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 filters 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

CachingWrapperFilter(Filter filter)

Method Summary

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.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, 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()