| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||||||
| CustomAction |
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| 3.0;3 |
| 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 org.apache.commons.logging.LogFactory; |
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| 20 | import org.apache.commons.scxml.SCXMLHelper; |
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| 21 | ||
| 22 | /** |
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| 23 | * A custom action is simply a tuple consisting of a namespace URI, |
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| 24 | * the local name for the custom action and the corresponding |
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| 25 | * {@link Action} class. |
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| 26 | * |
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| 27 | */ |
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| 28 | public class CustomAction { |
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| 29 | ||
| 30 | /** |
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| 31 | * Error logged while attempting to define a custom action |
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| 32 | * in a null or empty namespace. |
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| 33 | */ |
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| 34 | private static final String ERR_NO_NAMESPACE = |
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| 35 | "Cannot define a custom SCXML action with a null or empty namespace"; |
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| 36 | ||
| 37 | /** |
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| 38 | * The SCXML namespace, to which custom actions may not be added. |
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| 39 | */ |
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| 40 | private static final String NAMESPACE_SCXML = |
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| 41 | "http://www.w3.org/2005/07/scxml"; |
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| 42 | ||
| 43 | /** |
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| 44 | * Error logged while attempting to define a custom action |
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| 45 | * with the SCXML namespace. |
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| 46 | */ |
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| 47 | private static final String ERR_RESERVED_NAMESPACE = |
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| 48 | "Cannot define a custom SCXML action within the SCXML namespace '" |
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| 49 | + NAMESPACE_SCXML + "'"; |
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| 50 | ||
| 51 | /** |
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| 52 | * Error logged while attempting to define a custom action |
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| 53 | * in a null or empty local name. |
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| 54 | */ |
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| 55 | private static final String ERR_NO_LOCAL_NAME = |
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| 56 | "Cannot define a custom SCXML action with a null or empty local name"; |
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| 57 | ||
| 58 | /** |
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| 59 | * Error logged while attempting to define a custom action |
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| 60 | * which does not extend {@link Action}. |
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| 61 | */ |
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| 62 | private static final String ERR_NOT_AN_ACTION = |
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| 63 | "Custom SCXML action does not extend Action superclass"; |
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| 64 | ||
| 65 | /** |
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| 66 | * The namespace this custom action belongs to. |
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| 67 | */ |
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| 68 | private String namespaceURI; |
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| 69 | ||
| 70 | /** |
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| 71 | * The local name of the custom action. |
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| 72 | */ |
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| 73 | private String localName; |
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| 74 | ||
| 75 | /** |
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| 76 | * The implementation of this custom action. |
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| 77 | */ |
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| 78 | private Class actionClass; |
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| 79 | ||
| 80 | /** |
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| 81 | * The log for this custom action. |
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| 82 | */ |
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| 83 | private org.apache.commons.logging.Log log; |
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| 84 | ||
| 85 | /** |
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| 86 | * Constructor, if the namespace or local name is null or empty, |
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| 87 | * or if the implementation is not an {@link Action}, an |
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| 88 | * {@link IllegalArgumentException} is thrown. |
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| 89 | * |
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| 90 | * @param namespaceURI The namespace URI for this custom action. |
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| 91 | * @param localName The local name for this custom action. |
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| 92 | * @param actionClass The {@link Action} subclass implementing this |
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| 93 | * custom action. |
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| 94 | */ |
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| 95 | public CustomAction(final String namespaceURI, final String localName, |
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| 96 | 11 | final Class actionClass) { |
| 97 | 13 | this.log = LogFactory.getLog(CustomAction.class); |
| 98 | 11 | if (SCXMLHelper.isStringEmpty(namespaceURI)) { |
| 99 | 2 | log.error(ERR_NO_NAMESPACE); |
| 100 | 2 | throw new IllegalArgumentException(ERR_NO_NAMESPACE); |
| 101 | } |
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| 102 | 9 | if (namespaceURI.trim().equalsIgnoreCase(NAMESPACE_SCXML)) { |
| 103 | 1 | log.error(ERR_RESERVED_NAMESPACE); |
| 104 | 1 | throw new IllegalArgumentException(ERR_RESERVED_NAMESPACE); |
| 105 | } |
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| 106 | 8 | if (SCXMLHelper.isStringEmpty(localName)) { |
| 107 | 2 | log.error(ERR_NO_LOCAL_NAME); |
| 108 | 2 | throw new IllegalArgumentException(ERR_NO_LOCAL_NAME); |
| 109 | } |
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| 110 | 6 | if (actionClass == null |
| 111 | || !Action.class.isAssignableFrom(actionClass)) { |
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| 112 | 1 | log.error(ERR_NOT_AN_ACTION); |
| 113 | 1 | throw new IllegalArgumentException(ERR_NOT_AN_ACTION); |
| 114 | } |
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| 115 | 5 | this.namespaceURI = namespaceURI; |
| 116 | 5 | this.localName = localName; |
| 117 | 5 | this.actionClass = actionClass; |
| 118 | 5 | } |
| 119 | ||
| 120 | /** |
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| 121 | * Get this custom action's implementation. |
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| 122 | * |
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| 123 | * @return Returns the action class. |
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| 124 | */ |
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| 125 | public Class getActionClass() { |
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| 126 | 25 | return actionClass; |
| 127 | } |
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| 128 | ||
| 129 | /** |
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| 130 | * Get the local name for this custom action. |
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| 131 | * |
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| 132 | * @return Returns the local name. |
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| 133 | */ |
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| 134 | public String getLocalName() { |
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| 135 | 25 | return localName; |
| 136 | } |
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| 137 | ||
| 138 | /** |
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| 139 | * Get the namespace URI for this custom action. |
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| 140 | * |
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| 141 | * @return Returns the namespace URI. |
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| 142 | */ |
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| 143 | public String getNamespaceURI() { |
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| 144 | 25 | return namespaceURI; |
| 145 | } |
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| 146 | ||
| 147 | } |
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| 148 |