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Overview
Comment:Add further tests for changebatch. And a fix to prevent a changeset from conflicting with itself.
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Timelines: family | ancestors | descendants | both | changebatch
Files: files | file ages | folders
SHA1: 506d6ff4b64c72d4ca65f0d15e1fdf8a132556bc
User & Date: dan 2016-08-23 19:02:21
Context
2016-08-24
19:14
Add the sqlite3changebatch_db() API. check-in: bee44ebc user: dan tags: changebatch
2016-08-23
19:02
Add further tests for changebatch. And a fix to prevent a changeset from conflicting with itself. check-in: 506d6ff4 user: dan tags: changebatch
18:09
Fix harmless compiler warnings in changebatch. check-in: a721a738 user: drh tags: changebatch
Changes
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Changes to ext/session/changebatch1.test. 

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if {![info exists testdir]} {
  set testdir [file join [file dirname [info script]] .. .. test]
} 
source $testdir/tester.tcl
ifcapable !session {finish_test; return}

set testprefix changebatch1


proc sql_to_changeset {method sql} {
  sqlite3session S db main
  S attach *
  execsql $sql
  set ret [S $method]
  S delete
................................................................................
  foreach a $args {
    lappend C [sql_to_changeset $method $a]
  }

  sqlite3changebatch cb db
  set i 1
  foreach ::cs [lrange $C 0 end-1] {
    do_test $tn.$i { cb add [set ::cs] } SQLITE_OK

    incr i
  }

  set ::cs [lindex $C end]
  do_test $tn.$i { cb add [set ::cs] } SQLITE_CONSTRAINT

  cb delete
}

proc do_changebatch_test1 {tn args} {
  uplevel do_changebatch_test $tn changeset $args
}
proc do_changebatch_test2 {tn args} {
................................................................................
  }
  
  #-------------------------------------------------------------------------
  #
  do_execsql_test $tn.2.0 {
    CREATE TABLE x1(a, b PRIMARY KEY, c UNIQUE);
    CREATE TABLE x2(a PRIMARY KEY, b UNIQUE, c UNIQUE);

  
    INSERT INTO x1 VALUES(1, 1, 'a');
    INSERT INTO x1 VALUES(1, 2, 'b');
    INSERT INTO x1 VALUES(1, 3, 'c');
  }
  
  $testfunction $tn.2.1 {
................................................................................
  }
  
  $testfunction $tn.2.2 {
    DELETE FROM x1 WHERE b=1;
  } {
    INSERT INTO x1 VALUES(1, 5, 'a');
  }















































}

#-------------------------------------------------------------------------
# Test some multi-column UNIQUE constraints. First Using _changeset() to
# demonstrate the problem, then using _fullchangeset() to show that it has
# been fixed.
#
................................................................................
  cb add $c1
  cb add $c2
} {SQLITE_CONSTRAINT}
do_test 3.1.2 {
  cb delete
} {}




















finish_test









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if {![info exists testdir]} {
  set testdir [file join [file dirname [info script]] .. .. test]
} 
source $testdir/tester.tcl
ifcapable !session {finish_test; return}

set testprefix changebatch1


proc sql_to_changeset {method sql} {
  sqlite3session S db main
  S attach *
  execsql $sql
  set ret [S $method]
  S delete
................................................................................
  foreach a $args {
    lappend C [sql_to_changeset $method $a]
  }

  sqlite3changebatch cb db
  set i 1
  foreach ::cs [lrange $C 0 end-1] {
    set rc [cb add $::cs]
    if {$rc!="SQLITE_OK"} { error "expected SQLITE_OK, got $rc (i=$i)" }
    incr i
  }

  set ::cs [lindex $C end]
  do_test $tn { cb add [set ::cs] } SQLITE_CONSTRAINT

  cb delete
}

proc do_changebatch_test1 {tn args} {
  uplevel do_changebatch_test $tn changeset $args
}
proc do_changebatch_test2 {tn args} {
................................................................................
  }
  
  #-------------------------------------------------------------------------
  #
  do_execsql_test $tn.2.0 {
    CREATE TABLE x1(a, b PRIMARY KEY, c UNIQUE);
    CREATE TABLE x2(a PRIMARY KEY, b UNIQUE, c UNIQUE);
    CREATE INDEX x1a ON x1(a);
  
    INSERT INTO x1 VALUES(1, 1, 'a');
    INSERT INTO x1 VALUES(1, 2, 'b');
    INSERT INTO x1 VALUES(1, 3, 'c');
  }
  
  $testfunction $tn.2.1 {
................................................................................
  }
  
