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Add migration note about the deprecation of optional RegExp complement syntax (#13732) 

This commit adds a migration note about the deprecation of optional RegExp complement support.
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Chris Hegarty 2024-09-09 20:35:35 +01:00 committed by GitHub
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@ -80,9 +80,22 @@ behaviour as 9.x, clone `PersianAnalyzer` in 9.x or create custom analyzer by us
### AutomatonQuery/CompiledAutomaton/RunAutomaton/RegExp no longer determinize (LUCENE-10010)
These classes no longer take a `determinizeWorkLimit` and no longer determinize
behind the scenes. It is the responsibility of the caller to to call
behind the scenes. It is the responsibility of the caller to call
`Operations.determinize()` for DFA execution.
### RegExp optional complement syntax has been deprecated
Support for the optional complement syntax (`~`) has been deprecated.
The `COMPLEMENT` syntax flag has been removed and replaced by the
`DEPRECATED_COMPLEMENT` flag. Users wanting to enable the deprecated
complement support can do so by explicitly passing a syntax flags that
has `DEPRECATED_COMPLEMENT` when creating a `RegExp`. For example:
`new RegExp("~(foo)", RegExp.DEPRECATED_COMPLEMENT)`.
Alternatively, and quite commonly, a more simple _complement bracket expression_,
`[^...]`, may be a suitable replacement, For example, `[^fo]` matches any
character that is not an `f` or `o`.
### DocValuesFieldExistsQuery, NormsFieldExistsQuery and KnnVectorFieldExistsQuery removed in favor of FieldExistsQuery (LUCENE-10436)
These classes have been removed and consolidated into `FieldExistsQuery`. To migrate, caller simply replace those classes