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Posted to bsf-dev@jakarta.apache.org by "Brett Randall (JIRA)" <ji...@apache.org> on 2010/01/10 11:07:56 UTC

[jira] Created: (BSF-29) ScriptException constructed via chained constructor ScriptException(Exception) always returns null for getMessage()

ScriptException constructed via chained constructor ScriptException(Exception) always returns null for getMessage()
-------------------------------------------------------------------------------------------------------------------

                 Key: BSF-29
                 URL: https://issues.apache.org/jira/browse/BSF-29
             Project: BSF
          Issue Type: Bug
    Affects Versions: BSF-3.0
            Reporter: Brett Randall
            Priority: Minor


If a ScriptException is constructed via ScriptException(Exception e), the resulting exception always returns null for getMessage().  This is against the normal chained-exception convention of:

     * Constructs a new throwable with the specified cause and a detail
     * message of <tt>(cause==null ? null : cause.toString())</tt> (which
     * typically contains the class and detail message of <tt>cause</tt>).

(reference Javadoc for java.lang.Throwable).

The following unit test, added to BSF ScriptExceptionTest, fails against BSF 3.0 on JDK1.4, but passes against JDK6/JSR-223:

    public void testException5(){
    	ScriptException ex = new ScriptException(new Exception("exception message"));
    	try {
    		throw ex;
    	} catch (ScriptException e) {
    		assertEquals("java.lang.Exception: exception message", ex.getMessage());
    	}
    }

For BSF 3.0, ex.getMessage() returns null.

API clients which wrap/chain detailed error messages, perhaps containing line/column and other details of the nature of the error in the script engine, will find these errors missing in the top-level exception and only accessible via getCause().


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[jira] Resolved: (BSF-29) ScriptException constructed via chained constructor ScriptException(Exception) always returns String "null" for getMessage()

Posted by "Sebb (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/BSF-29?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sebb resolved BSF-29.
---------------------

    Resolution: Fixed

Thanks for the report. The problem was that the ScriptException tried to maintain its own message rather than leaving it to the super-class.

URL: http://svn.apache.org/viewvc?rev=925045&view=rev
Log:
BSF-29 ScriptException constructed via chained constructor ScriptException(Exception) always returns String "null" for getMessage()

Modified:
   jakarta/bsf/branches/bsf3.x/RELEASE_NOTES
   jakarta/bsf/branches/bsf3.x/bsf-api/src/main/java/javax/script/ScriptException.java
   jakarta/bsf/branches/bsf3.x/bsf-api/src/test/java/org/apache/bsf/ScriptExceptionTest.java


> ScriptException constructed via chained constructor ScriptException(Exception) always returns String "null" for getMessage()
> ----------------------------------------------------------------------------------------------------------------------------
>
>                 Key: BSF-29
>                 URL: https://issues.apache.org/jira/browse/BSF-29
>             Project: BSF
>          Issue Type: Bug
>    Affects Versions: BSF-3.0
>            Reporter: Brett Randall
>            Priority: Minor
>
> If a ScriptException is constructed via ScriptException(Exception e), the resulting exception always returns the String "null" for getMessage().  This is against the normal chained-exception convention of:
>      * Constructs a new throwable with the specified cause and a detail
>      * message of <tt>(cause==null ? null : cause.toString())</tt> (which
>      * typically contains the class and detail message of <tt>cause</tt>).
> (reference Javadoc for java.lang.Throwable).
> The following unit test, added to BSF ScriptExceptionTest, fails against BSF 3.0 on JDK1.4, but passes against JDK6/JSR-223:
>     public void testException5(){
>     	ScriptException ex = new ScriptException(new Exception("exception message"));
>     	try {
>     		throw ex;
>     	} catch (ScriptException e) {
>     		assertEquals("java.lang.Exception: exception message", ex.getMessage());
>     	}
>     }
> For BSF 3.0, ex.getMessage() returns String "null".
> API clients which wrap/chain detailed error messages, perhaps containing line/column and other details of the nature of the error in the script engine, will find these errors missing in the top-level exception and only accessible via getCause().

