corporation Ab
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
/*************** Mycat CC Program Source Code File (.CC) ***************/
/* PROGRAM NAME: MYCAT */
/* ------------- */
/* Version 1.7 */
/* */
/* Author: Olivier Bertrand 2012 - 2019 */
/* */
/* WHAT THIS PROGRAM DOES: */
/* ----------------------- */
/* This program are the DB description related routines. */
/***********************************************************************/
/***********************************************************************/
/* Include relevant MariaDB header file. */
/***********************************************************************/
#define DONT_DEFINE_VOID
#include <my_global.h>
#if defined(UNIX)
#include <unistd.h>
#include <string.h>
#endif
#include "handler.h"
#undef OFFSET
/***********************************************************************/
/* Include application header files */
/* */
/* global.h is header containing all global declarations. */
/* plgdbsem.h is header containing DB application declarations. */
/* tabdos.h is header containing TDBDOS classes declarations. */
/* MYCAT.h is header containing DB description declarations. */
/***********************************************************************/
#if defined(UNIX)
#include "osutil.h"
#endif // UNIX
#include "global.h"
#include "plgdbsem.h"
//#include "reldef.h"
#include "xtable.h"
#include "tabext.h"
#include "tabcol.h"
#include "filamtxt.h"
#include "tabdos.h"
#include "tabfmt.h"
#if defined(VCT_SUPPORT)
#include "tabvct.h"
#endif // VCT_SUPPORT
#include "tabsys.h"
#if defined(__WIN__)
#include "tabmac.h"
#include "tabwmi.h"
#endif // __WIN__
//#include "tabtbl.h"
#include "tabxcl.h"
#include "tabtbl.h"
#include "taboccur.h"
#include "tabmul.h"
#include "tabmysql.h"
#if defined(ODBC_SUPPORT)
#define NODBC
#include "tabodbc.h"
#endif // ODBC_SUPPORT
#if defined(JAVA_SUPPORT)
#define NJDBC
#include "tabjdbc.h"
#endif // JAVA_SUPPORT
#include "tabpivot.h"
#include "tabvir.h"
#include "tabjson.h"
#include "ha_connect.h"
#if defined(XML_SUPPORT)
#include "tabxml.h"
#endif // XML_SUPPORT
#if defined(JAVA_SUPPORT) || defined(CMGO_SUPPORT)
#include "mongo.h"
#endif // JAVA_SUPPORT || CMGO_SUPPORT
#if defined(ZIP_SUPPORT)
#include "tabzip.h"
#endif // ZIP_SUPPORT
#if defined(REST_SUPPORT)
#include "tabrest.h"
#endif // REST_SUPPORT
#include "mycat.h"
/***********************************************************************/
/* Extern static variables. */
/***********************************************************************/
#if defined(__WIN__)
extern "C" HINSTANCE s_hModule; // Saved module handle
#endif // !__WIN__
#if defined(JAVA_SUPPORT) || defined(CMGO_SUPPORT)
bool MongoEnabled(void);
#endif // JAVA_SUPPORT || CMGO_SUPPORT
/***********************************************************************/
/* Get the plugin directory. */
/***********************************************************************/
char *GetPluginDir(void)
{
return opt_plugin_dir;
} // end of GetPluginDir
/***********************************************************************/
/* Get a unique enum table type ID. */
/***********************************************************************/
