Hello
I think there is a serious bug in the jsp compiler from tomcat 4.1.10.
The compiler creates wrong code for nested variables. Here an example
that works with 4.1.9 and does not with 4.1.10
JSP
---
<%@ taglib uri="/misc" prefix="misc" %>
<html><head><title>Title</title></head><body>
<misc:test id="t">
<%= t %>
</misc:test>
</body></html>
TLD
---
<tag>
<name>test</name>
<tag-class>TestTag</tag-class>
<body-content>JSP</body-content>
<variable>
<name-from-attribute>id</name-from-attribute>
<variable-class>java.lang.String</variable-class>
<declare>true</declare>
<scope>NESTED</scope>
</variable>
<attribute>
<name>id</name>
<required>true</required>
<rtexprvalue>true</rtexprvalue>
</attribute>
</tag>
CODE
----
public class TestTag extends TagSupport {
private String id;
public TestTag() {
init();
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public void release() {
super.release();
init();
}
private void init() {
id = null;
}
public int doStartTag() throws JspException {
pageContext.setAttribute(getId(), "a short test string", PageContext.PAGE_SCOPE);
return (EVAL_BODY_INCLUDE);
}
Compiled JSP
------------
Here you can see what's wrong. The assignment for t is on the wrong
position
if (_jspx_eval_misc_test_0 != javax.servlet.jsp.tagext.Tag.SKIP_BODY) {
===> java.lang.String t = null;
do {
out.write("\r\n");
===> out.print( t );
out.write("\r\n");
int evalDoAfterBody = _jspx_th_misc_test_0.doAfterBody();
===> t = (java.lang.String) pageContext.findAttribute("t");
if (evalDoAfterBody != javax.servlet.jsp.tagext.BodyTag.EVAL_BODY_AGAIN)
break;
} while (true);
}
Regards
Ralph
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