ReferenceUrlConnection.java

/*
 * Copyright 2011 Harald Wellmann
 *
 * 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 org.ops4j.pax.url.reference.internal;

import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.net.URLConnection;
import java.net.URLStreamHandler;

import org.ops4j.pax.url.reference.ReferenceInputStream;

/**
 * {@link URLStreamHandler} implementation for "reference:" protocol.
 * 
 * @author Harald Wellmann (harald.wellmann@gmx.de)
 * @since 1.3.5, Aug 5, 2011
 */
public class ReferenceUrlConnection extends URLConnection
{
    protected URL reference;

    public ReferenceUrlConnection( URL url )
    {
        super( url );
    }

    @Override
    public void connect() throws IOException
    {
        if( !connected )
        {
            reference = new Parser( url.getPath() ).getUrl();
        }

    }

    public boolean getDoInput()
    {
        return true;
    }

    public boolean getDoOutput()
    {
        return false;
    }

    public InputStream getInputStream() throws IOException
    {
        if( !connected )
        {
            connect();
        }

        return new ReferenceInputStream( reference );
    }
}