[BEANUTILS-17] [beanutils] IllegalArgumentException in BeanUtils.copyProperties when property types don't match

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.6
• Fix Version/s: 1.8.0

Environment

Operating System: other
Platform: All

• Bugzilla Id: 27633
• Assignee: Unassigned
• Reporter: Matthew Sgarlata
• Created: 13/Mar/04 01:40
• Updated: 25/Mar/08 08:07
• Resolved: 25/Mar/08 08:07

Description

(this report applies to BeanUtils 1.6.1)

When using BeanUtils.copyProperties, if the source and destination beans have
properties of the same name but with different types, the system throws a
java.lang.IllegalArgumentException. This is NOT recorded as a thrown exception
in the BeanUtils.copyProperties API. I think that this only happens if a
Converter is not registered for the object.

I personally think throwing an exception is a bug and that copyProperties
should just fail silently (i.e. - don't populate that property of the
destination bean). However, if an exception is deemed most appropriate by the
committers, I think it should be added to the contract of the method. If a
committer could weigh-in on this issue and decide which behavior is most
appropriate, I can submit the needed patch.

Here is the stack trace I got:

java.lang.IllegalArgumentException: argument type mismatch
at java.lang.reflect.Method.invoke(Native Method)
at org.apache.commons.beanutils.PropertyUtils.setSimpleProperty
(PropertyUtils.java:1789)
at org.apache.commons.beanutils.BeanUtils.copyProperty
(BeanUtils.java:450)
at org.apache.commons.beanutils.BeanUtils.copyProperties
(BeanUtils.java:264)
at com.bah.jroc.ws.CapabilityServiceSoapBindingImpl.getCapability
(CapabilityServiceSoapBindingImpl.java:58)
at com.bah.jroc.ws.CapabilityServiceSoapBindingSkeleton.getCapability
(CapabilityServiceSoapBindingSkeleton.java:55)
at java.lang.reflect.Method.invoke(Native Method)
at org.apache.axis.providers.java.RPCProvider.invokeMethod
(RPCProvider.java:397)
at org.apache.axis.providers.java.RPCProvider.processMessage
(RPCProvider.java:304)
at org.apache.axis.providers.java.JavaProvider.invoke
(JavaProvider.java:329)
at org.apache.axis.strategies.InvocationStrategy.visit
(InvocationStrategy.java:71)
at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:157)
at org.apache.axis.SimpleChain.invoke(SimpleChain.java:122)
at org.apache.axis.handlers.soap.SOAPService.invoke
(SOAPService.java:517)
at org.apache.axis.server.AxisServer.invoke(AxisServer.java:324)

... etc.