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From "Kennard Consulting (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (JEXL-138) Erroneous "inaccessible or unknown property" warning
Date Thu, 12 Jul 2012 09:39:35 GMT

     [ https://issues.apache.org/jira/browse/JEXL-138?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kennard Consulting updated JEXL-138:
------------------------------------

    Description: 
JEXL displays an erroneous "inaccessible or unknown property" warning when you try to access
a property is both accessible, and known, but that happens to return null.

Please see the attached test case. JEXL reports:

{{'foo.bar;' inaccessible or unknown property foo}}

But foo is clearly an accessible and known property because it is accessed directly 2 lines
above, and 1 line above we access 'foo.baz' which works without error.

The difference seems to be that getBaz() returns "baz" whereas getBar() returns null.

  was:
JEXL displays an erroneous "inaccessible or unknown property" warning when you try to access
a property is both accessible, and known, but that happens to return null.

Consider the following code:

---
	public void testInaccessibleProperty()
		throws Exception {

		JexlEngine engine = new JexlEngine();
		JexlContext context = new MapContext();
		context.set( "foo", new Foo() );

		// These lines okay

		System.out.println( engine.createExpression( "foo" ).evaluate( context ));
		System.out.println( engine.createExpression( "foo.baz" ).evaluate( context ));

		// This line says:
		// org.apache.commons.jexl2.Interpreter unknownVariable
		// WARNING: org.metawidget.example.swing.appframework.JexlTest.testInaccessibleProperty@44![0,7]:
'foo.bar;' inaccessible or unknown property foo

		System.out.println( engine.createExpression( "foo.bar" ).evaluate( context ));
	}

	public class Foo {

		public String getBar() {
			return null;
		}

		public String getBaz() {
			return "baz";
		}
	}
---

    
> Erroneous "inaccessible or unknown property" warning
> ----------------------------------------------------
>
>                 Key: JEXL-138
>                 URL: https://issues.apache.org/jira/browse/JEXL-138
>             Project: Commons JEXL
>          Issue Type: Bug
>    Affects Versions: 2.1.1
>            Reporter: Kennard Consulting
>         Attachments: JexlTest.java
>
>
> JEXL displays an erroneous "inaccessible or unknown property" warning when you try to
access a property is both accessible, and known, but that happens to return null.
> Please see the attached test case. JEXL reports:
> {{'foo.bar;' inaccessible or unknown property foo}}
> But foo is clearly an accessible and known property because it is accessed directly 2
lines above, and 1 line above we access 'foo.baz' which works without error.
> The difference seems to be that getBaz() returns "baz" whereas getBar() returns null.

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