Importing xsd into wsdl

Question

This is my current configuration:

XSD

<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns="http://stock.com/schemas/services/stock"
    xmlns:tns="http://stock.com/schemas/services/stock"
 xmlns:xsd="http://www.w3.org/2001/XMLSchema"
  elementFormDefault="qualified"  targetNamespace="http://stock.com/schemas/services/stock">

<xsd:element name="Stock">
    <xsd:complexType>
        <xsd:sequence>
            <xsd:element name="ticker" nillable="true" type="xsd:string"/>
            <xsd:element maxOccurs="unbounded" minOccurs="0" name="quotes" nillable="true" type="Quote"/>
        </xsd:sequence>
    </xsd:complexType>
</xsd:element>

<xsd:complexType name="Quote">
    ........
</xsd:complexType>
.......
<xsd:element name="gethighBetaStockResponse">
    <xsd:complexType>
        <xsd:sequence>
            <xsd:element name="stock" ref="Stock" minOccurs="1" maxOccurs="unbounded"/>
        </xsd:sequence>
    </xsd:complexType>
</xsd:element>

WSDL

<?xml version="1.0" encoding="UTF-8"?><definitions targetNamespace="http://stock.com/schemas/services/stock/wsdl"
    .....xmlns:external="http://stock.com/schemas/services/stock"
<import namespace="http://stock.com/schemas/services/stock" location="Stock.xsd" />
<message name="getStockQuoteResp">
    <part name="parameters" element="external:getStockQuoteResponse" />
</message>

However,the moment ref="Stock" is changed to type="Stock",the wsdl2java starts giving Type {http://stock.com/schemas/services/stock}Stock is referenced but not defined.

Somehow it seems a clash between wsdl and xsd imports - but I just cant resolve it.Help is appreciated.

Answer 1

You have a couple of problems here.

First, the XSD has an issue where an element is both named or referenced; in your case should be referenced.

Change:

<xsd:element name="stock" ref="Stock" minOccurs="1" maxOccurs="unbounded"/> 

To:

<xsd:element name="stock" type="Stock" minOccurs="1" maxOccurs="unbounded"/> 

And:

• Remove the declaration of the global element Stock
• Create a complex type declaration for a type named Stock

So:

<xsd:element name="Stock">
    <xsd:complexType>

To:

<xsd:complexType name="Stock">

Make sure you fix the xml closing tags.

The second problem is that the correct way to reference an external XSD is to use XSD schema with import/include within a wsdl:types element. wsdl:import is reserved to referencing other WSDL files. More information is available by going through the WS-I specification, section WSDL and Schema Import. Based on WS-I, your case would be:

INCORRECT: (the way you showed it)

<?xml version="1.0" encoding="UTF-8"?>
<definitions targetNamespace="http://stock.com/schemas/services/stock/wsdl"
    .....xmlns:external="http://stock.com/schemas/services/stock"
    <import namespace="http://stock.com/schemas/services/stock" location="Stock.xsd" />
    <message name="getStockQuoteResp">
        <part name="parameters" element="external:getStockQuoteResponse" />
    </message>
</definitions>

CORRECT:

<?xml version="1.0" encoding="UTF-8"?>
<definitions targetNamespace="http://stock.com/schemas/services/stock/wsdl"
    .....xmlns:external="http://stock.com/schemas/services/stock"
    <types>
        <schema xmlns="http://www.w3.org/2001/XMLSchema">
            <import namespace="http://stock.com/schemas/services/stock" schemaLocation="Stock.xsd" />             
        </schema>
    </types>
    <message name="getStockQuoteResp">
        <part name="parameters" element="external:getStockQuoteResponse" />
    </message>
</definitions>

SOME processors may support both syntaxes. The XSD you put out shows issues, make sure you first validate the XSD.

It would be better if you go the WS-I way when it comes to WSDL authoring.

Other issues may be related to the use of relative vs. absolute URIs in locating external content.