Message Definitions

Each Message Definition represents one HL7 message inside your VMD file. Each Message Definition consists of three objects: Message Grammar, Identity and Transformation Script. For more information about each object, click the following links:

Message Grammars
Message Identities
Transformation Scripts

Each message definition object is also briefly described in the table below:

Object

Definition

Message Grammar

The message grammar consists of two items: (1) Segment Grammar and (2) Table Grammar.

Segment Grammar: Defines the HL7 format of the message.

Table Grammar: Defines the mapping between the actual message and the internal representation of the message definition as seen by your application.

Identity

Defines the message fields and values that Chameleon uses to identify the message definition.

Transformation Script

If Scripted Transformation is enabled in the Transformation window, this script is used to transform an HL7 message from its original format into the final desired output using Python.

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Message Definitions