[JELLY-165] CatchTag closest from java tryCatch block (with expected exceptions list)

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.0-beta-5
• Component/s: core / taglib.core

Environment

JDK1.4_02 Windows XP Redhat AS 2.1

• Assignee: Unassigned
• Reporter: Marc DeXeT
• Created: 19/Nov/04 09:50
• Updated: 12/Nov/08 10:33

Description

The actual CatchTag doesn't distinct kind of exception.
<catch var="e">
<doTag/>
</cacth>
<if test="${! empty(e)}">
<process/>
</if>

try {
doTag();
} catch (Throwable t) {
process ();
}

It above all doesn't allow tryCatch nesting.

Improvements are following

1) LIST :
This Tag implements expected exception list. If an unexpected exception is thrown, tag throws it upper.
So it's possible to get
try {
try {
try

{ process(); }

catch( exceptionA lower}

{ doLower(); }

} catch( exceptionB middle )

{ doMidlle(); }

} catch( exceptionC upper) {
doUpper();
}

2) Get REAL exception

As improvement, it implements too dissect exception stack to get the first not Jelly exception and put to context this one.

3) Respect exception class parenthood. A assignable exception will be catched if her ancestor is in excpetion list.

See unit test for more details.

Issue Links

• is blocked by: JELLY-286 Various fixes for JIRA bugs