Fix PayloadProcessorProvider to no longer use Directory for lookup, instead
AtomicReader
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Key: LUCENE-3735
URL: https://issues.apache.org/jira/browse/LUCENE-3735
Project: Lucene - Java
Issue Type: Sub-task
Components: core/index
Reporter: Uwe Schindler
Assignee: Uwe Schindler
Fix For: 4.0
The PayloadProcessorProvider has a broken API, this should be fixed. The
current patch mimics the old behaviour, but not 100%.
The PayloadProcessorProvider API should return a PayloadProcessor based on the
AtomicReader instance that gets merged. As AtomicReader do no longer know the
directory they are reside (they could be e.g. FilterIndexReaders,
MemoryIndexes,...) a selection by Directory is no longer possible.
The current code in Lucene trunk mimics the old behavior by doing an instanceof
SegmentReader check and then asking for a DirProvider. If something else is
merged in, Payload processing is not supported. This should be changed, the old
API could be kept backwards compatible by moving the instanceof check in a
"convenience class" DirPayloadProcessorProvider, extending
PayloadProcessorProvider.
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