[HARMONY-6038] [classlib] [beans] java.beans.Introspector.getBeanInfo doesn't works well and throws NPE

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 5.0M8
• Fix Version/s: 5.0M9
• Component/s: Classlib
• Estimated Complexity: Moderate
• Assignee: Unassigned
• Reporter: Kevin Zhou
• Created: 09/Dec/08 14:51
• Updated: 12/Dec/08 01:51
• Resolved: 12/Dec/08 01:51

Description

Conduct the given a test case [1] below on RI and HARMONY.
RI works well, while HARMONY will throw a NullPointerException [2].
The exception is throw in StandardBeanInfo during the merging of properties from MockParent ang MockChild classes.

[1] Test Case
public class IntrospectorTest extends TestCase {
public static class MockParent {
public void setValue(int v)

{ // do nothing }
public void setValue(int v, String s) { // do nothing }

}
public static class MockChild extends MockParent {
public void setValue(int v)

{ // do nothing }

}
public void test_Introspector() throws Exception

{ BeanInfo beanInfo = Introspector.getBeanInfo(MockChild.class); }

}
[2] NPE Stack Trace:
java.lang.NullPointerException
at java.beans.StandardBeanInfo.mergeProps(StandardBeanInfo.java:295)
at java.beans.StandardBeanInfo.mergeBeanInfo(StandardBeanInfo.java:209)
at java.beans.Introspector.getBeanInfoImpl(Introspector.java:282)
at java.beans.Introspector.getBeanInfoImplAndInit(Introspector.java:347)
at java.beans.Introspector.getBeanInfo(Introspector.java:162)
at IntrospectorTest.test_MockObject(IntrospectorTest.java:27)