From: drh <drh@noemail.net>
Date: Tue, 24 Feb 2004 01:05:31 +0000 (+0000)
Subject: Refactor parts of write operations. (CVS 1268)
X-Git-Tag: version-3.6.10~4800
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=cd44690ad042e6bb5c2331ffad5eb77373928d88;p=thirdparty%2Fsqlite.git

Refactor parts of write operations. (CVS 1268)

FossilOrigin-Name: 5b0147aece7785373e6f7439c32e5f58c6b12562
---

diff --git a/manifest b/manifest
index d983fd1194..f1447eccd1 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Make\ssure\sBEGIN,\sCOMMIT,\sand\sROLLBACK\sare\sreally\sno-ops\swhen\spreceded\nby\sEXPLAIN.\s\sTicket\s#626.\s(CVS\s1267)
-D 2004-02-24T01:04:12
+C Refactor\sparts\sof\swrite\soperations.\s(CVS\s1268)
+D 2004-02-24T01:05:32
 F Makefile.in cfd75c46b335881999333a9e4b982fa8491f200b
 F Makefile.linux-gcc b86a99c493a5bfb402d1d9178dcdc4bd4b32f906
 F README f1de682fbbd94899d50aca13d387d1b3fd3be2dd
@@ -28,15 +28,15 @@ F src/btree.c 0a40efb01fa3a431a16d8604f603431d8c9cebfa
 F src/btree.h 41cb3ff6ebc3f6da2d0a074e39ff8c7a2287469f
 F src/btree_rb.c 32b2cb4285c0fbd53b89de021637b63d52257e54
 F src/build.c c8ab8b467d9a64254b0d4d42083f6313b3a980d1
-F src/copy.c 391ce142f6b1faa093867ecee134f61a5028a9af
+F src/copy.c e4dc49e7e1661818c72852e348d0cb0ef2b42bc1
 F src/date.c 3025642cee50d5c41aef4a22cbc41aa7e543c922
-F src/delete.c 8e2ff752bf485906effcc64f267cdd7227463567
+F src/delete.c 82001c74882319f94dab5f6b92a27311b31092ae
 F src/encode.c 9e70ea1e4e746f23f18180949e94f1bb1c2220d3
 F src/expr.c 61b71ce2e93b0faca39db9e9c06e9a089d25a04f
 F src/func.c a2265f29e6a286203c9dfeb835d9a50439617805
 F src/hash.c 9b56ef3b291e25168f630d5643a4264ec011c70e
 F src/hash.h 3247573ab95b9dd90bcca0307a75d9a16da1ccc7
-F src/insert.c c59f59fb461ad7f8939df289915669c04632edba
+F src/insert.c c0485ee2d1b99322894e2d1e0b576fd05ed75616
 F src/main.c 0f77633b37540fabd45e68c5137f32f4cd99470a
 F src/md5.c fe4f9c9c6f71dfc26af8da63e4d04489b1430565
 F src/os.c f5fc4954725b2fcd852979f2746085fe8ca27710
@@ -50,7 +50,7 @@ F src/random.c 775913e0b7fbd6295d21f12a7bd35b46387c44b2
 F src/select.c 902000034e44817e2822d72870c15eff842dea9e
 F src/shell.c c3d3404fa82bb0808444fda9884d1bb572fd18b9
 F src/sqlite.h.in 64f016cd5ce190643a0f47760188fdf4e0b2227e
-F src/sqliteInt.h a3e8f422803abf1e6ba07e15ffe5070a50f8b5e5
+F src/sqliteInt.h 1ef4dcb7a5525c91e3d338f9435c84930c11aeb2
 F src/table.c d845cb101b5afc1f7fea083c99e3d2fa7998d895
 F src/tclsqlite.c b84dafe3a8532ff534c36e96bd38880e4b9cedf3
 F src/test1.c 9aa62b89d420e6763b5e7ae89a47f6cf87370477
@@ -189,7 +189,7 @@ F www/sqlite.tcl 3c83b08cf9f18aa2d69453ff441a36c40e431604
 F www/tclsqlite.tcl b9271d44dcf147a93c98f8ecf28c927307abd6da
 F www/vdbe.tcl 9b9095d4495f37697fd1935d10e14c6015e80aa1
 F www/whentouse.tcl a8335bce47cc2fddb07f19052cb0cb4d9129a8e4
-P 51f1e8f7539596b33bc3365ec8f34041602d049c
-R 5adf6f47c8ab67ce4590cb7b8bc7a924
+P 2af1f065b5eb39fd3ecac00f8a66d1b4186aead5
+R 9d6a8b25a7f2bb71f6dedeed9e4c62a7
 U drh
-Z 2a45a4df86052317dd80d2310a220210
+Z 8a2415f48418d0f788b383a0bebad05c
diff --git a/manifest.uuid b/manifest.uuid
index d17387217e..df74321908 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-2af1f065b5eb39fd3ecac00f8a66d1b4186aead5
\ No newline at end of file
+5b0147aece7785373e6f7439c32e5f58c6b12562
\ No newline at end of file
diff --git a/src/copy.c b/src/copy.c
index 579a786f4a..140e6a9f84 100644
--- a/src/copy.c
+++ b/src/copy.c
@@ -11,7 +11,7 @@
 *************************************************************************
 ** This file contains code used to implement the COPY command.
 **
-** $Id: copy.c,v 1.7 2004/02/16 03:44:02 drh Exp $
+** $Id: copy.c,v 1.8 2004/02/24 01:05:32 drh Exp $
 */
 #include "sqliteInt.h"
 
