3:11 a.m.
Hi BPEL folks,
I have a question regarding the assign-element.
I modeled a simple BPEL process, where the input is an array of xsd:anyURI and the output
should be a string of the e.g. the third element of this anyURI array. I assume, I have
some problems withe the XPATH expression in the assign element.
This is the bpel file:
| <?xml version="1.0" encoding="UTF-8"?>
| <process name="HelloWorld"
targetNamespace="urn:samples:review"
| xmlns="http://schemas.xmlsoap.org/ws/2003/03/business-process/"
| xmlns:tns="urn:samples:review"
| xmlns:char="http://services.planets-project.eu/ifr/characterisation"
| xmlns:rep="http://services.planets-project.eu/ifr/reporting"
| xmlns:bpel="http://schemas.xmlsoap.org/ws/2003/03/business-process/&...
| xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
| xmlns:xsd="http://www.w3.org/2001/XMLSchema"
| xmlns:array="http://jaxb.dev.java.net/array"
| xsi:schemaLocation="http://schemas.xmlsoap.org/ws/2003/03/business-p...
| http://schemas.xmlsoap.org/ws/2003/03/business-process/">
|
| <partnerLinks>
| <!-- establishes the relationship with the caller agent -->
| <partnerLink name="caller"
partnerLinkType="tns:Greeter-Caller"
| myRole="Greeter" />
|
| </partnerLinks>
|
| <variables>
| <!-- holds the incoming message -->
| <variable name="request" messageType="tns:nameMessage" />
| <!-- holds the outgoing message -->
| <variable name="response" messageType="tns:greetingMessage"
/>
| <variable name="dummy" type="xsd:anyURI" />
|
| </variables>
|
| <sequence>
|
| <!-- receive the name of a person -->
| <receive operation="sayHello" partnerLink="caller"
| portType="tns:Greeter" variable="request"
createInstance="yes" />
|
| <!-- Assign the final Report to the output variable -->
| <assign>
| <copy>
| <from variable="request" expression="name/array:item[3]"
/>
| <to variable="response" part="greeting" />
| </copy>
| </assign>
|
| <!-- reply with the greeting -->
| <reply operation="sayHello" partnerLink="caller"
| portType="tns:Greeter" variable="response" />
| </sequence>
|
| </process>
|
and this is the wsdl File:
| <?xml version="1.0" encoding="UTF-8"?>
| <definitions targetNamespace="urn:samples:review"
| xmlns="http://schemas.xmlsoap.org/wsdl/"
| xmlns:tns="urn:samples:review"
| xmlns:xsd="http://www.w3.org/2001/XMLSchema"
| xmlns:plt="http://schemas.xmlsoap.org/ws/2004/03/partner-link/"
| xmlns:char="http://services.planets-project.eu/ifr/characterisation"
| xmlns:rep="http://services.planets-project.eu/ifr/reporting"
| xmlns:array="http://jaxb.dev.java.net/array"
| >
|
|
| <types>
| <xs:schema targetNamespace='http://jaxb.dev.java.net/array'
version='1.0' xmlns:xs='http://www.w3.org/2001/XMLSchema'>
|
| <xs:complexType final='#all' name='anyFileURIArray'>
| <xs:sequence>
| <xs:element maxOccurs='unbounded' minOccurs='0'
name='item' nillable='true' type='xs:anyURI'/>
| </xs:sequence>
| </xs:complexType>
|
| </xs:schema>
| </types>
|
| <!-- characterizes the relationship between the greeter and its caller -->
| <plt:partnerLinkType name="Greeter-Caller">
| <plt:role name="Greeter" portType="tns:Greeter"/>
| </plt:partnerLinkType>
|
|
| <!-- carries the name of a person -->
| <message name="nameMessage">
| <part name="name" type="array:anyFileURIArray" />
| </message>
|
| <!-- carries the greeting -->
| <message name="greetingMessage">
| <part name="greeting" type="xsd:string" />
| </message>
|
| <!-- describes the interface presented to callers -->
| <portType name="Greeter">
| <operation name="sayHello">
| <input message="tns:nameMessage" />
| <output message="tns:greetingMessage" />
| </operation>
| </portType>
|
| </definitions>
|
The SOAP request of the deployed workflow is as followed:
| <ns1:sayHello xmlns:ns1="urn:samples:review">
| <name><item>file.doc</item>
| <item>file1.gif</item>
| <item>file2.doc</item>
| <item>file3.jpg</item>
| <item>file4.doc</item>
| <item>file5.doc</item>
| <item>file6.gif</item>
| <item>file7.doc</item>
| <item>file8.doc</item></name>
| </ns1:sayHello>
|
and here is the result I get, which does not include the third element (-->file2.doc)
:(
| <?xml version="1.0" encoding="UTF-8"?>
| <env:Envelope xmlns:env="http://schemas.xmlsoap.org/soap/envelope/">
| <env:Header />
| <env:Body>
| <ns1:sayHelloResponse xmlns:ns1="urn:samples:review">
| <greeting />
| </ns1:sayHelloResponse>
| </env:Body>
| </env:Envelope>
|
|
|
Thanks for your help!!! Maybe you can provide me with an example how to use XPATH
expressions!!!
Cheers Rainer
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