be.SIRAPRISE.ra

Class DIVIDEBYPER

java.lang.Object

be.SIRAPRISE.ra.RelationalOperator

be.SIRAPRISE.ra.DIVIDEBYPER

public abstract class DIVIDEBYPER
extends RelationalOperator

DIVIDEBYPER

Author:

erwin

Constructor Summary

Constructors

Constructor and Description
DIVIDEBYPER()

Method Summary

Modifier and Type	Method and Description
static Relation	computeDividebyper(Relation dividend, Relation divisor, Relation per) Computes the division of 'dividend' by 'divisor' per 'per'
int	getMaximumArgumentCount() Gets the maximum argument count for this operator.
int	getMinimumArgumentCount() Gets the minimum argument count for this operator.
java.lang.String	getName() Gets the operator name
boolean	isMonoRelationOperator() Checks if the operator takes only one Relation as input
static DIVIDEBYPERInvocationResultDetails	validateExpressionDetails(Heading dividendHeading, Heading divisorHeading, Heading perHeading)

Methods inherited from class be.SIRAPRISE.ra.RelationalOperator

toString

Methods inherited from class java.lang.Object

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

Constructor Detail

DIVIDEBYPER

public DIVIDEBYPER()

Method Detail

computeDividebyper

public static Relation computeDividebyper(Relation dividend,
                                          Relation divisor,
                                          Relation per)
                                   throws ValidationException,
                                          EvaluationException

Computes the division of 'dividend' by 'divisor' per 'per'

Parameters:

dividend - The dividend

divisor - the divisor

per - The per relation

Returns:

the division of 'dividend' by 'divisor' per 'per'

Throws:

ValidationException - if the given relation arguments do not satisfy the compatibility rules for DIVIDEBYPER

EvaluationException - If the evaluation failed for any reason

validateExpressionDetails

public static DIVIDEBYPERInvocationResultDetails validateExpressionDetails(Heading dividendHeading,
                                                                           Heading divisorHeading,
                                                                           Heading perHeading)
                                                                    throws DivideByPerIncompatibleDividendPerHeadings,
                                                                           DivideByPerIncompatibleDivisorPerHeadings

Parameters:

dividendHeading - The heading of the dividend

divisorHeading - The heading of the divisor

perHeading - The heading of the 'per' relation

Returns:

the technical details of the invocation of relational division on these types of relation

Throws:

DivideByPerIncompatibleDividendPerHeadings - If any of the common attributes between dividend and per do not share a common supertype

DivideByPerIncompatibleDivisorPerHeadings - If any of the common attributes between divisor and per do not share a common supertype

getMaximumArgumentCount

public final int getMaximumArgumentCount()

Description copied from class: RelationalOperator

Gets the maximum argument count for this operator. Note that stuff like rename lists are regarded as an argument as far as this count is concerned

Specified by:

getMaximumArgumentCount in class RelationalOperator

Returns:

the maximum argument count for this operator.

getMinimumArgumentCount

public final int getMinimumArgumentCount()

Description copied from class: RelationalOperator

Gets the minimum argument count for this operator. Note that stuff like rename lists are regarded as an argument as far as this count is concerned

Specified by:

getMinimumArgumentCount in class RelationalOperator

Returns:

the minimum argument count for this operator

getName

public final java.lang.String getName()

Description copied from class: RelationalOperator

Gets the operator name

Specified by:

getName in class RelationalOperator

Returns:

the operator name

isMonoRelationOperator

public final boolean isMonoRelationOperator()

Description copied from class: RelationalOperator

Checks if the operator takes only one Relation as input

Specified by:

isMonoRelationOperator in class RelationalOperator

Returns:

true if the operator takes only one Relation as input