  $testfunction $tn.2.2 {
    DELETE FROM x1 WHERE b=1;
  } {
    INSERT INTO x1 VALUES(1, 5, 'a');
  }

  set L [list]
  for {set i 1000} {$i < 10000} {incr i} {
    lappend L "INSERT INTO x2 VALUES($i, $i, 'x' || $i)"
  }
  lappend L "DELETE FROM x2 WHERE b=1005"
  $testfunction $tn.2.3 {*}$L

  execsql { INSERT INTO x1 VALUES('f', 'f', 'f') }
  $testfunction $tn.2.4 {
    INSERT INTO x2 VALUES('f', 'f', 'f');
  } {
    INSERT INTO x1 VALUES('g', 'g', 'g');
  } {
    DELETE FROM x1 WHERE b='f';
  } {
    INSERT INTO x2 VALUES('g', 'g', 'g');
  } {
    INSERT INTO x1 VALUES('f', 'f', 'f');
  }

  execsql {
    DELETE FROM x1;
    INSERT INTO x1 VALUES(1.5, 1.5, 1.5);
  }
  $testfunction $tn.2.5 {
    DELETE FROM x1 WHERE b BETWEEN 1 AND 2;
  } {
    INSERT INTO x1 VALUES(2.5, 2.5, 2.5);
  } {
    INSERT INTO x1 VALUES(1.5, 1.5, 1.5);
  }

  execsql {
    DELETE FROM x2;
    INSERT INTO x2 VALUES(X'abcd', X'1234', X'7890');
    INSERT INTO x2 VALUES(X'0000', X'0000', X'0000');
  }
  breakpoint
  $testfunction $tn.2.6 {
    UPDATE x2 SET c = X'1234' WHERE a=X'abcd';
    INSERT INTO x2 VALUES(X'1234', X'abcd', X'7890');
  } {
    DELETE FROM x2 WHERE b=X'0000';
  } {
    INSERT INTO x2 VALUES(1, X'0000', NULL);
  }
}

#-------------------------------------------------------------------------
# Test some multi-column UNIQUE constraints. First Using _changeset() to
# demonstrate the problem, then using _fullchangeset() to show that it has
# been fixed.
#
................................................................................
  cb add $c1
  cb add $c2
} {SQLITE_CONSTRAINT}
do_test 3.1.2 {
  cb delete
} {}

#-------------------------------------------------------------------------
#
reset_db
do_execsql_test 4.0 {
  CREATE TABLE t1(x, y, z, PRIMARY KEY(x, y), UNIQUE(z));
}

do_test 4.1 {
  set c1 [sql_to_changeset fullchangeset { INSERT INTO t1 VALUES(1, 2, 3) }]
  execsql {
    DROP TABLE t1;
    CREATE TABLE t1(w, x, y, z, PRIMARY KEY(x, y), UNIQUE(z));
  }
  sqlite3changebatch cb db
  list [catch { cb add $c1 } msg] $msg
} {1 SQLITE_RANGE}



finish_test

Added ext/session/changebatchfault.test. 























































































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# 2011 Mar 21
#
# The author disclaims copyright to this source code.  In place of
# a legal notice, here is a blessing:
#
#    May you do good and not evil.
#    May you find forgiveness for yourself and forgive others.
#    May you share freely, never taking more than you give.
#
#***********************************************************************
#
# The focus of this file is testing the session module.
#

if {![info exists testdir]} {
  set testdir [file join [file dirname [info script]] .. .. test]
} 
source [file join [file dirname [info script]] session_common.tcl]
source $testdir/tester.tcl
ifcapable !session {finish_test; return}
set testprefix changebatchfault

do_execsql_test 1.0 {
  CREATE TABLE t1(a, b, c PRIMARY KEY, UNIQUE(a, b));
  INSERT INTO t1 VALUES('a', 'a', 'a');
  INSERT INTO t1 VALUES('b', 'b', 'b');
}

set ::c1 [changeset_from_sql { delete from t1 where c='a' }]
set ::c2 [changeset_from_sql { insert into t1 values('c', 'c', 'c') }]

do_faultsim_test 1 -faults oom-* -body {
  sqlite3changebatch cb db
  cb add $::c1
  cb add $::c2
} -test {
  faultsim_test_result {0 SQLITE_OK} {1 SQLITE_NOMEM}
  catch { cb delete }
}


finish_test

Changes to ext/session/sqlite3changebatch.c. 

