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This topic
provides background information about the SOAP messages that are
sent in Web Service Example 1: RPC-Oriented Method with Simple Type
Parameters.
In example 1, the following
client SQL statement is executed:
INVOKE TRAVELCOMPONENT.GETTOURS
WITH
SELECT 'AUSTRALIA','ISLAND SUNTANNER'
The Web Service component
handles this statement, and composes a SOAP request message. The
information how to compose this message is defined in the
TRAVELSERVICE.wsdl file:
<wsdl:operation name="GETTOURS">
<soap:operation
soapAction="http://MyWebServer/TravelService/TRAVELSERVICE.asp#GETTOURS"
style="rpc" />
<wsdl:input
name="GETTOURS">
<soap:body
use="encoded"
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
namespace="http://MyWebServer/TravelService/TRAVELSERVICE.wsdl"
/>
</wsdl:input>
<wsdl:output
name="GETTOURSResponse">
<soap:body
use="encoded"
encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
namespace="http://MyWebServer/TravelService/TRAVELSERVICE.wsdl"
/>
</wsdl:output>
</wsdl:operation>
In this code fragment, the
attributes style="rpc" and
use="encoded" result in
method names and parameter names appearing in the SOAP request
message:
<?xml version="1.0"
encoding="UTF-8"?>
<soapenv:Envelope
xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<soapenv:Body>
<ns1:GETTOURS
soapenv:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:ns1="http://MyWebServer/TravelService/TRAVELSERVICE.wsdl">
<ns1:destination
xsi:type="xsd:string">
AUSTRALIA</ns1:destination>
<ns1:tour_type
xsi:type="xsd:string">
SUNTANNER</ns1:tour_type>
</ns1:GETTOURS></soapenv:Body>
</soapenv:Envelope>
The body of this SOAP request
message includes a GETTOURS method and destination and tour_type
input parameters.
Next, the following statement
is sent to the Rules Service:
INVOKE
TRAVELSERVICE.GETTOURS
WITH
SELECT '... soap message above ...'
request
NOTE:
You can view this statement in the Rules service log files, if
the Rules Service is in Debug mode.
Then, the Web Service provider
composes a SOAP response:
<soap:Envelope
xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:tns="http://MyWebServer/TravelService/TRAVELSERVICE.wsdl">
<soap:Body>
<GETTOURSResponse
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<DESTINATION
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xsi:type="xsd:string">AUSTRALIA
</DESTINATION>
...
...
</GETTOURSResponse>
</soap:Body>
</soap:Envelope>
The body of this SOAP response
message includes a GETTOURSResponse method and all output
parameters.
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