bpel-api/src/main/java/org/apache/ode/bpel/extension/ExtensionOperation.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.apache.ode.bpel.extension;

import org.apache.ode.bpel.common.FaultException;
import org.w3c.dom.Element;

/**
 * This is the basis interface for implementations of
 * <code>&lt;extensionAssignOperation&gt;</code> and
 * <code>&lt;extensionActivity&gt;</code> nodes.
 * 
 * Implementations of this interface must provide a default constructor as they
 * are created using reflection.
 * 
 * @see AbstractExtensionBundle
 * 
 * @author Tammo van Lessen (University of Stuttgart)
 */
public interface ExtensionOperation {

	/**
	 * Provides the runtime implementation.
	 * 
	 * <strong>Note:</strong> This method MAY run concurrently. Since Xerces'
	 * DOM implementation is not thread-safe, please make sure to synchronize
	 * the access to <code>element</code> if necessary.
	 * 
	 * @param context
	 *            injected ExtensionContext
	 * @param element
	 *            the extension element (child of <code>extensionActivity</code>
	 *            or <code>extensionAssignOperation</code>
	 * @throws FaultException
	 */
	void run(Object context, Element element) throws FaultException;

}