core/src/main/java/org/apache/oozie/util/schema/ResourceResolver.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.oozie.util.schema;

import org.apache.commons.io.FilenameUtils;
import org.w3c.dom.ls.LSInput;
import org.w3c.dom.ls.LSResourceResolver;

import java.io.InputStream;

/**
 * Utility class to handle schema import and include statements
 */
public class ResourceResolver implements LSResourceResolver {

    public LSInput resolveResource(String type, String namespaceURI,
                                   String publicId, String systemId, String baseURI) {
        if (systemId == null) {
            systemId = FilenameUtils.getName(baseURI);
        }
        InputStream resourceAsStream = this.getClass().getClassLoader().getResourceAsStream(systemId);
        return new Input(publicId, systemId, resourceAsStream);
    }
}