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    rc = sqlite3_prepare_v2(p->db, zIndexInfo, -1, &pIndexInfo, 0);
    sqlite3_free(zIndexInfo);
  }else{
    rc = SQLITE_NOMEM;
  }

  if( rc==SQLITE_OK ){
    int rc2;
    while( SQLITE_ROW==sqlite3_step(pIndexInfo) ){ nCol++; }
    rc2 = sqlite3_reset(pIndexInfo);
    if( rc==SQLITE_OK ) rc = rc2;
  }

  pNew = (BatchIndex*)cbMalloc(&rc, sizeof(BatchIndex) + sizeof(int) * nCol);
  if( rc==SQLITE_OK ){
    int rc2;
    pNew->nCol = nCol;
    pNew->bPk = bPk;
................................................................................
    pNew->aiCol = (int*)&pNew[1];
    pNew->iId = p->iNextIdxId++;
    while( SQLITE_ROW==sqlite3_step(pIndexInfo) ){ 
      int i = sqlite3_column_int(pIndexInfo, 0);
      int j = sqlite3_column_int(pIndexInfo, 1);
      pNew->aiCol[i] = j;
    }
    rc2 = sqlite3_reset(pIndexInfo);
    if( rc==SQLITE_OK ) rc = rc2;
  }

  if( rc==SQLITE_OK ){
    pNew->pNext = pTab->pIdx;
    pTab->pIdx = pNew;
  }else{
    cbFree(pNew);
  }
  sqlite3_finalize(pIndexInfo);

  return rc;
}














/*
** Find or create the BatchTable object named zTab.
*/
static int cbFindTable(
  sqlite3_changebatch *p, 
  const char *zTab, 
................................................................................
      }
      rc2 = sqlite3_finalize(pIndexList);
      if( rc==SQLITE_OK ) rc = rc2;

      if( rc==SQLITE_OK ){
        pRet->pNext = p->pTab;
        p->pTab = pRet;



      }
    }
  }

  *ppTab = pRet;
  return rc;
}











static int cbGetChangesetValue(
  sqlite3_changeset_iter *pIter, 
  int (*xVal)(sqlite3_changeset_iter*,int,sqlite3_value**),
  int (*xFallback)(sqlite3_changeset_iter*,int,sqlite3_value**),
  int iVal,
  sqlite3_value **ppVal
){
................................................................................

  pNew = cbMalloc(&rc, sizeof(BatchIndexEntry) + sz);
  if( pNew ){
    pNew->iChangesetId = p->iChangesetId;
    pNew->iIdxId = pIdx->iId;
    pNew->szRecord = sz;

    for(i=0; rc==SQLITE_OK && i<pIdx->nCol; i++){

      sqlite3_value *pVal;
      rc = cbGetChangesetValue(pIter, xVal, xFallback, pIdx->aiCol[i], &pVal);
      if( rc==SQLITE_OK ){

        int eType = sqlite3_value_type(pVal);
        pNew->aRecord[iOut++] = eType;
        switch( eType ){
          case SQLITE_INTEGER: {
            sqlite3_int64 i64 = sqlite3_value_int64(pVal);
            memcpy(&pNew->aRecord[iOut], &i64, 8);
            iOut += 8;
            break;
          }
          case SQLITE_FLOAT: {
            double d64 = sqlite3_value_double(pVal);
            memcpy(&pNew->aRecord[iOut], &d64, sizeof(double));
            iOut += sizeof(double);
            break;
          }

          default: {
            int nByte = sqlite3_value_bytes(pVal);
            const char *z = (const char*)sqlite3_value_blob(pVal);
            memcpy(&pNew->aRecord[iOut], z, nByte);
            iOut += nByte;
            break;
          }
        }
      }
    }
  }

  if( rc==SQLITE_OK && p->nEntry>=(p->nHash/2) ){
    rc = cbHashResize(p);
................................................................................
    }

    if( pNew ){
      pNew->pNext = p->apHash[iHash];
      p->apHash[iHash] = pNew;
      p->nEntry++;
    }


