Andrey Mashenkov created IGNITE-18872:
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Summary: Sql. Make IgniteTypeFactory a singletone.
Key: IGNITE-18872
URL: https://issues.apache.org/jira/browse/IGNITE-18872
Project: Ignite
Issue Type: Improvement
Components: sql
Reporter: Andrey Mashenkov
Fix For: 3.0.0-beta2
As of now we have one static instance of TypeFactory in BasicQueryContext and
another one is creating in the class constructor.
TypeFactory cache type objects and use intern (similar to String.intern()) to
avoid duplicate objects.
Type comparison, which are created with different factories, via equals is not
cheap. Actually, a string digest of each object created, then strings are
compared each time.
It make no sense to have more than one TypeFactory instance.
Also, we have few places where types are compared as ‘==’ that is incorrect.
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