BizTalk WCF-WebHttp mapping form-data variable from multi-occurrence nodes - biztalk

Question

My client's API requires variable data to be delivered to them via HTTP POST. Some of this data is mapped to the URL and some of the data is in the message body form variables:
Url: http://myclientapi.com/poNumber/111222/complete
Message body variables: carrier=FEDEX&trackingNumber=4XXXXXX&shipDate=2018-12-17
WCF-WebHttp port seems to be the ticket. It is easy enough to define a flat file schema for the message body variables (carrier, trackingNumber and shipDate).
My problem is the URL variable mapping for poNumber in the send port configuration. I want to do something like this:
<BtsHttpUrlMapping>
<Operation Name = "POSHIPPED" Method="POST" Url="/poNumber/{poNumber}/complete"/>
</BtsHttpUrlMapping>
Given that only single occurrence nodes can be promoted via property schema I can't map the poNumber data to the same nodes that I map the message body variables, nor do I want the poNumber name/value included in the message body.
Have I reached the limitations of this particular adapter?

Answer 1

Assuming that the repeating node you are talking about is in the destination schema going to the WCF-WebHttp adatper, and that the poNumber is in a non-repeating node on a schema that you are mapping from.
What you need to do is to create a Property Schema where you define the poNumber as MessageContextPropertyBase
Property Schema
<?xml version="1.0" encoding="utf-16"?>
<xs:schema xmlns="http://Scratch.SO53891801propertyschema" xmlns:b="http://schemas.microsoft.com/BizTalk/2003" targetNamespace="http://Scratch.SO53891801propertyschema" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:annotation>
<xs:appinfo>
<b:schemaInfo schema_type="property" />
</xs:appinfo>
</xs:annotation>
<xs:element name="poNumber" type="xs:string">
<xs:annotation>
<xs:appinfo>
<b:fieldInfo propertyGuid="3acc0f2f-64b0-4057-bc59-b8c76ab220a1" propSchFieldBase="MessageContextPropertyBase" />
</xs:appinfo>
</xs:annotation>
</xs:element>
</xs:schema>
You add this property schema your input schema. From your input where your orderNumber is in a non-repeating node, you link the poNumber to the property.
Sample input schema
<?xml version="1.0" encoding="utf-16"?>
<xs:schema xmlns="http://Scratch.SO53891801_input" xmlns:b="http://schemas.microsoft.com/BizTalk/2003" xmlns:ns0="http://Scratch.SO53891801propertyschema" targetNamespace="http://Scratch.SO53891801_input" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:annotation>
<xs:appinfo>
<b:imports>
<b:namespace prefix="ns0" uri="http://Scratch.SO53891801propertyschema" location=".\SO53891801propertyschema.xsd" />
</b:imports>
</xs:appinfo>
</xs:annotation>
<xs:element name="Root">
<xs:annotation>
<xs:appinfo>
<b:properties>
<b:property name="ns0:poNumber" xpath="/*[local-name()='Root' and namespace-uri()='http://Scratch.SO53891801_input']/*[local-name()='poNumber' and namespace-uri()='']" />
</b:properties>
</xs:appinfo>
</xs:annotation>
<xs:complexType>
<xs:sequence>
<xs:element name="poNumber" type="xs:string" />
<xs:element name="carrier" type="xs:string" />
<xs:element name="trackingNumber" type="xs:string" />
<xs:element name="shipDate" type="xs:date" />
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>
Sample input file
<ns0:Root xmlns:ns0="http://Scratch.SO53891801_input">
<poNumber>poNumber_0</poNumber>
<carrier>carrier_0</carrier>
<trackingNumber>trackingNumber_0</trackingNumber>
<shipDate>1999-05-31</shipDate>
</ns0:Root>
Sample output schema
<?xml version="1.0" encoding="utf-16"?>
<xs:schema xmlns="http://Scratch.SO53891801" xmlns:b="http://schemas.microsoft.com/BizTalk/2003" targetNamespace="http://Scratch.SO53891801" xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="HttpRequestBody">
<xs:complexType>
<xs:sequence>
