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https://issues.apache.org/jira/browse/CALCITE-2415?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16603702#comment-16603702
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Vladimir Sitnikov commented on CALCITE-2415:
--------------------------------------------
The adapters are different though.
I'm afraid the only "reusable" part could be
1) Normalization of the expression (e.g. convert `5=x` to `x=5`). I think such
the normalization should be added to RexSimplify though (
2) that's it :-/
It looks like "pattern matching for RexNode" might be useful, however I'm not
sure if that's much better than simple walking functions.
By pattern matching I mean something like:
{code:java}
Matcher m = ..;
m.registerRule( rexOp(EQ, NE, GT, ...).withArguments(rexInput(), rexLiteral(),
(???) -> { ... convert to string/querybuilder/etc somehow ... } );
m.runRules(rexNode);
{code}
> Evaluation of predicate "(A or B) and C" fails for MongoDB adapter
> ------------------------------------------------------------------
>
> Key: CALCITE-2415
> URL: https://issues.apache.org/jira/browse/CALCITE-2415
> Project: Calcite
> Issue Type: Bug
> Components: mongodb
> Reporter: Andrei Sereda
> Assignee: Michael Mior
> Priority: Critical
>
> h2. Queries that are working
> {code:java}
> select count(*) from "elastic" where _MAP['foo'] in ('1') and true;
> select count(*) from "elastic" where _MAP['foo'] ='1' and true;
> select count(*) from "elastic" where _MAP['foo'] in ('1', '2');
> {code}
> h2. Queries that are failing
> {code:java}
> select count(*) from "elastic" where _MAP['foo'] in ('1', '2') and true;
> select count(*) from "elastic" where true and _MAP['foo'] in ('1', '2');
> select count(*) from "elastic" where (_MAP['foo'] ='1' or _MAP['foo'] = '2')
> and true;
> {code}
> h2. Mongo Adapter Exception
> {quote}select * from "mongo"."col"
> where _MAP['foo'] in ('1', '2') and true;
> java.lang.AssertionError: cannot translate OR(=(ITEM($0, 'foo'), '1'),
> =(ITEM($0, 'foo'), '2'))
> at org.apache.calcite.adapter.mongodb.MongoFilter$
> Translator.translateMatch2(MongoFilter.java:181)
> at org.apache.calcite.adapter.mongodb.MongoFilter$
> Translator.translateAnd(MongoFilter.java:116)
> at org.apache.calcite.adapter.mongodb.MongoFilter$
> Translator.translateOr(MongoFilter.java:98)
> at org.apache.calcite.adapter.mongodb.MongoFilter$
> Translator.translateMatch(MongoFilter.java:91)
> at org.apache.calcite.adapter.mongodb.MongoFilter$
> Translator.access$000(MongoFilter.java:77)
> at org.apache.calcite.adapter.mongodb.MongoFilter.implement(
> MongoFilter.java:72)
> at org.apache.calcite.adapter.mongodb.MongoRel$Implementor.
> visitChild(MongoRel.java:51)
> at org.apache.calcite.adapter.mongodb.MongoToEnumerableConverter.
> implement(MongoToEnumerableConverter.java:84)
> at org.apache.calcite.adapter.enumerable.EnumerableRelImplementor.
> implementRoot(EnumerableRelImplementor.java:103)
> at org.apache.calcite.adapter.enumerable.EnumerableInterpretable.
> toBindable(EnumerableInterpretable.java:92)
> {quote}
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