| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
| Transition |
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| 1.2307692307692308;1.231 |
| 1 | /* |
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| 2 | * Licensed to the Apache Software Foundation (ASF) under one or more |
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| 3 | * contributor license agreements. See the NOTICE file distributed with |
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| 4 | * this work for additional information regarding copyright ownership. |
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| 5 | * The ASF licenses this file to You under the Apache License, Version 2.0 |
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| 6 | * (the "License"); you may not use this file except in compliance with |
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| 7 | * the License. You may obtain a copy of the License at |
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| 8 | * |
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| 9 | * http://www.apache.org/licenses/LICENSE-2.0 |
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| 10 | * |
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| 11 | * Unless required by applicable law or agreed to in writing, software |
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| 12 | * distributed under the License is distributed on an "AS IS" BASIS, |
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| 13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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| 14 | * See the License for the specific language governing permissions and |
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| 15 | * limitations under the License. |
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| 16 | */ |
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| 17 | package org.apache.commons.scxml.model; |
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| 18 | ||
| 19 | import java.util.Map; |
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| 20 | ||
| 21 | /** |
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| 22 | * The class in this SCXML object model that corresponds to the |
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| 23 | * <transition> SCXML element. Transition rules are triggered |
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| 24 | * by "events" and conditionalized via |
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| 25 | * "guard-conditions". |
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| 26 | * |
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| 27 | */ |
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| 28 | public class Transition extends Executable |
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| 29 | implements NamespacePrefixesHolder { |
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| 30 | ||
| 31 | /** |
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| 32 | * Serial version UID. |
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| 33 | */ |
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| 34 | private static final long serialVersionUID = 1L; |
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| 35 | ||
| 36 | /** |
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| 37 | * Property that specifies the trigger for this transition. |
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| 38 | */ |
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| 39 | private String event; |
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| 40 | ||
| 41 | /** |
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| 42 | * Optional guard condition. |
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| 43 | */ |
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| 44 | private String cond; |
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| 45 | ||
| 46 | /** |
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| 47 | * Optional property that specifies the new state or parallel |
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| 48 | * element to transition to. May be specified by reference or in-line. |
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| 49 | */ |
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| 50 | private TransitionTarget target; |
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| 51 | ||
| 52 | /** |
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| 53 | * The transition target ID (used by XML Digester only). |
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| 54 | */ |
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| 55 | private String next; |
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| 56 | ||
| 57 | /** |
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| 58 | * The path for this transition. |
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| 59 | * @see Path |
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| 60 | */ |
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| 61 | private Path path; |
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| 62 | ||
| 63 | /** |
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| 64 | * The current XML namespaces in the SCXML document for this action node, |
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| 65 | * preserved for deferred XPath evaluation. |
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| 66 | */ |
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| 67 | private Map namespaces; |
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| 68 | ||
| 69 | /** |
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| 70 | * Constructor. |
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| 71 | */ |
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| 72 | public Transition() { |
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| 73 | 258 | super(); |
| 74 | 258 | this.target = null; |
| 75 | 258 | this.path = null; |
| 76 | 258 | } |
| 77 | ||
| 78 | /** |
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| 79 | * Get the guard condition (may be null). |
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| 80 | * |
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| 81 | * @return Returns the cond. |
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| 82 | */ |
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| 83 | public final String getCond() { |
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| 84 | 242 | return cond; |
| 85 | } |
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| 86 | ||
| 87 | /** |
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| 88 | * Set the guard condition. |
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| 89 | * |
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| 90 | * @param cond The cond to set. |
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| 91 | */ |
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| 92 | public final void setCond(final String cond) { |
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| 93 | 88 | this.cond = cond; |
| 94 | 88 | } |
| 95 | ||
| 96 | /** |
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| 97 | * Get the event that will trigger this transition (pending |
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| 98 | * evaluation of the guard condition in favor). |
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| 99 | * |
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| 100 | * @return Returns the event. |
