001/**
002 * Copyright 2005-2016 The Kuali Foundation
003 *
004 * Licensed under the Educational Community License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 * http://www.opensource.org/licenses/ecl2.php
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.kuali.rice.ken.util;
017
018import java.io.IOException;
019import java.io.StringReader;
020
021import org.kuali.rice.ken.bo.NotificationContentTypeBo;
022import org.kuali.rice.ken.service.NotificationContentTypeService;
023import org.xml.sax.EntityResolver;
024import org.xml.sax.InputSource;
025import org.xml.sax.SAXException;
026
027/**
028 * Entity resolver that resolves content type XSD resources to XSDs define in
029 * the respective content type's NotificationContentType record
030 * @author Kuali Rice Team (rice.collab@kuali.org)
031 */
032public class ContentTypeEntityResolver extends ContentTypeResourceResolver implements EntityResolver {
033    /**
034     * Constructs a ContentTypeEntityResolver.java.
035     * @param notificationContentTypeService
036     */
037    public ContentTypeEntityResolver(NotificationContentTypeService notificationContentTypeService) {
038        super(notificationContentTypeService);
039    }
040
041    /**
042     * @see org.xml.sax.EntityResolver#resolveEntity(java.lang.String, java.lang.String)
043     */
044    public InputSource resolveEntity(String publicId, String systemId) throws SAXException, IOException {
045        LOG.debug("Resolving '" + publicId + "' / '" + systemId + "'");
046        if (!systemId.startsWith(CONTENT_TYPE_PREFIX)) {
047            LOG.warn("Cannot resolve non-ContentType resources");
048            return null;
049        }
050        NotificationContentTypeBo notificationContentType = resolveContentType(systemId);
051        if (notificationContentType == null) {
052            LOG.error("Unable to resolve system id '" + systemId + "' locally...delegating to default resolution strategy.");
053            return null;
054        }
055        LOG.debug("Resolved '" + systemId + "' to " + notificationContentType.getXsd());
056        return new InputSource(new StringReader(notificationContentType.getXsd()));
057    }
058
059    /**
060     * @see java.lang.Object#toString()
061     */
062    public String toString() {
063        return "[ContentTypeEntityResolver]";
064    }
065}