TABTYPE GetTypeID(const char *type)
{
return (!type) ? TAB_UNDEF
: (!stricmp(type, "DOS")) ? TAB_DOS
: (!stricmp(type, "FIX")) ? TAB_FIX
: (!stricmp(type, "BIN")) ? TAB_BIN
: (!stricmp(type, "CSV")) ? TAB_CSV
: (!stricmp(type, "FMT")) ? TAB_FMT
: (!stricmp(type, "DBF")) ? TAB_DBF
#if defined(XML_SUPPORT)
: (!stricmp(type, "XML")) ? TAB_XML
#endif
: (!stricmp(type, "INI")) ? TAB_INI
: (!stricmp(type, "VEC")) ? TAB_VEC
#if defined(ODBC_SUPPORT)
: (!stricmp(type, "ODBC")) ? TAB_ODBC
#endif
#if defined(JAVA_SUPPORT)
: (!stricmp(type, "JDBC")) ? TAB_JDBC
#endif
#if defined(JAVA_SUPPORT) || defined(CMGO_SUPPORT)
: (!stricmp(type, "MONGO") && MongoEnabled()) ? TAB_MONGO
#endif
: (!stricmp(type, "MYSQL")) ? TAB_MYSQL
: (!stricmp(type, "MYPRX")) ? TAB_MYSQL
: (!stricmp(type, "DIR")) ? TAB_DIR
#if defined(__WIN__)
: (!stricmp(type, "MAC")) ? TAB_MAC
: (!stricmp(type, "WMI")) ? TAB_WMI
#endif
: (!stricmp(type, "TBL")) ? TAB_TBL
: (!stricmp(type, "XCOL")) ? TAB_XCL
: (!stricmp(type, "OCCUR")) ? TAB_OCCUR
: (!stricmp(type, "CATLG")) ? TAB_PRX // Legacy
: (!stricmp(type, "PROXY")) ? TAB_PRX
: (!stricmp(type, "PIVOT")) ? TAB_PIVOT
: (!stricmp(type, "VIR")) ? TAB_VIR
: (!stricmp(type, "JSON")) ? TAB_JSON
#if defined(ZIP_SUPPORT)
: (!stricmp(type, "ZIP")) ? TAB_ZIP
#endif
: (!stricmp(type, "OEM")) ? TAB_OEM : TAB_NIY;
} // end of GetTypeID
/***********************************************************************/
/* Return true for table types based on file. */
/***********************************************************************/
bool IsFileType(TABTYPE type)
{
bool isfile;
switch (type) {
case TAB_DOS:
case TAB_FIX:
case TAB_BIN:
case TAB_CSV:
case TAB_FMT:
case TAB_DBF:
case TAB_XML:
case TAB_INI:
case TAB_VEC:
case TAB_JSON:
case TAB_REST:
// case TAB_ZIP:
isfile= true;
break;
default:
isfile= false;
break;
} // endswitch type
return isfile;
} // end of IsFileType
/***********************************************************************/
/* Return true for table types returning exact row count. */
/***********************************************************************/
bool IsExactType(TABTYPE type)
{
bool exact;
switch (type) {
case TAB_FIX:
case TAB_BIN:
case TAB_DBF:
// case TAB_XML: depends on Multiple || Xpand || Coltype
// case TAB_JSON: depends on Multiple || Xpand || Coltype
case TAB_VEC:
case TAB_VIR:
exact= true;
break;
default:
exact= false;
break;
} // endswitch type
return exact;
} // end of IsExactType
/***********************************************************************/
/* Return true for table types accepting null fields. */
/***********************************************************************/
bool IsTypeNullable(TABTYPE type)
{
bool nullable;
switch (type) {
case TAB_MAC:
case TAB_DIR:
nullable= false;
break;
default:
nullable= true;
break;
} // endswitch type
return nullable;
} // end of IsTypeNullable
/***********************************************************************/
/* Return true for fixed record length tables. */
/***********************************************************************/
bool IsTypeFixed(TABTYPE type)
{
bool fix;
switch (type) {
case TAB_FIX:
case TAB_BIN:
case TAB_VEC:
// case TAB_DBF: ???
