/**
 * Copyright (C) 2010 Orbeon, Inc.
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the
 * GNU Lesser General Public License as published by the Free Software Foundation; either version
 * 2.1 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Lesser General Public License for more details.
 *
 * The full text of the license is available at http://www.gnu.org/copyleft/lesser.html
 */
package org.orbeon.oxf.processor.xmldb;

import org.orbeon.oxf.pipeline.api.PipelineContext;
import org.orbeon.oxf.xml.XMLReceiver;
import org.orbeon.oxf.processor.*;
import org.orbeon.oxf.xml.XMLReceiverAdapter;

/**
 * xmldb:query.
 */
public class XMLDBQueryProcessor extends XMLDBProcessor {

    public XMLDBQueryProcessor() {
        addInputInfo(new ProcessorInputOutputInfo(INPUT_DATASOURCE, XMLDB_DATASOURCE_URI));
        addInputInfo(new ProcessorInputOutputInfo(INPUT_QUERY, XMLDB_QUERY_URI));
//        addOutputInfo(new ProcessorInputOutputInfo(OUTPUT_DATA));
    }

    /**
     * Case where an XML response must be generated.
     */
    @Override
    public ProcessorOutput createOutput(String name) {
        final ProcessorOutput output = new ProcessorOutputImpl(XMLDBQueryProcessor.this, name) {
            public void readImpl(PipelineContext pipelineContext, XMLReceiver xmlReceiver) {
                executeOperation(pipelineContext, xmlReceiver);
            }
        };
        addOutput(name, output);
        return output;
    }

    /**
     * Case where there is no data output.
     */
    @Override
    public void start(PipelineContext pipelineContext) {
        executeOperation(pipelineContext, new XMLReceiverAdapter());
    }
}
