John Blum created GEODE-8699:
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Summary: Expose the OQL Parser as a public API
Key: GEODE-8699
URL: https://issues.apache.org/jira/browse/GEODE-8699
Project: Geode
Issue Type: Wish
Components: querying
Reporter: John Blum
This is a request to have the OQL Parser API used by Apache Geode under the
hood be exposed as a public API, consumable by Frameworks and Tooling.
While applications may not have a need to use the OQL Parser API, Frameworks
and Tooling most certainly do. For instance, Spring Data for Apache Geode
(SDG) is currently parsing and generating OQL queries in the Spring Data
Repository infrastructure.
Currently, there is no easy way to consistently parse or generate OQL
statements given the API to parse OQL is "internal". This leaves Framework and
Tool designers to have to either 1) create a Grammar for OQL and generating a
Parser using JavaCC or ANTLR (thereby reinventing the wheel) or 2) resorting to
a poor mans recursive descent parser or using simple REGEX and String
parsing/concatenation.
#1 is dangerous if Geode's Grammar for OQL ever changes. #2 is error prone at
best.
Please consider making the OQL Parser API along with the model for the OQL
query components (e.g. projection, predicates, etc) public.
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