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java.lang.Object org.apache.lucene.codecs.NormsFormat
public abstract class NormsFormat
Encodes/decodes per-document score normalization values.
Constructor Summary | |
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protected |
NormsFormat()
Sole constructor. |
Method Summary | |
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abstract DocValuesConsumer |
normsConsumer(SegmentWriteState state)
Returns a DocValuesConsumer to write norms to the
index. |
abstract DocValuesProducer |
normsProducer(SegmentReadState state)
Returns a DocValuesProducer to read norms from the index. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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protected NormsFormat()
Method Detail |
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public abstract DocValuesConsumer normsConsumer(SegmentWriteState state) throws IOException
DocValuesConsumer
to write norms to the
index.
IOException
public abstract DocValuesProducer normsProducer(SegmentReadState state) throws IOException
DocValuesProducer
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.
IOException
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