[GROOVY-4244] Properties cannot be set through a @Delegate

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.7.2
• Fix Version/s: 1.7.3, 1.8-beta-1
• Assignee: Roshan Dawrani
• Reporter: Daniel Wiell
• Created: 09/Jun/10 03:15
• Updated: 23/Jun/10 15:45
• Resolved: 09/Jun/10 11:27

Description

When accessing a non-final property through a @Delegate as below, a ReadOnlyPropertyException is thrown.

class DelegateTests extends GroovyTestCase {
    void testNonFinalPropertiesCanBeSet() {
        def foo = new Foo()
        foo.baz = "baz"
        assert foo.baz == "baz"
    }
}

class Foo {
    @Delegate Bar bar = new Bar()
}

class Bar {
    String baz
}

groovy.lang.ReadOnlyPropertyException: Cannot set readonly property: baz for class: test.Foo
	at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:2406)
	at groovy.lang.MetaClassImpl.setProperty(MetaClassImpl.java:3307)
	at test.Foo.setProperty(DelegateTests.groovy)
	at org.codehaus.groovy.runtime.InvokerHelper.setProperty(InvokerHelper.java:179)
	at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.setProperty(ScriptBytecodeAdapter.java:483)
	at test.DelegateTests.testNonFinalPropertiesCanBeSet(DelegateTests.groovy:11)