1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.scxml2.env.xpath;
18
19 import java.util.Map;
20
21 import org.apache.commons.jxpath.ExpressionContext;
22 import org.apache.commons.jxpath.Variables;
23 import org.apache.commons.scxml2.SCXMLSystemContext;
24 import org.apache.commons.scxml2.Status;
25
26 /**
27 * Commons JXPath custom extension function providing the SCXML In() predicate
28 */
29 public class XPathFunctions {
30
31 /**
32 * Provides the SCXML standard In() predicate for SCXML documents.
33 * @param expressionContext The context currently in use for evaluation
34 * @param state The State ID to compare with
35 * @return true if this state is currently active
36 */
37 @SuppressWarnings("unchecked")
38 public static boolean In(ExpressionContext expressionContext, String state) {
39 Variables variables = expressionContext.getJXPathContext().getVariables();
40 Map<String,Object> platformVariables = (Map<String, Object>)variables.getVariable(SCXMLSystemContext.X_KEY);
41 return ((Status)platformVariables.get(SCXMLSystemContext.STATUS_KEY)).isInState(state);
42 }
43 }