com.lyncode.oai.proxy.data.ProxyIdentify.java Source code

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Here is the source code for com.lyncode.oai.proxy.data.ProxyIdentify.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.data;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import javax.servlet.http.HttpServletRequest;

import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.apache.solr.client.solrj.SolrQuery;
import org.apache.solr.client.solrj.SolrQuery.ORDER;
import org.apache.solr.client.solrj.SolrServer;
import org.apache.solr.client.solrj.SolrServerException;
import org.apache.solr.common.SolrDocumentList;

import com.lyncode.oai.proxy.core.ConfigurationManager;
import com.lyncode.oai.proxy.core.SolrServerManager;
import com.lyncode.xoai.dataprovider.core.DeleteMethod;
import com.lyncode.xoai.dataprovider.core.Granularity;
import com.lyncode.xoai.dataprovider.data.AbstractIdentify;

/**
 * @author Development @ Lyncode <development@lyncode.com>
 * @version 
 */
public class ProxyIdentify extends AbstractIdentify {
    private static Logger log = LogManager.getLogger(ProxyIdentify.class);

    private HttpServletRequest _request;

    public ProxyIdentify(HttpServletRequest request) {
        _request = request;
    }

    /* (non-Javadoc)
     * @see com.lyncode.xoai.dataprovider.data.AbstractIdentify#getRepositoryName()
     */
    @Override
    public String getRepositoryName() {
        return ConfigurationManager.getConfiguration().getString("proxy.name");
    }

    /* (non-Javadoc)
     * @see com.lyncode.xoai.dataprovider.data.AbstractIdentify#getAdminEmails()
     */
    @Override
    public List<String> getAdminEmails() {
        List<String> list = new ArrayList<String>();
        list.add(ConfigurationManager.getConfiguration().getString("proxy.admin.mail"));
        return list;
    }

    private String _baseUrl;

    /* (non-Javadoc)
     * @see com.lyncode.xoai.dataprovider.data.AbstractIdentify#getBaseUrl()
     */
    @Override
    public String getBaseUrl() {
        if (_baseUrl == null) {
            _baseUrl = _request.getRequestURL().toString().replace(_request.getPathInfo(), "");
        }
        return _baseUrl + _request.getPathInfo();
    }

    /* (non-Javadoc)
     * @see com.lyncode.xoai.dataprovider.data.AbstractIdentify#getEarliestDate()
     */
    @Override
    public Date getEarliestDate() {
        SolrServer server = SolrServerManager.getServer();
        SolrQuery query = new SolrQuery("*:*").addField(ProxyItem.DATE_FIELD).addSortField(ProxyItem.DATE_FIELD,
                ORDER.asc);
        try {
            SolrDocumentList results = server.query(query).getResults();
            if (results.getNumFound() > 0) {
                return (Date) results.get(0).get(ProxyItem.DATE_FIELD);
            }
        } catch (SolrServerException e) {
            log.debug(e.getMessage(), e);
        }
        return new Date();
    }

    /* (non-Javadoc)
     * @see com.lyncode.xoai.dataprovider.data.AbstractIdentify#getDeleteMethod()
     */
    @Override
    public DeleteMethod getDeleteMethod() {
        return DeleteMethod.PERSISTENT;
    }

    /* (non-Javadoc)
     * @see com.lyncode.xoai.dataprovider.data.AbstractIdentify#getGranularity()
     */
    @Override
    public Granularity getGranularity() {
        return Granularity.Second;
    }

}