[wsf-c-dev] [jira] Created: (WSFPHP-276) schema import /include doesn't work some time - depends on the appendChild works

[Dimuthu Gamage (JIRA)]

schema import /include doesn't work some time - depends on the appendChild works
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                 Key: WSFPHP-276
                 URL: https://wso2.org/jira/browse/WSFPHP-276
             Project: WSO2 WSF/PHP
          Issue Type: Bug
         Environment: Linux + windows
            Reporter: Dimuthu Gamage
            Assignee: Dimuthu Gamage


Schema import in wsf/ph completely depends on how appendChild works. In theory if imported schema is added to the original wsdl (we add all to one wsdl to parse it with xslt templates).
E.x.
the following schema

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://test" targetNamespace="http://test">
    <xsd:element ref="me"/>
    <xsd:element name="me" type="xsd:int"/>
</xsd:schema>

 can be added in to 

<wsdl:definitions xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<wsdl:types>
<!--adding to here-->
</wsdl:types>
</wsdl:definitions>

straight away , and theoretically it should work.

We use PHP DOM appendChild function to this work. But appendChild do some optimization so duplicate namespaces are not declared over and over again (this happen only with some conditions). This leads to change in prefixes of some namespaces, or sometime loose prefixes. 

The problem is 
1. if some elements referring to other elements with such a changing prefix,  it will not identify the actual object.
2. if the namespace prefix is used only inside ref attribute, dom thinks the prefix is never use and ignore that.

For an example for above schema php generates following kind of wsdl


<wsdl:definitions xmlns:wsdl="http://schemas.xmlsoap.org/wsdl/" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<wsdl:types>

<xsd:schema targetNamespace="http://test">
    <xsd:element ref="me"/>
    <xsd:element name="me" type="xsd:int"/>
</xsd:schema>


</wsdl:types>
</wsdl:definitions>


This is not the same wsdl that we hope to get, the appendChild have ignored the default namespace declaration in addition to the xsd: namespace declaration. 

This should be fixed to get some wsdls working :(

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