[weld-issues] [JBoss JIRA] (WELD-1141) Bean proxy class has non-varargs method for original varargs method

[Adam Michalik (JIRA)]

Adam Michalik created WELD-1141:
-----------------------------------

             Summary: Bean proxy class has non-varargs method for original varargs method
                 Key: WELD-1141
                 URL: https://issues.jboss.org/browse/WELD-1141
             Project: Weld
          Issue Type: Bug
    Affects Versions: 1.1.8.Final
            Reporter: Adam Michalik


Test case:

@RequestScoped
public class TestVarargs {
    public void varargsMethod(String... strings) {}
}

public class TestClass {
    @Inject
    TestVarargs testVarargs;

    public void runTest() {
        testClass(testVarargs.getClass());
        testClass(TestVarargs.class);
    }

    private void testClass(Class<?> clazz) {
        for (Method m : clazz.getMethods()) {
            if (m.getName().equals("varargsMethod")) {
                System.out.println(clazz + " : " + m + " : " + m.isVarArgs());
            }
        }
    }
}

Prints:
class TestVarargs$Proxy$_$$_WeldClientProxy : public void TestVarargs$Proxy$_$$_WeldClientProxy.varargsMethod(java.lang.String[]) : false
class TestVarargs : public void TestVarargs.varargsMethod(java.lang.String[]) : true

The method generated in Weld proxy class is not a varargs method while the original one was. This breaks proper method lookup in tools that use reflection - in my case it was ZK EL resolver: for ${bean.method('String arg')} where signature is method(String...) there was proper code to handle a varargs call but only if the method was indeed declared as Method.isVarargs(), which was not the case when ${bean} was a Weld proxy.

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