edu.wpi.cs.dsrg.xmldb.xat.component.statisticsgatherer
Class IncrementValueByN
java.lang.Object
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+--edu.wpi.cs.dsrg.xmldb.xat.common.operator.XATPropertiesImp
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+--edu.wpi.cs.dsrg.xmldb.xat.common.operator.XATQueryObjectImp
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+--edu.wpi.cs.dsrg.xmldb.xat.component.statisticsgatherer.StatisticsObject
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+--edu.wpi.cs.dsrg.xmldb.xat.component.statisticsgatherer.IncrementValueByN
- public class IncrementValueByN
- extends StatisticsObject
This is the StatisticsObject used for any property that is incremented by
some value. Calling calculateNewValue() will increment by 1. Calling
calculateNewValue(String newValue) will increment by whatever int newValue encodes.
If you need to be able to decrement, you can pass "-1" If you need to increment based on
some other property, then you have to make a seperate StatisticsObject for that purpose.
- See Also:
- Serialized Form
Method Summary |
void |
calculateNewValue()
Calculates the new Value of the given property of this operator. |
void |
calculateNewValue(java.lang.String newValue)
This is semantically the same as calculateNewValue(), but this
provides a parameter which assists in the calculation. |
Methods inherited from class edu.wpi.cs.dsrg.xmldb.xat.component.statisticsgatherer.StatisticsObject |
compareTo,
equals,
getAssociatedQueryObject,
getCategory,
getPropertyName,
getPropertyValue,
setAssociatedQueryObject,
setCategory,
setPropertyName,
setPropertyValue,
toString |
Methods inherited from class java.lang.Object |
clone,
finalize,
getClass,
hashCode,
notify,
notifyAll,
wait,
wait,
wait |
IncrementValueByN
public IncrementValueByN()
- TupleCountStatisticsObject constructor comment.
IncrementValueByN
public IncrementValueByN(java.lang.String name,
XATQueryObject queryObject)
- TupleCountStatisticsObject constructor comment.
- Parameters:
name
- java.lang.StringqueryObject
- edu.wpi.cs.dsrg.xmldb.xat.common.operator.XATQueryObject
calculateNewValue
public void calculateNewValue()
- Calculates the new Value of the given property of this operator. This
should be overwritten by subclasses who can tailor this method to calculating 1
specific property.
This method should update at least the local propertyValue and possibly the
value with the operator The entire StatisticsGatherer is available for assistance.
The procedure for calculating new values should be as follows:
- Consult the associatedOperator or statsTable for any propertyValues that are needed.
- Perform the required calculations using the propertyValues from step 1
- Update the local propertyValue.
- Update the property of the operator iff getCategory() == StatisticsGatherer.OVERALL
and the property is an aggregate value. Otherwise, leave the operator property alone. This
way the operator property's value's represent the OVERALL aggregate values.
- Update the lastTimeUpdated value by using lastTimeUpdated = System.currentTimeMillis();
- Overrides:
- calculateNewValue in class StatisticsObject
calculateNewValue
public void calculateNewValue(java.lang.String newValue)
- This is semantically the same as calculateNewValue(), but this
provides a parameter which assists in the calculation.
Calculates the new Value of the given property of this operator. This
should be overwritten by subclasses who can tailor this method to calculating 1
specific property.
This method should update at least the local propertyValue and possibly the
value with the operator The entire StatisticsGatherer is available for assistance.
The procedure for calculating new values should be as follows:
- Consult the statsTable for any propertyValues that are needed.
- Perform the required calculations using the propertyValues from step 1
- Update the local propertyValue.
- Update the lastTimeUpdated value by using lastTimeUpdated = System.currentTimeMillis();
- Overrides:
- calculateNewValue in class StatisticsObject