Use SOAP to describe your services

Flow can use SOAP WSDLs to understand what endpoints exist, and how to call them.

Flow uses Semantic schemas to describe how data relates between systems. For SOAP WSDLs, this means embedding references to Taxi types within your SOAP WSDLs.

To do this, we embed Taxi metadata within the WSDL.

Add Taxi annotations to WSDLs

Taxi annotations use a custom taxi:type element within SOAP WSDLs to add a reference to a Taxi type.

Namespace

The type tag is part of the http://taxilang.org/ namespace. (Note the trailing / on the URL - this is important).

<definitions xmlns:taxi="http://taxilang.org/" ...

Elements then have Taxi-type references embedded with them like this:

<xs:complexType name="tCurrency">
   <xs:sequence>
      <xs:element name="sISOCode" type="xs:string" taxi:type="flow.CurrencyIsoCode"/>
      <xs:element name="sName" type="xs:string" taxi:type="flow.CurrencyName"/>
   </xs:sequence>
</xs:complexType>
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