@@ -58,18 +58,9 @@ void sqliteCopy(
   v = sqliteGetVdbe(pParse);
   if( v ){
     sqliteBeginWriteOperation(pParse, 1, pTab->iDb);
-    addr = sqliteVdbeAddOp(v, OP_FileOpen, 0, 0);
-    sqliteVdbeChangeP3(v, addr, pFilename->z, pFilename->n);
+    addr = sqliteVdbeOp3(v, OP_FileOpen, 0, 0, pFilename->z, pFilename->n);
     sqliteVdbeDequoteP3(v, addr);
-    sqliteVdbeAddOp(v, OP_Integer, pTab->iDb, 0);
-    sqliteVdbeAddOp(v, OP_OpenWrite, 0, pTab->tnum);
-    sqliteVdbeChangeP3(v, -1, pTab->zName, P3_STATIC);
-    for(i=1, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){
-      assert( pIdx->iDb==1 || pIdx->iDb==pTab->iDb );
-      sqliteVdbeAddOp(v, OP_Integer, pIdx->iDb, 0);
-      sqliteVdbeAddOp(v, OP_OpenWrite, i, pIdx->tnum);
-      sqliteVdbeChangeP3(v, -1, pIdx->zName, P3_STATIC);
-    }
+    sqliteOpenTableAndIndices(pParse, pTab, 0);
     if( db->flags & SQLITE_CountRows ){
       sqliteVdbeAddOp(v, OP_Integer, 0, 0);  /* Initialize the row count */
     }
diff --git a/src/delete.c b/src/delete.c
index 4a065f30a8..381e3de318 100644
--- a/src/delete.c
+++ b/src/delete.c
@@ -12,7 +12,7 @@
 ** This file contains C code routines that are called by the parser
 ** to handle DELETE FROM statements.
 **
-** $Id: delete.c,v 1.60 2004/02/20 22:53:39 rdc Exp $
+** $Id: delete.c,v 1.61 2004/02/24 01:05:32 drh Exp $
 */
 #include "sqliteInt.h"
 
@@ -253,12 +253,7 @@ void sqliteDeleteFrom(
       ** cursors are opened only once on the outside the loop.
       */
       pParse->nTab = iCur + 1;
-      sqliteVdbeAddOp(v, OP_Integer, pTab->iDb, 0);
-      sqliteVdbeAddOp(v, OP_OpenWrite, iCur, pTab->tnum);
-      for(i=1, pIdx=pTab->pIndex; pIdx; i++, pIdx=pIdx->pNext){
-        sqliteVdbeAddOp(v, OP_Integer, pIdx->iDb, 0);
-        sqliteVdbeAddOp(v, OP_OpenWrite, pParse->nTab++, pIdx->tnum);
-      }
+      sqliteOpenTableAndIndices(pParse, pTab, iCur);
 
       /* This is the beginning of the delete loop when there are no
       ** row triggers */
diff --git a/src/insert.c b/src/insert.c
index 9f3a747efb..64e18ba05a 100644
--- a/src/insert.c
+++ b/src/insert.c
@@ -12,7 +12,7 @@
 ** This file contains C code routines that are called by the parser
 ** to handle INSERT statements in SQLite.
 **
-** $Id: insert.c,v 1.93 2004/02/22 20:05:01 drh Exp $
+** $Id: insert.c,v 1.94 2004/02/24 01:05:33 drh Exp $
 */
 #include "sqliteInt.h"
 
