A message flow represents the set of actions performed on a message when it is received and processed by a broker. The content and behavior of a message flow is defined by a set of files that you create when you complete your definition and configuration of the message flow content and structure:
You can customize the following built-in nodes by creating free-form ESQL statements that use the built-in ESQL statements and functions, and your own user-defined functions:
Node | Usage |
---|---|
DataDelete node | Use this node to delete one or more rows from a database table without creating an output message. |
Datalnsert node | Use this node to insert one or more rows in a database table without creating an output message. |
DataUpdate node | Use this node to update one or more rows in a database table without creating an output message. |
Extract node | Use this node to create a new output message that contains a subset of the contents of the input message. Use the Extract node only if no database is involved in the map |
Mapping node | Use this node to construct a new output message and populate it with information that is new, modified from the input message, or taken from a database. Use the Mapping node only if no database is involved in the map. |
Warehouse node | Use this node to store all or part of a message in a database table without creating an output message. |
You can use built-in ESQL functions and statements to define message mappings, and you can use your own ESQL functions.
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