Support for Generic Types

[glassfishrobot]

When we have a class like:

public class GenericsTestController {

private E value;

public E getValue()

{ return value; }

public void setValue(E value)

{ this.value = value; }

}

And we have this class to use as a managed bean (integerTest): public class IntegerTestController extends GenericsTestController {

public String add()

{ setValue(getValue()+1); return null; }

public String subtract()

{ setValue(getValue()-1); return null; }

}

This JSF code will not work:

Value: With this error: java.lang.ClassCastException: java.lang.String cannot be cast to Java.lang.Integer at genericstest.IntegerTestController.add(IntegerTestController.java:18) The problem is with section 2.2.7 of the specification (1.1): The provided property will first be coerced to a String. If there is a BeanInfoProperty for this property and there were no errors retrieving it, the propertyType of the propertyDescriptor is returned. Otherwise, a PropertyNotFoundException is thrown. The propertyType of a generic property is Object.class, that gets coerced to String.class, and we get the ClassCastException. #### Environment Operating System: All Platform: All #### Affected Versions [current]

[glassfishrobot]

• Issue Imported From: https://github.com/javaee/uel-ri/issues/7
• Original Issue Raised By:@glassfishrobot
• Original Issue Assigned To: @glassfishrobot
• Original Issue Closed By:@glassfishrobot

[glassfishrobot]

@glassfishrobot Commented Reported by josefreire

[glassfishrobot]

@glassfishrobot Commented josefreire said: Created an attachment (id=1) Proposed patch

[glassfishrobot]

@glassfishrobot Commented josefreire said: Could someone please look at this issue?

It's been around for some time, and already has a proposed patch.

[glassfishrobot]

@glassfishrobot Commented josefreire said: This issue can be closed.

With Java 7, the Introspector correctly returns the property type if the class is generic.

[glassfishrobot]

@glassfishrobot Commented kchung said: work with jdk 7.

[glassfishrobot]

@glassfishrobot Commented File: issue-7-proposedpatch.diff Attached By: josefreire

[glassfishrobot]

@glassfishrobot Commented This issue was imported from java.net JIRA UEL-7

[glassfishrobot]

@glassfishrobot Commented Marked as fixed on Thursday, March 14th 2013, 11:26:54 am