<xs:element maxOccurs="unbounded" name="FromValue">
<xs:complexType>
<xs:sequence>
<xs:element name="Id" type="xs:string" />
<xs:element name="Value" type="xs:string" />
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>
Create a map between the two.
Map
<?xml version="1.0" encoding="utf-16"?>
<mapsource Name="BizTalk Map" Version="2" BizTalkServerMapperTool_Version="3.0" XRange="100" YRange="420" OmitXmlDeclaration="Yes" UseXSLTransform="Undefined" TreatElementsAsRecords="No" OptimizeValueMapping="Yes" GenerateDefaultFixedNodes="Yes" PreserveSequenceOrder="No" IgnoreNamespacesForLinks="Yes" method="xml" CopyPIs="No" xmlVersion="1.0">
<SrcTree RootNode_Name="Root">
<Reference Location=".\SO53891801-input.xsd" />
</SrcTree>
<TrgTree RootNode_Name="HttpRequestBody">
<Reference Location=".\SO53891801.xsd" />
</TrgTree>
<ScriptTypePrecedence>
<CSharp Enabled="Yes" />
<ExternalAssembly Enabled="Yes" />
<VbNet Enabled="Yes" />
<JScript Enabled="Yes" />
<XsltCallTemplate Enabled="Yes" />
<Xslt Enabled="Yes" />
</ScriptTypePrecedence>
<TreeValues>
<TestValues />
<ConstantValues />
</TreeValues>
<Pages>
<Page Name="Page 1">
<Links>
<Link LinkID="1" LinkFrom="/*[local-name()='<Schema>']/*[local-name()='Root']/*[local-name()='carrier']" LinkTo="1" />
<Link LinkID="2" LinkFrom="/*[local-name()='<Schema>']/*[local-name()='Root']/*[local-name()='trackingNumber']" LinkTo="1" />
<Link LinkID="3" LinkFrom="/*[local-name()='<Schema>']/*[local-name()='Root']/*[local-name()='shipDate']" LinkTo="1" />
<Link LinkID="4" LinkFrom="/*[local-name()='<Schema>']/*[local-name()='Root']/*[local-name()='carrier']" LinkTo="/*[local-name()='<Schema>']/*[local-name()='HttpRequestBody']/*[local-name()='FromValue']/*[local-name()='Value']" />
<Link LinkID="5" LinkFrom="/*[local-name()='<Schema>']/*[local-name()='Root']/*[local-name()='trackingNumber']" LinkTo="/*[local-name()='<Schema>']/*[local-name()='HttpRequestBody']/*[local-name()='FromValue']/*[local-name()='Value']" />
<Link LinkID="6" LinkFrom="/*[local-name()='<Schema>']/*[local-name()='Root']/*[local-name()='shipDate']" LinkTo="/*[local-name()='<Schema>']/*[local-name()='HttpRequestBody']/*[local-name()='FromValue']/*[local-name()='Value']" />
<Link LinkID="7" LinkFrom="/*[local-name()='<Schema>']/*[local-name()='Root']/*[local-name()='carrier']" LinkTo="/*[local-name()='<Schema>']/*[local-name()='HttpRequestBody']/*[local-name()='FromValue']/*[local-name()='Id']" Compiler-Copy-Directive="CopyName" />
<Link LinkID="8" LinkFrom="/*[local-name()='<Schema>']/*[local-name()='Root']/*[local-name()='trackingNumber']" LinkTo="/*[local-name()='<Schema>']/*[local-name()='HttpRequestBody']/*[local-name()='FromValue']/*[local-name()='Id']" Compiler-Copy-Directive="CopyName" />
<Link LinkID="9" LinkFrom="/*[local-name()='<Schema>']/*[local-name()='Root']/*[local-name()='shipDate']" LinkTo="/*[local-name()='<Schema>']/*[local-name()='HttpRequestBody']/*[local-name()='FromValue']/*[local-name()='Id']" Compiler-Copy-Directive="CopyName" />
<Link LinkID="10" LinkFrom="1" LinkTo="/*[local-name()='<Schema>']/*[local-name()='HttpRequestBody']/*[local-name()='FromValue']" />
</Links>
<Functoids>
<Functoid FunctoidID="1" Functoid-FID="424" X-Cell="53" Y-Cell="173">
<Input-Parameters>
<Parameter Type="link" Value="1" linkIndex="0" Guid="7932e28c-0c98-4f47-aea8-f9a3a709eef0" />
<Parameter Type="link" Value="2" linkIndex="1" Guid="44112afb-3729-4d14-ba00-9053c96964a4" />
<Parameter Type="link" Value="3" linkIndex="2" Guid="eaecaba3-61c0-4cea-ae1b-16316322cea6" />
</Input-Parameters>
</Functoid>
</Functoids>
</Page>
</Pages>
</mapsource>
Context property in message
From the input schema it will promote the property, and it will still exist after the map has executed.
Showing the Context Property still exists after the map on the send port