org.qtitools.qti.value
Class AbstractPairValue

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

All Implemented Interfaces:

java.io.Serializable, Value

Direct Known Subclasses:

DirectedPairValue, PairValue

public abstract class AbstractPairValue
extends SingleValue

Superclass for pair and directedPair values.

Classes PairValue and DirectedPairValue have different only isDirected and equals methods.

This class is not mutable and cannot contain NULL value.

Cardinality of this class is always single.

Author:

Jiri Kajaba

See Also:

Cardinality, Serialized Form

Field Summary

protected java.lang.String	destValue Destination value.
protected java.lang.String	sourceValue Source value.

Constructor Summary

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

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

Method Summary

java.lang.String	destValue() Returns destination (second) identifier.
int	hashCode()
abstract boolean	isDirected() Returns true if this pair is directed false otherwise.
java.lang.String	sourceValue() Returns source (first) identifier.
java.lang.String	toString()

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

getCardinality, isNull

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.qtitools.qti.value.Value

getBaseType

Field Detail

sourceValue

protected java.lang.String sourceValue

Source value.

destValue

protected java.lang.String destValue

Destination value.

Constructor Detail

AbstractPairValue

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

Constructs AbstractPairValue from given pair of identifiers.

Parameters:

sourceValue - source (first) identifier

destValue - destination (second) identifier

AbstractPairValue

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

Constructs AbstractPairValue from given String representation.

Parameters:

value - String representation of AbstractPairValue

Throws:

QTIParseException - if String representation of AbstractPairValue is not valid

Method Detail

isDirected

public abstract boolean isDirected()

Returns true if this pair is directed false otherwise.

Returns:

true if this pair is directed false otherwise

sourceValue

public java.lang.String sourceValue()

Returns source (first) identifier.

Returns:

source (first) identifier

destValue

public java.lang.String destValue()

Returns destination (second) identifier.

Returns:

destination (second) identifier

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object