Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
InsertDefinitionModel |
|
| 1.5;1.5 |
1 | /* | |
2 | * $Id: InsertDefinitionModel.java 1058106 2011-01-12 12:22:58Z apetrelli $ | |
3 | * | |
4 | * Licensed to the Apache Software Foundation (ASF) under one | |
5 | * or more contributor license agreements. See the NOTICE file | |
6 | * distributed with this work for additional information | |
7 | * regarding copyright ownership. The ASF licenses this file | |
8 | * to you under the Apache License, Version 2.0 (the | |
9 | * "License"); you may not use this file except in compliance | |
10 | * with the License. You may obtain a copy of the License at | |
11 | * | |
12 | * http://www.apache.org/licenses/LICENSE-2.0 | |
13 | * | |
14 | * Unless required by applicable law or agreed to in writing, | |
15 | * software distributed under the License is distributed on an | |
16 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
17 | * KIND, either express or implied. See the License for the | |
18 | * specific language governing permissions and limitations | |
19 | * under the License. | |
20 | */ | |
21 | ||
22 | package org.apache.tiles.template; | |
23 | ||
24 | import java.io.IOException; | |
25 | ||
26 | import org.apache.tiles.Attribute; | |
27 | import org.apache.tiles.AttributeContext; | |
28 | import org.apache.tiles.TilesContainer; | |
29 | import org.apache.tiles.access.TilesAccess; | |
30 | import org.apache.tiles.autotag.core.runtime.ModelBody; | |
31 | import org.apache.tiles.autotag.core.runtime.annotation.Parameter; | |
32 | import org.apache.tiles.request.Request; | |
33 | ||
34 | /** | |
35 | * <p> | |
36 | * <strong>Insert a definition.</strong> | |
37 | * </p> | |
38 | * <p> | |
39 | * Insert a definition with the possibility to override and specify parameters | |
40 | * (called attributes). A definition can be seen as a (partially or totally) | |
41 | * filled template that can override or complete attribute values. | |
42 | * <code><tiles:insertDefinition></code> allows to define these attributes | |
43 | * and pass them to the inserted jsp page, called template. Attributes are | |
44 | * defined using nested tag <code><tiles:putAttribute></code> or | |
45 | * <code><tiles:putListAttribute></code>. | |
46 | * </p> | |
47 | * <p> | |
48 | * You must specify <code>name</code> tag attribute, for inserting a definition | |
49 | * from definitions factory. | |
50 | * </p> | |
51 | * <p> | |
52 | * <strong>Example : </strong> | |
53 | * </p> | |
54 | * | |
55 | * <pre> | |
56 | * <code> | |
57 | * <tiles:insertDefinition name=".my.tiles.defininition flush="true"> | |
58 | * <tiles:putAttribute name="title" value="My first page" /> | |
59 | * <tiles:putAttribute name="header" value="/common/header.jsp" /> | |
60 | * <tiles:putAttribute name="footer" value="/common/footer.jsp" /> | |
61 | * <tiles:putAttribute name="menu" value="/basic/menu.jsp" /> | |
62 | * <tiles:putAttribute name="body" value="/basic/helloBody.jsp" /> | |
63 | * </tiles:insertDefinition> | |
64 | * </code> | |
65 | * </pre> | |
66 | * | |
67 | * @version $Rev: 1058106 $ $Date: 2011-01-12 23:22:58 +1100 (Wed, 12 Jan 2011) $ | |
68 | * @since 2.2.0 | |
69 | */ | |
70 | 1 | public class InsertDefinitionModel { |
71 | ||
72 | /** | |
73 | * Executes the operation. | |
74 | * @param definitionName The name of the definition to render. | |
75 | * @param template If specified, this template will be used instead of the | |
76 | * one used by the definition. | |
77 | * @param templateType The type of the template attribute. | |
78 | * @param templateExpression The expression to evaluate to get the value of the template. | |
79 | * @param role A comma-separated list of roles. If present, the definition | |
80 | * will be rendered only if the current user belongs to one of the roles. | |
81 | * @param preparer The preparer to use to invoke before the definition is | |
82 | * rendered. If specified, it overrides the preparer specified in the | |
83 | * definition itself. | |
84 | * @param flush If <code>true</code>, the response will be flushed after the insert. | |
85 | * @param request The request. | |
86 | * @param modelBody The body. | |
87 | * @throws IOException If something goes wrong. | |
88 | * @since 2.2.0 | |
89 | */ | |
90 | public void execute( | |
91 | @Parameter(name = "name", required = true) String definitionName, | |
92 | String template, String templateType, String templateExpression, | |
93 | String role, String preparer, boolean flush, Request request, ModelBody modelBody) | |
94 | throws IOException { | |
95 | 1 | TilesContainer container = TilesAccess.getCurrentContainer(request); |
96 | 1 | container.startContext(request); |
97 | 1 | modelBody.evaluateWithoutWriting(); |
98 | 1 | container = TilesAccess.getCurrentContainer(request); |
99 | 1 | renderDefinition(container, definitionName, template, templateType, |
100 | templateExpression, role, preparer, flush, request); | |
101 | 1 | } |
102 | ||
103 | /** | |
104 | * Renders a definition. | |
105 | * | |
106 | * @param container The container to use. | |
107 | * @param definitionName The name of the definition to render. | |
108 | * @param template If specified, this template will be used instead of the | |
109 | * one used by the definition. | |
110 | * @param templateType The type of the template attribute. | |
111 | * @param templateExpression The expression to evaluate to get the value of the template. | |
112 | * @param role A comma-separated list of roles. If present, the definition | |
113 | * will be rendered only if the current user belongs to one of the roles. | |
114 | * @param preparer The preparer to use to invoke before the definition is | |
115 | * rendered. If specified, it overrides the preparer specified in the | |
116 | * definition itself. | |
117 | * @param flush If <code>true</code>, the response will be flushed after the insert. | |
118 | * @param request The request. | |
119 | * @throws IOException If something goes wrong. | |
120 | */ | |
121 | private void renderDefinition(TilesContainer container, | |
122 | String definitionName, String template, String templateType, | |
123 | String templateExpression, String role, String preparer, | |
124 | boolean flush, Request request) throws IOException { | |
125 | try { | |
126 | 1 | AttributeContext attributeContext = container |
127 | .getAttributeContext(request); | |
128 | 1 | Attribute templateAttribute = Attribute.createTemplateAttribute(template, |
129 | templateExpression, templateType, role); | |
130 | 1 | attributeContext.setPreparer(preparer); |
131 | 1 | attributeContext.setTemplateAttribute(templateAttribute); |
132 | 1 | container.render(definitionName, request); |
133 | 1 | if (flush) { |
134 | 0 | request.getWriter().flush(); |
135 | } | |
136 | } finally { | |
137 | 1 | container.endContext(request); |
138 | 1 | } |
139 | 1 | } |
140 | } |