public override bool IsDataOk(ParadoxRecord dataRec)
{
var val = dataRec.DataValues[this.DataFieldIndex];
var comp = Comparer.Default.Compare(val, this.Value);
switch (Operator)
{
case ParadoxCompareOperator.Equal:
return(comp == 0);
case ParadoxCompareOperator.NotEqual:
return(comp != 0);
case ParadoxCompareOperator.Greater:
return(comp > 0);
case ParadoxCompareOperator.GreaterOrEqual:
return(comp >= 0);
case ParadoxCompareOperator.Less:
return(comp < 0);
case ParadoxCompareOperator.LessOrEqual:
return(comp <= 0);
default:
throw new NotSupportedException();
}
}
public override bool IsIndexPossible(ParadoxRecord indexRec, ParadoxRecord nextRec)
{
var val1 = indexRec.DataValues[this.DataFieldIndex];
var comp1 = Comparer.Default.Compare(val1, this.Value);
int comp2;
if (nextRec != null)
{
var val2 = nextRec.DataValues[this.DataFieldIndex];
comp2 = Comparer.Default.Compare(val2, this.Value);
}
else
{
comp2 = 1; // last index range ends in infinite
}
switch (Operator)
{
case ParadoxCompareOperator.Equal:
return(comp1 <= 0 && comp2 >= 0);
case ParadoxCompareOperator.NotEqual:
return(comp1 > 0 || comp2 < 0);
case ParadoxCompareOperator.Greater:
return(comp2 > 0);
case ParadoxCompareOperator.GreaterOrEqual:
return(comp2 >= 0);
case ParadoxCompareOperator.Less:
return(comp1 < 0);
case ParadoxCompareOperator.LessOrEqual:
return(comp1 <= 0);
default:
throw new NotSupportedException();
}
}
public abstract bool IsIndexPossible(ParadoxRecord indexRec, ParadoxRecord nextRec);
public abstract bool IsDataOk(ParadoxRecord dataRec);
public override bool IsIndexPossible(ParadoxRecord indexRec, ParadoxRecord nextRec)
{
return(this.Test(c => c.IsIndexPossible(indexRec, nextRec)));
}
public override bool IsDataOk(ParadoxRecord dataRec)
{
return(this.Test(c => c.IsDataOk(dataRec)));
}