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Added support for the INTEGER PRIMARY KEY column type. (CVS 333)

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FossilOrigin-Name: 236a54d289e858a1e0505a20d907a2a40c01b521
This commit is contained in:
drh
2001-12-21 14:30:42 +00:00
parent 7c917d196f
commit 4a32431ce7
14 changed files with 432 additions and 112 deletions
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59
src/vdbe.c
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@@ -30,7 +30,7 @@
** But other routines are also provided to help in building up
** a program instruction by instruction.
**
** $Id: vdbe.c,v 1.100 2001/11/13 19:35:15 drh Exp $
** $Id: vdbe.c,v 1.101 2001/12/21 14:30:43 drh Exp $
*/
#include "sqliteInt.h"
#include <ctype.h>
@@ -1654,7 +1654,10 @@ case OP_ShiftRight: {
/* Opcode: AddImm P1 * *
**
** Add the value P1 to whatever is on top of the stack.
** Add the value P1 to whatever is on top of the stack. The result
** is always an integer.
**
** To force the top of the stack to be an integer, just add 0.
*/
case OP_AddImm: {
int tos = p->tos;
@@ -2269,15 +2272,20 @@ case OP_Rollback: {
break;
}
/* Opcode: ReadCookie * * *
/* Opcode: ReadCookie * P2 *
**
** Read the schema cookie from the database file and push it onto the
** When P2==0,
** read the schema cookie from the database file and push it onto the
** stack. The schema cookie is an integer that is used like a version
** number for the database schema. Everytime the schema changes, the
** cookie changes to a new random value. This opcode is used during
** initialization to read the initial cookie value so that subsequent
** database accesses can verify that the cookie has not changed.
**
** If P2>0, then read global database parameter number P2. There is
** a small fixed number of global database parameters. P2==1 is the
** database version number. Other parameters are currently unused.
**
** There must be a read-lock on the database (either a transaction
** must be started or there must be an open cursor) before
** executing this instruction.
@@ -2285,17 +2293,21 @@ case OP_Rollback: {
case OP_ReadCookie: {
int i = ++p->tos;
int aMeta[SQLITE_N_BTREE_META];
assert( pOp->p2<SQLITE_N_BTREE_META );
VERIFY( if( NeedStack(p, p->tos) ) goto no_mem; )
rc = sqliteBtreeGetMeta(pBt, aMeta);
aStack[i].i = aMeta[1];
aStack[i].i = aMeta[1+pOp->p2];
aStack[i].flags = STK_Int;
break;
}
/* Opcode: SetCookie P1 * *
/* Opcode: SetCookie P1 P2 *
**
** This operation changes the value of the schema cookie on the database.
** The new value is P1.
** When P2==0,
** this operation changes the value of the schema cookie on the database.
** The new value is P1. When P2>0, the value of global database parameter
** number P2 is changed. See ReadCookie for more information about
** global database parametes.
**
** The schema cookie changes its value whenever the database schema changes.
** That way, other processes can recognize when the schema has changed
@@ -2305,18 +2317,21 @@ case OP_ReadCookie: {
*/
case OP_SetCookie: {
int aMeta[SQLITE_N_BTREE_META];
assert( pOp->p2<SQLITE_N_BTREE_META );
rc = sqliteBtreeGetMeta(pBt, aMeta);
if( rc==SQLITE_OK ){
aMeta[1] = pOp->p1;
aMeta[1+pOp->p2] = pOp->p1;
rc = sqliteBtreeUpdateMeta(pBt, aMeta);
}
break;
}
/* Opcode: VerifyCookie P1 * *
/* Opcode: VerifyCookie P1 P2 *
**
** Check the current value of the schema cookie and make sure it is
** equal to P1. If it is not, abort with an SQLITE_SCHEMA error.
** Check the value of global database parameter number P2 and make
** sure it is equal to P1. P2==0 is the schema cookie. P1==1 is
** the database version. If the values do not match, abort with
** an SQLITE_SCHEMA error.
**
** The cookie changes its value whenever the database schema changes.
** This operation is used to detect when that the cookie has changed
@@ -2328,8 +2343,9 @@ case OP_SetCookie: {
*/
case OP_VerifyCookie: {
int aMeta[SQLITE_N_BTREE_META];
assert( pOp->p2<SQLITE_N_BTREE_META );
rc = sqliteBtreeGetMeta(pBt, aMeta);
if( rc==SQLITE_OK && aMeta[1]!=pOp->p1 ){
if( rc==SQLITE_OK && aMeta[1+pOp->p2]!=pOp->p1 ){
sqliteSetString(pzErrMsg, "database schema has changed", 0);
rc = SQLITE_SCHEMA;
}
@@ -2613,7 +2629,7 @@ case OP_Found: {
**
** Get a new integer record number used as the key to a table.
** The record number is not previously used as a key in the database
** table that cursor P1 points to. The new record number pushed
** table that cursor P1 points to. The new record number is pushed
** onto the stack.
*/
case OP_NewRecno: {
@@ -2666,13 +2682,16 @@ case OP_NewRecno: {
break;
}
/* Opcode: Put P1 * *
/* Opcode: Put P1 P2 *
**
** Write an entry into the database file P1. A new entry is
** created if it doesn't already exist or the data for an existing
** entry is overwritten. The data is the value on the top of the
** stack. The key is the next value down on the stack. The stack
** is popped twice by this instruction.
**
** If P2==1 then overwriting is prohibited. If a prior entry with
** the same key exists, an SQLITE_CONSTRAINT exception is raised.
*/
case OP_Put: {
int tos = p->tos;
@@ -2691,6 +2710,16 @@ case OP_Put: {
iKey = bigEndian(aStack[nos].i);
zKey = (char*)&iKey;
}
if( pOp->p2 ){
int res;
rc = sqliteBtreeMoveto(p->aCsr[i].pCursor, zKey, nKey, &res);
if( res==0 && rc==SQLITE_OK ){
rc = SQLITE_CONSTRAINT;
}
if( rc!=SQLITE_OK ){
goto abort_due_to_error;
}
}
rc = sqliteBtreeInsert(p->aCsr[i].pCursor, zKey, nKey,
zStack[tos], aStack[tos].n);
}