org.apache.cassandra.cql3.functions

Class NativeFunction

java.lang.Object

org.apache.cassandra.cql3.functions.AbstractFunction

org.apache.cassandra.cql3.functions.NativeFunction

All Implemented Interfaces:

AssignmentTestable, Function

Direct Known Subclasses:

NativeAggregateFunction, NativeScalarFunction

public abstract class NativeFunction
extends AbstractFunction

Base class for our native/hardcoded functions.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.cassandra.cql3.AssignmentTestable

AssignmentTestable.TestResult

Field Summary

Fields inherited from class org.apache.cassandra.cql3.functions.AbstractFunction

argTypes, name, returnType

Fields inherited from interface org.apache.cassandra.cql3.functions.Function

UNRESOLVED

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	NativeFunction(java.lang.String name, AbstractType<?> returnType, AbstractType<?>... argTypes)

Method Summary

Modifier and Type	Method and Description
boolean	isNative() Checks whether the function is a native/hard coded one or not.
boolean	isPure() Checks whether the function is a pure function (as in doesn't depend on, nor produces side effects) or not.

Methods inherited from class org.apache.cassandra.cql3.functions.AbstractFunction

addFunctionsTo, argTypes, argumentsList, columnName, elementKeyspace, elementName, equals, hashCode, name, referencesUserType, returnType, testAssignment, toCqlString, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.cassandra.cql3.functions.Function

compare, isAggregate

Constructor Detail

NativeFunction

protected NativeFunction(java.lang.String name,
                         AbstractType<?> returnType,
                         AbstractType<?>... argTypes)

Method Detail

isNative

public boolean isNative()

Description copied from interface: Function

Checks whether the function is a native/hard coded one or not.

Returns:

true if the function is a native/hard coded one, false otherwise.

isPure

public boolean isPure()

Description copied from interface: Function

Checks whether the function is a pure function (as in doesn't depend on, nor produces side effects) or not.

Returns:

true if the function is a pure function, false otherwise.