Knut Anders Hatlen created DERBY-6885:
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Summary: Remove ReuseFactory
Key: DERBY-6885
URL: https://issues.apache.org/jira/browse/DERBY-6885
Project: Derby
Issue Type: Improvement
Components: Services
Affects Versions: 10.13.0.0
Reporter: Knut Anders Hatlen
Assignee: Knut Anders Hatlen
Priority: Minor
ReuseFactory used to help reduce object allocations when converting
numbers/booleans from primitive types to object types. After DERBY-2383 and
DERBY-6230, the ReuseFactory methods are just wrappers around standard library
methods such as Integer.valueOf() and Long.valueOf().
Callers could just as easily call the corresponding valueOf() method directly,
or rely on auto-boxing. Both ways use the same cache as ReuseFactory currently
does, so ReuseFactory has no purpose anymore.
One exception: ReuseFactory.getZeroLenByteArray() is still used and provides
value, as it avoids the allocation cost when an empty byte array is needed. The
ArrayUtil class is probably just as good a home for it, so I propose we move it
there and remove the ReuseFactory class.
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