Package org.apache.lucene.codecs
Class NormsFormat
java.lang.Object
org.apache.lucene.codecs.NormsFormat
- Direct Known Subclasses:
Lucene90NormsFormat
Encodes/decodes per-document score normalization values.
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionabstract NormsConsumer
normsConsumer
(SegmentWriteState state) Returns aNormsConsumer
to write norms to the index.abstract NormsProducer
normsProducer
(SegmentReadState state) Returns aNormsProducer
to read norms from the index.
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Constructor Details
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NormsFormat
protected NormsFormat()Sole constructor. (For invocation by subclass constructors, typically implicit.)
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Method Details
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normsConsumer
Returns aNormsConsumer
to write norms to the index.- Throws:
IOException
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normsProducer
Returns aNormsProducer
to read norms from the index.NOTE: by the time this call returns, it must hold open any files it will need to use; else, those files may be deleted. Additionally, required files may be deleted during the execution of this call before there is a chance to open them. Under these circumstances an IOException should be thrown by the implementation. IOExceptions are expected and will automatically cause a retry of the segment opening logic with the newly revised segments.
- Throws:
IOException
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