drvgraph.j2d
Class Rule

java.lang.Object
  java.awt.geom.RectangularShape
      java.awt.geom.Ellipse2D
          java.awt.geom.Ellipse2D.Float
              drvgraph.j2d.Rule

All Implemented Interfaces:

java.awt.Shape, java.io.Serializable, java.lang.Cloneable, java.lang.Comparable

public class Rule
extends java.awt.geom.Ellipse2D.Float
implements java.lang.Comparable

Represents the rule.
Rules consist of a body and a head. The former represents the "IF" part of the rule and consists of one or more atomic formulae, while the latter represents the "THEN" part of the rule and consists of a single atomic formula.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class java.awt.geom.Ellipse2D

java.awt.geom.Ellipse2D.Double, java.awt.geom.Ellipse2D.Float

Field Summary

static java.lang.String	DEFEASIBLERULE Defeasible rule type.
static java.lang.String	DEFEATER Defeater rule type.
static java.lang.String	STRICTRULE Strict rule type.

Fields inherited from class java.awt.geom.Ellipse2D.Float

height, width, x, y

Constructor Summary

Rule()
Constructs an empty strict rule with no name.

Rule(java.lang.String ruleId)
Constructs a new strict rule with a given name (rule ID).

Rule(java.lang.String ruleId, java.lang.String ruleType)
Constructs a new rule with a given name (rule ID) and a specified rule type.

Method Summary

int	compareTo(java.lang.Object another) Compares this rule with a given rule.
java.lang.String	getRuleId() Returns the rule ID.
java.lang.String	getRuleType() Returns the rule type.
boolean	isSelected() Checks if the rule is selected.
void	paint(java.awt.Graphics g) Draws the rule circle.
void	setRuleId(java.lang.String ruleId) Sets the rule ID.
void	setRuleType(java.lang.String ruleType) Sets the rule type.
void	setSelected(boolean b) Sets the "selected" status of the rule.

Methods inherited from class java.awt.geom.Ellipse2D.Float

getBounds2D, getHeight, getWidth, getX, getY, isEmpty, setFrame, setFrame

Methods inherited from class java.awt.geom.Ellipse2D

contains, contains, equals, getPathIterator, hashCode, intersects

Methods inherited from class java.awt.geom.RectangularShape

clone, contains, contains, getBounds, getCenterX, getCenterY, getFrame, getMaxX, getMaxY, getMinX, getMinY, getPathIterator, intersects, setFrame, setFrame, setFrameFromCenter, setFrameFromCenter, setFrameFromDiagonal, setFrameFromDiagonal

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

STRICTRULE

public static final java.lang.String STRICTRULE

Strict rule type.

See Also:

Constant Field Values

DEFEASIBLERULE

public static final java.lang.String DEFEASIBLERULE

Defeasible rule type.

See Also:

Constant Field Values

DEFEATER

public static final java.lang.String DEFEATER

Defeater rule type.

See Also:

Constant Field Values

Constructor Detail

Rule

public Rule()

Constructs an empty strict rule with no name.

Rule

public Rule(java.lang.String ruleId)

Constructs a new strict rule with a given name (rule ID). Each rule is defined uniquely by its name; therefore no two or more rules with the same name should exist.

Parameters:

ruleId - the string representing the rule ID

Rule

public Rule(java.lang.String ruleId,
            java.lang.String ruleType)

Constructs a new rule with a given name (rule ID) and a specified rule type. Each rule is defined uniquely by its name; therefore no two or more rules with the same name should exist.

Parameters:

ruleType - the string representing the rule type

ruleId - the string representing the rule ID

Method Detail

setSelected

public void setSelected(boolean b)

Sets the "selected" status of the rule. Its value can either be "true" or "false".

Parameters:

b - the "selected" status flag (true|false)

isSelected

public boolean isSelected()

Checks if the rule is selected.

Returns:

the rule "selected" status

paint

public void paint(java.awt.Graphics g)

Draws the rule circle.

Parameters:

g - the Graphics component that draws the rule circle

See Also:

Graphics

compareTo

public int compareTo(java.lang.Object another)
              throws java.lang.ClassCastException

Compares this rule with a given rule.

Specified by:

compareTo in interface java.lang.Comparable

Parameters:

another - the rule to compare this rule to

Returns:

the comparison outcome: 0 if the two rules are identical, -1 otherwise

Throws:

java.lang.ClassCastException - A ClassCastException is thrown if the Object to compare this object to belongs to a different class.

getRuleId

public java.lang.String getRuleId()

Returns the rule ID.

Returns:

the string representing the rule ID

setRuleId

public void setRuleId(java.lang.String ruleId)

Sets the rule ID.

Parameters:

ruleId - the rule ID value to set.

getRuleType

public java.lang.String getRuleType()

Returns the rule type.

Returns:

the string representing the rule type

setRuleType

public void setRuleType(java.lang.String ruleType)

Sets the rule type.

Parameters:

ruleType - the rule type to set.