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Overview
Comment:Drop the forced error from fts3.c and add forced errors to fts2.c and fts1.c. (CVS 4427)
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SHA1: fec6567a0f8a868cda9bba2a473491dfb17b6c88
User & Date: shess 2007-09-13 18:16:08.000
Context
2007-09-14
01:48
Add tests to prevent a regression of the short read problem discovered in version 3.2.2. (CVS 4428) (check-in: 995c63b561 user: drh tags: trunk)
2007-09-13
18:16
Drop the forced error from fts3.c and add forced errors to fts2.c and fts1.c. (CVS 4427) (check-in: fec6567a0f user: shess tags: trunk)
18:14
Add an implicit (HIDDEN) docid column. This works as an alias to rowid, similar to how things work in SQLite tables with INTEGER PRIMARY KEY. Add tests to verify operation. (CVS 4426) (check-in: c8d2345200 user: shess tags: trunk)
Changes
Unified Diff Ignore Whitespace Patch
Changes to ext/fts1/fts1.c. 





















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/* The author disclaims copyright to this source code.
 *
 * This is an SQLite module implementing full-text search.
 */

/*
** The code in this file is only compiled if:

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/* fts1 has a design flaw which can lead to database corruption (see
** below).  It is recommended not to use it any longer, instead use
** fts3 (or higher).  If you believe that your use of fts1 is safe,
** add -DSQLITE_ENABLE_BROKEN_FTS1=1 to your CFLAGS.
*/
#ifndef SQLITE_ENABLE_BROKEN_FTS1
#error fts1 has a design flaw and has been deprecated.
#endif
/* The flaw is that fts1 uses the content table's unaliased rowid as
** the unique docid.  fts1 embeds the rowid in the index it builds,
** and expects the rowid to not change.  The SQLite VACUUM operation
** will renumber such rowids, thereby breaking fts1.  If you are using
** fts1 in a system which has disabled VACUUM, then you can continue
** to use it safely.  Note that PRAGMA auto_vacuum does NOT disable
** VACUUM, though systems using auto_vacuum are unlikely to invoke
** VACUUM.
**
** fts1 should be safe even across VACUUM if you only insert documents
** and never delete.
*/

/* The author disclaims copyright to this source code.
 *
 * This is an SQLite module implementing full-text search.
 */

/*
** The code in this file is only compiled if:
︙︙
Changes to ext/fts2/fts2.c. 























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/*
** 2006 Oct 10
**
** 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.

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/* fts2 has a design flaw which can lead to database corruption (see
** below).  It is recommended not to use it any longer, instead use
** fts3 (or higher).  If you believe that your use of fts2 is safe,
** add -DSQLITE_ENABLE_BROKEN_FTS2=1 to your CFLAGS.
*/
#ifndef SQLITE_ENABLE_BROKEN_FTS2
#error fts2 has a design flaw and has been deprecated.
#endif
/* The flaw is that fts2 uses the content table's unaliased rowid as
** the unique docid.  fts2 embeds the rowid in the index it builds,
** and expects the rowid to not change.  The SQLite VACUUM operation
** will renumber such rowids, thereby breaking fts2.  If you are using
** fts2 in a system which has disabled VACUUM, then you can continue
** to use it safely.  Note that PRAGMA auto_vacuum does NOT disable
** VACUUM, though systems using auto_vacuum are unlikely to invoke
** VACUUM.
**
** Unlike fts1, which is safe across VACUUM if you never delete
** documents, fts2 has a second exposure to this flaw, in the segments
** table.  So fts2 should be considered unsafe across VACUUM in all
** cases.
*/

/*
** 2006 Oct 10
**
** 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.
︙︙
Changes to ext/fts3/fts3.c. 
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/* fts3 is not ready for use.  So don't use it yet!  Contact
** shess@google.com with questions.
*/
#ifndef SQLITE_FTS3_IS_NOT_READY
#error fts3 is not ready for use.
#endif
/*
** 2006 Oct 10
**
** 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.

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/*
** 2006 Oct 10
**
** 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.
︙︙