Package org.apache.lucene.codecs
Class PointsFormat
- java.lang.Object
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- org.apache.lucene.codecs.PointsFormat
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- Direct Known Subclasses:
Lucene60PointsFormat
,Lucene86PointsFormat
,Lucene90PointsFormat
,SimpleTextPointsFormat
public abstract class PointsFormat extends java.lang.Object
Encodes/decodes indexed points.
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Field Summary
Fields Modifier and Type Field Description static PointsFormat
EMPTY
APointsFormat
that has nothing indexed
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Constructor Summary
Constructors Modifier Constructor Description protected
PointsFormat()
Creates a new point format.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description abstract PointsReader
fieldsReader(SegmentReadState state)
Reads a segment.abstract PointsWriter
fieldsWriter(SegmentWriteState state)
Writes a new segment
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Field Detail
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EMPTY
public static final PointsFormat EMPTY
APointsFormat
that has nothing indexed
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Method Detail
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fieldsWriter
public abstract PointsWriter fieldsWriter(SegmentWriteState state) throws java.io.IOException
Writes a new segment- Throws:
java.io.IOException
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fieldsReader
public abstract PointsReader fieldsReader(SegmentReadState state) throws java.io.IOException
Reads a segment. 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:
java.io.IOException
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