ELRewriteTag


1   /*
2    * $Id: ELRewriteTag.java 54933 2004-10-16 17:04:52Z germuska $ 
3    *
4    * Copyright 1999-2004 The Apache Software Foundation.
5    * 
6    * Licensed under the Apache License, Version 2.0 (the "License");
7    * you may not use this file except in compliance with the License.
8    * You may obtain a copy of the License at
9    * 
10   *      http://www.apache.org/licenses/LICENSE-2.0
11   * 
12   * Unless required by applicable law or agreed to in writing, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  
19  package org.apache.strutsel.taglib.html;
20  
21  import org.apache.struts.taglib.html.RewriteTag;
22  import javax.servlet.jsp.JspException  ;
23  import org.apache.strutsel.taglib.utils.EvalHelper;
24  
25  /**
26   * Generate a URL-encoded URI as a string.
27   *<p>
28   * This class is a subclass of the class
29   * <code>org.apache.struts.taglib.html.RewriteTag</code> which provides most of
30   * the described functionality.  This subclass allows all attribute values to
31   * be specified as expressions utilizing the JavaServer Pages Standard Library
32   * expression language.
33   *
34   * @version $Rev: 54933 $
35   */
36  public class ELRewriteTag extends RewriteTag {
37  
38      /**
39       * Instance variable mapped to "action" tag attribute.
40       * (Mapping set in associated BeanInfo class.)
41       */
42      private String   actionExpr;
43      /**
44       * Instance variable mapped to "module" tag attribute.
45       * (Mapping set in associated BeanInfo class.)
46       */
47      private String   moduleExpr;
48      /**
49       * Instance variable mapped to "anchor" tag attribute.
50       * (Mapping set in associated BeanInfo class.)
51       */
52      private String   anchorExpr;
53      /**
54       * Instance variable mapped to "forward" tag attribute.
55       * (Mapping set in associated BeanInfo class.)
56       */
57      private String   forwardExpr;
58      /**
59       * Instance variable mapped to "href" tag attribute.
60       * (Mapping set in associated BeanInfo class.)
61       */
62      private String   hrefExpr;
63      /**
64       * Instance variable mapped to "name" tag attribute.
65       * (Mapping set in associated BeanInfo class.)
66       */
67      private String   nameExpr;
68      /**
69       * Instance variable mapped to "page" tag attribute.
70       * (Mapping set in associated BeanInfo class.)
71       */
72      private String   pageExpr;
73      /**
74       * Instance variable mapped to "paramId" tag attribute.
75       * (Mapping set in associated BeanInfo class.)
76       */
77      private String   paramIdExpr;
78      /**
79       * Instance variable mapped to "paramName" tag attribute.
80       * (Mapping set in associated BeanInfo class.)
81       */
82      private String   paramNameExpr;
83      /**
84       * Instance variable mapped to "paramProperty" tag attribute.
85       * (Mapping set in associated BeanInfo class.)
86       */
87      private String   paramPropertyExpr;
88      /**
89       * Instance variable mapped to "paramScope" tag attribute.
90       * (Mapping set in associated BeanInfo class.)
91       */
92      private String   paramScopeExpr;
93      /**
94       * Instance variable mapped to "property" tag attribute.
95       * (Mapping set in associated BeanInfo class.)
96       */
97      private String   propertyExpr;
98      /**
99       * Instance variable mapped to "scope" tag attribute.
100      * (Mapping set in associated BeanInfo class.)
101      */
102     private String   scopeExpr;
103     /**
104      * Instance variable mapped to "transaction" tag attribute.
105      * (Mapping set in associated BeanInfo class.)
106      */
107     private String   transactionExpr;
108     /**
109      * Instance variable mapped to "useLocalEncoding" tag attribute.
110      * (Mapping set in associated BeanInfo class.)
111      */
112     private String   useLocalEncodingExpr;
113 
114     /**
115      * Getter method for "action" tag attribute.
116      * (Mapping set in associated BeanInfo class.)
117      */
118     public String   getActionExpr() { return (actionExpr); }
119     /**
120      * Getter method for "module" tag attribute.
121      * (Mapping set in associated BeanInfo class.)
122      */
123     public String   getModuleExpr() { return (moduleExpr); }
124     /**
125      * Getter method for "anchor" tag attribute.
126      * (Mapping set in associated BeanInfo class.)
127      */
128     public String   getAnchorExpr() { return (anchorExpr); }
129     /**
130      * Getter method for "forward" tag attribute.
131      * (Mapping set in associated BeanInfo class.)
132      */
133     public String   getForwardExpr() { return (forwardExpr); }
134     /**
135      * Getter method for "href" tag attribute.