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| 101 | */ |
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| 102 | public final String getEvent() { |
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| 103 | 631 | return event; |
| 104 | } |
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| 105 | ||
| 106 | /** |
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| 107 | * Set the event that will trigger this transition (pending |
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| 108 | * evaluation of the guard condition in favor). |
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| 109 | * |
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| 110 | * @param event The event to set. |
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| 111 | */ |
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| 112 | public final void setEvent(final String event) { |
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| 113 | 187 | this.event = event; |
| 114 | 187 | } |
| 115 | ||
| 116 | /** |
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| 117 | * Get the XML namespaces at this action node in the SCXML document. |
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| 118 | * |
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| 119 | * @return Returns the map of namespaces. |
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| 120 | */ |
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| 121 | public final Map getNamespaces() { |
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| 122 | 78 | return namespaces; |
| 123 | } |
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| 124 | ||
| 125 | /** |
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| 126 | * Set the XML namespaces at this action node in the SCXML document. |
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| 127 | * |
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| 128 | * @param namespaces The document namespaces. |
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| 129 | */ |
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| 130 | public final void setNamespaces(final Map namespaces) { |
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| 131 | 240 | this.namespaces = namespaces; |
| 132 | 240 | } |
| 133 | ||
| 134 | /** |
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| 135 | * Get the transition target (may be null). |
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| 136 | * |
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| 137 | * @return Returns the target as specified in SCXML markup. |
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| 138 | * <p>Remarks: Is <code>null</code> for "stay" transitions. |
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| 139 | * Returns parent (the source node) for "self" transitions.</p> |
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| 140 | */ |
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| 141 | public final TransitionTarget getTarget() { |
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| 142 | 648 | return target; |
| 143 | } |
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| 144 | ||
| 145 | /** |
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| 146 | * Get the runtime transition target, which always resolves to |
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| 147 | * a TransitionTarget instance. |
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| 148 | * |
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| 149 | * @return Returns the actual target of a transition at runtime. |
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| 150 | * <p>Remarks: For both the "stay" and "self" |
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| 151 | * transitions it returns parent (the source node). This method should |
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| 152 | * never return <code>null</code>.</p> |
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| 153 | */ |
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| 154 | public final TransitionTarget getRuntimeTarget() { |
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| 155 | 360 | if (target != null) { |
| 156 | 355 | return target; |
| 157 | } |
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| 158 | 5 | return getParent(); |
| 159 | } |
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| 160 | ||
| 161 | ||
| 162 | /** |
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| 163 | * Set the transition target. |
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| 164 | * |
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| 165 | * @param target The target to set. |
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| 166 | */ |
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| 167 | public final void setTarget(final TransitionTarget target) { |
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| 168 | 246 | this.target = target; |
| 169 | 246 | } |
| 170 | ||
| 171 | /** |
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| 172 | * Get the ID of the transition target (may be null, if, for example, |
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| 173 | * the target is specified inline). |
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| 174 | * |
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| 175 | * @return String Returns the transition target ID |
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| 176 | * (used by SCXML Digester only). |
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| 177 | * @see #getTarget() |
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| 178 | */ |
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| 179 | public final String getNext() { |
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| 180 | 275 | return next; |
| 181 | } |
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| 182 | ||
| 183 | /** |
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| 184 | * Set the transition target by specifying its ID. |
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| 185 | * |
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| 186 | * @param next The the transition target ID (used by SCXML Digester only). |
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| 187 | * @see #setTarget(TransitionTarget) |
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| 188 | */ |
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| 189 | public final void setNext(final String next) { |
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| 190 | 243 | this.next = next; |
| 191 | 243 | } |
| 192 | ||
| 193 | /** |
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| 194 | * Get the path of this transiton. |
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| 195 | * |
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| 196 | * @see Path |
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| 197 | * @return Path returns the transition path |
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| 198 | */ |
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| 199 | public final Path getPath() { |
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| 200 | 346 | if (path == null) { |
| 201 | 92 | path = new Path(getParent(), getTarget()); |
| 202 | } |
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| 203 | 346 | return path; |
| 204 | } |
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| 205 | ||
| 206 | } |
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| 207 |