org.qtitools.qti.value
Class DirectedPairValue

java.lang.Object
  org.qtitools.qti.value.SingleValue
      org.qtitools.qti.value.AbstractPairValue
          org.qtitools.qti.value.DirectedPairValue

All Implemented Interfaces:

java.io.Serializable, Value

public class DirectedPairValue
extends AbstractPairValue

Implementation of BaseType directedPair value.

A space separated list of two identifier values with the source identifier first, followed by the destination identifier.

Example values: 'A B', 'choice5 choice1', 'apple fruit', 'carrot vegetable'. Character ' is not part of directedPair value.

This class is not mutable and cannot contain NULL value.

Cardinality of this class is always single and BaseType is always directedPair.

Author:

Jiri Kajaba

See Also:

Cardinality, BaseType, IdentifierValue, Serialized Form

Field Summary

Fields inherited from class org.qtitools.qti.value.AbstractPairValue

destValue, sourceValue

Constructor Summary

DirectedPairValue(java.lang.String value)
Constructs DirectedPairValue from given String representation.

DirectedPairValue(java.lang.String sourceValue, java.lang.String destValue)
Constructs DirectedPairValue from given pair of identifiers.

Method Summary

boolean	equals(java.lang.Object object)
BaseType	getBaseType() Returns baseType of this value.
boolean	isDirected() Returns true if this pair is directed false otherwise.

Methods inherited from class org.qtitools.qti.value.AbstractPairValue

destValue, hashCode, sourceValue, toString

Methods inherited from class org.qtitools.qti.value.SingleValue

getCardinality, isNull

Methods inherited from class java.lang.Object

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

Constructor Detail

DirectedPairValue

public DirectedPairValue(java.lang.String sourceValue,
                         java.lang.String destValue)

Constructs DirectedPairValue from given pair of identifiers.

Parameters:

sourceValue - source (first) identifier

destValue - destination (second) identifier

DirectedPairValue

public DirectedPairValue(java.lang.String value)
                  throws QTIParseException

Constructs DirectedPairValue from given String representation.

Parameters:

value - String representation of DirectedPairValue

Throws:

QTIParseException - if String representation of DirectedPairValue is not valid

Method Detail

getBaseType

public BaseType getBaseType()

Description copied from interface: Value

Returns baseType of this value.

If value is NULL or record cardinality returns null.

Returns:

baseType of this value

isDirected

public boolean isDirected()

Description copied from class: AbstractPairValue

Returns true if this pair is directed false otherwise.

Specified by:

isDirected in class AbstractPairValue

Returns:

true if this pair is directed false otherwise

equals

public boolean equals(java.lang.Object object)

Overrides:

equals in class java.lang.Object