Class symantec.itools.db.beans.brl.derivation.DerivationHelper 
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Class symantec.itools.db.beans.brl.derivation.DerivationHelper 

Object
   |
   +----symantec.itools.db.beans.brl.derivation.DerivationHelper
public class DerivationHelper
extends Object
Helper class used by all derivation formulas

Version:
1.0 07/23/98
Author:
Puru Balakrishnan

Variable Index

o EXCPTITLE
o logWinHelper

Constructor Index

o symantec.itools.db.beans.brl.derivation.DerivationHelper()
Default constructor

Method Index

o calculate(ComputeRow, int, int)
Method which actually does the calculation for different operators
o convertNumberToDesiredType(Object, int, int)
o convertRow(ComputeRow)
o getPromotedDataType(Vector)
o performCalculation(Vector, int, int)
o performCalculationForDouble(Vector, int)
o performCalculationForLong(Vector, int)
o promoteObjectsToType(Vector, int)

Variables

o EXCPTITLE 
protected static java.lang.String EXCPTITLE
o logWinHelper 
protected symantec.itools.db.beans.util.LogWindowHelper logWinHelper

Constructors

o DerivationHelper 
public DerivationHelper()
Default constructor

Methods

o calculate 
public java.lang.Object calculate(ComputeRow inputRow,
                                  int outputDataType,
                                  int operatorType)
Method which actually does the calculation for different operators

Parameters:
ComputeRow - row containing all inputs
int - specifying type of change performed
int - specifying the desired output data type
int - specifying the type of operator
Returns:
Object after performing the specified operation
o convertNumberToDesiredType 
protected java.lang.Object convertNumberToDesiredType(Object source,
                                                      int promotedType,
                                                      int type)
o convertRow 
protected java.util.Vector convertRow(ComputeRow inputRow)
o getPromotedDataType 
protected int getPromotedDataType(Vector vObjs)
o performCalculation 
protected java.lang.Object performCalculation(Vector vObjValues,
                                              int promotedType,
                                              int operatorType)
o performCalculationForDouble 
protected java.lang.Object performCalculationForDouble(Vector vObjValues,
                                                       int operatorType)
o performCalculationForLong 
protected java.lang.Object performCalculationForLong(Vector vObjValues,
                                                     int operatorType)
o promoteObjectsToType 
protected java.util.Vector promoteObjectsToType(Vector orig,
                                                int type)

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