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com.oracle.cep.cartridge
Interface ExternalFunction

public interface ExternalFunction

extends ExternalFunctionDefinition

ExternalFunctions are functions used within CQL queries and views that are provided by an external entity, such as an ExternalFunctionProvider.

See Also:

ExternalFunctionProvider

Method Summary

java.lang.Object

execute(java.lang.Object[] args, java.lang.String caller, java.util.Map context) Execute runtime function implementation for simple functions (e.g. non aggregate functions).

Methods inherited from interface com.oracle.cep.cartridge.ExternalFunctionDefinition

getName, getParameterTypes, getReturnType

Method Detail

execute

public java.lang.Object execute(java.lang.Object[] args,
                                java.lang.String caller,
                                java.util.Map context)
                         throws java.lang.Exception

Execute runtime function implementation for simple functions (e.g. non aggregate functions).
Table functions should return a Collection of objects.

Parameters:

args - function arguments

caller - The caller of the CQL query/view, generally being the application name.

context - Additional context provided by the caller.

Returns:

function's result or collection of results.

See Also:

Collection