oracle.dss.rules.discriminator
Class ValueDiscriminator

java.lang.Object
  |
  +--oracle.dss.rules.discriminator.ValueDiscriminator

All Implemented Interfaces:

java.lang.Cloneable, Discriminator, DiscriminatorXML, java.io.Serializable

Direct Known Subclasses:

DateValueDiscriminator, NumberValueDiscriminator, StringValueDiscriminator

public abstract class ValueDiscriminator

extends java.lang.Object

implements DiscriminatorXML

Abstract Discriminator for a rule that applies based on a comparison of two values. Concrete subclasses of this class specify the kind of value and how the value from the DataView must relate to this value for the DiscriminatorRule to apply. For example, a NumberValueDiscriminator can specify that a DiscriminatorRule should apply to data values greater than 500,000.

This class defines constants for the following relational operators: =, <, <=, >, >=, >, and !=. This class is abstract because it does not define the applies method from the Discriminator interface. Discriminators that extend this class must implement the method.

See Also:

Serialized Form

Field Summary

static int	EQ Equals (=).
static int	GE Greater than or equal to (>=).
static int	GT Greater than (>).
static int	LE Less than or equal to (<=).
static int	LT Less than (<).
static int	NE Not equal (!=).

Constructor Summary

ValueDiscriminator()
Constructor that does not take an operator.

ValueDiscriminator(int relOp)
Constructor that initializes the relational operator.

Method Summary

abstract java.lang.Object	clone() Clones this ValueDiscriminator.
int	getRelOperator() Retrieves the relational operator for this ValueDiscriminator.
void	setRelOperator(int relOp) Specifies the relational operator for this.

Methods inherited from class java.lang.Object

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

Methods inherited from interface oracle.dss.rules.discriminator.DiscriminatorXML

getXML, setXML

Methods inherited from interface oracle.dss.rules.discriminator.Discriminator

applies

Field Detail

EQ

public static final int EQ

Equals (=). The left operand (from the RuleContext) must equal the right operand (from this ValueDiscriminator).

LT

public static final int LT

Less than (<). The left operand (from the RuleContext) must be less than the right operand (from this ValueDiscriminator). For dates, the left operand must be earlier than the right operand.

LE

public static final int LE

Less than or equal to (<=). The left operand (from the RuleContext) must be less than or equal to the right operand (from this ValueDiscriminator). For dates, the left operand must be earlier than or equal to the right operand.

GT

public static final int GT

Greater than (>). The left operand (from the RuleContext) must be greater than the right operand (from this ValueDiscriminator). For dates, the left operand must be later than the right operand.

GE

public static final int GE

Greater than or equal to (>=). The left operand (from the RuleContext) must be greater than or equal to the right operand (from this ValueDiscriminator). For dates, the left operand must be later than or equal to the right operand.

NE

public static final int NE

Not equal (!=). The left operand (from the RuleContext) must not equal the right operand (from this ValueDiscriminator).

Constructor Detail

ValueDiscriminator

public ValueDiscriminator()

Constructor that does not take an operator. If you use this constructor, call the setRelOperator method to specify the relational operator for this ValueDiscriminator.

ValueDiscriminator

public ValueDiscriminator(int relOp)

Constructor that initializes the relational operator.

Parameters:

relOp - A constant that represents the relational operator to use in this ValueDiscriminator.

Method Detail

clone

public abstract java.lang.Object clone()

Clones this ValueDiscriminator.

Specified by:

clone in interface Discriminator

Returns:

The clone of this ValueDiscriminator

getRelOperator

public int getRelOperator()

Retrieves the relational operator for this ValueDiscriminator.

Returns:

A constant that represents the relational operator that is in effect for this ValueDiscriminator. Valid constants are listed in the See Also section.

See Also:

EQ, LT, LE, GT, GE, NE

setRelOperator

public void setRelOperator(int relOp)

Specifies the relational operator for this. ValueDiscriminator.

Parameters:

relOp - A constant that represents the relational operator for this ValueDiscriminator. Valid constants are defined in the See Also section.

See Also:

EQ, LT, LE, GT, GE, NE