FunctionCall

This interface is used by the built-in functions, as well as the user-defined functions.

Methods
Expression[]	getArgs() Get the function arguments.
Expression[]	getArgs() Get the function arguments. Returns: argument list
String	getName() Get the name of the function.
String	getName() Get the name of the function. Returns: the name
String	getSQL() Get the SQL snippet of the function (including arguments).
String	getSQL() Get the SQL snippet of the function (including arguments). Returns: the SQL snippet.
int	getType() Get the data type.
int	getType() Get the data type. Returns: the data type
ValueResultSet	getValueForColumnList(Session session, Expression[] nullArgs) Get an empty result set with the column names set.
ValueResultSet	getValueForColumnList(Session session, Expression[] nullArgs) Get an empty result set with the column names set. Parameters: session - the session nullArgs - the argument list (some arguments may be null) Returns: the empty result set
boolean	isBufferResultSetToLocalTemp() Should the return value ResultSet be buffered in a local temporary file?
boolean	isBufferResultSetToLocalTemp() Should the return value ResultSet be buffered in a local temporary file? Returns: true if it should be.
boolean	isDeterministic() Whether the function always returns the same result for the same parameters.
boolean	isDeterministic() Whether the function always returns the same result for the same parameters. Returns: true if it does
Expression	optimize(Session session) Optimize the function if possible.
Expression	optimize(Session session) Optimize the function if possible. Parameters: session - the session Returns: the optimized expression