[core] serialization and concurrency updates to AbstractListParseFilter and
AbstractParseFilter
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Key: ABDERA-190
URL: https://issues.apache.org/jira/browse/ABDERA-190
Project: Abdera
Issue Type: Improvement
Affects Versions: 0.4.0
Reporter: Nathan Beyer
There are currently some weaknesses in the serialization and concurrency facets
of the AbstractListParseFilter and AbstractParseFilter.
Serialization adjustments
* declare explicit serialVersionUID fields
* make Collection-based fields transient and implement custom read/write methods
Concurrency adjustments
* remove the Collections.synchronizedXXX types
* use synchronized blocks to wrap all access to the fields; this will increase
the atomicity to the complete interactions with the fields, instead just each
method call
Open questions
* since AbstractListParseFilter adds thread-safety, should the
AbstractParseFilter also be thread-safe (the 'toggle' method's not safe because
it's not atomic)
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