[Koha-bugs] [Bug 28371] Improve performance of XSLTParse4Display

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=28371

--- Comment #23 from Nick Clemens <nick at bywatersolutions.com> ---
Created attachment 132802
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https://bugs.koha-community.org/bugzilla3/attachment.cgi?id=132802&action=edit
Bug 28371: Passpreviously fetched branches and itemtypes through and fetch all
needed AV at once

This patch updates the searchResuls code to pass through the pre-constructed
branches and itemtype lookups
to XSLTParse4Display to avoid repeating this

It also updates getAuthorisedValues4MARCSubfields to fetch the values for
mapped subfields and pass
then through to transforMarc4XSLT

Note that we currently blank invalid branches and itemtypes - I presrve this,
we should open another bug
if we want to change this behaviour

Changes are covered by tests

To test:
1 - Perform searches in OPAC and staff client that return many records
2 - Use the 'Network' tab on the browser console (opened with F12 usually) to
see the time taken
3 - Note the speed before the patch
4 - Apply patch
5 - restart all the things
6 - Note improvement in speed

**Note: The improvement is more drastic the more items per record, try adding
large numbers of items to your search results to test**

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