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TestCachingWrapperFilter.javaAPI DocApache Lucene 1.4.31625Tue Mar 30 00:48:06 BST 2004org.apache.lucene.search

TestCachingWrapperFilter

public class TestCachingWrapperFilter extends TestCase
Copyright 2004 The Apache Software Foundation Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

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public voidtestCachingWorks()

    Directory dir = new RAMDirectory();
    IndexWriter writer = new IndexWriter(dir, new StandardAnalyzer(), true);
    writer.close();

    IndexReader reader = IndexReader.open(dir);

    MockFilter filter = new MockFilter();
    CachingWrapperFilter cacher = new CachingWrapperFilter(filter);

    // first time, nested filter is called
    cacher.bits(reader);
    assertTrue("first time", filter.wasCalled());

    // second time, nested filter should not be called
    filter.clear();
    cacher.bits(reader);
    assertFalse("second time", filter.wasCalled());

    reader.close();