fix= true;
break;
default:
fix= false;
break;
} // endswitch type
return fix;
} // end of IsTypeFixed
/***********************************************************************/
/* Return true for table indexable by XINDEX. */
/***********************************************************************/
bool IsTypeIndexable(TABTYPE type)
{
bool idx;
switch (type) {
case TAB_DOS:
case TAB_CSV:
case TAB_FMT:
case TAB_FIX:
case TAB_BIN:
case TAB_VEC:
case TAB_DBF:
case TAB_JSON:
idx= true;
break;
default:
idx= false;
break;
} // endswitch type
return idx;
} // end of IsTypeIndexable
/***********************************************************************/
/* Return index type: 0 NO, 1 XINDEX, 2 REMOTE. */
/***********************************************************************/
int GetIndexType(TABTYPE type)
{
int xtyp;
switch (type) {
case TAB_DOS:
case TAB_CSV:
case TAB_FMT:
case TAB_FIX:
case TAB_BIN:
case TAB_VEC:
case TAB_DBF:
case TAB_JSON:
xtyp= 1;
break;
case TAB_MYSQL:
case TAB_ODBC:
case TAB_JDBC:
case TAB_MONGO:
xtyp= 2;
break;
case TAB_VIR:
xtyp= 3;
break;
default:
xtyp= 0;
break;
} // endswitch type
return xtyp;
} // end of GetIndexType
/***********************************************************************/
/* Get a unique enum catalog function ID. */
/***********************************************************************/
uint GetFuncID(const char *func)
{
uint fnc;
if (!func)
fnc= FNC_NO;
else if (!strnicmp(func, "col", 3))
fnc= FNC_COL;
else if (!strnicmp(func, "tab", 3))
fnc= FNC_TABLE;
else if (!stricmp(func, "dsn") ||
!strnicmp(func, "datasource", 10) ||
!strnicmp(func, "source", 6) ||
!strnicmp(func, "sqldatasource", 13))
fnc= FNC_DSN;
else if (!strnicmp(func, "driver", 6) ||
!strnicmp(func, "sqldriver", 9))
fnc= FNC_DRIVER;
else
fnc= FNC_NIY;
return fnc;
} // end of GetFuncID
/* ------------------------- Class CATALOG --------------------------- */
/***********************************************************************/
/* CATALOG Constructor. */
/***********************************************************************/
CATALOG::CATALOG(void)
{
#if defined(__WIN__)
//DataPath= ".\\";
#else // !__WIN__
//DataPath= "./";
#endif // !__WIN__
memset(&Ctb, 0, sizeof(CURTAB));
Cbuf= NULL;
Cblen= 0;
DefHuge= false;
} // end of CATALOG constructor
/* -------------------------- Class MYCAT ---------------------------- */
/***********************************************************************/
/* MYCAT Constructor. */
/***********************************************************************/
MYCAT::MYCAT(PHC hc) : CATALOG()
{
Hc= hc;
DefHuge= false;
} // end of MYCAT constructor
/***********************************************************************/
/* Nothing to do for CONNECT. */
/***********************************************************************/
void MYCAT::Reset(void)
{
} // end of Reset
/***********************************************************************/
/* GetTableDesc: retrieve a table descriptor. */
/* Look for a table descriptor matching the name and type. */
/***********************************************************************/
PTABDEF MYCAT::GetTableDesc(PGLOBAL g, PTABLE tablep,
LPCSTR type, PRELDEF *)
{
PTABDEF tdp= NULL;
if (trace(1))
htrc("GetTableDesc: name=%s am=%s\n", tablep->GetName(), SVP(type));
// If not specified get the type of this table
//if (!type)
// type= Hc->GetStringOption("Type","*");
tdp= MakeTableDesc(g, tablep, type);
if (trace(1))
htrc("GetTableDesc: tdp=%p\n", tdp);
return tdp;
} // end of GetTableDesc
/***********************************************************************/
/* MakeTableDesc: make a table/view description. */
/* Note: caller must check if name already exists before calling it. */
