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/*
 * 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.ode.axis2.util;

import java.io.InputStream;
import java.net.URI;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.ode.axis2.hooks.ODEAxisService;
import org.xml.sax.InputSource;

public class Axis2UriResolver implements org.apache.ws.commons.schema.resolver.URIResolver {
    private static final Log LOG = LogFactory.getLog(ODEAxisService.class);

    public InputSource resolveEntity(String targetNamespace, String schemaLocation, String baseUri) {
        if (LOG.isDebugEnabled()) {
            LOG.debug("resolveEntity: targetNamespace=" + targetNamespace + " schemaLocation=" + schemaLocation
                      + " baseUri=" + baseUri);
        }
        InputStream is;
        try {
            URI base = new URI(baseUri);
            URI uri = base.resolve(schemaLocation);
            is = uri.toURL().openStream();
            if (is == null) {
                LOG.error("Exception resolving entity: schemaLocation=" + schemaLocation + " baseUri=" + baseUri);
                return null;
            }
            InputSource source = new InputSource(is);
            source.setSystemId(uri.toString());
            source.setPublicId(schemaLocation);
            return new InputSource(is);
        } catch (Exception e) {
            LOG.error("Exception resolving entity: schemaLocation=" + schemaLocation + " baseUri=" + baseUri, e);
            return null;
        }
    }
}