001    package org.apache.maven.model.building;
002    
003    /*
004     * Licensed to the Apache Software Foundation (ASF) under one
005     * or more contributor license agreements.  See the NOTICE file
006     * distributed with this work for additional information
007     * regarding copyright ownership.  The ASF licenses this file
008     * to you under the Apache License, Version 2.0 (the
009     * "License"); you may not use this file except in compliance
010     * with the License.  You may obtain a copy of the License at
011     *
012     *   http://www.apache.org/licenses/LICENSE-2.0
013     *
014     * Unless required by applicable law or agreed to in writing,
015     * software distributed under the License is distributed on an
016     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017     * KIND, either express or implied.  See the License for the
018     * specific language governing permissions and limitations
019     * under the License.
020     */
021    
022    import java.io.IOException;
023    import java.io.InputStream;
024    import java.net.URL;
025    
026    /**
027     * Wraps an ordinary {@link URL} as a model source.
028     * 
029     * @author Benjamin Bentmann
030     */
031    public class UrlModelSource
032        implements ModelSource
033    {
034    
035        private URL pomUrl;
036    
037        /**
038         * Creates a new model source backed by the specified URL.
039         * 
040         * @param pomUrl The POM file, must not be {@code null}.
041         */
042        public UrlModelSource( URL pomUrl )
043        {
044            if ( pomUrl == null )
045            {
046                throw new IllegalArgumentException( "no POM URL specified" );
047            }
048            this.pomUrl = pomUrl;
049        }
050    
051        public InputStream getInputStream()
052            throws IOException
053        {
054            return pomUrl.openStream();
055        }
056    
057        public String getLocation()
058        {
059            return pomUrl.toString();
060        }
061    
062        /**
063         * Gets the POM URL of this model source.
064         * 
065         * @return The underlying POM URL, never {@code null}.
066         */
067        public URL getPomUrl()
068        {
069            return pomUrl;
070        }
071    
072        @Override
073        public String toString()
074        {
075            return getLocation();
076        }
077    
078    }