drh
0f200bc580
Add the JsonParse.zAlt field to old revised JSON text after a change.
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Demonstrate that this elminates the need for reparsing after a change
by using it in the json_remove() function. This is an incremental check-in
containing lots of cruft.
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2023-07-26 00:48:45 +00:00
drh
59b8e666f6
Clarify ownership of the various objects involved in parsing JSON.
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2023-07-25 20:26:47 +00:00
drh
440e696d5e
Incremental improvements to JSON parsing - trying to fold in the RCStr object.
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2023-07-25 18:28:03 +00:00
drh
4bca124845
Fix a minor problem with error reporting in JSON.
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2023-07-25 15:43:01 +00:00
drh
f02cc9a324
Create the new RCStr class of strings and try to use them for JSON storage.
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2023-07-25 15:08:18 +00:00
drh
b715fe9d80
It is an error to try to insert a BLOB value into JSON.
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2023-07-24 23:27:05 +00:00
drh
3d2a559ecb
Clean up some #defines in json.
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2023-07-24 22:45:59 +00:00
drh
27553579c0
Rework the JSON parse structure to facilitate better caching. Passes all
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tests.
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2023-07-24 22:34:26 +00:00
drh
9125d5ab6c
Incremental progress toward improved caching of parsed JSON.
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2023-07-24 17:59:25 +00:00
drh
7d70571142
Merge the latest trunk enhancements into the json-opt branch.
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2023-07-24 12:37:23 +00:00
stephan
479cfd5af3
When writing the filename header in a opfs-sahpool file, ensure that all remaining bytes in that part of the header are zeroed out to avoid the downstream problems reported in [forum:d50ec48a293988a5|forum post d50ec48a293988a5].
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2023-07-23 22:14:41 +00:00
stephan
2ecadd8869
Add the opfs-sahpool sqlite3_vfs implementation to JS, offering an alternative to the other OPFS VFS (with tradeoffs).
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2023-07-22 19:57:42 +00:00
drh
5d03b1610f
Do not read past the end of a text buffer looking for a zero terminator, as
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that space might not be initialized. If the buffer is owned, just set the
null terminator. This is a better fix for the OSSFuzz-detected
use-of-initialized-value problem.
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2023-07-22 16:37:28 +00:00
drh
61a5b6e3bc
Fix a harmless use-of-initialized-value warning from OSSFuzz that results
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from recent large string optmizations.
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2023-07-22 15:21:41 +00:00
drh
b2ee272075
Performance enhancements for queries using very large string values.
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2023-07-21 22:28:34 +00:00
drh
21f22f9088
Mark an unreachable branch as NEVER().
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2023-07-21 22:22:13 +00:00
drh
89f07b1276
Fix harmless compiler warning introduced by the previous check-in.
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2023-07-21 19:17:26 +00:00
drh
028acd974f
Avoid a potentially large strlen() in sqlite3DecOrHexToI64().
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2023-07-21 18:38:59 +00:00
drh
569700a72e
Further improvements to large string handling in relation to JSON.
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2023-07-21 18:09:07 +00:00
drh
eee8687a9f
Fix harmless compiler warning about signed/unsigned comparison.
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2023-07-21 15:07:56 +00:00
drh
7a2280fe65
Multiple optimizations that try to preserve or infer the zero-terminated
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property of TEXT values. Avoid unnecessary copying of text values destined
to become function parameters. All changes help improve performance of
doing UPDATEs on large JSON values that are indexed multiple ways.
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2023-07-21 15:01:53 +00:00
drh
c8f4fec2de
More infrastructure changes towards improving JSON cache performance.
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Incremental check-in.
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2023-07-21 11:09:53 +00:00
stephan
bfe6dd0100
Minor internal cleanups in the opfs-sahpool VFS.
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2023-07-21 10:51:35 +00:00
stephan
3068d6622e
Internal cleanups in the async part of the JS library bootstrap phase.
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2023-07-21 09:10:42 +00:00
stephan
35325a37ce
Minor internal cleanups in JS code.
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2023-07-20 23:25:32 +00:00
drh
51d7869096
Experimental framework upon which to build a better JSON parse structure that
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supports cached of modified JSON. All of these changes are tentative and
subject to change or removal. Incremental check-in.
