| /* |
| * 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.commons.scxml2.env.groovy; |
| |
| import groovy.lang.Closure; |
| |
| import java.io.IOException; |
| import java.io.ObjectInputStream; |
| import java.io.ObjectOutputStream; |
| import java.util.Iterator; |
| import java.util.Map; |
| |
| import org.apache.commons.logging.Log; |
| import org.apache.commons.logging.LogFactory; |
| import org.apache.commons.scxml2.Context; |
| import org.apache.commons.scxml2.SCInstanceObjectInputStream; |
| import org.apache.commons.scxml2.env.SimpleContext; |
| |
| /** |
| * Groovy Context implementation for Commons SCXML. |
| */ |
| public class GroovyContext extends SimpleContext { |
| |
| private static final long serialVersionUID = 1L; |
| |
| private static final Log log = LogFactory.getLog(GroovyContext.class); |
| |
| private String scriptBaseClass; |
| private GroovyEvaluator evaluator; |
| private GroovyContextBinding binding; |
| private Map<String, Object> vars; |
| |
| GroovyContextBinding getBinding() { |
| if (binding == null) { |
| binding = new GroovyContextBinding(this); |
| } |
| return binding; |
| } |
| |
| /** |
| * Constructor. |
| */ |
| public GroovyContext() { |
| } |
| |
| /** |
| * Constructor with initial vars. |
| * |
| * @param parent The parent context. |
| * @param initialVars The initial set of variables. |
| * @param evaluator The groovy evaluator |
| */ |
| public GroovyContext(final Context parent, final Map<String, Object> initialVars, GroovyEvaluator evaluator) { |
| super(parent, initialVars); |
| this.evaluator = evaluator; |
| } |
| |
| /** |
| * Constructor with parent context. |
| * |
| * @param parent The parent context. |
| * @param evaluator The groovy evaluator |
| */ |
| public GroovyContext(final Context parent, GroovyEvaluator evaluator) { |
| super(parent); |
| this.evaluator = evaluator; |
| } |
| |
| protected GroovyEvaluator getGroovyEvaluator() { |
| return evaluator; |
| } |
| |
| protected void setGroovyEvaluator(GroovyEvaluator evaluator) { |
| this.evaluator = evaluator; |
| } |
| |
| @Override |
| public Map<String, Object> getVars() { |
| return vars; |
| } |
| |
| @Override |
| protected void setVars(final Map<String, Object> vars) { |
| this.vars = vars; |
| } |
| |
| protected void setScriptBaseClass(String scriptBaseClass) { |
| this.scriptBaseClass = scriptBaseClass; |
| } |
| |
| protected String getScriptBaseClass() { |
| if (scriptBaseClass != null) { |
| return scriptBaseClass; |
| } |
| if (getParent() instanceof GroovyContext) { |
| return ((GroovyContext)getParent()).getScriptBaseClass(); |
| } |
| return null; |
| } |
| |
| private void writeObject(ObjectOutputStream out) throws IOException { |
| boolean closureErased = false; |
| if (vars != null) { |
| Iterator<Map.Entry<String, Object>> iterator = getVars().entrySet().iterator(); |
| while (iterator.hasNext()) { |
| Map.Entry<String, Object> entry = iterator.next(); |
| if (entry.getValue() != null && entry.getValue() instanceof Closure) { |
| iterator.remove(); |
| closureErased = true; |
| } |
| } |
| if (closureErased) { |
| log.warn("Encountered and removed Groovy Closure(s) in the GroovyContext during serialization: these are not supported for (de)serialization"); |
| } |
| } |
| out.writeObject(this.scriptBaseClass); |
| out.writeObject(this.evaluator); |
| out.writeObject(this.binding); |
| out.writeObject(this.vars); |
| } |
| |
| @SuppressWarnings("unchecked") |
| private void readObject(ObjectInputStream in) throws IOException,ClassNotFoundException { |
| this.scriptBaseClass = (String)in.readObject(); |
| this.evaluator = (GroovyEvaluator)in.readObject(); |
| this.binding = (GroovyContextBinding)in.readObject(); |
| SCInstanceObjectInputStream.ClassResolver currentResolver = null; |
| try { |
| if (evaluator != null && in instanceof SCInstanceObjectInputStream) { |
| currentResolver = ((SCInstanceObjectInputStream)in).setClassResolver(osc -> Class.forName(osc.getName(), true, evaluator.getGroovyClassLoader())); |
| } |
| this.vars = (Map<String, Object>)in.readObject(); |
| } |
| finally { |
| if (in instanceof SCInstanceObjectInputStream) { |
| ((SCInstanceObjectInputStream)in).setClassResolver(currentResolver); |
| } |
| } |
| } |
| } |