src/test/java/org/apache/commons/scxml2/invoke/invoker-05.xml

<?xml version="1.0"?>
<!--
 * 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
 *
 *     https://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.
-->
<!-- Test for REC-scxml-20150901, 3.13: Invoke handlers must be executed *after* completing a macrostrep,
     for which first all internal events must have been processed.
-->
<scxml xmlns="http://www.w3.org/2005/07/scxml" version="1.0" datamodel="jexl">
    <datamodel>
        <data id="var1" expr="0"/>
    </datamodel>
    <state id="start">
        <onentry>
            <!-- dummy internal event to force the next before.invoke to be not the first -->
            <raise event="dummy"/>
            <!-- Trigger an update of the param value: must be evaluated *before* executing invoke.
                 This is a second internal event, to validate *all* internal events are processed first
            -->
            <raise event="before.invoke"/>
        </onentry>
        <invoke>
            <param name="var1" expr="var1"/>
            <content>
                <scxml version="1.0" datamodel="jexl">
                    <datamodel>
                        <data id="var1" expr="0"/>
                    </datamodel>
                    <state id="invoked">
                        <transition cond="var1==1" target="done">
                            <!-- param val1 was updated through internal event before executing invoke -->
                            <send target="#_parent" event="success"/>
                        </transition>
                        <transition target="done">
                            <send target="#_parent" event="fail"/>
                        </transition>
                    </state>
                    <final id="done"/>
                </scxml>
            </content>
        </invoke>
        <transition event="before.invoke">
            <!-- all internal events like this one must be processed before completing the macrostep, only thereafter
                 the invoke may be executed
            -->
            <assign location="var1" expr="1"/>
        </transition>
        <transition event="fail" target="fail"/>
        <transition event="success" target="success"/>
    </state>
    <final id="fail"/>
    <final id="success"/>
</scxml>