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Java > Open Source Codes > com > jcorporate > expresso > ext > taglib > ExConfigTag


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64
65 package com.jcorporate.expresso.ext.taglib;
66
67 import com.jcorporate.expresso.core.misc.ConfigManager;
68 import com.jcorporate.expresso.core.misc.ConfigurationException;
69 import com.jcorporate.expresso.core.misc.StringUtil;
70 import org.apache.log4j.Logger;
71 import org.apache.struts.taglib.bean.DefineTag;
72 import org.apache.struts.util.RequestUtils;
73
74 import javax.servlet.jsp.JspException JavaDoc;
75 import javax.servlet.jsp.PageContext JavaDoc;
76
77
78 /**
79  * Define a scripting variable based on the value(s) of the specified
80  * bean property.
81  *
82  * @author Shash Chatterjee
83  */
84 public class ExConfigTag extends DefineTag {
85     protected String JavaDoc db = "default";
86     protected String JavaDoc dbToUse = "default";
87
88     private static final Logger log = Logger.getLogger(ExConfigTag.class);
89
90     // --------------------------------------------------------- Public Methods
91 /**
92      * Retrieve the required property and expose it as a scripting variable.
93      *
94      * @return int as defined by the Taglib spec
95      * @throws JspException if a JSP exception has occurred
96      */
97     public int doStartTag()
98             throws JspException JavaDoc {
99
100         // Set the proper dbContext
101 dbToUse = db;
102
103         if (this.dbToUse.equals("")) {
104             this.dbToUse = "default";
105         }
106
107         return (SKIP_BODY);
108     }
109
110     public String JavaDoc getDb() {
111         return (this.dbToUse);
112     }
113
114     public void setDb(String JavaDoc newDb) {
115         this.db = newDb;
116     }
117
118     /**
119      * Retrieve the required property and expose it as a scripting variable.
120      *
121      * @return integer as per the JSP tag specification
122      * @throws JspException if a JSP exception has occurred
123      */
124     public int doEndTag() throws JspException JavaDoc {
125
126         // Retrieve the required property value
127 Object JavaDoc value = this.value;
128         if ((value == null) && (name != null)) {
129             value = RequestUtils.lookup(pageContext, name, property, scope);
130         }
131
132         if (value == null) {
133
134             // // Look up the requested value from ConfigManager
135 // value = ConfigManager.getProperty(dbToUse, property);
136 try {
137                 if ("images".equals(property)) {
138                     value = ConfigManager.getContext(dbToUse).getImages();
139                 } else if ("logDirectory".equals(property)) {
140                     value = ConfigManager.getConfig().getLogDirectory();
141                 } else if ("servletAPI".equals(property)) {
142                     value = ConfigManager.getConfig().getServletAPI();
143                 } else if ("userInfo".equals(property)) {
144                     value = ConfigManager.getClassHandler("userInfo");
145                 } else if ("description".equals(property)) {
146                     value = ConfigManager.getContext(dbToUse).getDescription();
147                 } else if ("startJobHandler".equals(property)) {
148                     boolean temp = ConfigManager.getContext(dbToUse).startJobHandler();
149                     value = (temp) ? "y" : "n";
150                 } else if ("showStackTrace".equals(property)) {
151                     boolean temp = ConfigManager.getContext(dbToUse).showStackTrace();
152                     value = (temp) ? "y" : "n";
153                 } else if ("mailDebug".equals(property)) {
154                     boolean temp = ConfigManager.getContext(dbToUse).mailDebug();
155                     value = (temp) ? "y" : "n";
156                 } else if ("language".equals(property)) {
157                     value = ConfigManager.getContext(dbToUse).getLanguage();
158                 } else if ("country".equals(property)) {
159                     value = ConfigManager.getContext(dbToUse).getCountry();
160                 } else if ("expressoDir".equals(property)) {
161                     value = ConfigManager.getContext(dbToUse).getExpressoDir();
162                 } else {
163                     value = ConfigManager.getContext(dbToUse).getCustomProperty(property);
164                 }
165             } catch (ConfigurationException ex) {
166                 log.error("Error getting configuration for db: " + dbToUse, ex);
167                 throw new JspException JavaDoc("Configuration error getting config information. Details in log");
168             }
169         }
170
171         if (value == null) {
172             JspException JavaDoc e = new JspException JavaDoc("Unable to find property '" +
173                     StringUtil.notNull(property) +
174                     "' in configuration for DB/Context '" +
175                     dbToUse + "'");
176             log.error("No value ever defined", e);
177             RequestUtils.saveException(pageContext, e);
178             throw e;
179         }
180
181         // Expose this value as a scripting variable
182 int inScope = PageContext.PAGE_SCOPE;
183         if ("request".equals(toScope)) {
184             inScope = PageContext.REQUEST_SCOPE;
185         } else if ("session".equals(toScope)) {
186             inScope = PageContext.SESSION_SCOPE;
187         } else if ("application".equals(toScope)) {
188             inScope = PageContext.APPLICATION_SCOPE;
189         }
190         pageContext.setAttribute(id, value, inScope);
191
192         // Continue processing this page
193 return (EVAL_PAGE);
194     }
195
196 }
197
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