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Posted to dev@flink.apache.org by "Juho Autio (JIRA)" <ji...@apache.org> on 2018/08/25 14:23:00 UTC
[jira] [Created] (FLINK-10216) Add REGEXP_MATCH in TableAPI and SQL
Juho Autio created FLINK-10216:
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Summary: Add REGEXP_MATCH in TableAPI and SQL
Key: FLINK-10216
URL: https://issues.apache.org/jira/browse/FLINK-10216
Project: Flink
Issue Type: Sub-task
Reporter: Juho Autio
Here's a naive implementation:
{code:java}
public class RegexpMatchFunction extends ScalarFunction {
// NOTE! Flink calls eval() by reflection
public boolean eval(String value, String pattern) {
return value != null && pattern != null && value.matches(pattern);
}
}
{code}
I wonder if there would be a way to optimize this to use {{Pattern.compile(value)}} and use the compiled Pattern for multiple calls (possibly different values, but same pattern).
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