dawidwys opened a new pull request #7280: [FLINK-10596][cep] Introduced PatternProcessFunction with access to timerService URL: https://github.com/apache/flink/pull/7280 ## What is the purpose of the change This PR introduces `PatternProcessFunction`, which implements `RichFunction`, gives access to timestamp of match as well as access to `currentProcessingTime` from `TimerService`. There was introduced an additional optional interface that user can implement, which enables handling timed out partial matches as well (`TimedOutPartialMatchHandler`). Those features(rich interface, access to timer service) are needed for integration with SQL to support UDFs and time operations. ## Brief change log - Introduced `PatternProcessFunction` - Introduced `TimedOutPartialMatchHandler` - mentioned interfaces have access to `TimerContext` - addded adapters from old interfaces to `PatternProcessFunction` - changed `CepOperator` to work only with process function ## Verifying this change - all existing tests pass - support for old interfaces - `org.apache.flink.cep.operator.CepOperatorContextTest` ## Does this pull request potentially affect one of the following parts: - Dependencies (does it add or upgrade a dependency): (yes / **no**) - The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (**yes** / no) - The serializers: (yes / **no** / don't know) - The runtime per-record code paths (performance sensitive): (yes / **no** / don't know) - Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Yarn/Mesos, ZooKeeper: (yes / **no** / don't know) - The S3 file system connector: (yes / **no** / don't know) ## Documentation - Does this pull request introduce a new feature? (**yes** / no) - If yes, how is the feature documented? (not applicable / docs / **JavaDocs** / not documented)
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