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java.lang.Object org.apache.lucene.codecs.NormsFormat org.apache.lucene.codecs.lucene42.Lucene42NormsFormat
public final class Lucene42NormsFormat
Lucene 4.2 score normalization format.
NOTE: this uses the same format as Lucene42DocValuesFormat
Numeric DocValues, but with different file extensions, and passing
PackedInts.FASTEST
for uncompressed encoding: trading off
space for performance.
Files:
Lucene42DocValuesFormat
Constructor Summary | |
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Lucene42NormsFormat()
Sole constructor |
Method Summary | |
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DocValuesConsumer |
normsConsumer(SegmentWriteState state)
Returns a DocValuesConsumer to write norms to the
index. |
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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public Lucene42NormsFormat()
Method Detail |
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public DocValuesConsumer normsConsumer(SegmentWriteState state) throws IOException
NormsFormat
DocValuesConsumer
to write norms to the
index.
normsConsumer
in class NormsFormat
IOException
public DocValuesProducer normsProducer(SegmentReadState state) throws IOException
NormsFormat
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.
normsProducer
in class NormsFormat
IOException
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