Bug 39346

The following scriplet does not compile: 

<i18n:bundle baseName="TextBundle/text" localeRef="userLocale" id="text" />

	<% 
	if(true) {%>
           <i18n:message bundleRef="text" key="my_key" id="value"/>
	<% } else { %>
	    <i18n:message bundleRef="text" key="my_key" id="value"/>
	    <% } %>

When launched, throws an exception: 

org.apache.jasper.JasperException: Unable to compile class for JSP

Generated servlet error:
C:\Fujitsu\InterstageBPM\taskmanager\tomcat\work\Catalina\localhost\ibpm\org\apache\jsp\jsp\TestJSP_jsp.java:120:
cannot resolve symbol
symbol  : variable value 
location: class org.apache.jsp.jsp.TestJSP_jsp
      value = (java.lang.String) _jspx_page_context.findAttribute("value");
      ^
1 error


In the servlet TestJSP_jsp.java, the corresponding code looks like


if(true) {
      //  i18n:message
 org.apache.taglibs.i18n.MessageTag _jspx_th_i18n_message_0 =      
(org.apache.taglibs.i18n.MessageTag)   
_jspx_tagPool_i18n_message_key_id_bundleRef_nobody.get(org.apache.taglibs.i18n.MessageTag.class);
      
_jspx_th_i18n_message_0.setPageContext(_jspx_page_context);_jspx_th_i18n_message_0.setParent(null);
    _jspx_th_i18n_message_0.setBundleRef("text");
      _jspx_th_i18n_message_0.setKey("my_key");
      _jspx_th_i18n_message_0.setId("value");
      int _jspx_eval_i18n_message_0 = _jspx_th_i18n_message_0.doStartTag();
      if (_jspx_th_i18n_message_0.doEndTag() ==
javax.servlet.jsp.tagext.Tag.SKIP_PAGE)
        return;
     
_jspx_tagPool_i18n_message_key_id_bundleRef_nobody.reuse(_jspx_th_i18n_message_0);

java.lang.String value = null;
      value = (java.lang.String) _jspx_page_context.findAttribute("value");
} else {
      org.apache.taglibs.i18n.MessageTag _jspx_th_i18n_message_1 =
(org.apache.taglibs.i18n.MessageTag)
_jspx_tagPool_i18n_message_key_id_bundleRef_nobody.get(org.apache.taglibs.i18n.MessageTag.class);
      _jspx_th_i18n_message_1.setPageContext(_jspx_page_context);
      _jspx_th_i18n_message_1.setParent(null);
      _jspx_th_i18n_message_1.setBundleRef("text");
      _jspx_th_i18n_message_1.setKey("my_key");
      _jspx_th_i18n_message_1.setId("value");
      int _jspx_eval_i18n_message_1 = _jspx_th_i18n_message_1.doStartTag();
      if (_jspx_th_i18n_message_1.doEndTag() ==
javax.servlet.jsp.tagext.Tag.SKIP_PAGE)
        return;
     
_jspx_tagPool_i18n_message_key_id_bundleRef_nobody.reuse(_jspx_th_i18n_message_1);
      
//HERE IS WHERE IT GOES WRONG! 

value = (java.lang.String) _jspx_page_context.findAttribute("value");
 	} 


In the else-part, the variable <code>value<code> is not declared, which is the
cause of compilation error. It looks like the tag in the if-part sees that there
is already a variable with the same name, and tries to reuse it. The problem is
aybe in the method <code>getVariableInfo TagData data)</code> in the
<code>MessageTEI</code> class: 


public VariableInfo [] getVariableInfo (TagData data)
    {
        String varName = data.getId();
        if ( varName == null ) {
            return new VariableInfo[] {};
        } else {
            return new VariableInfo [] {
                new VariableInfo(varName,
                                 "java.lang.String",
                                 true,
                                 VariableInfo.AT_END)
            };
        }
    }

One should probably investigate the scope of the variable, in case it was
already declared somewhere earlier in the page.