com.vmware.demo.sgf.lucene.LuceneIndexRepoFactory.java Source code

Introduction

Here is the source code for com.vmware.demo.sgf.lucene.LuceneIndexRepoFactory.java

Source

/*
 * Copyright 2012 VMWare.
 *
 * 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 com.vmware.demo.sgf.lucene;

import java.io.File;
import java.io.IOException;

import org.apache.commons.io.FileUtils;
import com.vmware.demo.sgf.lucene.impl.LuceneGemFireRepositoryImpl;

/**
 * 
 * 
 * @author Lyndon Adams
 * 
 */
public final class LuceneIndexRepoFactory {

    static String indexDirectory = "./luceneIdx";

    static LuceneGemFireRepository instance;

    protected LuceneIndexRepoFactory() {
    }

    public void setIndexDirectory(final String directory) {
        indexDirectory = directory;
    }

    /**
     * Create the index directory also remove the write.lock file if it exists.
     * 
     * @throws IOException
     */
    private static void createIndexDirectory() throws IOException {
        FileUtils.forceMkdir(new File(indexDirectory));
        FileUtils.deleteQuietly(new File(indexDirectory + "/write.lock"));
    }

    private static LuceneGemFireRepository createLuceneGemFireRepository(final String indexDirectory)
            throws IOException {
        if (instance == null) {
            createIndexDirectory();
            instance = new LuceneGemFireRepositoryImpl(indexDirectory);
        }
        return instance;
    }

    public static LuceneGemFireRepository getInstance() throws IOException {
        if (instance == null)
            createLuceneGemFireRepository(indexDirectory);
        return instance;
    }
}