* $Header: /home/cvs/jakarta-slide/projector/src/java/org/apache/slide/projector/processor/query/PropertyQuery.java,v 1.3 2004/07/28 09:47:46 ib Exp $

* $Revision: 1.3 $

* $Date: 2004/07/28 09:47:46 $

*

* ====================================================================

*

* Copyright 2004 The Apache Software Foundation

*

* 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.

*

*/

* The Query class

*

*/

    private final static String EMPTY = "empty";

    private final static String URI = "uri";

    private final static String ARRAY = "array";

    private final static String MAP = "map";

    private static ResultDescriptor resultDescriptor = new ResultDescriptor(

            new StateDescriptor[] {

                StateDescriptor.OK_DESCRIPTOR,

                new StateDescriptor(EMPTY, new DefaultMessage("propertyQuery/state/empty"))},

            new ResultEntryDescriptor[] {

                new ResultEntryDescriptor(ARRAY, new ParameterMessage("propertyQuery/array"), ArrayValue.CONTENT_TYPE, false),

                new ResultEntryDescriptor(MAP, new ParameterMessage("propertyQuery/map"), MapValue.CONTENT_TYPE, false)

            });

    private static ParameterDescriptor []parameterDescriptors = new ParameterDescriptor[] {

        new ParameterDescriptor(URI, new DefaultMessage("propertyQuery/uri"), new URIValueDescriptor())

    };

    public Result process(Map parameter, Context context) throws Exception {

      ArrayValue properties = Projector.getRepository().getProperties((URIValue)parameter.get(URI), context.getCredentials());

        if ( properties.getArray().length == 0 ) return new Result(EMPTY);

        Result result= new Result(StateDescriptor.OK, ARRAY, properties);

        Map properyMap = new HashMap();

        for ( int i = 0; i < properties.getArray().length; i++ ) {

            properyMap.put(((MapValue)properties.getArray()[i]).getMap().get("name").toString(), ((MapValue)properties.getArray()[i]).getMap().get("value"));

        }

        result.addResultEntry(MAP, new MapValue(properyMap));

        return result;

    }

    public ParameterDescriptor[] getParameterDescriptors() {

        return parameterDescriptors;

    }

    public ResultDescriptor getResultDescriptor() {

        return resultDescriptor;

    }

}