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[jira] Updated: (BSF-29) ScriptException constructed via chained constructor ScriptException(Exception) always returns String "null" for getMessage()

Posted by "Brett Randall (JIRA)" <ji...@apache.org>.
     [ https://issues.apache.org/jira/browse/BSF-29?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Brett Randall updated BSF-29:
-----------------------------

    Description: 
If a ScriptException is constructed via ScriptException(Exception e), the resulting exception always returns the String "null" for getMessage().  This is against the normal chained-exception convention of:

     * Constructs a new throwable with the specified cause and a detail
     * message of <tt>(cause==null ? null : cause.toString())</tt> (which
     * typically contains the class and detail message of <tt>cause</tt>).

(reference Javadoc for java.lang.Throwable).

The following unit test, added to BSF ScriptExceptionTest, fails against BSF 3.0 on JDK1.4, but passes against JDK6/JSR-223:

    public void testException5(){
    	ScriptException ex = new ScriptException(new Exception("exception message"));
    	try {
    		throw ex;
    	} catch (ScriptException e) {
    		assertEquals("java.lang.Exception: exception message", ex.getMessage());
    	}
    }

For BSF 3.0, ex.getMessage() returns String "null".

API clients which wrap/chain detailed error messages, perhaps containing line/column and other details of the nature of the error in the script engine, will find these errors missing in the top-level exception and only accessible via getCause().


  was:
If a ScriptException is constructed via ScriptException(Exception e), the resulting exception always returns null for getMessage().  This is against the normal chained-exception convention of:

     * Constructs a new throwable with the specified cause and a detail
     * message of <tt>(cause==null ? null : cause.toString())</tt> (which
     * typically contains the class and detail message of <tt>cause</tt>).

(reference Javadoc for java.lang.Throwable).

The following unit test, added to BSF ScriptExceptionTest, fails against BSF 3.0 on JDK1.4, but passes against JDK6/JSR-223:

    public void testException5(){
    	ScriptException ex = new ScriptException(new Exception("exception message"));
    	try {
    		throw ex;
    	} catch (ScriptException e) {
    		assertEquals("java.lang.Exception: exception message", ex.getMessage());
    	}
    }

For BSF 3.0, ex.getMessage() returns null.

API clients which wrap/chain detailed error messages, perhaps containing line/column and other details of the nature of the error in the script engine, will find these errors missing in the top-level exception and only accessible via getCause().


        Summary: ScriptException constructed via chained constructor ScriptException(Exception) always returns String "null" for getMessage()  (was: ScriptException constructed via chained constructor ScriptException(Exception) always returns null for getMessage())

> ScriptException constructed via chained constructor ScriptException(Exception) always returns String "null" for getMessage()
> ----------------------------------------------------------------------------------------------------------------------------
>
>                 Key: BSF-29
>                 URL: https://issues.apache.org/jira/browse/BSF-29
>             Project: BSF
>          Issue Type: Bug
>    Affects Versions: BSF-3.0
>            Reporter: Brett Randall
>            Priority: Minor
>
> If a ScriptException is constructed via ScriptException(Exception e), the resulting exception always returns the String "null" for getMessage().  This is against the normal chained-exception convention of:
>      * Constructs a new throwable with the specified cause and a detail
>      * message of <tt>(cause==null ? null : cause.toString())</tt> (which
>      * typically contains the class and detail message of <tt>cause</tt>).
> (reference Javadoc for java.lang.Throwable).
> The following unit test, added to BSF ScriptExceptionTest, fails against BSF 3.0 on JDK1.4, but passes against JDK6/JSR-223:
>     public void testException5(){
>     	ScriptException ex = new ScriptException(new Exception("exception message"));
>     	try {
>     		throw ex;
>     	} catch (ScriptException e) {
>     		assertEquals("java.lang.Exception: exception message", ex.getMessage());
>     	}
>     }
> For BSF 3.0, ex.getMessage() returns String "null".
> API clients which wrap/chain detailed error messages, perhaps containing line/column and other details of the nature of the error in the script engine, will find these errors missing in the top-level exception and only accessible via getCause().

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