io.crate.operation.scalar.arithmetic

Class RandomFunction

java.lang.Object

io.crate.metadata.Scalar<java.lang.Double,java.lang.Void>

io.crate.operation.scalar.arithmetic.RandomFunction

All Implemented Interfaces:

FunctionImplementation<Function>

public class RandomFunction
extends Scalar<java.lang.Double,java.lang.Void>

Field Summary

Fields

Modifier and Type	Field and Description
protected static FunctionInfo	info
static java.lang.String	NAME

Constructor Summary

Constructors

Constructor and Description
RandomFunction()

Method Summary

Modifier and Type	Method and Description
java.lang.Double	evaluate(Input[] args)
FunctionInfo	info()
Symbol	normalizeSymbol(Function symbol, TransactionContext transactionContext) Normalize a symbol into a simplified form.
static void	register(ScalarFunctionModule module)

Methods inherited from class io.crate.metadata.Scalar

anyNonLiterals, compile, containsNullLiteral

Methods inherited from class java.lang.Object

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

Field Detail

NAME

public static final java.lang.String NAME

See Also:

Constant Field Values

info

protected static final FunctionInfo info

Constructor Detail

RandomFunction

public RandomFunction()

Method Detail

register

public static void register(ScalarFunctionModule module)

normalizeSymbol

public Symbol normalizeSymbol(Function symbol,
                              TransactionContext transactionContext)

Description copied from interface: FunctionImplementation

Normalize a symbol into a simplified form. This may return the symbol as is if it cannot be normalized.

Specified by:

normalizeSymbol in interface FunctionImplementation<Function>

Overrides:

normalizeSymbol in class Scalar<java.lang.Double,java.lang.Void>

transactionContext - context which is shared across normalizeSymbol calls during a statement-lifecycle. This will only be present if normalizeSymbol is called on the handler node. normalizeSymbol calls during execution won't receive a StmtCtx

info

public FunctionInfo info()

evaluate

public java.lang.Double evaluate(Input[] args)

Specified by:

evaluate in class Scalar<java.lang.Double,java.lang.Void>