org.apache.lucene.search

Class RemoteCachingWrapperFilter

java.lang.Object

org.apache.lucene.search.Filter

org.apache.lucene.search.RemoteCachingWrapperFilter

All Implemented Interfaces:

java.io.Serializable

public class RemoteCachingWrapperFilter
extends Filter

Provides caching of Filters themselves on the remote end of an RMI connection. The cache is keyed on Filter's hashCode(), so if it sees the same filter twice it will reuse the original version.

NOTE: This does NOT cache the Filter bits, but rather the Filter itself. Thus, this works hand-in-hand with CachingWrapperFilter to keep both file Filter cache and the Filter bits on the remote end, close to the searcher.

Usage:

To cache a result you must do something like RemoteCachingWrapperFilter f = new RemoteCachingWrapperFilter(new CachingWrapperFilter(myFilter));

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
RemoteCachingWrapperFilter(Filter filter)

Method Summary

Modifier and Type	Method and Description
java.util.BitSet	bits(IndexReader reader) Uses the FilterManager to keep the cache for a filter on the searcher side of a remote connection.

Methods inherited from class java.lang.Object

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

Constructor Detail

RemoteCachingWrapperFilter

public RemoteCachingWrapperFilter(Filter filter)

Method Detail

bits

public java.util.BitSet bits(IndexReader reader)
                      throws java.io.IOException

Uses the FilterManager to keep the cache for a filter on the searcher side of a remote connection.

Specified by:

bits in class Filter

Parameters:

reader - the index reader for the Filter

Returns:

the bitset

Throws:

java.io.IOException