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mariadb/storage/connect/tabcmg.cpp
Vicențiu Ciorbaru df2675a9cc Merge connect/10.0 into 10.0 
This is a squashed merge.
2017-09-19 02:05:11 +03:00

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/************** tabcmg C++ Program Source Code File (.CPP) *************/
/* PROGRAM NAME: tabcmg Version 1.1 */
/* (C) Copyright to the author Olivier BERTRAND 2017 */
/* This program are the C MongoDB class DB execution routines. */
/***********************************************************************/
/***********************************************************************/
/* Include relevant sections of the MariaDB header file. */
/***********************************************************************/
#include <my_global.h>
/***********************************************************************/
/* Include application header files: */
/* global.h is header containing all global declarations. */
/* plgdbsem.h is header containing the DB application declarations. */
/* tdbdos.h is header containing the TDBDOS declarations. */
/* json.h is header containing the JSON classes declarations. */
/***********************************************************************/
#include "global.h"
#include "plgdbsem.h"
#include "xtable.h"
#include "maputil.h"
#include "filamtxt.h"
#include "tabext.h"
#include "tabcmg.h"
#include "tabmul.h"
#include "filter.h"
/* -------------------------- Class CMGDISC -------------------------- */
/***********************************************************************/
/* Get document. */
/***********************************************************************/
void CMGDISC::GetDoc(void)
{
doc = ((TDBCMG*)tmgp)->Cmgp->Document;
} // end of GetDoc
/***********************************************************************/
/* Analyse passed document. */
/***********************************************************************/
//bool CMGDISC::Find(PGLOBAL g, int i, int k, bool b)
bool CMGDISC::Find(PGLOBAL g)
{
return FindInDoc(g, &iter, doc, NULL, NULL, 0, false);
} // end of Find
/***********************************************************************/
/* Analyse passed document. */
/***********************************************************************/
bool CMGDISC::FindInDoc(PGLOBAL g, bson_iter_t *iter, const bson_t *doc,
char *pcn, char *pfmt, int k, bool b)
{
if (!doc || bson_iter_init(iter, doc)) {
const char *key;
char colname[65];
char fmt[129];
bool newcol;
while (bson_iter_next(iter)) {
key = bson_iter_key(iter);
newcol = true;
if (pcn) {
strncpy(colname, pcn, 64);
colname[64] = 0;
strncat(strncat(colname, "_", 65), key, 65);
} else
strcpy(colname, key);
if (pfmt) {
strncpy(fmt, pfmt, 128);
fmt[128] = 0;
strncat(strncat(fmt, ".", 129), key, 129);
} else
strcpy(fmt, key);
bcol.Cbn = false;
if (BSON_ITER_HOLDS_UTF8(iter)) {
bcol.Type = TYPE_STRING;
bcol.Len = strlen(bson_iter_utf8(iter, NULL));
} else if (BSON_ITER_HOLDS_INT32(iter)) {
bcol.Type = TYPE_INT;
bcol.Len = 11; // bson_iter_int32(iter)
} else if (BSON_ITER_HOLDS_INT64(iter)) {
bcol.Type = TYPE_BIGINT;
bcol.Len = 22; // bson_iter_int64(iter)
} else if (BSON_ITER_HOLDS_DOUBLE(iter)) {
bcol.Type = TYPE_DOUBLE;
bcol.Len = 12;
bcol.Scale = 6; // bson_iter_double(iter)
} else if (BSON_ITER_HOLDS_DATE_TIME(iter)) {
bcol.Type = TYPE_DATE;
bcol.Len = 19; // bson_iter_date_time(iter)
} else if (BSON_ITER_HOLDS_BOOL(iter)) {
bcol.Type = TYPE_TINY;
bcol.Len = 1;
} else if (BSON_ITER_HOLDS_OID(iter)) {
bcol.Type = TYPE_STRING;
bcol.Len = 24; // bson_iter_oid(iter)
} else if (BSON_ITER_HOLDS_DECIMAL128(iter)) {
bcol.Type = TYPE_DECIM;
bcol.Len = 32; // bson_iter_decimal128(iter, &dec)
} else if (BSON_ITER_HOLDS_DOCUMENT(iter)) {
if (lvl < 0)
continue;
else if (lvl <= k) {
bcol.Type = TYPE_STRING;
bcol.Len = 512;
} else {
bson_iter_t child;
if (bson_iter_recurse(iter, &child))
if (FindInDoc(g, &child, NULL, colname, fmt, k + 1, false))
return true;
newcol = false;
} // endif lvl
} else if (BSON_ITER_HOLDS_ARRAY(iter)) {
if (lvl < 0)
continue;
else if (lvl <= k) {
bcol.Type = TYPE_STRING;
bcol.Len = 512;
} else {
bson_t *arr;
bson_iter_t itar;
const uint8_t *data = NULL;
uint32_t len = 0;
bson_iter_array(iter, &len, &data);
arr = bson_new_from_data(data, len);
if (FindInDoc(g, &itar, arr, colname, fmt, k + 1, !all))
return true;
newcol = false;
} // endif lvl
} // endif's
if (newcol)
AddColumn(g, colname, fmt, k);
if (b)
break; // Test only first element of arrays
