mtlcl410andClaude Opus 5.5 6918d0be21 M6: a static XFA form whose data fills thousands of fields opens in seconds (#4638) ...

Opening a static XFA form gives its fields the values in its datasets
(a form filled in by another application). Each value went through
forms::set_value, which reads the whole field tree to find the field,
writes it, and recalculates, reading the tree again. With n values that
is about 2n readings of n fields: quadratic. A public 136-page form with
about 6,000 fields took 261 s to open, a 95-page one with about 4,000
took 112 s; 8,000 synthetic fields took over ten minutes.

forms::set_values fills a batch as set_value fills each in turn, reading
the form once and recalculating once after the last value (the
calculation order, ISO 32000-2 Table 224 /CO, runs once over the final
values). Fields with the same fully qualified name (12.7.4.2) still share
the value. A name the batch already wrote, or a twin of it, makes the
form be read again first, so each write starts from what the earlier one
left, as one by one. Each value reports its own result; a failed
recalculation fails the batch, as it fails set_value. The engine collects
the changed values and fills them with set_values, finding fields by name
through a map rather than a scan.

The two forms now open in 4 s and 3 s, with the same fields, values,
warnings and document information as before; 8,000 synthetic fields open
in 1.5 s.

Tests: set_values matches set_value one by one (values, twins, the
calculated total, every appearance, saved; refusals for an unknown name,
a read-only field, an unknown option and clearing a no-toggle-off radio
group the batch selected); it reads the form a fixed number of times; the
engine takes 59 data values on a 60-field static form exactly as filling
them one by one does (the read-only one refused); and opening 800 fields
takes under 16 times as long as 100 (about 4x now, about 48x before).


Claude-Session: https://claude.ai/code/session_01CBVyQEwtmEw3mS1MoAiwrK

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-25 10:02:35 -04:00

..

data.rs

forms: clear typed XFA password field values from datasets on save (#3944) (#4506)

2026-10-24 21:08:21 -04:00

fixtures.rs

M6: a static XFA form whose data fills thousands of fields opens in seconds (#4638)

2026-10-25 10:02:35 -04:00

image.rs

XFA: turn TIFF pictures by their Orientation tag

2026-10-18 20:37:33 +02:00

layout.rs

refactor(xfa): explicit model imports (Sonar S2208) (#4403)

2026-10-24 10:31:05 -04:00

lib.rs

M9: name a laid-out XFA form's signature fields by their SOM path, so other viewers find the signature (#4507)

2026-10-25 10:01:53 -04:00

model.rs

Merge track r3-t03

2026-10-24 06:39:33 +00:00

packets.rs

fix(xfa): read a packet stream the XFA array lists again only once

2026-10-22 17:08:55 +00:00

parse.rs

refactor(xfa): explicit model imports (Sonar S2208) (#4403)

2026-10-24 10:31:05 -04:00

pdf.rs

M9: name a laid-out XFA form's signature fields by their SOM path, so other viewers find the signature (#4507)

2026-10-25 10:01:53 -04:00

picture.rs

M12: a date pattern whose date the first can't keep gives way to a later one

2026-10-22 09:01:48 -04:00

script.rs

M9: name a laid-out XFA form's signature fields by their SOM path, so other viewers find the signature (#4507)

2026-10-25 10:01:53 -04:00

tests.rs

M9: name a laid-out XFA form's signature fields by their SOM path, so other viewers find the signature (#4507)

2026-10-25 10:01:53 -04:00

text.rs

Merge PR #4318: M12: links in XFA rich text become clickable links

2026-10-24 06:24:04 +00:00