org.apache.lucene.codecs.uniformsplit

Class UniformSplitTermsReader

java.lang.Object

FieldsProducer

org.apache.lucene.codecs.uniformsplit.UniformSplitTermsReader

Direct Known Subclasses:

STUniformSplitTermsReader

public class UniformSplitTermsReader
extends FieldsProducer

A block-based terms index and dictionary based on the Uniform Split technique.

See Also:

UniformSplitTermsWriter

Field Summary

Fields

Modifier and Type	Field and Description
protected IndexInput	blockInput
protected IndexInput	dictionaryInput
protected java.util.Map<java.lang.String,UniformSplitTerms>	fieldToTermsMap
protected PostingsReaderBase	postingsReader
protected java.util.Collection<java.lang.String>	sortedFieldNames
protected static int	VERSION_START

Constructor Summary

Constructors

Modifier	Constructor and Description
	UniformSplitTermsReader(PostingsReaderBase postingsReader, SegmentReadState state, BlockDecoder blockDecoder)
protected	UniformSplitTermsReader(PostingsReaderBase postingsReader, SegmentReadState state, BlockDecoder blockDecoder, java.lang.String codecName, int versionStart, int versionCurrent, java.lang.String termsBlocksExtension, java.lang.String dictionaryExtension)

Method Summary

Modifier and Type	Method and Description
void	checkIntegrity()
void	close()
protected void	fillFieldMap(PostingsReaderBase postingsReader, BlockDecoder blockDecoder, IndexInput dictionaryInput, IndexInput blockInput, java.util.Collection<FieldMetadata> fieldMetadataCollection, FieldInfos fieldInfos)
protected long	getTermsRamBytesUsed()
java.util.Iterator<java.lang.String>	iterator()
protected static java.util.Collection<FieldMetadata>	parseFieldsMetadata(IndexInput indexInput, FieldInfos fieldInfos)
long	ramBytesUsed()
protected static void	seekFieldsMetadata(IndexInput indexInput) Positions the given IndexInput at the beginning of the fields metadata.
int	size()
Terms	terms(java.lang.String field)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

VERSION_START

protected static final int VERSION_START

See Also:

Constant Field Values

postingsReader

protected final PostingsReaderBase postingsReader

blockInput

protected final IndexInput blockInput

dictionaryInput

protected final IndexInput dictionaryInput

fieldToTermsMap

protected final java.util.Map<java.lang.String,UniformSplitTerms> fieldToTermsMap

sortedFieldNames

protected final java.util.Collection<java.lang.String> sortedFieldNames

Constructor Detail

UniformSplitTermsReader

public UniformSplitTermsReader(PostingsReaderBase postingsReader,
                               SegmentReadState state,
                               BlockDecoder blockDecoder)
                        throws java.io.IOException

Parameters:

blockDecoder - Optional block decoder, may be null if none. It can be used for decompression or decryption.

Throws:

java.io.IOException

UniformSplitTermsReader

protected UniformSplitTermsReader(PostingsReaderBase postingsReader,
                                  SegmentReadState state,
                                  BlockDecoder blockDecoder,
                                  java.lang.String codecName,
                                  int versionStart,
                                  int versionCurrent,
                                  java.lang.String termsBlocksExtension,
                                  java.lang.String dictionaryExtension)
                           throws java.io.IOException

Parameters:

blockDecoder - Optional block decoder, may be null if none. It can be used for decompression or decryption.

Throws:

java.io.IOException

Method Detail

fillFieldMap

protected void fillFieldMap(PostingsReaderBase postingsReader,
                            BlockDecoder blockDecoder,
                            IndexInput dictionaryInput,
                            IndexInput blockInput,
                            java.util.Collection<FieldMetadata> fieldMetadataCollection,
                            FieldInfos fieldInfos)
                     throws java.io.IOException

Throws:

java.io.IOException

parseFieldsMetadata

protected static java.util.Collection<FieldMetadata> parseFieldsMetadata(IndexInput indexInput,
                                                                         FieldInfos fieldInfos)
                                                                  throws java.io.IOException

Parameters:

indexInput - IndexInput must be positioned to the fields metadata details by calling seekFieldsMetadata(IndexInput) before this call.

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Throws:

java.io.IOException

checkIntegrity

public void checkIntegrity()
                    throws java.io.IOException

Throws:

java.io.IOException

iterator

public java.util.Iterator<java.lang.String> iterator()

terms

public Terms terms(java.lang.String field)

size

public int size()

ramBytesUsed

public long ramBytesUsed()

getTermsRamBytesUsed

protected long getTermsRamBytesUsed()

seekFieldsMetadata

protected static void seekFieldsMetadata(IndexInput indexInput)
                                  throws java.io.IOException

Positions the given IndexInput at the beginning of the fields metadata.

Throws:

java.io.IOException