/*
 * Copyright 2007 Andrew Wills
 *
 * 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.danann.cernunnos.xml;

import org.dom4j.Node;

import org.danann.cernunnos.AttributePhrase;
import org.danann.cernunnos.Attributes;
import org.danann.cernunnos.EntityConfig;
import org.danann.cernunnos.Formula;
import org.danann.cernunnos.Phrase;
import org.danann.cernunnos.Reagent;
import org.danann.cernunnos.ReagentType;
import org.danann.cernunnos.SimpleFormula;
import org.danann.cernunnos.SimpleReagent;
import org.danann.cernunnos.Task;
import org.danann.cernunnos.TaskRequest;
import org.danann.cernunnos.TaskResponse;

public class DeleteNodeTask implements Task {

	// Instance Members.
	private Phrase node;

	/*
	 * Public API.
	 */
	
	public static final Reagent NODE = new SimpleReagent("NODE", "@node", ReagentType.PHRASE, Node.class,
							"Optional node to be deleted.  If not provided, the value of the "
							+ "'Attributes.NODE' request attribute will be used.", 
							new AttributePhrase(Attributes.NODE));

	public Formula getFormula() {
		Reagent[] reagents = new Reagent[] {NODE};
		final Formula rslt = new SimpleFormula(DeleteNodeTask.class, reagents);
		return rslt;
	}

	public void init(EntityConfig config) {

		// Instance Members.
		this.node = (Phrase) config.getValue(NODE); 
		
	}

	public void perform(TaskRequest req, TaskResponse res) {
		
		try {
			Node n = (Node) node.evaluate(req, res);
			n.getParent().remove(n);
		} catch (Throwable t) {
			String msg = "Unable to delete the specified node.";
			throw new RuntimeException(msg, t);
		}
				
	}
	
}
@@ -1952,18 +1952,8 @@
 %09%09%0D%0A
-%09%09try %7B%0D%0A%09
 %09%09No
@@ -1994,17 +1994,16 @@
 es);%0D%0A%09%09
-%09
 n.getPar
@@ -2024,137 +2024,8 @@
 );%0D%0A
-%09%09%7D catch (Throwable t) %7B%0D%0A%09%09%09String msg = %22Unable to delete the specified node.%22;%0D%0A%09%09%09throw new RuntimeException(msg, t);%0D%0A%09%09%7D%0D%0A
 %09%09%09%09

Removed try/catch block because there are no checked exceptions in the code that implements this task.