@@ -330,13 +330,7 @@ void sqliteInsert(
   /* Open tables and indices if there are no row triggers */
   if( !row_triggers_exist ){
     base = pParse->nTab;
-    sqliteVdbeAddOp(v, OP_Integer, pTab->iDb, 0);
-    sqliteVdbeOp3(v, OP_OpenWrite, base, pTab->tnum, pTab->zName, P3_STATIC);
-    for(idx=1, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, idx++){
-      sqliteVdbeAddOp(v, OP_Integer, pIdx->iDb, 0);
-      sqliteVdbeOp3(v, OP_OpenWrite, idx+base, pIdx->tnum,
-                       pIdx->zName, P3_STATIC);
-    }
+    idx = sqliteOpenTableAndIndices(pParse, pTab, base);
     pParse->nTab += idx;
   }
 
@@ -414,13 +408,7 @@ void sqliteInsert(
   */
   if( row_triggers_exist && !isView ){
     base = pParse->nTab;
-    sqliteVdbeAddOp(v, OP_Integer, pTab->iDb, 0);
-    sqliteVdbeOp3(v, OP_OpenWrite, base, pTab->tnum, pTab->zName, P3_STATIC);
-    for(idx=1, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, idx++){
-      sqliteVdbeAddOp(v, OP_Integer, pIdx->iDb, 0);
-      sqliteVdbeOp3(v, OP_OpenWrite, idx+base, pIdx->tnum,
-                       pIdx->zName, P3_STATIC);
-    }
+    idx = sqliteOpenTableAndIndices(pParse, pTab, base);
     pParse->nTab += idx;
   }
 
@@ -907,3 +895,25 @@ void sqliteCompleteInsertion(
     sqliteVdbeAddOp(v, OP_Pop, 1, 0);
   }
 }
+
+/*
+** Generate code that will open write cursors for a table and for all
+** indices of that table.  The "base" parameter is the cursor number used
+** for the table.  Indices are opened on subsequent cursors.
+**
+** Return the total number of cursors opened.  This is always at least
+** 1 (for the main table) plus more for each cursor.
+*/
+int sqliteOpenTableAndIndices(Parse *pParse, Table *pTab, int base){
+  int i;
+  Index *pIdx;
+  Vdbe *v = sqliteGetVdbe(pParse);
+  assert( v!=0 );
+  sqliteVdbeAddOp(v, OP_Integer, pTab->iDb, 0);
+  sqliteVdbeOp3(v, OP_OpenWrite, base, pTab->tnum, pTab->zName, P3_STATIC);
+  for(i=1, pIdx=pTab->pIndex; pIdx; pIdx=pIdx->pNext, i++){
+    sqliteVdbeAddOp(v, OP_Integer, pIdx->iDb, 0);
+    sqliteVdbeOp3(v, OP_OpenWrite, i+base, pIdx->tnum, pIdx->zName, P3_STATIC);
+  }
+  return i;
+}
diff --git a/src/sqliteInt.h b/src/sqliteInt.h
index a265e78c86..60d4bc5471 100644
--- a/src/sqliteInt.h
+++ b/src/sqliteInt.h
@@ -11,7 +11,7 @@
 *************************************************************************
 ** Internal interface definitions for SQLite.
 **
-** @(#) $Id: sqliteInt.h,v 1.218 2004/02/22 17:49:34 drh Exp $
+** @(#) $Id: sqliteInt.h,v 1.219 2004/02/24 01:05:33 drh Exp $
 */
 #include "config.h"
 #include "sqlite.h"
@@ -1204,6 +1204,7 @@ void sqliteGenerateRowDelete(sqlite*, Vdbe*, Table*, int, int);
 void sqliteGenerateRowIndexDelete(sqlite*, Vdbe*, Table*, int, char*);
 void sqliteGenerateConstraintChecks(Parse*,Table*,int,char*,int,int,int,int);
 void sqliteCompleteInsertion(Parse*, Table*, int, char*, int, int, int);
+int sqliteOpenTableAndIndices(Parse*, Table*, int);
 void sqliteBeginWriteOperation(Parse*, int, int);
 void sqliteEndWriteOperation(Parse*);
 Expr *sqliteExprDup(Expr*);