org.apache.lucene.search

Class CachingWrapperFilter

java.lang.Object

org.apache.lucene.search.Filter

org.apache.lucene.search.CachingWrapperFilter

All Implemented Interfaces:

Serializable

public class CachingWrapperFilter
extends Filter

Wraps another filter's result and caches it. The caching behavior is like QueryFilter. The purpose is to allow filters to simply filter, and then wrap with this class to add caching, keeping the two concerns decoupled yet composable.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
CachingWrapperFilter(Filter filter)

Method Summary

Methods

Modifier and Type	Method and Description
BitSet	bits(IndexReader reader) Returns a BitSet with true for documents which should be permitted in search results, and false for those that should not.
boolean	equals(Object o)
int	hashCode()
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

CachingWrapperFilter

public CachingWrapperFilter(Filter filter)

Parameters:

filter - Filter to cache results of

Method Detail

bits

public BitSet bits(IndexReader reader)
            throws IOException

Description copied from class: Filter

Returns a BitSet with true for documents which should be permitted in search results, and false for those that should not.

Specified by:

bits in class Filter

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object