} // endwhile iter
} // endif doc
return false;
} // end of FindInDoc
/* --------------------------- Class TDBCMG -------------------------- */
/***********************************************************************/
/* Implementation of the TDBCMG class. */
/***********************************************************************/
TDBCMG::TDBCMG(MGODEF *tdp) : TDBEXT(tdp)
{
Cmgp = NULL;
Cnd = NULL;
Pcg.Tdbp = this;
if (tdp) {
Pcg.Uristr = tdp->Uri;
Pcg.Db_name = tdp->Tabschema;
Pcg.Coll_name = tdp->Tabname;
Pcg.Options = tdp->Colist;
Pcg.Filter = tdp->Filter;
Pcg.Pipe = tdp->Pipe && tdp->Colist != NULL;
B = tdp->Base ? 1 : 0;
} else {
Pcg.Uristr = NULL;
Pcg.Db_name = NULL;
Pcg.Coll_name = NULL;
Pcg.Options = NULL;
Pcg.Filter = NULL;
Pcg.Pipe = false;
B = 0;
} // endif tdp
Fpos = -1;
N = 0;
Done = false;
} // end of TDBCMG standard constructor
TDBCMG::TDBCMG(TDBCMG *tdbp) : TDBEXT(tdbp)
{
Cmgp = tdbp->Cmgp;
Cnd = tdbp->Cnd;
Pcg = tdbp->Pcg;
B = tdbp->B;
Fpos = tdbp->Fpos;
N = tdbp->N;
Done = tdbp->Done;
} // end of TDBCMG copy constructor
// Used for update
PTDB TDBCMG::Clone(PTABS t)
{
PTDB tp;
PMGOCOL cp1, cp2;
PGLOBAL g = t->G;
tp = new(g) TDBCMG(this);
for (cp1 = (PMGOCOL)Columns; cp1; cp1 = (PMGOCOL)cp1->GetNext())
if (!cp1->IsSpecial()) {
cp2 = new(g) MGOCOL(cp1, tp); // Make a copy
NewPointer(t, cp1, cp2);
} // endif cp1
return tp;
} // end of Clone
/***********************************************************************/
/* Allocate JSN column description block. */
/***********************************************************************/
PCOL TDBCMG::MakeCol(PGLOBAL g, PCOLDEF cdp, PCOL cprec, int n)
{
PMGOCOL colp = new(g) MGOCOL(g, cdp, this, cprec, n);
return colp;
} // end of MakeCol
/***********************************************************************/
/* InsertSpecialColumn: Put a special column ahead of the column list.*/
/***********************************************************************/
PCOL TDBCMG::InsertSpecialColumn(PCOL colp)
{
if (!colp->IsSpecial())
return NULL;
colp->SetNext(Columns);
Columns = colp;
return colp;
} // end of InsertSpecialColumn
/***********************************************************************/
/* Init: initialize MongoDB processing. */
/***********************************************************************/
bool TDBCMG::Init(PGLOBAL g)
{
if (Done)
return false;
/*********************************************************************/
/* Open an C connection for this table. */
/*********************************************************************/
if (!Cmgp)
Cmgp = new(g) CMgoConn(g, &Pcg);
else if (Cmgp->IsConnected())
Cmgp->Close();
if (Cmgp->Connect(g))
return true;
Done = true;
return false;
} // end of Init
/***********************************************************************/
/* MONGO Cardinality: returns table size in number of rows. */
/***********************************************************************/
int TDBCMG::Cardinality(PGLOBAL g)
{
if (!g)
return 1;
else if (Cardinal < 0)
Cardinal = (!Init(g)) ? Cmgp->CollSize(g) : 0;
return Cardinal;
} // end of Cardinality
/***********************************************************************/
/* MONGO GetMaxSize: returns collection size estimate. */
/***********************************************************************/
int TDBCMG::GetMaxSize(PGLOBAL g)
{
if (MaxSize < 0)
MaxSize = Cardinality(g);
return MaxSize;
} // end of GetMaxSize
/***********************************************************************/
/* OpenDB: Data Base open routine for MONGO access method. */
/***********************************************************************/
bool TDBCMG::OpenDB(PGLOBAL g)
{
if (Use == USE_OPEN) {
/*******************************************************************/
/* Table already open replace it at its beginning. */
/*******************************************************************/
Cmgp->Rewind();
Fpos = -1;
return false;
} // endif Use
/*********************************************************************/
/* First opening. */
/*********************************************************************/
if (Pcg.Pipe && Mode != MODE_READ) {
strcpy(g->Message, "Pipeline tables are read only");
return true;
} // endif Pipe
Use = USE_OPEN; // Do it now in case we are recursively called
if (Init(g))
return true;
if (Mode == MODE_DELETE && !Next)
// Delete all documents
return Cmgp->DocDelete(g);
else if (Mode == MODE_INSERT)
Cmgp->MakeColumnGroups(g);
return false;
} // end of OpenDB
