ESQL: Fix conversion of a Lucene wildcard pattern to a regexp #128750
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This adds the reserved optional characters to the list that is escaped during conversion. These characters are all enabled by the RegExp.ALL flag in our use.
elasticsearchmachine added the Team:Analytics 
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astefan approved these changes Jun 3, 2025
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While testing this I find it difficult to come up with a test that proves this functionality. Would you mind adding a single IT test for this, please?
nik9000 approved these changes Jun 3, 2025
Needed to trigger filter pushdown.
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| Thanks Andrei and Nik! |
bpintea added the auto-merge-without-approval 
luigidellaquila approved these changes Jun 3, 2025
bpintea added a commit to bpintea/elasticsearch that referenced this pull request Jun 4, 2025
…c#128750) This adds the reserved optional characters to the list that is escaped during conversion. These characters are all enabled by the `RegExp.ALL` flag in our use. Closes elastic#128676, closes elastic#128677. (cherry picked from commit 5eb54bf)
elasticsearchmachine pushed a commit that referenced this pull request Jun 5, 2025
) (#128750) (#128753) (#128919) * ESQL: Pushdown constructs doing case-insensitive regexes (#128393) This introduces an optimization to pushdown to Lucense those language constructs that aim at case-insensitive regular expression matching, used with `LIKE` and `RLIKE` operators, such as: * `| WHERE TO_LOWER(field) LIKE "abc*"` * `| WHERE TO_UPPER(field) RLIKE "ABC.*"` These are now pushed as case-insensitive `wildcard` and `regexp` respectively queries down to Lucene. Closes #127479 (cherry picked from commit 0a80916) * ESQL: Fix conversion of a Lucene wildcard pattern to a regexp (#128750) This adds the reserved optional characters to the list that is escaped during conversion. These characters are all enabled by the `RegExp.ALL` flag in our use. Closes #128676, closes #128677. (cherry picked from commit 5eb54bf) * ESQL: Fix case-insensitive test generation with Unicodes (#128753) This excludes from testing the strings containing Unicode chars that change length when changing case. Closes #128705 Closes #128706 Closes #128710 Closes #128711 Closes Closes #128717 Closes #128789 Closes #128790 Closes #128791 Closes (cherry picked from commit 092d4ba) * [CI] Auto commit changes from spotless * Java21 adaptations and automerge fixes * [CI] Auto commit changes from spotless * 8.x's Lucene/RegExp doesn't support case-insensitive matching * [CI] Auto commit changes from spotless * One more Lucene 9 fix --------- Co-authored-by: elasticsearchmachine <infra-root+elasticsearchmachine@elastic.co>
dnhatn added a commit to dnhatn/elasticsearch that referenced this pull request Jun 5, 2025
…es (elastic#128393) (elastic#128750) (elastic#128753) (elastic#128919)" This reverts commit 34e08fb.
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This adds the reserved optional characters to the list that is escaped
during conversion. These characters are all enabled by the
RegExp.ALLflag in our use.
Closes #128676, closes #128677.