When parsing an aggregate descriptor, should parse a shared type system file
only once
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Key: UIMA-1230
URL: https://issues.apache.org/jira/browse/UIMA-1230
Project: UIMA
Issue Type: Improvement
Components: Core Java Framework
Affects Versions: 2.2.2
Reporter: Adam Lally
Assignee: Adam Lally
Priority: Minor
Fix For: 2.3
Frequently an aggregate will contain several primitives that all import a
single shared type system descriptor. Currently, the shared type system
descriptor will be separately parsed for each of the primitives, and each
primitive descriptor will contain a separate copy of the TypeSystemDescription
object.
When there are a large number of primitives and a large number of types in the
shared type system, this parsing takes a long time and the resulting
TypeSystemDescription objects consume a lot of memory.
Instead, we could keep a cache of imports that have already been parsed, and we
can reuse the same TypeSystemDescription object within each of the primitive
descriptors rather than having a separate copy.
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