Parse BPEL output using PL/SQL

Question

Hello,
I am invoking WSDL from PL/SQL and WSDL is returning following output.
+<?xml version="1.0" encoding="UTF-8"?>+
+<SOAP-ENV:Envelope+
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"
xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+<SOAP-ENV:Header+
xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/"></SOAP-ENV:Header><SO
AP-ENV:Body>
+<ser-root:soapIntefraceASVOutput+
xmlns:ser-root="http://eai.corpit.microsoft.com/microAccountValidation/provider/Acc
ountStringValidator"><acctStringValidateOutput>
+<status>112</status>+
+<message>In+
valid account segment
code</message></acctStringValidateOutput></ser-root:soapIntefraceASVOutput></SOA
P-ENV:Body>
+</SOAP-ENV:Envelope>+
I wanted to parse this XML in my PL/SQL Block and wanted to retrieve <status> and <message> element Value.
Please help me on this.
Thank You
AB,

Answer 1

This is probably not a good pattern for invoking webservices from database, it would be better to invoke this webserivce asynchronously via a queue/table and have another webservice invoked from that webservice, which would process the response, wrapping the pl/sql logic - but then your case may be unique.
To parse this XML in pl/sql, you would do the following if the varchar2 variable v_response_string contains the soap response from the web service:
v_response := XMLType.createXML(v_response_string);
v_status := v_response.extract('/soap:Envelop/soap:Body/ser-root:soapIntefraceASVOutput/acctStringValidateOutput/status/text()'
, 'xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" '||
'xmlns:ser-root="http://eai.corpit.microsoft.com/microAccountValidation/provider/AccountStringValidator"'
v_ message := v_response.extract('/soap:Envelop/soap:Body/ser-root:soapIntefraceASVOutput/acctStringValidateOutput/message/text()'
, 'xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" '||
'xmlns:ser-root="http://eai.corpit.microsoft.com/microAccountValidation/provider/AccountStringValidator"'
Hope this helps,
Thanks,
Shanmu.
http://www.prshanmu.com/articles/