org.apache.lucene.index.LuceneFileNames Maven / Gradle / Ivy
/*
* Copyright 2004-2009 the original author or authors.
*
* 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.
*/
/*
* Copyright 2004-2009 the original author or authors.
*
* 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.
*/
package org.apache.lucene.index;
import java.util.HashSet;
import java.util.Set;
import org.compass.core.lucene.engine.manager.IndexHoldersCache;
import org.compass.core.lucene.engine.spellcheck.DefaultLuceneSpellCheckManager;
/**
* A set of utility methods for index file names.
*
* @author kimchy
*/
public class LuceneFileNames {
private static final Set staticFiles;
static {
staticFiles = new HashSet();
staticFiles.add("segments.gen");
staticFiles.add(IndexHoldersCache.CLEAR_CACHE_NAME);
staticFiles.add(DefaultLuceneSpellCheckManager.SPELL_CHECK_VERSION_FILENAME);
}
/**
* Returns if this file name is a static file. A static file is a file that is updated
* and changed by Lucene.
*/
public static boolean isStaticFile(String name) {
return staticFiles.contains(name);
}
/**
* Returns if the name is a segment file or not.
*/
public static boolean isSegmentsFile(String name) {
return name.startsWith(IndexFileNames.SEGMENTS) || name.equals(IndexFileNames.SEGMENTS_GEN);
}
}