Package org.apache.flink.table.functions

package org.apache.flink.table.functions

Class	Description
BuiltInFunctionDefinitions	Dictionary of function definitions for all built-in functions.
FunctionContext	A FunctionContext allows to obtain global runtime information about the context in which the user-defined function is executed.
FunctionDefinition	Definition of a function.
FunctionKind	Categorizes the semantics of a FunctionDefinition.
ProcessTableFunction<T>	Base class for a user-defined process table function (PTF).
ProcessTableFunction.Context	Context that can be added as a first argument to the eval() method for additional information about the input tables and other services provided by the framework.
ProcessTableFunction.OnTimerContext	Special ProcessTableFunction.Context that is available when the onTimer() method is called.
ProcessTableFunction.TimeContext<TimeType>	A context that gives access to Flink's concepts of time and timers.
ScalarFunction	Base class for a user-defined scalar function.
TableFunction<T>	Base class for a user-defined table function.
TableSemantics	Provides call information about the table that has been passed to a table argument.
TableSemantics.SortDirection	The sort direction for ORDER BY columns in table arguments with set semantics.
TemporalTableFunction	Class representing temporal table function over some history table.
UserDefinedFunction	Base class for all user-defined functions.