Ok, I have put together a simple example of the problem I am seeing with
query expressions. This example does not include a forEach activity. Also,
I am running this against a current build of Ode 1.X.
The attached process takes a single int as input and returns a single string
as output. Valid arguments for the input are 1, 2, or 3. The process
should return "one", "two", or "three", depending on the input.
The problem occurs when I try to assign values out of the RecordSet variable
into the Record variable. When I use a query on the "to" side of the copy,
the process will throw a selectionFailure fault at runtime. The process
works correctly if you replace the queries with expressions.
In case my attachments don't get through, I'll include the text of the files
here:
********** Begin QueryTest1.wsdl **********
<?xml version="1.0"?>
<definitions name="QueryTest1"
targetNamespace="mynamespace"
xmlns:tns="mynamespace"
xmlns:plnk="http://docs.oasis-open.org/wsbpel/2.0/plnktype";
xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/";
xmlns="http://schemas.xmlsoap.org/wsdl/";
>
<types>
<schema attributeFormDefault="unqualified"
elementFormDefault="qualified"
targetNamespace="mynamespace"
xmlns="http://www.w3.org/2001/XMLSchema";>
<element name="QueryTest1Request" type="int" />
<element name="QueryTest1Response" type="string" />
<complexType name="RecordType">
<sequence>
<element name="SomeValue" type="string"></element>
<element name="AnotherValue" type="string"></element>
</sequence>
</complexType>
<complexType name="RecordSetType">
<sequence>
<element ref="tns:Record" minOccurs="0"
maxOccurs="unbounded"></element>
</sequence>
</complexType>
<element name="Record" type="tns:RecordType"></element>
<element name="RecordSet" type="tns:RecordSetType"></element>
</schema>
</types>
<message name="QueryTest1RequestMessage">
<part name="payload" element="tns:QueryTest1Request"/>
</message>
<message name="QueryTest1ResponseMessage">
<part name="payload" element="tns:QueryTest1Response"/>
</message>
<portType name="QueryTest1">
<operation name="process">
<input message="tns:QueryTest1RequestMessage" />
<output message="tns:QueryTest1ResponseMessage"/>
</operation>
</portType>
<plnk:partnerLinkType name="QueryTest1">
<plnk:role name="QueryTest1Provider" portType="tns:QueryTest1"/>
</plnk:partnerLinkType>
<binding name="QueryTest1Binding" type="tns:QueryTest1">
<soap:binding style="document"
transport="http://schemas.xmlsoap.org/soap/http"; />
<operation name="process">
<soap:operation soapAction="mynamespace/process" />
<input>
<soap:body use="literal" />
</input>
<output>
<soap:body use="literal" />
</output>
</operation>
</binding>
<service name="QueryTest1Service">
<port name="QueryTest1Port" binding="tns:QueryTest1Binding">
<soap:address location="http://[server]:[port]/ode/QueryTest1";
/>
</port>
</service>
</definitions>
********** End QueryTest1.wsdl **********
********** Begin QueryTest1.bpel **********
<?xml version="1.0" encoding="UTF-8"?>
<bpws:process exitOnStandardFault="yes"
expressionLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath2.0"
name="QueryTest1"
queryLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath2.0"
suppressJoinFailure="yes" targetNamespace="mynamespace"
xmlns:bpws="http://docs.oasis-open.org/wsbpel/2.0/process/executable";
xmlns:ode="http://www.apache.org/ode/type/extension";
xmlns:tns="mynamespace" xmlns:xs="http://www.w3.org/2001/XMLSchema";>
<bpws:import importType="http://schemas.xmlsoap.org/wsdl/";
location="QueryTest1.wsdl" namespace="mynamespace"/>
<bpws:partnerLinks>
<bpws:partnerLink myRole="QueryTest1Provider" name="client"
partnerLinkType="tns:QueryTest1"/>
