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Class WorkingMemory.AVEntry

java.lang.Object

heart.WorkingMemory.AVEntry

Enclosing class:

WorkingMemory

protected class WorkingMemory.AVEntry
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
AVEntry(Attribute attr, Value value)

Method Summary

Modifier and Type	Method and Description
protected Attribute	getAttribute()
protected Value	getValue() It return value of the attribute.
protected void	setAttributeValue(Value value) A method that sets a value of the attribute for a value given as a parameter.

Methods inherited from class java.lang.Object

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

Constructor Detail

AVEntry

public AVEntry(Attribute attr,
               Value value)
        throws NotInTheDomainException

Throws:

NotInTheDomainException

Method Detail

getAttribute

protected Attribute getAttribute()

getValue

protected Value getValue()

It return value of the attribute. It the attribute has callback of type in defined, it obtains the value using this callback. If uses callback if the current value of the attribute is Null, or the value is outadet. All the values that were set in past reasoning cycle are considered outdated. If called from outside the reasoning process (i.e. time is not locked), it does not trigger callabck. Instead the last set value is returned. If the attribute has ambiguous values assigned during the reasoning process, the method resolves the ambiguity, but leaves the list of ambiguous values intact, so that the second call of this method will yeld the same result assuming, no new value was assigned to the working memory.

Returns:

value of the attribute in the entry

See Also:

WorkingMemory.isTimeLocked(), WorkingMemory.lockTime()

setAttributeValue

protected void setAttributeValue(Value value)
                          throws NotInTheDomainException

A method that sets a value of the attribute for a value given as a parameter. The method checks if the value that is to be assigned is in a domain of the attribute type. If not, the NotInTheDomainException is thrown. Casting between SimpleSymbolic and SimpleNumeric is allowed if SimpleSimbolic type is ordered. In every other case, the NotInTheDomainException is thrown. During inference process the method does not assign a value directly to the attribute Instead, it stores the value (or values if multiple rules set the same attribute value) and when getValue() method is called, the ambiguity resolver chooses which value to assign to the attribute. After the getValue() is called, the list of ambiguous values is cleared. The only exception is Null value, that despite not being in any domain can be assigned to the attribute value.

Parameters:

value - to set

Throws:

NotInTheDomainException