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Experimental change to include changes made to the sqlite_stat1 table in

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changesets generated by the sessions module. sqlite_stat1 entries in such
changesets are ignored by legacy clients.

FossilOrigin-Name: bd46c4429693545eb16db85692fc591ac529796aa746f5f21df1ce4380619320
This commit is contained in:
dan
2018-01-12 16:44:29 +00:00
parent f225059b8b
commit 614efe2b4b
10 changed files with 231 additions and 16 deletions
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22
src/analyze.c
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@@ -234,6 +234,10 @@ static void openStatTable(
"DELETE FROM %Q.%s WHERE %s=%Q",
pDb->zDbSName, zTab, zWhereType, zWhere
);
#ifdef SQLITE_ENABLE_PREUPDATE_HOOK
}else if( db->xPreUpdateCallback ){
sqlite3NestedParse(pParse, "DELETE FROM %Q.%s", pDb->zDbSName, zTab);
#endif
}else{
/* The sqlite_stat[134] table already exists. Delete all rows. */
sqlite3VdbeAddOp2(v, OP_Clear, aRoot[i], iDb);
@@ -998,6 +1002,9 @@ static void analyzeOneTable(
int regIdxname = iMem++; /* Register containing index name */
int regStat1 = iMem++; /* Value for the stat column of sqlite_stat1 */
int regPrev = iMem; /* MUST BE LAST (see below) */
#ifdef SQLITE_ENABLE_PREUPDATE_HOOK
Table *pStat1 = 0;
#endif
pParse->nMem = MAX(pParse->nMem, iMem);
v = sqlite3GetVdbe(pParse);
@@ -1023,6 +1030,18 @@ static void analyzeOneTable(
}
#endif
#ifdef SQLITE_ENABLE_PREUPDATE_HOOK
if( db->xPreUpdateCallback ){
pStat1 = (Table*)sqlite3DbMallocZero(db, sizeof(Table) + 13);
if( pStat1==0 ) return;
pStat1->zName = (char*)&pStat1[1];
memcpy(pStat1->zName, "sqlite_stat1", 13);
pStat1->nCol = 3;
pStat1->iPKey = -1;
sqlite3VdbeAddOp4(pParse->pVdbe, OP_Noop, 0, 0, 0,(char*)pStat1,P4_DYNBLOB);
}
#endif
/* Establish a read-lock on the table at the shared-cache level.
** Open a read-only cursor on the table. Also allocate a cursor number
** to use for scanning indexes (iIdxCur). No index cursor is opened at
@@ -1224,6 +1243,9 @@ static void analyzeOneTable(
sqlite3VdbeAddOp4(v, OP_MakeRecord, regTabname, 3, regTemp, "BBB", 0);
sqlite3VdbeAddOp2(v, OP_NewRowid, iStatCur, regNewRowid);
sqlite3VdbeAddOp3(v, OP_Insert, iStatCur, regTemp, regNewRowid);
#ifdef SQLITE_ENABLE_PREUPDATE_HOOK
sqlite3VdbeChangeP4(v, -1, (char*)pStat1, P4_TABLE);
#endif
sqlite3VdbeChangeP5(v, OPFLAG_APPEND);
/* Add the entries to the stat3 or stat4 table. */