  }

  p->iChangesetId++;
  return rc;
}


/*
** Add a changeset to the current batch.
*/
................................................................................
      int nCol;                   /* Number of columns in table */
      int op;                     /* UPDATE, INSERT or DELETE */

      sqlite3changeset_op(pIter, &zTab, &nCol, &op, 0);
      assert( op==SQLITE_INSERT || op==SQLITE_UPDATE || op==SQLITE_DELETE );

      rc = cbFindTable(p, zTab, &pTab);


      for(pIdx=pTab->pIdx; pIdx && rc==SQLITE_OK; pIdx=pIdx->pNext){
        if( op==SQLITE_UPDATE && pIdx->bPk ) continue;
        if( op==SQLITE_UPDATE || op==SQLITE_DELETE ){
          rc = cbAddToHash(p, pIter, pIdx, sqlite3changeset_old, 0, &bConf);
        }
        if( op==SQLITE_UPDATE || op==SQLITE_INSERT ){
          rc = cbAddToHash(p, pIter, pIdx, 
              sqlite3changeset_new, sqlite3changeset_old, &bConf
          );

        }
      }
      if( rc!=SQLITE_OK ) break;
    }

    rc2 = sqlite3changeset_finalize(pIter);
    if( rc==SQLITE_OK ) rc = rc2;
  }

  if( rc==SQLITE_OK && bConf ){
    rc = SQLITE_CONSTRAINT;
  }

  return rc;
}

/*
** Zero an existing changebatch object.
*/
void sqlite3changebatch_zero(sqlite3_changebatch *p){
................................................................................
*/
void sqlite3changebatch_delete(sqlite3_changebatch *p){
  BatchTable *pTab;
  BatchTable *pTabNext;

  sqlite3changebatch_zero(p);
  for(pTab=p->pTab; pTab; pTab=pTabNext){
    BatchIndex *pIdx;
    BatchIndex *pIdxNext;
    for(pIdx=pTab->pIdx; pIdx; pIdx=pIdxNext){
      pIdxNext = pIdx->pNext;
      cbFree(pIdx);
    }
    pTabNext = pTab->pNext;
    cbFree(pTab);
  }
  cbFree(p);
}

#endif /* SQLITE_ENABLE_SESSION && SQLITE_ENABLE_PREUPDATE_HOOK */








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    rc = sqlite3_prepare_v2(p->db, zIndexInfo, -1, &pIndexInfo, 0);
    sqlite3_free(zIndexInfo);
  }else{
    rc = SQLITE_NOMEM;
  }

  if( rc==SQLITE_OK ){

    while( SQLITE_ROW==sqlite3_step(pIndexInfo) ){ nCol++; }
    rc = sqlite3_reset(pIndexInfo);

  }

  pNew = (BatchIndex*)cbMalloc(&rc, sizeof(BatchIndex) + sizeof(int) * nCol);
  if( rc==SQLITE_OK ){
    int rc2;
    pNew->nCol = nCol;
    pNew->bPk = bPk;
................................................................................
    pNew->aiCol = (int*)&pNew[1];
    pNew->iId = p->iNextIdxId++;
    while( SQLITE_ROW==sqlite3_step(pIndexInfo) ){ 
      int i = sqlite3_column_int(pIndexInfo, 0);
      int j = sqlite3_column_int(pIndexInfo, 1);
      pNew->aiCol[i] = j;
    }
    rc = sqlite3_reset(pIndexInfo);

  }

  if( rc==SQLITE_OK ){
    pNew->pNext = pTab->pIdx;
    pTab->pIdx = pNew;
  }else{
    cbFree(pNew);
  }
  sqlite3_finalize(pIndexInfo);

  return rc;
}

/*
** Free the object passed as the first argument.
*/
static void cbFreeTable(BatchTable *pTab){
  BatchIndex *pIdx;
  BatchIndex *pIdxNext;
  for(pIdx=pTab->pIdx; pIdx; pIdx=pIdxNext){
    pIdxNext = pIdx->pNext;
    cbFree(pIdx);
  }
  cbFree(pTab);
}

/*
** Find or create the BatchTable object named zTab.
*/
static int cbFindTable(
  sqlite3_changebatch *p, 
  const char *zTab, 
................................................................................
      }
      rc2 = sqlite3_finalize(pIndexList);
      if( rc==SQLITE_OK ) rc = rc2;

      if( rc==SQLITE_OK ){
        pRet->pNext = p->pTab;
        p->pTab = pRet;
      }else{
        cbFreeTable(pRet);
        pRet = 0;
      }
    }
  }