</bpws:partnerLinks>
<bpws:variables>
<bpws:variable messageType="tns:QueryTest1RequestMessage"
name="input"/>
<bpws:variable messageType="tns:QueryTest1ResponseMessage"
name="output"/>
<bpws:variable element="tns:RecordSet" name="RecordSet"/>
<bpws:variable element="tns:Record" name="Record"/>
</bpws:variables>
<bpws:sequence name="QueryTest1">
<bpws:receive createInstance="yes" name="ReceiveInput"
operation="process" partnerLink="client"
portType="tns:QueryTest1" variable="input"/>
<bpws:assign name="InitializeRecordSetVariable" validate="no">
<bpws:copy>
<bpws:from>
<bpws:literal>
<tns:RecordSet xmlns:tns="mynamespace"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="mynamespace QueryTest1.wsdl ">
<tns:Record>
<tns:SomeValue>one</tns:SomeValue>
<tns:AnotherValue>ONE</tns:AnotherValue>
</tns:Record>
<tns:Record>
<tns:SomeValue>two</tns:SomeValue>
<tns:AnotherValue>TWO</tns:AnotherValue>
</tns:Record>
<tns:Record>
<tns:SomeValue>three</tns:SomeValue>
<tns:AnotherValue>THREE</tns:AnotherValue>
</tns:Record>
</tns:RecordSet>
</bpws:literal>
</bpws:from>
<bpws:to variable="RecordSet"/>
</bpws:copy>
</bpws:assign>
<bpws:assign name="InitializeRecordVariable" validate="no">
<bpws:copy>
<bpws:from>
<bpws:literal>
<tns:Record xmlns:tns="mynamespace"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="mynamespace QueryTest1.wsdl ">
<tns:SomeValue/>
<tns:AnotherValue/>
</tns:Record>
</bpws:literal>
</bpws:from>
<bpws:to variable="Record"/>
</bpws:copy>
</bpws:assign>
<bpws:assign name="AssignRequestedRecordToVariable" validate="no">
<bpws:copy>
<bpws:from variable="RecordSet">
<bpws:query
queryLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath2.0"><![CDATA[tns:
Record[number($input.payload)]/tns:SomeValue]]></bpws:query>
</bpws:from>
<!------------ Selection failure. ------------>
<bpws:to variable="Record">
<bpws:query
queryLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath2.0"><![CDATA[tns:
SomeValue]]></bpws:query>
</bpws:to>
<!------------ This works. ------------>
<!-- <bpws:to
expressionLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath2.0"><![CDATA
[$Record/tns:SomeValue]]></bpws:to> -->
</bpws:copy>
<bpws:copy>
<bpws:from variable="RecordSet">
<bpws:query
queryLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath2.0"><![CDATA[tns:
Record[number($input.payload)]/tns:AnotherValue]]></bpws:query>
</bpws:from>
<!------------ Selection failure. ------------>
<bpws:to variable="Record">
<bpws:query
queryLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath2.0"><![CDATA[tns:
AnotherValue]]></bpws:query>
</bpws:to>
<!------------ This works. ------------>
<!-- <bpws:to
expressionLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath2.0"><![CDATA
[$Record/tns:AnotherValue]]></bpws:to> -->
</bpws:copy>
</bpws:assign>
<bpws:assign name="AssignFromVariableToOutput" validate="no">
<bpws:copy>
<bpws:from variable="Record">
<bpws:query
queryLanguage="urn:oasis:names:tc:wsbpel:2.0:sublang:xpath2.0"><![CDATA[tns:
SomeValue]]></bpws:query>
</bpws:from>
<bpws:to part="payload" variable="output"/>
</bpws:copy>
</bpws:assign>
<bpws:reply name="ReplyWithOutput" operation="process"
partnerLink="client" portType="tns:QueryTest1"
variable="output"/>
</bpws:sequence>
</bpws:process>
********** End QueryTest1.bpel **********
********** Begin deploy.xml **********
<?xml version="1.0" encoding="UTF-8"?>
<deploy xmlns="http://www.apache.org/ode/schemas/dd/2007/03";
xmlns:ns1="mynamespace">
<process name="ns1:QueryTest1">
<active>true</active>
<provide partnerLink="client">
<service name="ns1:QueryTest1Service" port="QueryTest1Port"/>
</provide>
</process>
</deploy>
********** End deploy.xml **********
