GitHub user Xpray opened a pull request:
https://github.com/apache/flink/pull/4829
[FLINK-7759][TableAPI & SQL] Fix Bug that fieldName with Boolean prefâ¦
Fix Bug that fieldName with Boolean prefix can't be parsed by
ExpressionParser
## What is the purpose of the change
Fix bug that field names with boolean prefix like "truex" or "FALSE_TARGET"
can't be parsed by {{ExpressionParser}}
## Brief change log
use `||| ` instead of ` | ` in `atom` parser, try to match as long as
possible, and exchanging of positions of `fieldReference` parser and `
literalExpr ` parser is necessary, because `boolean` can be matched by both
parsers, then it's captured by the latter one ` literalExpr ` .
## Verifying this change
This change added tests and can be verified as follows:
StringExpressionTest.testFieldWithBooleanPrefix
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): no
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: no
- The serializers: no
- The runtime per-record code paths (performance sensitive):no
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Yarn/Mesos, ZooKeeper: no
## Documentation
- Does this pull request introduce a new feature? no
- If yes, how is the feature documented? not documented
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/Xpray/flink FLINK-7759
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/4829.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #4829
----
commit 4cdfd18148a1a4e97e078bee6ccf4ba8c20c8034
Author: Xpray <leonxp...@gmail.com>
Date: 2017-10-16T08:13:26Z
[FLINK-7759][TableAPI & SQL] Fix Bug that fieldName with Boolean prefix
can't be parsed by ExpressionParser.
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