de.ingrid.interfaces.csw.tools.IdfUtils.java Source code

Introduction

Here is the source code for de.ingrid.interfaces.csw.tools.IdfUtils.java

Source

/*
 * **************************************************-
 * ingrid-interface-csw
 * ==================================================
 * Copyright (C) 2014 - 2016 wemove digital solutions GmbH
 * ==================================================
 * Licensed under the EUPL, Version 1.1 or  as soon they will be
 * approved by the European Commission - subsequent versions of the
 * EUPL (the "Licence");
 * 
 * You may not use this work except in compliance with the Licence.
 * You may obtain a copy of the Licence at:
 * 
 * http://ec.europa.eu/idabc/eupl5
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the Licence is distributed on an "AS IS" basis,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the Licence for the specific language governing permissions and
 * limitations under the Licence.
 * **************************************************#
 */
/*
 * Copyright (c) 2012 wemove digital solutions. All rights reserved.
 */
package de.ingrid.interfaces.csw.tools;

import java.io.IOException;
import java.io.Serializable;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.w3c.dom.Document;

import de.ingrid.utils.dsc.Record;
import de.ingrid.utils.idf.IdfTool;
import de.ingrid.utils.xml.IDFNamespaceContext;
import de.ingrid.utils.xpath.XPathUtils;

public class IdfUtils {

    private static final String ID_XPATH = "idf:html/idf:body/idf:idfMdMetadata/gmd:fileIdentifier/gco:CharacterString";

    final protected static Log log = LogFactory.getLog(IdfUtils.class);

    static final XPathUtils XPATH = new XPathUtils(new IDFNamespaceContext());

    /**
     * Extract the idf document from the given record. Throws an exception
     * if there is not idf content.
     * @param record
     * @return Document
     * @throws Exception
     */
    public static Document getIdfDocument(Record record) throws Exception {
        String content = IdfTool.getIdfDataFromRecord(record);
        if (content != null) {
            try {
                return StringUtils.stringToDocument(content);
            } catch (Throwable t) {
                log.error("Error transforming record to DOM: " + content, t);
                throw new Exception(t);
            }
        } else {
            throw new IOException("Document contains no IDF data.");
        }
    }

    /**
     * Extract the id from the idf document.
     * @param document
     * @return Serializable
     * @throws Exception
     */
    public static Serializable getRecordId(Document document) throws Exception {
        Serializable id = XPATH.getString(document, ID_XPATH);
        return id;
    }

    /**
     * Extract the id from the idf content of the given record. Throws an exception
     * if there is not idf content.
     * @param record
     * @return Serializable
     * @throws Exception
     */
    public static Serializable getRecordId(Record record) throws Exception {
        Document doc = getIdfDocument(record);
        return getRecordId(doc);
    }
}