/***********************************************************************/
/* Data Base indexed read routine for ODBC access method. */
/***********************************************************************/
bool TDBCMG::ReadKey(PGLOBAL g, OPVAL op, const key_range *kr)
{
strcpy(g->Message, "MONGO tables are not indexable");
return true;
} // end of ReadKey
/***********************************************************************/
/* ReadDB: Get next document from a collection. */
/***********************************************************************/
int TDBCMG::ReadDB(PGLOBAL g)
{
return Cmgp->ReadNext(g);
} // end of ReadDB
/***********************************************************************/
/* WriteDB: Data Base write routine for MGO access method. */
/***********************************************************************/
int TDBCMG::WriteDB(PGLOBAL g)
{
return Cmgp->Write(g);
} // end of WriteDB
/***********************************************************************/
/* Data Base delete line routine for MGO access method. */
/***********************************************************************/
int TDBCMG::DeleteDB(PGLOBAL g, int irc)
{
return (irc == RC_OK) ? WriteDB(g) : RC_OK;
} // end of DeleteDB
/***********************************************************************/
/* Table close routine for MONGO tables. */
/***********************************************************************/
void TDBCMG::CloseDB(PGLOBAL g)
{
Cmgp->Close();
Done = false;
} // end of CloseDB
/* ----------------------------- MGOCOL ------------------------------ */
/***********************************************************************/
/* MGOCOL public constructor. */
/***********************************************************************/
MGOCOL::MGOCOL(PGLOBAL g, PCOLDEF cdp, PTDB tdbp, PCOL cprec, int i)
: EXTCOL(cdp, tdbp, cprec, i, "MGO")
{
Tmgp = (PTDBCMG)(tdbp->GetOrig() ? tdbp->GetOrig() : tdbp);
Jpath = cdp->GetFmt() ? cdp->GetFmt() : cdp->GetName();
} // end of MGOCOL constructor
/***********************************************************************/
/* MGOCOL constructor used for copying columns. */
/* tdbp is the pointer to the new table descriptor. */
/***********************************************************************/
MGOCOL::MGOCOL(MGOCOL *col1, PTDB tdbp) : EXTCOL(col1, tdbp)
{
Tmgp = col1->Tmgp;
Jpath = col1->Jpath;
} // end of MGOCOL copy constructor
/***********************************************************************/
/* Get path when proj is false or projection path when proj is true. */
/***********************************************************************/
PSZ MGOCOL::GetJpath(PGLOBAL g, bool proj)
{
if (Jpath) {
if (proj) {
char *p1, *p2, *projpath = PlugDup(g, Jpath);
int i = 0;
for (p1 = p2 = projpath; *p1; p1++)
if (*p1 == '.') {
if (!i)
*p2++ = *p1;
i = 1;
} else if (i) {
if (!isdigit(*p1)) {
*p2++ = *p1;
i = 0;
} // endif p1
} else
*p2++ = *p1;
*p2 = 0;
return projpath;
} else
return Jpath;
} else
return Name;
} // end of GetJpath
/***********************************************************************/
/* ReadColumn: */
/***********************************************************************/
void MGOCOL::ReadColumn(PGLOBAL g)
{
Tmgp->Cmgp->GetColumnValue(g, this);
} // end of ReadColumn
/***********************************************************************/
/* WriteColumn: */
/***********************************************************************/
void MGOCOL::WriteColumn(PGLOBAL g)
{
// Check whether this node must be written
if (Value != To_Val)
Value->SetValue_pval(To_Val, FALSE); // Convert the updated value
} // end of WriteColumn
/* ---------------------------TDBGOL class --------------------------- */
/***********************************************************************/
/* TDBGOL class constructor. */
/***********************************************************************/
TDBGOL::TDBGOL(PMGODEF tdp) : TDBCAT(tdp)
{
Topt = tdp->GetTopt();
Uri = tdp->Uri;
Db = tdp->GetTabschema();
} // end of TDBJCL constructor
/***********************************************************************/
/* GetResult: Get the list the JSON file columns. */
/***********************************************************************/
PQRYRES TDBGOL::GetResult(PGLOBAL g)
{
return MGOColumns(g, Db, Uri, Topt, false);
} // end of GetResult
/* -------------------------- End of mongo --------------------------- */
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