BizTalk™ Unleashed

Serializer Implementation

In this section, we will implement the serializer design from the preceding section using C++ and ATL. Unlike the functoid implementation earlier, there is not a method for implementing the serializer using Visual Basic. The COM interface uses types, such as IStream, not accessible from Visual Basic.

The implementation comprises the following items:

• BizTalk envelope, port, and channel configuration

• A COM coclass implementing IBizTalkSerializerComponent

The COM coclass provides the following:

• Serialization— Conversion of XML to the output format

• Group separation— Identify grouping boundaries

• Sizing— Identify sizes of documents, groups, and the interchange

For a test harness, we will use the same HTML application used to ...