org.terrier.structures
Class SimpleDocumentIndexEntry

java.lang.Object
  org.terrier.structures.DocumentIndexEntry
      org.terrier.structures.SimpleDocumentIndexEntry

All Implemented Interfaces:

org.apache.hadoop.io.Writable, BitFilePosition, BitIndexPointer, Pointer

public class SimpleDocumentIndexEntry
extends DocumentIndexEntry

A document index entry that doesn't write out direct index offset.

Nested Class Summary

static class

SimpleDocumentIndexEntry.Factory Factory for the creation of DocumentIndexEntry objects

Field Summary

Fields inherited from interface org.terrier.structures.BitIndexPointer

BIT_MASK, FILE_SHIFT, MAX_FILE_ID

Constructor Summary

SimpleDocumentIndexEntry()
Construct an instance of the class.

SimpleDocumentIndexEntry(DocumentIndexEntry die)
Construct an instance of the class with

Method Summary

byte	getFileNumber() Returns the file number: 0-32
String	pointerToString() Returns a textual representation of the pointer alone
void	readFields(DataInput in)
void	setBitIndexPointer(BitIndexPointer pointer) Update this pointer to reflect the same values as the specified pointer
void	setFileNumber(byte fileId) Set the file number
void	setNumberOfEntries(int n) Set the number of "things that the pointer refers to
void	setOffset(BitFilePosition pos) Set the offset
void	setPointer(Pointer p) Sets the pointer within this object to that represented by the specified pointer
void	write(DataOutput out)

Methods inherited from class org.terrier.structures.DocumentIndexEntry

getDocumentLength, getNumberOfEntries, getOffset, getOffsetBits, setDocumentLength, setOffset, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleDocumentIndexEntry

public SimpleDocumentIndexEntry()

Construct an instance of the class.

SimpleDocumentIndexEntry

public SimpleDocumentIndexEntry(DocumentIndexEntry die)

Construct an instance of the class with

Parameters:

die -

Method Detail

setNumberOfEntries

public void setNumberOfEntries(int n)

Set the number of "things that the pointer refers to

setOffset

public void setOffset(BitFilePosition pos)

Set the offset Does nothing in this implementation

setBitIndexPointer

public void setBitIndexPointer(BitIndexPointer pointer)

Update this pointer to reflect the same values as the specified pointer Does nothing in this implementation

Parameters:

pointer - - pointer to use to set the offset, bit offset and file Id parameters.

readFields

public void readFields(DataInput in)
                throws IOException

Throws:

IOException

write

public void write(DataOutput out)
           throws IOException

Throws:

IOException

pointerToString

public String pointerToString()

Returns a textual representation of the pointer alone

setPointer

public void setPointer(Pointer p)

Sets the pointer within this object to that represented by the specified pointer Does nothing in this implementation

Parameters:

p - other pointer to update the pointer in this object

getFileNumber

public byte getFileNumber()

Returns the file number: 0-32

Specified by:

getFileNumber in interface BitIndexPointer

Overrides:

getFileNumber in class DocumentIndexEntry

setFileNumber

public void setFileNumber(byte fileId)

Set the file number Does nothing in this implementation

Specified by:

setFileNumber in interface BitIndexPointer

Overrides:

setFileNumber in class DocumentIndexEntry