be.SIRAPRISE.typeimplementations
Class DATESHIFT_DATE_INT_INT_INT

java.lang.Object
  be.SIRAPRISE.typeimplementations.DATESHIFT_DATE_INT_INT_INT

All Implemented Interfaces:

OperatorImplementation, OperatorImplementation_V0104

public final class DATESHIFT_DATE_INT_INT_INT
extends java.lang.Object
implements OperatorImplementation_V0104

The DATESHIFT operator computes a date that is a given quantity of days, months, years away from a given date

Author:

Erwin Smout

Constructor Summary

DATESHIFT_DATE_INT_INT_INT()

Method Summary

ValueBuffer	executeOperator(java.util.LinkedList<ValueBuffer> args) The DATESHIFT operator computes a date that is a given quantity of days, months, years away from a given date
java.lang.String[]	getArgumentTypeNames() DATESHIFT takes a DATE argument plus three INT arguments.
java.lang.String	getReturnTypeName() DATESHIFT returns a DATE
boolean	isDeterministic() Tells whether the operator is deterministic with respect to the arguments of its invocations.

Methods inherited from class java.lang.Object

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

Constructor Detail

DATESHIFT_DATE_INT_INT_INT

public DATESHIFT_DATE_INT_INT_INT()

Method Detail

executeOperator

public ValueBuffer executeOperator(java.util.LinkedList<ValueBuffer> args)

The DATESHIFT operator computes a date that is a given quantity of days, months, years away from a given date

Specified by:

executeOperator in interface OperatorImplementation

Parameters:

args - the argument list. The list must hold as many ValueBuffer objects as there are arguments to the operator, and each ValueBuffer object holds a value for some argument to the operator. ValueBuffer objects on the list must appear in the same order as the operator argument declarations.

Returns:

A ValueBuffer object holding the result value of the operator execution in internal format.

getArgumentTypeNames

public java.lang.String[] getArgumentTypeNames()

DATESHIFT takes a DATE argument plus three INT arguments.

Specified by:

getArgumentTypeNames in interface OperatorImplementation

Returns:

The names of the argument types

getReturnTypeName

public java.lang.String getReturnTypeName()

DATESHIFT returns a DATE

Specified by:

getReturnTypeName in interface OperatorImplementation

Returns:

the name of the type of the return value

isDeterministic

public boolean isDeterministic()

Description copied from interface: OperatorImplementation_V0104

Tells whether the operator is deterministic with respect to the arguments of its invocations. An operator is deterministic if and only if for any two distinct invocations, if all the argument values are the same, then the result value returned will also be the same. An example of a nondeterministic operators is RANDOM().

Specified by:

isDeterministic in interface OperatorImplementation_V0104

Returns:

true if the operator is deterministic.