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JET Exceptions and Exception Handling [message #41877]

Wed, 13 February 2008 21:16

Eclipse User

Originally posted by: pankaj.surti.accenture.com

Hi All,

I want to know the following things:

- Does JET internals throw back exceptions for any XPATH?

- Is there any Exception Handling tips for the JET template?

Thanks,
-Pankaj.

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Re: JET Exceptions and Exception Handling [message #41916 is a reply to message #41877]

Thu, 14 February 2008 13:52

Paul Elder

Messages: 849
Registered: July 2009

Senior Member

Pankaj:

XPath engine throws XPathRuntimeException, which are derived from
RuntimeException.

All JET tags are wrapped in safe handlers that convert all but the most
agregious Errors into context log entries and allow the template to continue
execution.

For embedded Java code, there is no special exception handling. If you call
a method that throws a checked exception, you have to include try/catch
blocks to handle it.

If you can describe a particular situation, I may be able to provide more
specific suggestions.

Paul

"pankaj" <pankaj.surti@accenture.com> wrote in message
news:129e31aa0214d216eccb194bd8cfca6b$1@www.eclipse.org...
> Hi All,
>
> I want to know the following things:
>
> - Does JET internals throw back exceptions for any XPATH?
>
> - Is there any Exception Handling tips for the JET template?
>
> Thanks,
> -Pankaj.
>

Report message to a moderator

Re: JET Exceptions and Exception Handling [message #42235 is a reply to message #41916]

Tue, 26 February 2008 20:36

Roshan S.

Messages: 125
Registered: July 2009

Senior Member

Hi,

In my template I use the following <c:if test="$var::VarClass">

and after I run, although my generation creates the correct output when I
look at my log file I have the following error. Is this a bug? I got the
test code from the FAQs:

http://wiki.eclipse.org/JET_FAQ_How_do_I_test_for_the_type/E Class_of_an_element_in_XPath%3F

Is there a way I can catch this exception because they are all thrown at
the end to the IProgressMonitor I pass into my transformation and I never
get a clean run.

org.eclipse.jet.taglib.JET2TagException: Unrecognized token: ::
at
org.eclipse.jet.XPathContextExtender.resolveAsObject(XPathCo ntextExtender.java:448)
at
org.eclipse.jet.internal.taglib.control.IfTag.doEvalConditio n(IfTag.java:60)
at
org.eclipse.jet.internal.runtime.SafeConditionalRuntimeTag$1 .doRun(SafeConditionalRuntimeTag.java:69)
at
org.eclipse.jet.internal.runtime.SafeCustomRuntimeTag$TagSaf eRunnable.run(SafeCustomRuntimeTag.java:72)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
at org.eclipse.core.runtime.Platform.run(Platform.java:857)
at
org.eclipse.jet.internal.runtime.SafeConditionalRuntimeTag.o kToProcessBody(SafeConditionalRuntimeTag.java:64)

Caused by: org.eclipse.jet.xpath.XPathSyntaxException: Unrecognized token:
::
at org.eclipse.jet.internal.xpath.XPathImpl.compile(XPathImpl.j ava:103)
at
org.eclipse.jet.XPathContextExtender.compileXPath(XPathConte xtExtender.java:189)
at
org.eclipse.jet.XPathContextExtender.resolveAsObject(XPathCo ntextExtender.java:443)
... 32 more

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Re: JET Exceptions and Exception Handling [message #42418 is a reply to message #42235]

Wed, 27 February 2008 21:51

Paul Elder

Messages: 849
Registered: July 2009

Senior Member

Roshan:

$var::VarClass is not valid XPath, hence the exception.

You want:

$var/self::VarClass

Paul

"Roshan Soni" <roshan.soni1@gmail.com> wrote in message
news:5b8d412df496d627afa7f0d8d9a80861$1@www.eclipse.org...
> Hi,
>
> In my template I use the following <c:if test="$var::VarClass">
>
> and after I run, although my generation creates the correct output when I
> look at my log file I have the following error. Is this a bug? I got the
> test code from the FAQs:
>
> http://wiki.eclipse.org/JET_FAQ_How_do_I_test_for_the_type/E Class_of_an_element_in_XPath%3F
>
> Is there a way I can catch this exception because they are all thrown at
> the end to the IProgressMonitor I pass into my transformation and I never
> get a clean run.
>
> org.eclipse.jet.taglib.JET2TagException: Unrecognized token: ::
> at
> org.eclipse.jet.XPathContextExtender.resolveAsObject(XPathCo ntextExtender.java:448)
> at
> org.eclipse.jet.internal.taglib.control.IfTag.doEvalConditio n(IfTag.java:60)
> at
> org.eclipse.jet.internal.runtime.SafeConditionalRuntimeTag$1 .doRun(SafeConditionalRuntimeTag.java:69)
> at
> org.eclipse.jet.internal.runtime.SafeCustomRuntimeTag$TagSaf eRunnable.run(SafeCustomRuntimeTag.java:72)
> at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:37)
> at org.eclipse.core.runtime.Platform.run(Platform.java:857)
> at
> org.eclipse.jet.internal.runtime.SafeConditionalRuntimeTag.o kToProcessBody(SafeConditionalRuntimeTag.java:64)
>
> Caused by: org.eclipse.jet.xpath.XPathSyntaxException: Unrecognized token:
> ::
> at org.eclipse.jet.internal.xpath.XPathImpl.compile(XPathImpl.j ava:103)
> at
> org.eclipse.jet.XPathContextExtender.compileXPath(XPathConte xtExtender.java:189)
> at
> org.eclipse.jet.XPathContextExtender.resolveAsObject(XPathCo ntextExtender.java:443)
> ... 32 more
>

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