136      * (Mapping set in associated BeanInfo class.)
137      */
138     public String   getHrefExpr() { return (hrefExpr); }
139     /**
140      * Getter method for "name" tag attribute.
141      * (Mapping set in associated BeanInfo class.)
142      */
143     public String   getNameExpr() { return (nameExpr); }
144     /**
145      * Getter method for "page" tag attribute.
146      * (Mapping set in associated BeanInfo class.)
147      */
148     public String   getPageExpr() { return (pageExpr); }
149     /**
150      * Getter method for "paramId" tag attribute.
151      * (Mapping set in associated BeanInfo class.)
152      */
153     public String   getParamIdExpr() { return (paramIdExpr); }
154     /**
155      * Getter method for "paramName" tag attribute.
156      * (Mapping set in associated BeanInfo class.)
157      */
158     public String   getParamNameExpr() { return (paramNameExpr); }
159     /**
160      * Getter method for "paramProperty" tag attribute.
161      * (Mapping set in associated BeanInfo class.)
162      */
163     public String   getParamPropertyExpr() { return (paramPropertyExpr); }
164     /**
165      * Getter method for "paramScope" tag attribute.
166      * (Mapping set in associated BeanInfo class.)
167      */
168     public String   getParamScopeExpr() { return (paramScopeExpr); }
169     /**
170      * Getter method for "property" tag attribute.
171      * (Mapping set in associated BeanInfo class.)
172      */
173     public String   getPropertyExpr() { return (propertyExpr); }
174     /**
175      * Getter method for "scope" tag attribute.
176      * (Mapping set in associated BeanInfo class.)
177      */
178     public String   getScopeExpr() { return (scopeExpr); }
179     /**
180      * Getter method for "transaction" tag attribute.
181      * (Mapping set in associated BeanInfo class.)
182      */
183     public String   getTransactionExpr() { return (transactionExpr); }
184     /**
185      * Getter method for "useLocalEncoding" tag attribute.
186      * (Mapping set in associated BeanInfo class.)
187      */
188     public String   getUseLocalEncodingExpr() { return (useLocalEncodingExpr); }
189 
190     /**
191      * Setter method for "action" tag attribute.
192      * (Mapping set in associated BeanInfo class.)
193      */
194     public void setActionExpr(String   actionExpr) { this.actionExpr = actionExpr; }
195     /**
196      * Setter method for "module" tag attribute.
197      * (Mapping set in associated BeanInfo class.)
198      */
199     public void setModuleExpr(String   moduleExpr) { this.moduleExpr = moduleExpr; }
200     /**
201      * Setter method for "anchor" tag attribute.
202      * (Mapping set in associated BeanInfo class.)
203      */
204     public void setAnchorExpr(String   anchorExpr) { this.anchorExpr = anchorExpr; }
205     /**
206      * Setter method for "forward" tag attribute.
207      * (Mapping set in associated BeanInfo class.)
208      */
209     public void setForwardExpr(String   forwardExpr) { this.forwardExpr = forwardExpr; }
210     /**
211      * Setter method for "href" tag attribute.
212      * (Mapping set in associated BeanInfo class.)
213      */
214     public void setHrefExpr(String   hrefExpr) { this.hrefExpr = hrefExpr; }
215     /**
216      * Setter method for "name" tag attribute.
217      * (Mapping set in associated BeanInfo class.)
218      */
219     public void setNameExpr(String   nameExpr) { this.nameExpr = nameExpr; }
220     /**
221      * Setter method for "page" tag attribute.
222      * (Mapping set in associated BeanInfo class.)
223      */
224     public void setPageExpr(String   pageExpr) { this.pageExpr = pageExpr; }
225     /**
226      * Setter method for "paramId" tag attribute.
227      * (Mapping set in associated BeanInfo class.)
228      */
229     public void setParamIdExpr(String   paramIdExpr) { this.paramIdExpr = paramIdExpr; }
230     /**
231      * Setter method for "paramName" tag attribute.
232      * (Mapping set in associated BeanInfo class.)
233      */
234     public void setParamNameExpr(String   paramNameExpr) { this.paramNameExpr = paramNameExpr; }
235     /**
236      * Setter method for "paramProperty" tag attribute.
237      * (Mapping set in associated BeanInfo class.)
238      */
239     public void setParamPropertyExpr(String   paramPropertyExpr) { this.paramPropertyExpr = paramPropertyExpr; }
240     /**
241      * Setter method for "paramScope" tag attribute.
242      * (Mapping set in associated BeanInfo class.)