  *ppTab = pRet;
  return rc;
}

/*
** Extract value iVal from the changeset iterator passed as the first
** argument. Set *ppVal to point to the value before returning.
**
** This function attempts to extract the value using function xVal
** (which is always either sqlite3changeset_new or sqlite3changeset_old).
** If the call returns SQLITE_OK but does not supply an sqlite3_value*
** pointer, an attempt to extract the value is made using the xFallback 
** function.
*/
static int cbGetChangesetValue(
  sqlite3_changeset_iter *pIter, 
  int (*xVal)(sqlite3_changeset_iter*,int,sqlite3_value**),
  int (*xFallback)(sqlite3_changeset_iter*,int,sqlite3_value**),
  int iVal,
  sqlite3_value **ppVal
){
................................................................................

  pNew = cbMalloc(&rc, sizeof(BatchIndexEntry) + sz);
  if( pNew ){
    pNew->iChangesetId = p->iChangesetId;
    pNew->iIdxId = pIdx->iId;
    pNew->szRecord = sz;

    for(i=0; i<pIdx->nCol; i++){
      int eType;
      sqlite3_value *pVal;
      rc = cbGetChangesetValue(pIter, xVal, xFallback, pIdx->aiCol[i], &pVal);

      if( rc!=SQLITE_OK ) break;  /* coverage: condition is never true */
      eType = sqlite3_value_type(pVal);
      pNew->aRecord[iOut++] = eType;
      switch( eType ){
        case SQLITE_INTEGER: {
          sqlite3_int64 i64 = sqlite3_value_int64(pVal);
          memcpy(&pNew->aRecord[iOut], &i64, 8);
          iOut += 8;
          break;
        }
        case SQLITE_FLOAT: {
          double d64 = sqlite3_value_double(pVal);
          memcpy(&pNew->aRecord[iOut], &d64, sizeof(double));
          iOut += sizeof(double);
          break;
        }

        default: {
          int nByte = sqlite3_value_bytes(pVal);
          const char *z = (const char*)sqlite3_value_blob(pVal);
          memcpy(&pNew->aRecord[iOut], z, nByte);
          iOut += nByte;
          break;

        }
      }
    }
  }

  if( rc==SQLITE_OK && p->nEntry>=(p->nHash/2) ){
    rc = cbHashResize(p);
................................................................................
    }

    if( pNew ){
      pNew->pNext = p->apHash[iHash];
      p->apHash[iHash] = pNew;
      p->nEntry++;
    }
  }else{
    cbFree(pNew);
  }


  return rc;
}


/*
** Add a changeset to the current batch.
*/
................................................................................
      int nCol;                   /* Number of columns in table */
      int op;                     /* UPDATE, INSERT or DELETE */

      sqlite3changeset_op(pIter, &zTab, &nCol, &op, 0);
      assert( op==SQLITE_INSERT || op==SQLITE_UPDATE || op==SQLITE_DELETE );

      rc = cbFindTable(p, zTab, &pTab);
      assert( pTab || rc!=SQLITE_OK );
      if( pTab ){
        for(pIdx=pTab->pIdx; pIdx && rc==SQLITE_OK; pIdx=pIdx->pNext){
          if( op==SQLITE_UPDATE && pIdx->bPk ) continue;
          if( op==SQLITE_UPDATE || op==SQLITE_DELETE ){
            rc = cbAddToHash(p, pIter, pIdx, sqlite3changeset_old, 0, &bConf);
          }
          if( op==SQLITE_UPDATE || op==SQLITE_INSERT ){
            rc = cbAddToHash(p, pIter, pIdx, 
                sqlite3changeset_new, sqlite3changeset_old, &bConf
            );
          }
        }
      }
      if( rc!=SQLITE_OK ) break;
    }

    rc2 = sqlite3changeset_finalize(pIter);
    if( rc==SQLITE_OK ) rc = rc2;
  }

  if( rc==SQLITE_OK && bConf ){
    rc = SQLITE_CONSTRAINT;
  }
  p->iChangesetId++;
  return rc;
}

/*
** Zero an existing changebatch object.
*/
void sqlite3changebatch_zero(sqlite3_changebatch *p){
................................................................................
*/
void sqlite3changebatch_delete(sqlite3_changebatch *p){
  BatchTable *pTab;
  BatchTable *pTabNext;

  sqlite3changebatch_zero(p);
  for(pTab=p->pTab; pTab; pTab=pTabNext){






    pTabNext = pTab->pNext;
    cbFreeTable(pTab);
  }
  cbFree(p);
}

#endif /* SQLITE_ENABLE_SESSION && SQLITE_ENABLE_PREUPDATE_HOOK */

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