public List<Attribute> getAttributes() {
ArrayList<Attribute> attributes = new ArrayList<Attribute>();
for (int i = bits.nextSetBit(0); i >= 0; i = bits.nextSetBit(i + 1)) {
attributes.add(schema.getAttributes().get(i));
}
return attributes;
}
public AggregateImpl(Schema schema, BitSetPlus bits) {
this.schema = schema;
this.bits = bits;
this.rowCount = schema.getStatisticsProvider().getRowCount(getAttributes());
if (false) {
System.out.println("AggregateImpl: " + getDescription() + " bits=" + bits);
}
}
public double estimateSpace() {
return estimateRowCount() * schema.getStatisticsProvider().getSpace(getAttributes());
}
public List<Measure> getMeasures() {
return schema.getMeasures();
}