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useful constants representing filenames and extensions used by lucene

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git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@189791 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Bernhard Messer 2005-06-09 18:57:20 +00:00
parent 088f61f774
commit 7f82450470
1 changed files with 53 additions and 0 deletions
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src/java/org/apache/lucene/index/IndexFileNames.java Normal file
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package org.apache.lucene.index;
/**
* 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.
*/
/**
* Useful constants representing filenames and extensions used by lucene
*
* @author Bernhard Messer
* @version $rcs = ' $Id: Exp $ ' ;
*/
final class IndexFileNames {
/** Name of the index segment file */
static final String SEGMENTS = "segments";
/** Name of the index deletable file */
static final String DELETABLE = "deletable";
/**
* This array contains all filename extensions used by Lucene's index files, with
* one exception, namely the extension made up from <code>.f</code> + a number.
* Also note that two of Lucene's files (<code>deletable</code> and
* <code>segments</code>) don't have any filename extension.
*/
static final String INDEX_EXTENSIONS[] = new String[] {
"cfs", "fnm", "fdx", "fdt", "tii", "tis", "frq", "prx", "del",
"tvx", "tvd", "tvf", "tvp" };
/** File extensions of old-style index files */
static final String COMPOUND_EXTENSIONS[] = new String[] {
"fnm", "frq", "prx", "fdx", "fdt", "tii", "tis"
};
/** File extensions for term vector support */
static final String VECTOR_EXTENSIONS[] = new String[] {
"tvx", "tvd", "tvf"
};
}