data handler

When a match is found, the Data Handler knows which business object to create with which associated verb.

In this article, you developed three distinct service modules: a flat file adapter module, a data handler module and a simple service.

In previous versions, you could use a data handler in the import and export for a module.

For service gateway scenarios where the incoming message is of anyType, the data handler logic can now be moved into the mediation flow.

The source code for this custom Data Handler is found in the Project Interchange file provided as a download accompanying this article.

At this point, the Delimited data handler is complete.

A Data Handler is responsible for transforming the input and output types of an operation to the format used on the wire and visa versa.

The binding component is also set up to use the custom data handler configuration CheckoutConfiguration.

Therefore, invoking the Claim Check service in the export and import through the custom data handler is a good design.

If the Fault Selector detects a fault, the current message will be processed by a Fault Handler rather than by a Data Handler.

This means the PHP file is being called and the data is being loaded properly from the database using PHP as the data handler in the middle.

If this Data Handler was used with a non MQ binding then the MQHeader will not be defined in the ContextService.

It is worth noting that the headers are only available to the Data Handler if Propagate protocol header is enabled, which it is by default.

The data handler parsed the file, constructed a message and invoked the target service as many times as entries exist in the password file.

Therefore, you need another mechanism of specifying the business object to the data handler.

A comma-separated value is the default configuration for the delimited data handler.

It knows about the target service (blue) and includes this information as metadata passed to the Generic Data Handler.

A data handler is also added to your project, as shown in Figure 21.

A new Data Handler primitive converts physical formats to and from logical structures.

For each line in the flat file, the data handler module performs a target service invocation.

The custom data handler, ClaimCheckDataHandler, is invoked via its transform method.

In the FlatFileLib shared library, create an interface to the generic delimited data handler.

Try using this data handler with another binding and check the behavior.

The Flat File adapter module (Figure 12) receives the flat file and invokes the generic data handler.

SOAP messages, including faults, are supported using the SOAP Data Handler.

DelimitedFlatFileBO: This is a data type specifically created to interface with the Generic Delimited Data Handler (yellow).

This new adapter module would then reuse the data handler.

This name is obtained from the reference on the data handler component. In this case it is UserServicePartner.

It knows how to interact with the Flat File connector (pink) and the Delimited Data Handler module (yellow).

The same method is invoked from the data handler ( Figure 2) and from the custom mediation primitive ( Figure 3).

Generic Data Handler Module: This module knows how to operate on delimited files.

Now we know how to access the MQ Header in the Data Handler lets make a transformation decision, based on one of the fields.

The input values in the Initial request parameters correspond to the DelimitedFlatFile object that is the input to the generic data handler.

This is the data structure passed into the generic data handler.

The custom data handler configuration CheckinConfiguration has a number of properties

Creating the generic delimited data handler service

Key information supplied to the Data Handler includes

Altering the behavior of my Data Handler based on a header

Accessing MQ headers from a Data Handler