The CREATE MODULE statement creates a module, which is a named container associated with a node.
A module in the Eclipse tools is referred to from a message processing node by name. The module must be in the <node schema>.
The modules for the Compute node, Database node, and Filter node all contain a function that returns a boolean. The special module routine is named Main and it is the entry point for a message flow node to process the ESQL routines defined within a module for the node. At most, one Main function is allowed in a module.
Correlation name | Compute module | Filter module | Database module |
---|---|---|---|
Database | × | × | × |
Environment | × | × | × |
Root | × | × | |
Body | × | × | |
Properties | × | × | |
DestinationList | × | × | |
ExceptionList | × | × | |
LocalEnvironment | × | × | |
InputRoot | × | ||
InputBody | × | ||
InputProperties | × | ||
InputDestinationList | × | ||
InputExceptionList | × | ||
InputLocalEnvironment | × | ||
OutputRoot | × | ||
OutputDestinationList | × | ||
OutputExceptionList | × | ||
OutputLocalEnvironment | × |
Related concepts
ESQL
Related tasks
Developing ESQL
Related reference
Syntax preference
ESQL statements
BROKER SCHEMA statement
PATH clause
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