Package org.apache.cassandra.cql3.functions

Class NativeFunctions

java.lang.Object

org.apache.cassandra.cql3.functions.NativeFunctions

public class NativeFunctions
extends Object

A container of native functions. It stores both pre-built function overloads (NativeFunction) and dynamic generators of functions (FunctionFactory).

Field Summary

Fields

Modifier and Type	Field	Description
static NativeFunctions	instance

Constructor Summary

Constructors

Constructor	Description
NativeFunctions()

Method Summary

Modifier and Type	Method	Description
void	add(FunctionFactory factory)
void	add(NativeFunction function)
void	addAll(NativeFunction... functions)
Collection<FunctionFactory>	getFactories()
Collection<FunctionFactory>	getFactories(FunctionName name)	Returns all the registered functions factories with the specified name.
Collection<NativeFunction>	getFunctions()
Collection<NativeFunction>	getFunctions(FunctionName name)	Returns all the registered pre-built functions overloads with the specified name.
boolean	hasFactory(FunctionName name)	Returns whether there is a function factory with the specified name.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

instance

public static NativeFunctions instance

Constructor Details

NativeFunctions

public NativeFunctions()

Method Details

add

public void add(NativeFunction function)

addAll

public void addAll(NativeFunction... functions)

add

public void add(FunctionFactory factory)

getFunctions

public Collection<NativeFunction> getFunctions(FunctionName name)

Returns all the registered pre-built functions overloads with the specified name.

Parameters:

name - a function name

Returns:

the pre-built functions with the specified name

getFunctions

public Collection<NativeFunction> getFunctions()

Returns:

all the registered pre-built functions.

getFactories

public Collection<FunctionFactory> getFactories(FunctionName name)

Returns all the registered functions factories with the specified name.

Parameters:

name - a function name

Returns:

the function factories with the specified name

getFactories

public Collection<FunctionFactory> getFactories()

Returns:

all the registered functions factories.

hasFactory

public boolean hasFactory(FunctionName name)

Returns whether there is a function factory with the specified name.

Parameters:

name - a function name

Returns:

true if there is a factory with the specified name, false otherwise