[GROOVY-7750] @Lazy allows instantiation of abstract class

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.4.4
• Fix Version/s: 2.5.0-alpha-1
• Component/s: groovy-runtime
• Labels: usability
• Assignee: Paul King
• Reporter: Johann
• Created: 04/Feb/16 22:49
• Updated: 02/May/17 02:03
• Resolved: 24/May/16 12:06

Description

Given this code:

@Lazy
Foo foo

abstract class Foo {}

You'll get:

java.lang.InstantiationException
	at sun.reflect.InstantiationExceptionConstructorAccessorImpl.newInstance(InstantiationExceptionConstructorAccessorImpl.java:48)
	at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
	at org.codehaus.groovy.reflection.CachedConstructor.invoke(CachedConstructor.java:80)
	at org.codehaus.groovy.runtime.callsite.ConstructorSite$ConstructorSiteNoUnwrapNoCoerce.callConstructor(ConstructorSite.java:105)
	at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallConstructor(CallSiteArray.java:60)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callConstructor(AbstractCallSite.java:235)
	at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callConstructor(AbstractCallSite.java:239)

This isn't really helpful. If I mistype a method name, Groovy will help me out with suggestions, why not here?

MODIFICATION by blackdrag:
@Lazy should recognize this and fail compilation to avoid the initialization of an abstract class.

Issue Links

• links to: GitHub Pull Request #334