/* 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.activiti.engine.impl.interceptor;
import org.activiti.engine.impl.delegate.DelegateInvocation;
/**
* Interceptor responsible for handling calls to 'user code'. User code
* represents external Java code (e.g. services and listeners) invoked by
* activiti. The following is a list of classes that represent user code:
* <ul>
* <li>{@link org.activiti.engine.delegate.JavaDelegate}</li>
* <li>{@link org.activiti.engine.delegate.ExecutionListener}</li>
* <li>{@link org.activiti.engine.delegate.Expression}</li>
* <li>{@link org.activiti.engine.delegate.TaskListener}</li>
* </ul>
*
* The interceptor is passed in an instance of {@link DelegateInvocation}.
* Implementations are responsible for calling
* {@link DelegateInvocation#proceed()}.
*
* @author Daniel Meyer
*/
public interface DelegateInterceptor {
public void handleInvocation(DelegateInvocation invocation) throws Exception;
}