com.lyncode.oai.proxy.core.SolrServerManager.java Source code

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Here is the source code for com.lyncode.oai.proxy.core.SolrServerManager.java

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/**
 * Copyright 2012 Lyncode
 *
 * 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.
 * 
 * @author Development @ Lyncode <development@lyncode.com>
 * @version 
 */
package com.lyncode.oai.proxy.core;

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

import javax.xml.parsers.ParserConfigurationException;

import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.apache.solr.client.solrj.SolrQuery;
import org.apache.solr.client.solrj.SolrServer;
import org.apache.solr.client.solrj.SolrServerException;
import org.apache.solr.client.solrj.embedded.EmbeddedSolrServer;
import org.apache.solr.core.CoreContainer;
import org.xml.sax.SAXException;

/**
 * @author Development @ Lyncode <development@lyncode.com>
 * @version 
 * 
 */
public class SolrServerManager {
    private static Logger log = LogManager.getLogger(SolrServerManager.class);
    private static SolrServer server = null;

    public static void initialize() {
        if (server == null) {
            String config = ConfigurationManager.getConfiguration().getString("solr.home");
            System.setProperty("solr.solr.home", config);
            System.setProperty("solr.data.dir", config + File.separator + "data");
            CoreContainer.Initializer initializer = new CoreContainer.Initializer();
            CoreContainer coreContainer;
            try {
                coreContainer = initializer.initialize();
                server = new EmbeddedSolrServer(coreContainer, "");

                try {
                    server.query(new SolrQuery("*:*"));
                    log.info("Solr Server initialized");
                } catch (SolrServerException e) {
                    log.error(e.getMessage(), e);
                }
            } catch (IOException e1) {
                log.error(e1.getMessage(), e1);
            } catch (ParserConfigurationException e1) {
                log.error(e1.getMessage(), e1);
            } catch (SAXException e1) {
                log.error(e1.getMessage(), e1);
            }
        }
    }

    public static SolrServer getServer() {
        initialize();
        return server;
    }
}