Complex Type versus Simple Type in a WSDL definition

[Dan Drillich]

Good Day,

WSDL Document Example uses complexTypes in its schema, such as -

<element name="TradePriceRequest">
              <complexType>
                  <all>
                      <element name="tickerSymbol" type="string"/>
                  </all>
              </complexType>
</element>
 

    

In this specific case, it seems to me that an XSD simple element would suffice, such as -

 
<element name="TradePriceRequest" type="xsd1:string"/>
   

Therefore, is there any reason for the usage of complexTypes here?

Regards,
Dan

[Yaron Naveh]

You are right that in this particular case a single element could be enough.

However it is a known convention to have a common root to all inner elements. So even though with one element it is not really helpful, it is still used. It also makes the SOAP more readable as the wrapper element name is based on the method name.