John Huss created CAY-1863:
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Summary: Make determining whether a particular database type
supports length adapter-specific not universal
Key: CAY-1863
URL: https://issues.apache.org/jira/browse/CAY-1863
Project: Cayenne
Issue Type: Bug
Components: Core Library
Affects Versions: 3.2M1
Reporter: John Huss
Assignee: John Huss
Priority: Minor
Database implementations vary in regard to which data types they allow a length
to be specified for. So the static method TypesMapping.supportsLength should
be deprecated and replaced by an adapter-specific method that can be tweaked
for each supported database.
The current implementation causes some bugs in particular with the
MergerFactory which relies on the global method TypesMapping.supportsLength
when adding a new column to an existing table or changing the datatype of an
existing column. The specified length may wrongly be ignored in this case.
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