XFire attempts to instantiate abstract classes when parsing a response
----------------------------------------------------------------------
Key: XFIRE-406
URL: http://jira.codehaus.org/browse/XFIRE-406
Project: XFire
Type: Bug
Versions: 1.1
Environment: N/A
Reporter: Stefan Freyr Stefansson
Assigned to: Dan Diephouse
Priority: Critical
I have the following complex types in a WSDL that I'm using to generate classes
from with the wsgen Ant task.
First the abstract base type:
{code:xml}
<s:complexType name="RootEntityType" abstract="true">
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="UserDefinedName"
type="s:string" />
<s:element minOccurs="0" maxOccurs="1" name="Description"
type="s:string" />
<s:element minOccurs="0" maxOccurs="1" name="ObjectID"
type="s:string" />
</s:sequence>
</s:complexType>
{code}
Then the abstract sub type:
{code:xml}
<s:complexType name="PartyType" abstract="true">
<s:complexContent mixed="false">
<s:extension base="s2:RootEntityType">
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="PartyId"
type="s2:PartyId" />
<s:element minOccurs="0" maxOccurs="1" name="IndividualValidFor"
type="s2:IndividualValidFor" />
<s:element minOccurs="0" maxOccurs="1" name="LanguageAbilities"
type="s2:LanguageAbilities" />
<s:element minOccurs="0" maxOccurs="1" name="PartyRoles"
type="s2:PartyRoles" />
</s:sequence>
</s:extension>
</s:complexContent>
</s:complexType>
{code}
And finally the concrete sub-type:
{code:xml}
<s:complexType name="IndividualType">
<s:complexContent mixed="false">
<s:extension base="s2:PartyType">
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="individualGender"
type="s:int" />
<s:element minOccurs="0" maxOccurs="1"
name="individualPlaceOfBirth" type="s:string" />
<s:element minOccurs="0" maxOccurs="1"
name="individualNationality" type="s:string" />
<s:element minOccurs="0" maxOccurs="1"
name="individualMaritalStatus" type="s:int" />
<s:element minOccurs="0" maxOccurs="1"
name="skillSetOfIndividual" type="s2:skillSetOfIndividual" />
<s:element minOccurs="0" maxOccurs="1"
name="disabilitiesOfIndividual" type="s2:disabilitiesOfIndividual" />
<s:element minOccurs="0" maxOccurs="1"
name="IndividualINamedUsing" type="s2:IndividualNameType" />
<s:element minOccurs="0" maxOccurs="1"
name="IndividualIdentifiedBy" type="s2:IndividualIdentificationType" />
</s:sequence>
</s:extension>
</s:complexContent>
</s:complexType>
{code}
Then I have an operation defined that uses the abstract type (PartyType) as a
part of its return value:
{code:xml}
<s:complexType name="GetPartyByPartyIDResponse">
<s:sequence>
<s:element minOccurs="0" maxOccurs="1" name="Party"
type="s2:PartyType" />
</s:sequence>
</s:complexType>
{code}
But in reality the webservice actually returns the IndividualType (which makes
sense since PartyType is abstract).
When I call this web service using the generated classes from XFire's genws
task I get the following error:
{noformat}
.. org.codehaus.xfire.XFireRuntimeException: Could not invoke service.. Nested
exception is org.codehaus.xfire.fault.XFireFault: Could not unmarshall type.
org.codehaus.xfire.fault.XFireFault: Could not unmarshall type.
at org.codehaus.xfire.jaxb2.JaxbType.readObject(JaxbType.java:58)
at
org.codehaus.xfire.aegis.AegisBindingProvider.readParameter(AegisBindingProvider.java:91)
at
org.codehaus.xfire.service.binding.AbstractBinding.read(AbstractBinding.java:208)
at
org.codehaus.xfire.service.binding.DocumentBinding.readMessage(DocumentBinding.java:32)
at
org.codehaus.xfire.soap.handler.SoapBodyHandler.invoke(SoapBodyHandler.java:42)
at
org.codehaus.xfire.handler.HandlerPipeline.invoke(HandlerPipeline.java:98)
at org.codehaus.xfire.client.Client.onReceive(Client.java:448)
at
org.codehaus.xfire.transport.http.HttpChannel.sendViaClient(HttpChannel.java:174)
at
org.codehaus.xfire.transport.http.HttpChannel.send(HttpChannel.java:66)
at
org.codehaus.xfire.handler.OutMessageSender.invoke(OutMessageSender.java:26)
at
org.codehaus.xfire.handler.HandlerPipeline.invoke(HandlerPipeline.java:98)
at org.codehaus.xfire.client.Client.invoke(Client.java:359)
at
org.codehaus.xfire.client.XFireProxy.handleRequest(XFireProxy.java:77)
at org.codehaus.xfire.client.XFireProxy.invoke(XFireProxy.java:57)
at $Proxy12.GetPartyByPartyID(Unknown Source)
at ProductTest.main(ProductWsTest.java:52)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:90)
Caused by: javax.xml.bind.UnmarshalException
- with linked exception:
[javax.xml.bind.UnmarshalException: Unable to create an instance of
com.company.schemas.sid.tmf.commonbusinessentities._2005_10.PartyType
- with linked exception:
[java.lang.InstantiationException]]
at
