Package org.apache.lucene.codecs

Class TermVectorsReader

java.lang.Object

org.apache.lucene.codecs.TermVectorsReader

All Implemented Interfaces:

Closeable, AutoCloseable, Cloneable, Accountable

Direct Known Subclasses:

CompressingTermVectorsReader, SimpleTextTermVectorsReader

public abstract class TermVectorsReader
extends Object
implements Cloneable, Closeable, Accountable

Codec API for reading term vectors:

Field Summary

Fields inherited from interface org.apache.lucene.util.Accountable

NULL_ACCOUNTABLE

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	TermVectorsReader()	Sole constructor.

Method Summary

Modifier and Type	Method	Description
abstract void	checkIntegrity()	Checks consistency of this reader.
abstract TermVectorsReader	clone()	Create a clone that one caller at a time may use to read term vectors.
abstract Fields	get(int doc)	Returns term vectors for this document, or null if term vectors were not indexed.
TermVectorsReader	getMergeInstance()	Returns an instance optimized for merging.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.lucene.util.Accountable

getChildResources, ramBytesUsed

Methods inherited from interface java.io.Closeable

close

Constructor Details

TermVectorsReader

protected TermVectorsReader()

Sole constructor. (For invocation by subclass constructors, typically implicit.)

Method Details

get

public abstract Fields get(int doc)
                    throws IOException

Returns term vectors for this document, or null if term vectors were not indexed. If offsets are available they are in an OffsetAttribute available from the PostingsEnum.

Throws:

IOException

checkIntegrity

public abstract void checkIntegrity()
                             throws IOException

Checks consistency of this reader.

Note that this may be costly in terms of I/O, e.g. may involve computing a checksum value against large data files.

Throws:

IOException

clone

public abstract TermVectorsReader clone()

Create a clone that one caller at a time may use to read term vectors.

Overrides:

clone in class Object

getMergeInstance

public TermVectorsReader getMergeInstance()

Returns an instance optimized for merging. This instance may only be consumed in the thread that called getMergeInstance().

The default implementation returns this