public void initAggregateValue(final AggregateValue aggregateValue) throws HBqlException {
switch (this.getFunctionType()) {
case COUNT:
{
aggregateValue.setValue(0L);
break;
}
case MIN:
case MAX:
{
break;
}
default:
throw new InternalErrorException("Invalid aggregate function: " + this.getFunctionType());
}
}
public void applyResultToAggregateValue(final AggregateValue aggVal, final Result result)
throws HBqlException, ResultMissingColumnException, NullColumnValueException {
switch (this.getFunctionType()) {
case COUNT:
{
final long currval = (Long) aggVal.getCurrentValue();
aggVal.setValue(currval + 1);
break;
}
case MIN:
{
final Number v1 = (Number) this.getExprArg(0).getValue(null, result);
if (v1 instanceof Short) {
final short val = v1.shortValue();
aggVal.setValue(aggVal.isValueSet() ? Math.min(val, (Short) aggVal.getValue()) : val);
} else if (v1 instanceof Integer) {
final int val = v1.intValue();
aggVal.setValue(aggVal.isValueSet() ? Math.min(val, (Integer) aggVal.getValue()) : val);
} else if (v1 instanceof Long) {
final long val = v1.longValue();
aggVal.setValue(aggVal.isValueSet() ? Math.min(val, (Long) aggVal.getValue()) : val);
} else if (v1 instanceof Float) {
final float val = v1.floatValue();
aggVal.setValue(aggVal.isValueSet() ? Math.min(val, (Float) aggVal.getValue()) : val);
} else if (v1 instanceof Double) {
final double val = v1.doubleValue();
aggVal.setValue(aggVal.isValueSet() ? Math.min(val, (Double) aggVal.getValue()) : val);
}
break;
}
case MAX:
{
final Number v1 = (Number) this.getExprArg(0).getValue(null, result);
if (v1 instanceof Short) {
final short val = v1.shortValue();
aggVal.setValue(aggVal.isValueSet() ? Math.max(val, (Short) aggVal.getValue()) : val);
} else if (v1 instanceof Integer) {
final int val = v1.intValue();
aggVal.setValue(aggVal.isValueSet() ? Math.max(val, (Integer) aggVal.getValue()) : val);
} else if (v1 instanceof Long) {
final long val = v1.longValue();
aggVal.setValue(aggVal.isValueSet() ? Math.max(val, (Long) aggVal.getValue()) : val);
} else if (v1 instanceof Float) {
final float val = v1.floatValue();
aggVal.setValue(aggVal.isValueSet() ? Math.max(val, (Float) aggVal.getValue()) : val);
} else if (v1 instanceof Double) {
final double val = v1.doubleValue();
aggVal.setValue(aggVal.isValueSet() ? Math.max(val, (Double) aggVal.getValue()) : val);
}
break;
}
default:
throw new InternalErrorException("Invalid aggregate function: " + this.getFunctionType());
}
}
