Hi, Martin
You example makes perfect sense, but the problem which I am experiencing with
axis2 is different.
I am going to slightly modify your example to explain. What I did is I have
added a new field to the subWorks class named title.
I have created a method called printWorksInfo which takes superclass(Works) as
an input parameter. In the main class I am instantiating an instance of
subWorks and passing it to that method.
In plain java not considering axis2 "else if (works instance of subWorks) "
condition would be true and I would be able to printout title.
What would happen if class fubar would've been exposed as webservice using
axis2, with printWorksInfo method, is that by passing to that method subclass
subWorks would result on the server side in instance of Superclass(Works) and
that is my problem.
XML which is send from client to the server would've clearly identify that
input parameter to the printWorksInfo method passed from the client is of
subWorks type, and it would've contain xml tag for title, but on the server
side inside printWorksInfo it
will be converted to Superclass(Works) and title value will be lost as it does
not exists on superclass. See my original post I have described this situation
with XML examples. In axis1 it works fine and in case subclass is passed to the
method it is correctly desirealized from XML to java object of subclass
instance. So the problem might be with the way axis2 deserialises XML.
/*contents of base class Works*/
package test;
public class Works
{
public int intValue=0;
public int getInt() { return this.intValue; }
}
/*contents of base class subWorks */
package test;
public class subWorks extends Works
{
public int intValue=1;
public String title = "title";
@Override
public int getInt() { return this.intValue; }
public String getTitle() {return this.title}
}
/*driver */
package test;
import test.Works;
import test.subWorks;
public class fubar
{
//now a test driver to determine what happens when a subclass is upcasted
public static void main(String [] args)
{
test.subWorks s =new test.subWorks();
printWorkInfo(s);
} //end main
public void printWorksInfo(Works works) {
if (works instanceof Works) {
system.out.println("superclass");
} else if (works instance of subWorks) {
system.out.println("subclass");
Works s = (subWorks) works;
System.out.println("Works title: " s.getTitle());
} // end If
} // end printWorksInfo
} //end fubar class
From: Martin Gainty [mailto:[email protected]]
Sent: 11. november 2010 16:41
To: [email protected]
Subject: RE: [AXIS2]. axis2. xsi:type object mapping does not work
Validimir
take this example
/*contents of base class Works*/
package test;
public class Works
{
public int intValue=0;
public int getInt() { return this.intValue; }
}
/*contents of base class subWorks */
package test;
public class subWorks extends Works
{
public int intValue=1;
@Override
public int getInt() { return this.intValue; }
}
/*driver */
package test;
import test.Works;
import test.subWorks;
public class fubar
{
//now a test driver to determine what happens when a subclass is upcasted
public static void main(String [] args)
{
test.Works w =new test.Works();
test.subWorks s =new test.subWorks();
System.out.println("The original base class Works produces"+w.getInt());
System.out.println("The subclass subWorks produces "+s.getInt());
//now some upcasting
Works upcast=(subWorks)s;
System.out.println("The upcasted subclass produces"+upcast.getInt());
} //end main
} //end fubar class
classes>java -classpath .;%CLASSPATH% test.fubar
The original base class Works produces0
The subclass subWorks produces 1
The upcasted subclass produces1
/* the subclass when upcasted does NOT take on the characteristics of the
parent base class */
Martin Gainty
______________________________________________
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________________________________
From: [email protected]
To: [email protected]
Date: Thu, 11 Nov 2010 15:55:40 +0100
Subject: RE: [AXIS2]. axis2. xsi:type object mapping does not work
Hi,
Yes you are right superclass could not be cast to subclass, but in my example I
am passing Subclass to the method which takes Superclass as an argument, which
is fine.
From: Supun Malinga [mailto:[email protected]]
Sent: 11. november 2010 14:58
To: [email protected]
Subject: Re: [AXIS2]. axis2. xsi:type object mapping does not work
On Thu, Nov 11, 2010 at 5:30 PM, Vladimir Duloglo
<[email protected]<mailto:[email protected]>> wrote:
I am experiencing some problems converting XML requests on the server side, in
case XML requests contain xsi:type parameter.
The setup is following
Two objects:
ObjectSubClass extends ObjectSuperClass
A webservice with a method: getObject(ObjectSuperClass obj)
In wsdl these objects defined in the following way:
<xs:schema attributeFormDefault="qualified" elementFormDefault="qualified"
targetNamespace="http://mypackage.com/xsd";>
<xs:complexType name="ObjectSuperClass">
<xs:sequence>
<xs:element minOccurs="0" name="id" nillable="true" type="xs:string"/>
<xs:element minOccurs="0" name="name" nillable="true" type="xs:string"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="ObjectSubClass">
<xs:complexContent>
<xs:extension base="ax21:ObjectSuperClass">
<xs:sequence>
<xs:element minOccurs="0" name="phone" nillable="true" type="xs:string"/>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:schema>
>From the client I am calling this method by passing to it subclass -
>ObjectSubClass which has one extrafield -- phone:
ObjectSubClass obj = new ObjectSubclass();
obj.setId("some id");
obj.setName("some name");
obj.setPhone("some phone");
getObject(obj);
In the request XML object is represented like that:
<obj xsi:type="q1:ObjectSubClass" xmlns:q1="http://mypackage.com/xsd";>
<id>1</id>
<name>test</name>
<q1:phone>123</q1:phone>
</obj>
But on the server side no matter if I am passing instance of ObjectSuperClass
or instance of ObjectSubClass I am getting always instance of superclass
ObjectSuperClass, even when xsi:type specifies that object is of subclass
ObjectSubClasstype. As a result I am not getting values present on
ObjectSubClass and getting only values defined in superclass ObjectSuperClass.
hi,
may be i'm wrong, i'm still a newbe here. :)
but, didn't the casting of the superclass object to the subclass object work?
thanks,
Same structure worked fine in axis1 ans xsi:type was respected.
Maybe it is some configuration in axis2.
I would be really thankful for any help.
--
Supun Malinga,
Software Engineer,
WSO2 Inc.
http://wso2.com<http://wso2.com/>
http://wso2.org<http://wso2.org/>
email - [email protected]<mailto:[email protected]>
mobile - 071 56 91 321