com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.handleStreamException(UnmarshallerImpl.java:395)
at
com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:334)
at
com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:311)
at org.codehaus.xfire.jaxb2.JaxbType.readObject(JaxbType.java:48)
... 20 more
Caused by: javax.xml.bind.UnmarshalException: Unable to create an instance of
com.company.schemas.sid.tmf.commonbusinessentities._2005_10.PartyType
- with linked exception:
[java.lang.InstantiationException]
at
com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext.handleEvent(UnmarshallingContext.java:523)
at
com.sun.xml.bind.v2.runtime.unmarshaller.Loader.reportError(Loader.java:199)
at
com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext.createInstance(UnmarshallingContext.java:490)
at
com.sun.xml.bind.v2.runtime.unmarshaller.StructureLoader.startElement(StructureLoader.java:145)
at
com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext._startElement(UnmarshallingContext.java:367)
at
com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext.startElement(UnmarshallingContext.java:345)
at
com.sun.xml.bind.v2.runtime.unmarshaller.InterningXmlVisitor.startElement(InterningXmlVisitor.java:35)
at
com.sun.xml.bind.v2.runtime.unmarshaller.StAXStreamConnector.handleStartElement(StAXStreamConnector.java:189)
at
com.sun.xml.bind.v2.runtime.unmarshaller.StAXStreamConnector.bridge(StAXStreamConnector.java:123)
at
com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:332)
... 22 more
12.5.2006 14:06:57 org.apache.commons.httpclient.HttpMethodDirector
executeWithRetry
INFO: I/O exception (java.net.ConnectException) caught when processing request:
Connection refused
12.5.2006 14:06:57 org.apache.commons.httpclient.HttpMethodDirector
executeWithRetry
INFO: Retrying request
12.5.2006 14:06:57 org.apache.commons.httpclient.HttpMethodDirector
executeWithRetry
INFO: I/O exception (java.net.ConnectException) caught when processing request:
Connection refused
12.5.2006 14:06:57 org.apache.commons.httpclient.HttpMethodDirector
executeWithRetry
INFO: Retrying request
12.5.2006 14:06:57 org.apache.commons.httpclient.HttpMethodDirector
executeWithRetry
INFO: I/O exception (java.net.ConnectException) caught when processing request:
Connection refused
12.5.2006 14:06:57 org.apache.commons.httpclient.HttpMethodDirector
executeWithRetry
INFO: Retrying request
org.codehaus.xfire.XFireRuntimeException: Could not invoke service.. Nested
exception is org.codehaus.xfire.fault.XFireFault: Couldn't send message.
org.codehaus.xfire.fault.XFireFault: Couldn't send message.
at org.codehaus.xfire.fault.XFireFault.createFault(XFireFault.java:89)
at
org.codehaus.xfire.handler.OutMessageSender.invoke(OutMessageSender.java:30)
at
org.codehaus.xfire.handler.HandlerPipeline.invoke(HandlerPipeline.java:98)
at org.codehaus.xfire.client.Client.invoke(Client.java:359)
at
org.codehaus.xfire.client.XFireProxy.handleRequest(XFireProxy.java:77)
at org.codehaus.xfire.client.XFireProxy.invoke(XFireProxy.java:57)
at $Proxy15.GetVODOffers(Unknown Source)
at ProductWsTest.main(ProductWsTest.java:101)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:90)
Caused by: org.codehaus.xfire.XFireException: Couldn't send message.
at
org.codehaus.xfire.transport.http.HttpChannel.sendViaClient(HttpChannel.java:179)
at
org.codehaus.xfire.transport.http.HttpChannel.send(HttpChannel.java:66)
at
org.codehaus.xfire.handler.OutMessageSender.invoke(OutMessageSender.java:26)
... 11 more
Caused by: java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:507)
at java.net.Socket.connect(Socket.java:457)
at java.net.Socket.<init>(Socket.java:365)
at java.net.Socket.<init>(Socket.java:238)
at
org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:79)
at
org.apache.commons.httpclient.protocol.DefaultProtocolSocketFactory.createSocket(DefaultProtocolSocketFactory.java:121)
at
org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:706)
at
org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:386)
at
org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:170)
at
org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:396)
at
org.codehaus.xfire.transport.http.CommonsHttpMessageSender.send(CommonsHttpMessageSender.java:166)
at
org.codehaus.xfire.transport.http.HttpChannel.sendViaClient(HttpChannel.java:168)
... 13 more
Process finished with exit code 0
{noformat}
It seems that this error is caused by XFire trying to instantiate the abstract
PartyType class when parsing the response but that is of course impossible
since that class is abstract. Instead it should instantiate its subclass,
IndividualType.
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