com.esri.geoportal.commons.csw.client.impl.ProfilesLoader.java Source code

Introduction

Here is the source code for com.esri.geoportal.commons.csw.client.impl.ProfilesLoader.java

Source

/*
 * Copyright 2016 Esri, Inc.
 *
 * 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.esri.geoportal.commons.csw.client.impl;

import static com.esri.geoportal.commons.csw.client.impl.Constants.CONFIG_FOLDER_PATH;
import java.io.IOException;
import java.io.InputStream;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

/**
 * Profiles factory.
 */
public class ProfilesLoader {
    private final Logger LOG = LoggerFactory.getLogger(ProfilesLoader.class);
    private static final String CONFIG_FILE_PATH = CONFIG_FOLDER_PATH + "/CSWProfiles.xml";

    /**
     * Loads profiles.
     * @return profiles
     * @throws IOException if loading profiles from configuration fails
     * @throws ParserConfigurationException if unable to obtain XML parser
     * @throws SAXException if unable to parse XML document
     * @throws XPathExpressionException if invalid XPath expression
     */
    public Profiles load()
            throws IOException, ParserConfigurationException, SAXException, XPathExpressionException {
        LOG.info(String.format("Loading CSW profiles"));
        Profiles profiles = new Profiles();
        try (InputStream profilesXml = Thread.currentThread().getContextClassLoader()
                .getResourceAsStream(CONFIG_FILE_PATH);) {
            DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
            DocumentBuilder builder = builderFactory.newDocumentBuilder();

            Document profilesDom = builder.parse(new InputSource(profilesXml));

            XPathFactory xPathfactory = XPathFactory.newInstance();
            XPath xpath = xPathfactory.newXPath();

            NodeList profilesNodeList = (NodeList) xpath.evaluate("/CSWProfiles/Profile", profilesDom,
                    XPathConstants.NODESET);
            for (int pidx = 0; pidx < profilesNodeList.getLength(); pidx++) {
                Node profileNode = profilesNodeList.item(pidx);
                String id = StringUtils
                        .trimToEmpty((String) xpath.evaluate("ID", profileNode, XPathConstants.STRING));
                String name = StringUtils
                        .trimToEmpty((String) xpath.evaluate("Name", profileNode, XPathConstants.STRING));
                String namespace = StringUtils
                        .trimToEmpty((String) xpath.evaluate("CswNamespace", profileNode, XPathConstants.STRING));
                String description = StringUtils
                        .trimToEmpty((String) xpath.evaluate("Description", profileNode, XPathConstants.STRING));

                String getRecordsReqXslt = StringUtils.trimToEmpty((String) xpath
                        .evaluate("GetRecords/XSLTransformations/Request", profileNode, XPathConstants.STRING));
                String getRecordsRspXslt = StringUtils.trimToEmpty((String) xpath
                        .evaluate("GetRecords/XSLTransformations/Response", profileNode, XPathConstants.STRING));

                String getRecordByIdReqKVP = StringUtils.trimToEmpty(
                        (String) xpath.evaluate("GetRecordByID/RequestKVPs", profileNode, XPathConstants.STRING));
                String getRecordByIdRspXslt = StringUtils.trimToEmpty((String) xpath
                        .evaluate("GetRecordByID/XSLTransformations/Response", profileNode, XPathConstants.STRING));

                Profile prof = new Profile();
                prof.setId(id);
                prof.setName(name);
                prof.setDescription(description);
                prof.setGetRecordsReqXslt(getRecordsReqXslt);
                prof.setGetRecordsRspXslt(getRecordsRspXslt);
                prof.setKvp(getRecordByIdReqKVP);
                prof.setGetRecordByIdRspXslt(getRecordByIdRspXslt);

                profiles.add(prof);
            }
        }
        LOG.info(String.format("CSW profiles loaded."));
        return profiles;
    }
}