[TYPO3-core] RFC: indexed_search: join_pages configurable

[Ernesto Baschny [cron IT]]

This is a SVN patch request (sysext indexed_search).

Problem:
In indexed_search documentation, section "Handling extendToSubpages - or
not" the join_pages "flag" is mentioned:

http://typo3.org/documentation/document-library/extension-manuals/doc_indexed_search/current/view/1/6/#id3520912


But this is a class variable which cannot be configured by an admin.
This setting is needed on sites with a huge page-tree, else the
indexed_search query is useless (>30secs per request).

Currently we have to change PHP code of the indexed_search plugin, or
write an extension to change this variable setting.


Solution:
Make this option configurable via TypoScript. I opted for a more
speaking name for the TS-setting (skipExtendToSubpagesChecking) because
"join_pages" won't tell you anything about what this flag actually does.
Feel free to suggest a better name.


Branches: Trunk only.

Reference: http://bugs.typo3.org/view.php?id=5791


Documentation changes (in doc_indexed_search, who is on charge of that?):

In 1.5 Configuration add:

search.skipExtendToSubpagesChecking = boolean = default: 0

If set to false (default), on each search the complete page tree will be
transversed to check which pages are accessible, so that the
extendToSubpages can be considered. This will work with a limited number
of page-ids (which means most sites), but will result in slow
performance on huge page trees.

If set to true, then the final result rows are joined with the pages
table to select pages that are currently accessible. This will speed up
searching in very huge page trees, but on the other hand
extendToSubpages will NOT be taken into account!


Then in 1.6 the whole "Handling extendToSubpages - or not" part can be
dropped.


Cheers,
Ernesto
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