org.terrier.structures

Class BlockFieldLexiconEntry

java.lang.Object

org.terrier.structures.LexiconEntry

org.terrier.structures.BasicLexiconEntry

org.terrier.structures.BlockFieldLexiconEntry

All Implemented Interfaces:

Serializable, org.apache.hadoop.io.Writable, BitFilePosition, BitIndexPointer, BlockEntryStatistics, EntryStatistics, FieldEntryStatistics, Pointer

public class BlockFieldLexiconEntry
extends BasicLexiconEntry
implements FieldEntryStatistics, BlockEntryStatistics

A LexiconEntry with field support

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	BlockFieldLexiconEntry.Factory Factory for creating LexiconEntries

Field Summary

Fields

Modifier and Type	Field and Description
protected int	blockCount
protected int[]	fieldFrequencies

Fields inherited from class org.terrier.structures.BasicLexiconEntry

n_t, startBitOffset, startOffset, termId, TF

Fields inherited from interface org.terrier.structures.BitIndexPointer

BIT_MASK, FILE_SHIFT, MAX_FILE_ID

Constructor Summary

Constructors

Constructor and Description
BlockFieldLexiconEntry(int fieldCount) Constructs an instance of the class with
BlockFieldLexiconEntry(int[] _fieldFrequencies, int _blockCount) Construct an instance of the class with

Method Summary

Methods

Modifier and Type	Method and Description
int	getBlockCount() The number of blocks that this term has.
int[]	getFieldFrequencies() Get the frequencies for each field
void	readFields(DataInput in)
void	setFieldFrequencies(int[] _fieldFrequencices) Sets the frequencies for each field
void	write(DataOutput out)

Methods inherited from class org.terrier.structures.BasicLexiconEntry

add, getDocumentFrequency, getFileNumber, getFrequency, getNumberOfEntries, getOffset, getOffsetBits, getTermId, pointerToString, setBitIndexPointer, setFileNumber, setNumberOfEntries, setOffset, setOffset, setPointer, setStatistics, setTermId, subtract, toString

Methods inherited from class org.terrier.structures.LexiconEntry

equals, getWritableEntryStatistics, hashCode

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.terrier.structures.EntryStatistics

add, getDocumentFrequency, getFrequency, getTermId, getWritableEntryStatistics, subtract

Field Detail

fieldFrequencies

protected final int[] fieldFrequencies

blockCount

protected int blockCount

Constructor Detail

BlockFieldLexiconEntry

public BlockFieldLexiconEntry(int fieldCount)

Constructs an instance of the class with

Parameters:

fieldCount -

BlockFieldLexiconEntry

public BlockFieldLexiconEntry(int[] _fieldFrequencies,
                      int _blockCount)

Construct an instance of the class with

Parameters:

_fieldFrequencies -

_blockCount -

Method Detail

getFieldFrequencies

public int[] getFieldFrequencies()

Get the frequencies for each field

Specified by:

getFieldFrequencies in interface FieldEntryStatistics

setFieldFrequencies

public void setFieldFrequencies(int[] _fieldFrequencices)

Sets the frequencies for each field

readFields

public void readFields(DataInput in)
                throws IOException

Description copied from class: BasicLexiconEntry

Specified by:

readFields in interface org.apache.hadoop.io.Writable

Overrides:

readFields in class BasicLexiconEntry

Throws:

IOException

write

public void write(DataOutput out)
           throws IOException

Description copied from class: BasicLexiconEntry

Specified by:

write in interface org.apache.hadoop.io.Writable

Overrides:

write in class BasicLexiconEntry

Throws:

IOException

getBlockCount

public int getBlockCount()

The number of blocks that this term has. Needed by the BlockInvertedIndexBuilder.

Specified by:

getBlockCount in interface BlockEntryStatistics