/***********************************************************************/
PTABDEF MYCAT::MakeTableDesc(PGLOBAL g, PTABLE tablep, LPCSTR am)
{
TABTYPE tc;
LPCSTR name= (PSZ)PlugDup(g, tablep->GetName());
LPCSTR schema= (PSZ)PlugDup(g, tablep->GetSchema());
PTABDEF tdp= NULL;
if (trace(1))
htrc("MakeTableDesc: name=%s schema=%s am=%s\n",
name, SVP(schema), SVP(am));
/*********************************************************************/
/* Get a unique enum identifier for types. */
/*********************************************************************/
if (!am) {
tc= Hc->GetRealType();
am= Hc->GetStringOption("Type","*");
} else
tc= GetTypeID(am);
switch (tc) {
case TAB_FIX:
case TAB_BIN:
case TAB_DBF:
case TAB_DOS: tdp= new(g) DOSDEF; break;
case TAB_CSV:
case TAB_FMT: tdp= new(g) CSVDEF; break;
case TAB_INI: tdp= new(g) INIDEF; break;
case TAB_DIR: tdp= new(g) DIRDEF; break;
#if defined(XML_SUPPORT)
case TAB_XML: tdp= new(g) XMLDEF; break;
#endif // XML_SUPPORT
#if defined(VCT_SUPPORT)
case TAB_VEC: tdp = new(g) VCTDEF; break;
#endif // VCT_SUPPORT
#if defined(ODBC_SUPPORT)
case TAB_ODBC: tdp= new(g) ODBCDEF; break;
#endif // ODBC_SUPPORT
#if defined(JAVA_SUPPORT)
case TAB_JDBC: tdp= new(g) JDBCDEF; break;
#endif // JAVA_SUPPORT
#if defined(__WIN__)
case TAB_MAC: tdp= new(g) MACDEF; break;
case TAB_WMI: tdp= new(g) WMIDEF; break;
#endif // __WIN__
case TAB_OEM: tdp= new(g) OEMDEF; break;
case TAB_TBL: tdp= new(g) TBLDEF; break;
case TAB_XCL: tdp= new(g) XCLDEF; break;
case TAB_PRX: tdp= new(g) PRXDEF; break;
case TAB_OCCUR: tdp= new(g) OCCURDEF; break;
case TAB_MYSQL: tdp= new(g) MYSQLDEF; break;
case TAB_PIVOT: tdp= new(g) PIVOTDEF; break;
case TAB_VIR: tdp= new(g) VIRDEF; break;
case TAB_JSON: tdp= new(g) JSONDEF; break;
#if defined(ZIP_SUPPORT)
case TAB_ZIP: tdp = new(g) ZIPDEF; break;
#endif // ZIP_SUPPORT
#if defined(REST_SUPPORT)
case TAB_REST: tdp= new (g) RESTDEF; break;
#endif // REST_SUPPORT
#if defined(JAVA_SUPPORT) || defined(CMGO_SUPPORT)
case TAB_MONGO:
if (MongoEnabled()) {
tdp = new(g) MGODEF;
break;
} // endif enabled
// fall through
#endif // JAVA_SUPPORT || CMGO_SUPPORT
default:
sprintf(g->Message, MSG(BAD_TABLE_TYPE), am, name);
} // endswitch
// Do make the table/view definition
if (tdp && tdp->Define(g, this, name, schema, am))
tdp = NULL;
if (trace(1))
htrc("Table %s made\n", am);
return tdp;
} // end of MakeTableDesc
/***********************************************************************/
/* Initialize a Table Description Block construction. */
/***********************************************************************/
PTDB MYCAT::GetTable(PGLOBAL g, PTABLE tablep, MODE mode, LPCSTR type)
{
PTABDEF tdp;
PTDB tdbp= NULL;
// LPCSTR name= tablep->GetName();
if (trace(1))
htrc("GetTableDB: name=%s\n", tablep->GetName());
// Look for the description of the requested table
tdp= GetTableDesc(g, tablep, type);
if (tdp) {
if (trace(1))
htrc("tdb=%p type=%s\n", tdp, tdp->GetType());
if (tablep->GetSchema())
tdp->Database = SetPath(g, tablep->GetSchema());
if (trace(2))
htrc("Going to get table...\n");
tdbp= tdp->GetTable(g, mode);
} // endif tdp
if (tdbp) {
if (trace(1))
htrc("tdbp=%p name=%s amtype=%d\n", tdbp, tdbp->GetName(),
tdbp->GetAmType());
tablep->SetTo_Tdb(tdbp);
tdbp->SetTable(tablep);
tdbp->SetMode(mode);
} // endif tdbp
return (tdbp);
} // end of GetTable
/***********************************************************************/
/* ClearDB: Terminates Database usage. */
/***********************************************************************/
void MYCAT::ClearDB(PGLOBAL)
{
} // end of ClearDB
/* ------------------------ End of MYCAT --------------------------- */
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