org.apache.lucene.codecs.blockterms

Class FixedGapTermsIndexWriter

java.lang.Object

org.apache.lucene.codecs.blockterms.TermsIndexWriterBase

org.apache.lucene.codecs.blockterms.FixedGapTermsIndexWriter

All Implemented Interfaces:

Closeable, AutoCloseable

public class FixedGapTermsIndexWriter
extends TermsIndexWriterBase

Selects every Nth term as and index term, and hold term bytes (mostly) fully expanded in memory. This terms index supports seeking by ord. See VariableGapTermsIndexWriter for a more memory efficient terms index that does not support seeking by ord.

WARNING: This API is experimental and might change in incompatible ways in the next release.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.lucene.codecs.blockterms.TermsIndexWriterBase

TermsIndexWriterBase.FieldWriter

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_TERM_INDEX_INTERVAL
protected IndexOutput	out

Constructor Summary

Constructors

Constructor and Description
FixedGapTermsIndexWriter(SegmentWriteState state)
FixedGapTermsIndexWriter(SegmentWriteState state, int termIndexInterval)

Method Summary

Methods

Modifier and Type	Method and Description
TermsIndexWriterBase.FieldWriter	addField(FieldInfo field, long termsFilePointer)
void	close()
protected int	indexedTermPrefixLength(BytesRef priorTerm, BytesRef indexedTerm) NOTE: if your codec does not sort in unicode code point order, you must override this method, to simply return indexedTerm.length.

Methods inherited from class java.lang.Object

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

Field Detail

out

protected IndexOutput out

DEFAULT_TERM_INDEX_INTERVAL

public static final int DEFAULT_TERM_INDEX_INTERVAL

See Also:

Constant Field Values

Constructor Detail

FixedGapTermsIndexWriter

public FixedGapTermsIndexWriter(SegmentWriteState state)
                         throws IOException

Throws:

IOException

FixedGapTermsIndexWriter

public FixedGapTermsIndexWriter(SegmentWriteState state,
                        int termIndexInterval)
                         throws IOException

Throws:

IOException

Method Detail

addField

public TermsIndexWriterBase.FieldWriter addField(FieldInfo field,
                                        long termsFilePointer)

Specified by:

addField in class TermsIndexWriterBase

indexedTermPrefixLength

protected int indexedTermPrefixLength(BytesRef priorTerm,
                          BytesRef indexedTerm)

NOTE: if your codec does not sort in unicode code point order, you must override this method, to simply return indexedTerm.length.

close

public void close()
           throws IOException

Throws:

IOException