How to convert .xsd file to wsdl

wsdlxsd

I have .xsd file i need to convert it into wsdl,how would i do so?and is this conversion the right approach. I have request and response data in same .xsd file

Best Answer

You can not do that so easily. Usually, the xsd defines the structure (type) of the input and output messages. The wsdl used the xsd to define the operations that will be exposed by the service. An operation has usually a name and a pair of input and output messages.

I don't see how a tool could "reconstruct" the operations out of only the xsd only, except if it uses naming convention. E.g. messages requestDoIt and responseDoIt --> operation DoIt. If the xsd already contains the operations (which would be unusual) that could be ok, but it doesn't seem to be your case.

Manually creating the wsdl shouldn't be too long.

<types>
    <xsd:schema xmlns="..." targetNamespace="...">
        <xsd:import namespace="..." schemaLocation="MySchema.xsd"/>
    </xsd:schema>
</types>
...
 <wsdl:portType name="...">
    <wsdl:operation name="doIt">
        <wsdl:input message="tns:requestDoIt"/>
        <wsdl:output message="tns:responseDoIt"/>
    </wsdl:operation>
</wsdl:portType>

Have a look at WSDL essentials to get the general structure of the wsdl.

Or you can give a try to the tool WSDL Generator (from http://www.theprogrammerfactory.com/) whose purpose is apparently to ease this task. (Note that I never used it).

Another approach would be to generate classes out of the xsd, then use them to define the service class manually (this is the tedious part of matching types together into the corresponding operation) and then use another tool to transform the service class back into a complete wsdl. There are various tools available to convert to/from xsd and wsdl, for both Java or C#: wsgen, wsimport, xsd.exe, wsdl.exe.

Related Solutions

Generating a WSDL from an XSD file

You cannot - a XSD describes the DATA aspects e.g. of a webservice - the WSDL describes the FUNCTIONS of the web services (method calls). You cannot typically figure out the method calls from your data alone.

These are really two separate, distinctive parts of the equation. For simplicity's sake you would often import your XSD definitions into the WSDL in the <wsdl:types> tag.

(thanks to Cheeso for pointing out my inaccurate usage of terms)

Java – Automatically extracting inline XSD from WSDL into XSD file(s)

I don't know any libraries that would do this for you, but it is definitly possible to implement with a bit of effort (~200 lines). A rough meta-program to generate all inline and included XSDs:

method processWSDL(Document wsdl) {
    for each ("/wsdl:definitions/wsdl:types/xsd:schema" in wsdl) {
        call processXSD("inline_[i].xsd",".")
    }
    for each ("/wsdl:definitions/wsdl:import" in wsdl) {
        Document x = read and parse ("@location")
        if (x is WSDL) call processWSDL(x)
        else if (x is XSD) call processXSD("@location", x)
    }
}

method processXSD(String filename, Document xsd) {
    write "xsd" to a new file "filename"   // if 'filename' is a URL, take only the part after the last '/'
    for each ("/xsd:schema/xsd:import" or "/xsd:schema/xsd:include" in xsd) {
        if ("@schemaLocation" is local reference) {     // no 'http://' prefix
            Document x = read and parse ("@schemaLocation")
            call processXSD("@schemaLocation", x)
        }
    }
}

It is not a full solution, e.g. does not handle namespace prefixes defined outside of the inline schema, but hopefully gives a good starting point.

Best Answer

Related Solutions

Generating a WSDL from an XSD file

Java – Automatically extracting inline XSD from WSDL into XSD file(s)

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