Description:
------------
I have been quite sceptical about the XML that SDO is producing when it builds a SOAP request, especially w.r.t. the namespaces. So I tried loading the XML that SDO is producing into Java XERCES with validation on. There are several problems with the XML generated, I think.

Using the two xsds that are in the reproduce section below, and the short PHP script also there, SDO generates:

<?xml version="1.0" encoding="UTF-8"?>
<BOGUS xmlns="http://Component" xmlns:tns="http://Component" xmlns:tns2="http://www.test.com/info" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="add">
  <person>
    <tns2:name>
      <first>Will</first>
      <last>Shakespeare</last>
    </tns2:name>
  </person>
</BOGUS>

There are three (!) things wrong with this.
1. XERCES will not accept the xsi:type="add". I do not really know why. I assume this is because there is no type called "add", it's only an element. So I do not think this should be coming out. 

2. name should not be in tns2=http://www.test.com/info, neither should "first" and "last" be in the default namespace of http://Component. The person.xsd has no elementFormDefault, so the elements below <person> should all ne in the no name namespace. 

3.You have to change the person.xsd to see the third thing: put ElementNameDefault="qualified" in
the person schema, then "name", "first" and "last" should all now be coming out in the http://www.test.com/info namespace, but it makes no difference to the generated XML. 

Reproduce code:
---------------
<?php
$xmldas = SDO_DAS_XML::create('types.xsd');
$person = $xmldas->createDataObject('http://www.test.com/info','personType');
$name = $person->createDataObject('name');
$name->first = "Will";
$name->last  = "Shakespeare";
$add = $xmldas->createDataObject('http://Component','add');
$add->person = $person;
$xdoc   = $xmldas->createDocument('', 'BOGUS', $add);
$xmlstr = $xmldas->saveString($xdoc, 2);
echo $xmlstr;
?>

types.xsd:
    <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" 
      xmlns:ns0="http://www.test.com/info"
      targetNamespace="http://Component"
      elementNameDefault="qualified">
      <xs:import schemaLocation="person.xsd" namespace="http://www.test.com/info"/>
      <xs:element name="add">
        <xs:complexType>
          <xs:sequence>
            <xs:element name="person" type="ns0:personType" nillable="true"/>
          </xs:sequence>
        </xs:complexType>
      </xs:element>
    </xs:schema>

person.xsd:
<?xml version="1.0" encoding="UTF-8"?>
<schema xmlns="http://www.w3.org/2001/XMLSchema" 
    targetNamespace="http://www.test.com/info" 
    xmlns:info="http://www.test.com/info">
    <complexType name="nameType">
		<sequence>
			<element name="first" type="string"></element>
			<element name="last" type="string"></element>
		</sequence>
	</complexType>
	<complexType name="personType">
		<sequence>
			<element name="name" type="info:nameType"></element>
		</sequence>
	</complexType>	
</schema>

Expected result:
----------------
see above

Actual result:
--------------
see above