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Monday, July 30, 2007 3:10 PM

QualifiedType accessor to XML Schema type mapping

This previous post shows how WCF LOB Adapter SDK metadata object model can be used to define metadata for operations and/or types so that the WCF contract (WSDL) can be generated from it. The ResolveOperationMetadata() / ResolveTypeMetadata() methods
Posted by sonua | 1 Comments
Saturday, June 16, 2007 7:00 PM

Contract Generation from WSDL/XML Schema - DataContractSerializer vs. XmlSerializer

WCF LOB Adapter SDK metadata object model generates WSDL / XML Schema with constructs that are well-liked by DataContractSerializer . The Svcutil.Exe creates a proxy / service interface from this WSDL containing attributes such as ServiceContract, OperationContract,
Posted by sonua | 0 Comments
Attachment(s): HelloWorld.wsdl
Friday, June 15, 2007 7:00 PM

Metadata object model extensibility using ExportXmlSchema

Scenario: Adapter Developer needs to define an operation signature using XML Schema types not directly supported by the WCF LOB Adapter SDK Metadata Object Model. For example, there is a need to have an operation signature like this – void SendXmlBlob(System.Xml.XmlElement
Posted by sonua | 2 Comments
Saturday, April 07, 2007 10:48 AM

Implementing Metadata Resolver Handler

The Adapter Browse Handler and Adapter Search Handler implementations return an array of objects of type MetadataRetrievalNode. This object structure doesn’t contain the actual information about the input and output types of each operation. The input
Posted by sonua | 3 Comments
Attachment(s): implementing Metadata Resolver Handler.docx
Saturday, April 07, 2007 10:00 AM

Implementing Metadata Search Handler

The implementation and usage of metadata search handler is identical to metadata browse handler, with the exception of this class returning a filtered list of metadata objects back to the caller depending on the passed in search criteria. It can return
Posted by sonua | 3 Comments
Thursday, April 05, 2007 5:42 PM

Implementing Metadata Browse Handler

Most databases and LOB applications provide some form of metadata that can be used to define the data that is exchanged between the adapter and the target system. Adapter Developer needs to implement IMetadataBrowseHandler interface provided within WCF
Posted by sonua | 3 Comments
Attachment(s): Implementing Metadata Browse Handler.docx
Wednesday, April 04, 2007 10:16 PM

Show me the metadata!

WCF LOB Adapter SDK extends the WCF channel architecture with Metadata Object Model and provides an infrastructure for browsing, searching, retrieving and importing metadata from the adapter. What is metadata? See this wikipedia definition for a more
Posted by sonua | 3 Comments
Attachment(s): show me the metadata.docx
Monday, March 26, 2007 7:48 PM

Providing custom XML Schema files for resolving operation and type metadata

One of the frequently asked questions that I get from our TAP customers is about an ability to provide own schema files for resolving the metadata. In this post, I provide a simple example of accomplishing that. I will add more details in future posts
Posted by sonua | 6 Comments
 
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