what should be the serializer for this ?

UserCollection
{
public User[] users;
}

1) A bean mapping for 'User' is required.

2) Is a bean mapping required for UserCollection or
it should be an arraymapping ?

<arrayMapping
xmlns:ns="SecurityService"
qname="ns:UserCollection"
type="java:mypkg.User[]"
innerType="ns:User"
encodingStyle=""
/>

If I use the above the client fails with

Caused by: java.io.IOException: No serializer found for class mypkg.UserCollection in registry org.apache.axis.encoding.TypeMappingDelegate@102a0a5
at org.apache.axis.encoding.SerializationContext.serializeActual(SerializationContext.java:1429)
at org.apache.axis.encoding.SerializationContext.serialize(SerializationContext.java:914)
at org.apache.axis.encoding.SerializationContext.outputMultiRefs(SerializationContext.java:989)
at org.apache.axis.message.SOAPBody.outputImpl(SOAPBody.java:145)
at org.apache.axis.message.SOAPEnvelope.outputImpl(SOAPEnvelope.java:477)
at org.apache.axis.message.MessageElement.output(MessageElement.java:1208)
at org.apache.axis.SOAPPart.writeTo(SOAPPart.java:315)
... 33 more

The following bean mapping works if I have the indexed set and get methods in the UserCollection object.
Viz. set(int i, User user) and getUser(int i) if present in UserCollection the following works. But would like to know what is wrong with the Array mapping or am I missing something ?

<typeMapping
xmlns:ns="SecurityService"
qname="ns:UserCollection"
type="java:mypkg.CSUserCollection"
serializer="org.apache.axis.encoding.ser.BeanSerializerFactory"
deserializer="org.apache.axis.encoding.ser.BeanDeserializerFactory"
encodingStyle=""
/>

Thankx in advance
ranjiith s

You have to specify mapping for usercollection, user and user[].
if you are using rpc style, then u cna set the encodingstyle to http://schemas.xmlsoap.org/soap/encoding/