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2023-07-20 17:45:09 +00:00
stephan
0b518b8d65
Filter the OPFS VFSes out of the sqlite3-node.mjs build. Add another level of subdirectory to the sahpool to later enable transparent support of client-provided files under the VFS's root dir. Rework the awkward sahpool-via-oo1 mapping.
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2023-07-20 09:06:42 +00:00
drh
f9bfc32b73
Performance enhancements to the JSON parser and code generator.
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2023-07-19 23:02:45 +00:00
drh
93b3c1f398
Revise the new JSON parser performance test to make the test run 25 times
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longer, and thus provide a more repeatable number.
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2023-07-19 20:23:34 +00:00
drh
5e4d77fa88
Describe JSON parser performance testing procedure in test/json/README.md
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2023-07-19 19:23:30 +00:00
stephan
55f318e53f
More internal refactoring and docs for opfs-sahpool.
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2023-07-19 17:47:02 +00:00
stephan
96cb7007a9
Update the development-over-ssh docs for the wasm build.
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2023-07-19 17:46:28 +00:00
drh
50834d8b74
Further improvement to JSON parser performance.
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2023-07-19 17:24:36 +00:00
drh
8376ae7295
Further performance enhancements to JSON parsing and rendering. Total
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performance gain for large JSONs so far on this branch is about 11%.
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2023-07-19 15:06:29 +00:00
drh
7a816e771a
Performance optimization for parsing large JSONs that contain lots of text.
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2023-07-19 13:50:31 +00:00
stephan
eafb4418a0
Major restructuring of opfs-sahpool to improve maintainability and hopefully make it easier to reuse these pieces in the upcoming JSPI-based VFS experiment.
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2023-07-19 13:31:29 +00:00
stephan
cd302a5e32
Appearance and legibility improvements for tester1.js.
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2023-07-19 11:33:52 +00:00
drh
37fd50df1f
Two minor improvements to sum(), one of which was inspired by
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[forum:/forumpost/af5be98dbc|forum post af5be98dbc].
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2023-07-19 09:52:10 +00:00
stephan
780bc4c557
Internal refactoring in opfs-sahpool. Move OPFS tests to the end of tester1.c-cpp.js.
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2023-07-19 08:18:25 +00:00
drh
9246c85b61
Do not use the [/info/609fbb94b8f01d67|viewscan optimization] on a query
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that has only a single loop, as the cost adjustments can cause problems
for outer queries. Proposed fix for the performance regression reported by
[forum:/forumpost/64d36440e473516c|forum post 64d36440e473516c].
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2023-07-18 21:06:19 +00:00
drh
6a9be2cbc7
Improved ".wheretrace" for the VIEWSCAN optimization.
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2023-07-18 20:41:09 +00:00
stephan
aed5abcc0f
More opfs-sahpool tests.
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2023-07-18 19:47:19 +00:00
stephan
0649a1a05d
Fix a shadowed var in opfs-sahpool and add more tests.
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2023-07-18 19:27:11 +00:00
stephan
b0dd9d427f
Further refactoring of opfs-sahpool and start integrating it into tester1.c-pp.js.
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2023-07-18 18:52:41 +00:00
dan
a5b1f34125
Fix memory leak in fts5 introduced by [def41225].
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2023-07-18 16:29:34 +00:00
stephan
d69e6e6efb
Major restructuring of the opfs-sahpool bits to better support multiple instances per app (each sandboxed from each other). Eliminate the pesky promise resolution race condition when two such instances are loaded in parallel.
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2023-07-18 16:24:51 +00:00
dan
263a8e8c0a
Fix a buffer overrun in fts5 that could occur in 'secure-delete' mode when dealing with corrupt database records.
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2023-07-18 13:55:19 +00:00
stephan
dec4cea24c
Refactor opfs-sahpool to support multiple instances, each with a separate VFS name and directory.
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2023-07-18 12:09:16 +00:00
stephan
99d4a2db46
Another -DSQLITE_TEMP_STORE=3 to 2 change for the wasm build.
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2023-07-17 07:43:04 +00:00
stephan
ed640943c4
sahpool vfs: rename defaultCapacity to initialCapacity, per feedback.
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2023-07-17 07:14:12 +00:00