org.apache.lucene.codecs.blocktreeords

Class OrdsBlockTreeTermsWriter

java.lang.Object

FieldsConsumer

org.apache.lucene.codecs.blocktreeords.OrdsBlockTreeTermsWriter

public final class OrdsBlockTreeTermsWriter
extends FieldsConsumer

This is just like BlockTreeTermsWriter, except it also stores a version per term, and adds a method to its TermsEnum implementation to seekExact only if the version is >= the specified version. The version is added to the terms index to avoid seeking if no term in the block has a high enough version. The term blocks file is .tiv and the terms index extension is .tipv.

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEFAULT_MAX_BLOCK_SIZE Suggested default value for the maxItemsInBlock parameter to OrdsBlockTreeTermsWriter(SegmentWriteState,PostingsWriterBase,int,int).
static int	DEFAULT_MIN_BLOCK_SIZE Suggested default value for the minItemsInBlock parameter to OrdsBlockTreeTermsWriter(SegmentWriteState,PostingsWriterBase,int,int).
static int	VERSION_CURRENT Current terms format.
static int	VERSION_START Initial terms format.

Constructor Summary

Constructors

Constructor and Description
OrdsBlockTreeTermsWriter(SegmentWriteState state, PostingsWriterBase postingsWriter, int minItemsInBlock, int maxItemsInBlock) Create a new writer.

Method Summary

Modifier and Type	Method and Description
void	close()
void	write(Fields fields, NormsProducer norms)

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_MIN_BLOCK_SIZE

public static final int DEFAULT_MIN_BLOCK_SIZE

Suggested default value for the minItemsInBlock parameter to OrdsBlockTreeTermsWriter(SegmentWriteState,PostingsWriterBase,int,int).

See Also:

Constant Field Values

DEFAULT_MAX_BLOCK_SIZE

public static final int DEFAULT_MAX_BLOCK_SIZE

Suggested default value for the maxItemsInBlock parameter to OrdsBlockTreeTermsWriter(SegmentWriteState,PostingsWriterBase,int,int).

See Also:

Constant Field Values

VERSION_START

public static final int VERSION_START

Initial terms format.

See Also:

Constant Field Values

VERSION_CURRENT

public static final int VERSION_CURRENT

Current terms format.

See Also:

Constant Field Values

Constructor Detail

OrdsBlockTreeTermsWriter

public OrdsBlockTreeTermsWriter(SegmentWriteState state,
                                PostingsWriterBase postingsWriter,
                                int minItemsInBlock,
                                int maxItemsInBlock)
                         throws java.io.IOException

Create a new writer. The number of items (terms or sub-blocks) per block will aim to be between minItemsPerBlock and maxItemsPerBlock, though in some cases the blocks may be smaller than the min.

Throws:

java.io.IOException

Method Detail

write

public void write(Fields fields,
                  NormsProducer norms)
           throws java.io.IOException

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Throws:

java.io.IOException