AWResourceUrl.java

/*
    Copyright 1996-2008 Ariba, Inc.

    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.

    $Id: //ariba/platform/ui/aribaweb/ariba/ui/aribaweb/core/AWResourceUrl.java#5 $
*/

package ariba.ui.aribaweb.core;

import ariba.ui.aribaweb.util.AWUtil;
import java.util.Map;
import java.lang.reflect.Field;

public final class AWResourceUrl extends AWBindableElement
{
    private AWBinding _filename;

    // ** Thread Safety Considerations: although this is shared, the ivars are immutable.

    public void init (String tagName, Map bindingsHashtable)
    {
        _filename = (AWBinding)bindingsHashtable.remove(AWBindingNames.filename);
        super.init(tagName, bindingsHashtable);
    }

    public void renderResponse(AWRequestContext requestContext, AWComponent component)
    {
        String filename = _filename.stringValue(component);
        String resourceUrl = component.urlForResourceNamed(filename);
        if (resourceUrl == null) {
            resourceUrl = AWUtil.formatErrorUrl(filename);
        }
        requestContext.response().appendContent(resourceUrl);
    }

     protected Object getFieldValue (Field field)
 	     throws IllegalArgumentException, IllegalAccessException
    {
        try {
            return field.get(this);
        }
        catch (IllegalAccessException ex) {
            return super.getFieldValue(field);
        }
    }
}