org.apache.lucene.codecs

Class StoredFieldsReader

java.lang.Object

org.apache.lucene.codecs.StoredFieldsReader

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, java.lang.Cloneable, Accountable

Direct Known Subclasses:

CompressingStoredFieldsReader, SimpleTextStoredFieldsReader

public abstract class StoredFieldsReader
extends java.lang.Object
implements java.lang.Cloneable, java.io.Closeable, Accountable

Codec API for reading stored fields.

You need to implement visitDocument(int, StoredFieldVisitor) to read the stored fields for a document, implement clone() (creating clones of any IndexInputs used, etc), and Closeable.close()

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	StoredFieldsReader() Sole constructor.

Method Summary

Modifier and Type	Method and Description
abstract void	checkIntegrity() Checks consistency of this reader.
abstract StoredFieldsReader	clone()
StoredFieldsReader	getMergeInstance() Returns an instance optimized for merging.
abstract void	visitDocument(int docID, StoredFieldVisitor visitor) Visit the stored fields for document docID

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.io.Closeable

close

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

getChildResources, ramBytesUsed

Constructor Detail

StoredFieldsReader

protected StoredFieldsReader()

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

Method Detail

visitDocument

public abstract void visitDocument(int docID,
                                   StoredFieldVisitor visitor)
                            throws java.io.IOException

Visit the stored fields for document docID

Throws:

java.io.IOException

clone

public abstract StoredFieldsReader clone()

Overrides:

clone in class java.lang.Object

checkIntegrity

public abstract void checkIntegrity()
                             throws java.io.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:

java.io.IOException

getMergeInstance

public StoredFieldsReader getMergeInstance()
                                    throws java.io.IOException

Returns an instance optimized for merging.

The default implementation returns this

Throws:

java.io.IOException