| /* |
| * 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.jacob.soup; |
| |
| import java.io.PrintStream; |
| |
| /** |
| * The soup, the reactive "broth" that underlies the JACOB system. The {@link ExecutionQueue} |
| * implementation is responsible for implementing the JACOB reactive rules and |
| * maintaining the state of the reactive broth. |
| * |
| * @author Maciej Szefler <a href="mailto:mbs@fivesight.com">mbs</a> |
| */ |
| public interface ExecutionQueue { |
| |
| /** |
| * Are there any reactions that can be executed in the broth? |
| * |
| * @return <code>true</code> if there are "enabled" reactions |
| */ |
| boolean hasReactions(); |
| |
| /** |
| * Add a continuation to the broth. This operation is sometimes |
| * referred to as an "injection"; it can be used to inject into the |
| * broth the "original" continuation. |
| * @param continuation the {@link Continuation} to add to the broth |
| */ |
| public void enqueueReaction(Continuation continuation); |
| |
| public Continuation dequeueReaction(); |
| |
| public void add(CommChannel channel); |
| |
| public void add(CommGroup group); |
| |
| public String createExport(CommChannel channel); |
| |
| public CommChannel consumeExport(String exportId); |
| |
| public int cycle(); |
| |
| public void flush(); |
| |
| public void setClassLoader(ClassLoader classLoader); |
| |
| public void setReplacementMap(ReplacementMap replacementMap); |
| |
| public boolean isComplete(); |
| |
| public void dumpState(PrintStream err); |
| |
| } |