jade.content.abs

Class AbsPredicate

java.lang.Object

jade.content.abs.AbsObjectImpl

jade.content.abs.AbsPrimitiveSlotsHolder

jade.content.abs.AbsPredicate

All Implemented Interfaces:

AbsContentElement, AbsObject, ContentElement, Predicate, Serializable

public class AbsPredicate
extends AbsPrimitiveSlotsHolder
implements AbsContentElement, Predicate

An abstract descriptor that can hold a predicate expression.

Author:

Paola Turci, Federico Bergenti - Universita` di Parma

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
private static Class	absPredicateClass
private boolean	isAContentExpression
private boolean	isMeta

Fields inherited from interface jade.content.abs.AbsObject

ABS_AGENT_ACTION, ABS_AGGREGATE, ABS_CONCEPT, ABS_CONCEPT_SLOT_FUNCTION, ABS_CONTENT_ELEMENT_LIST, ABS_IRE, ABS_PREDICATE, ABS_PRIMITIVE, ABS_VARIABLE, UNKNOWN

Constructor Summary

Constructors

Constructor and Description
AbsPredicate(String typeName) Construct an Abstract descriptor to hold a predicate of the proper type (e.g.

Method Summary

Modifier and Type	Method and Description
AbsTerm	getAbsTerm(String name) Gets the value (casted as an AbsTerm) of an attribute of the predicate held by this abstract descriptor.
int	getAbsType()
static Class	getJavaClass()
boolean	isAContentExpression() Return true if this Abstract Content Element represents a ContentExpression of the SL Grammar (see also FIPA-SL specifications).
boolean	isMetaFormula() Return true if this object represents a meta formula (symbol ??x) rather than a concrete formula.
void	set(String name, AbsObject value) Sets an attribute of the predicate held by this abstract descriptor.
void	setIsAContentExpression(boolean flag) Set the isAContentExpression flag to the passed value.
void	setIsMetaFormula(boolean isMeta) Sets the value of isMetaFormula, where the default is false.

Methods inherited from class jade.content.abs.AbsPrimitiveSlotsHolder

getBoolean, getByteSequence, getDate, getDouble, getFloat, getInteger, getLong, getString, set, set, set, set, set, set, set, set

Methods inherited from class jade.content.abs.AbsObjectImpl

equals, getAbsObject, getCount, getNames, getTypeName, hashCode, isGrounded, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface jade.content.abs.AbsObject

getAbsObject, getCount, getNames, getTypeName, isGrounded

Field Detail

isAContentExpression

private boolean isAContentExpression

isMeta

private boolean isMeta

absPredicateClass

private static Class absPredicateClass

Constructor Detail

AbsPredicate

public AbsPredicate(String typeName)

Construct an Abstract descriptor to hold a predicate of the proper type (e.g. FATHER_OF, WORKS_FOR...).

Parameters:

typeName - The name of the type of the predicate held by this abstract descriptor.

Method Detail

set

public void set(String name,
                AbsObject value)

Sets an attribute of the predicate held by this abstract descriptor.

Overrides:

set in class AbsPrimitiveSlotsHolder

Parameters:

name - The name of the attribute to be set.

value - The new value of the attribute.

getAbsTerm

public AbsTerm getAbsTerm(String name)

Gets the value (casted as an AbsTerm) of an attribute of the predicate held by this abstract descriptor. This method is here mainly for backward compatibility.

Parameters:

name - The name of the attribute.

Returns:

value The value of the attribute.

getJavaClass

public static Class getJavaClass()

isAContentExpression

public boolean isAContentExpression()

Description copied from interface: AbsContentElement

Return true if this Abstract Content Element represents a ContentExpression of the SL Grammar (see also FIPA-SL specifications).

Specified by:

isAContentExpression in interface AbsContentElement

Returns:

true if this Abstract Content Element represents a ContentExpression of the SL Grammar (see also FIPA-SL specifications), false otherwise

See Also:

AbsContentElement.isAContentExpression

setIsAContentExpression

public void setIsAContentExpression(boolean flag)

Description copied from interface: AbsContentElement

Set the isAContentExpression flag to the passed value. By default, if this method was not called, this value is intialized to false.

Specified by:

setIsAContentExpression in interface AbsContentElement

Parameters:

flag - true if this Abstract Content Element represents a ContentExpression of the SL Grammar (see also FIPA-SL specifications), false otherwise

See Also:

AbsContentElement.setIsAContentExpression(boolean flag)

isMetaFormula

public final boolean isMetaFormula()

Return true if this object represents a meta formula (symbol ??x) rather than a concrete formula. This method is currently used only by the semantics framework.

Returns:

true if this object represents a meta formula

Since:

JADE3.4

setIsMetaFormula

public final void setIsMetaFormula(boolean isMeta)

Sets the value of isMetaFormula, where the default is false. This method is currently used only by the semantics framework.

Since:

JADE3.4

getAbsType

public int getAbsType()

Specified by:

getAbsType in interface AbsObject

Overrides:

getAbsType in class AbsObjectImpl