243      */
244     public void setParamScopeExpr(String   paramScopeExpr) { this.paramScopeExpr = paramScopeExpr; }
245     /**
246      * Setter method for "property" tag attribute.
247      * (Mapping set in associated BeanInfo class.)
248      */
249     public void setPropertyExpr(String   propertyExpr) { this.propertyExpr = propertyExpr; }
250     /**
251      * Setter method for "scope" tag attribute.
252      * (Mapping set in associated BeanInfo class.)
253      */
254     public void setScopeExpr(String   scopeExpr) { this.scopeExpr = scopeExpr; }
255     /**
256      * Setter method for "transaction" tag attribute.
257      * (Mapping set in associated BeanInfo class.)
258      */
259     public void setTransactionExpr(String   transactionExpr) { this.transactionExpr = transactionExpr; }
260     /**
261      * Setter method for "useLocalEncoding" tag attribute.
262      * (Mapping set in associated BeanInfo class.)
263      */
264     public void setUseLocalEncodingExpr(String   useLocalEncodingExpr) { this.useLocalEncodingExpr = useLocalEncodingExpr; }
265 
266     /**
267      * Resets attribute values for tag reuse.
268      */
269     public void release()
270     {
271         super.release();
272         setActionExpr(null);
273         setModuleExpr(null);
274         setAnchorExpr(null);
275         setForwardExpr(null);
276         setHrefExpr(null);
277         setNameExpr(null);
278         setPageExpr(null);
279         setParamIdExpr(null);
280         setParamNameExpr(null);
281         setParamPropertyExpr(null);
282         setParamScopeExpr(null);
283         setPropertyExpr(null);
284         setScopeExpr(null);
285         setTransactionExpr(null);
286         setUseLocalEncodingExpr(null);
287     }
288 
289     /**
290      * Process the start tag.
291      *
292      * @exception JspException if a JSP exception has occurred
293      */
294     public int doStartTag() throws JspException   {
295         evaluateExpressions();
296         return(super.doStartTag());
297     }
298 
299     /**
300      * Processes all attribute values which use the JSTL expression evaluation
301      * engine to determine their values.
302      *
303      * @exception JspException if a JSP exception has occurred
304      */
305     private void evaluateExpressions() throws JspException   {
306         String    string  = null;
307         Boolean   bool    = null;
308 
309         if ((string = EvalHelper.evalString("action", getActionExpr(),
310                                             this, pageContext)) != null)
311             setAction(string);
312 
313         if ((string = EvalHelper.evalString("module", getModuleExpr(),
314                                             this, pageContext)) != null)
315             setModule(string);
316 
317         if ((string = EvalHelper.evalString("anchor", getAnchorExpr(),
318                                             this, pageContext)) != null)
319             setAnchor(string);
320 
321         if ((string = EvalHelper.evalString("forward", getForwardExpr(),
322                                             this, pageContext)) != null)
323             setForward(string);
324 
325         if ((string = EvalHelper.evalString("href", getHrefExpr(),
326                                             this, pageContext)) != null)
327             setHref(string);
328 
329         if ((string = EvalHelper.evalString("name", getNameExpr(),
330                                             this, pageContext)) != null)
331             setName(string);
332 
333         if ((string = EvalHelper.evalString("page", getPageExpr(),
334                                             this, pageContext)) != null)
335             setPage(string);
336 
337         if ((string = EvalHelper.evalString("paramId", getParamIdExpr(),
338                                             this, pageContext)) != null)
339             setParamId(string);
340 
341         if ((string = EvalHelper.evalString("paramName", getParamNameExpr(),
342                                             this, pageContext)) != null)
343             setParamName(string);
344 
345         if ((string = EvalHelper.evalString("paramProperty", getParamPropertyExpr(),
346                                             this, pageContext)) != null)
347             setParamProperty(string);
348 
349         if ((string = EvalHelper.evalString("paramScope", getParamScopeExpr(),
350                                             this, pageContext)) != null)
351             setParamScope(string);
352 
353         if ((string = EvalHelper.evalString("property", getPropertyExpr(),
354                                             this, pageContext)) != null)
355             setProperty(string);
356 
357         if ((string = EvalHelper.evalString("scope", getScopeExpr(),
358                                             this, pageContext)) != null)
359             setScope(string);
360 
361         if ((bool = EvalHelper.evalBoolean("transaction", getTransactionExpr(),
362                                            this, pageContext)) != null)
363             setTransaction(bool.booleanValue());
364 
365         if ((bool = EvalHelper.evalBoolean("useLocalEncoding", getUseLocalEncodingExpr(),
366                                            this, pageContext)) != null)
367             setUseLocalEncoding(bool.booleanValue());
368     }
369 }
370
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