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Overview
| Comment: | Have sqlite3_blob_bytes() return 0 following a failed call to sqlite3_reopen_blob(). |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: | 476a8b492124d31e0656e61a6183ab55 |
| User & Date: | dan 2010-12-06 17:11:06 |
Context
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2010-12-06
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| 18:50 | Initialize all constants at the very beginning of a prepared statement. Do not allow constant initialization to occur once control flow has a chance to diverge, to avoid the possibility of having uninitialized registers. Ticket [80ba201079ea60807]. check-in: c5c53152 user: drh tags: trunk | |
| 17:11 | Have sqlite3_blob_bytes() return 0 following a failed call to sqlite3_reopen_blob(). check-in: 476a8b49 user: dan tags: trunk | |
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2010-12-04
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| 19:35 | Version 3.7.4 release candidate 2. check-in: 40756fe1 user: drh tags: trunk | |
Changes
Changes to src/sqlite.h.in.
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** ^(The new row must meet the same criteria as for [sqlite3_blob_open()] - ** it must exist and there must be either a blob or text value stored in ** the nominated column.)^ ^If the new row is not present in the table, or if ** it does not contain a blob or text value, or if another error occurs, an ** SQLite error code is returned and the blob handle is considered aborted. ** ^All subsequent calls to [sqlite3_blob_read()], [sqlite3_blob_write()] or ** [sqlite3_blob_reopen()] on an aborted blob handle immediately return ** SQLITE_ABORT. ** ** ^This function sets the database handle error code and message. */ SQLITE_EXPERIMENTAL int sqlite3_blob_reopen(sqlite3_blob *, sqlite3_int64); /* ** CAPI3REF: Close A BLOB Handle |
| > |
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** ^(The new row must meet the same criteria as for [sqlite3_blob_open()] - ** it must exist and there must be either a blob or text value stored in ** the nominated column.)^ ^If the new row is not present in the table, or if ** it does not contain a blob or text value, or if another error occurs, an ** SQLite error code is returned and the blob handle is considered aborted. ** ^All subsequent calls to [sqlite3_blob_read()], [sqlite3_blob_write()] or ** [sqlite3_blob_reopen()] on an aborted blob handle immediately return ** SQLITE_ABORT. ^Calling [sqlite3_blob_bytes()] on an aborted blob handle ** always returns zero. ** ** ^This function sets the database handle error code and message. */ SQLITE_EXPERIMENTAL int sqlite3_blob_reopen(sqlite3_blob *, sqlite3_int64); /* ** CAPI3REF: Close A BLOB Handle |
Changes to src/vdbeblob.c.
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** Query a blob handle for the size of the data.
**
** The Incrblob.nByte field is fixed for the lifetime of the Incrblob
** so no mutex is required for access.
*/
int sqlite3_blob_bytes(sqlite3_blob *pBlob){
Incrblob *p = (Incrblob *)pBlob;
return p ? p->nByte : 0;
}
/*
** Move an existing blob handle to point to a different row of the same
** database table.
**
** If an error occurs, or if the specified row does not exist or does not
................................................................................
sqlite3Error(db, rc, (zErr ? "%s" : 0), zErr);
sqlite3DbFree(db, zErr);
}
assert( rc!=SQLITE_SCHEMA );
}
rc = sqlite3ApiExit(db, rc);
sqlite3_mutex_leave(db->mutex);
return rc;
}
#endif /* #ifndef SQLITE_OMIT_INCRBLOB */
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>
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** Query a blob handle for the size of the data.
**
** The Incrblob.nByte field is fixed for the lifetime of the Incrblob
** so no mutex is required for access.
*/
int sqlite3_blob_bytes(sqlite3_blob *pBlob){
Incrblob *p = (Incrblob *)pBlob;
return (p && p->pStmt) ? p->nByte : 0;
}
/*
** Move an existing blob handle to point to a different row of the same
** database table.
**
** If an error occurs, or if the specified row does not exist or does not
................................................................................
sqlite3Error(db, rc, (zErr ? "%s" : 0), zErr);
sqlite3DbFree(db, zErr);
}
assert( rc!=SQLITE_SCHEMA );
}
rc = sqlite3ApiExit(db, rc);
assert( rc==SQLITE_OK || p->pStmt==0 );
sqlite3_mutex_leave(db->mutex);
return rc;
}
#endif /* #ifndef SQLITE_OMIT_INCRBLOB */
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Changes to test/incrblob3.test.
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} {1 SQLITE_ABORT}
do_test incrblob3-2.2.$tn.4 {
list [catch {sqlite3_blob_read $::blob 0 10} msg] $msg
} {1 SQLITE_ABORT}
do_test incrblob3-2.2.$tn.5 {
list [catch {sqlite3_blob_write $::blob 0 "abcd"} msg] $msg
} {1 SQLITE_ABORT}
do_test incrblob3-2.2.$tn.4 { close $::blob } {}
}
# Test that passing NULL to sqlite3_blob_XXX() APIs returns SQLITE_MISUSE.
#
# incrblob3-3.1: sqlite3_blob_reopen()
# incrblob3-3.2: sqlite3_blob_read()
# incrblob3-3.3: sqlite3_blob_write()
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} {1 SQLITE_ABORT}
do_test incrblob3-2.2.$tn.4 {
list [catch {sqlite3_blob_read $::blob 0 10} msg] $msg
} {1 SQLITE_ABORT}
do_test incrblob3-2.2.$tn.5 {
list [catch {sqlite3_blob_write $::blob 0 "abcd"} msg] $msg
} {1 SQLITE_ABORT}
do_test incrblob3-2.2.$tn.6 {
sqlite3_blob_bytes $::blob
} {0}
do_test incrblob3-2.2.$tn.7 { close $::blob } {}
}
# Test that passing NULL to sqlite3_blob_XXX() APIs returns SQLITE_MISUSE.
#
# incrblob3-3.1: sqlite3_blob_reopen()
# incrblob3-3.2: sqlite3_blob_read()
# incrblob3-3.3: sqlite3_blob_write()
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