Till Rohrmann created FLINK-3319:
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Summary: Add or operator to CEP's pattern API
Key: FLINK-3319
URL: https://issues.apache.org/jira/browse/FLINK-3319
Project: Flink
Issue Type: Improvement
Components: CEP
Affects Versions: 1.0.0
Reporter: Till Rohrmann
Priority: Minor
Adding an {{or}} operator to CEP's pattern API would be beneficial. This would
considerably extend the set of supported patterns. The {{or}} operator lets you
define multiple succeeding pattern states for the next stage.
{code}
Pattern.begin("start").next("middle1").where(...).or("middle2").where(...)
{code}
In order to implement the {{or}} operator, one has to extend the {{Pattern}}
class. Furthermore, the {{NFACompiler}} has to be extended to generate two
resulting pattern states in case of an {{or}} operator.
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