Examples with OrderModifier org.apache.asterix.lang.common.clause.OrderbyClause.OrderModifier used on opensource projects

Example 1 with OrderModifier

use of org.apache.asterix.lang.common.clause.OrderbyClause.OrderModifier in project asterixdb by apache.

the class FormatPrintVisitor method visit.

@Override
public Void visit(OrderbyClause oc, Integer step) throws CompilationException {
    out.print(skip(step) + "order by ");
    List<OrderModifier> mlist = oc.getModifierList();
    List<Expression> list = oc.getOrderbyList();
    int index = 0;
    int size = list.size();
    for (Expression expr : oc.getOrderbyList()) {
        expr.accept(this, step);
        OrderModifier orderModifier = mlist.get(index);
        if (orderModifier != OrderModifier.ASC) {
            out.print(" " + orderModifier.toString().toLowerCase());
        }
        if (++index < size) {
            out.print(COMMA);
        }
    }
    out.println();
    return null;
}

Example 2 with OrderModifier

use of org.apache.asterix.lang.common.clause.OrderbyClause.OrderModifier in project asterixdb by apache.

the class LangExpressionToPlanTranslator method visit.

@Override
public Pair<ILogicalOperator, LogicalVariable> visit(OrderbyClause oc, Mutable<ILogicalOperator> tupSource) throws CompilationException {
    OrderOperator ord = new OrderOperator();
    Iterator<OrderModifier> modifIter = oc.getModifierList().iterator();
    Mutable<ILogicalOperator> topOp = tupSource;
    for (Expression e : oc.getOrderbyList()) {
        Pair<ILogicalExpression, Mutable<ILogicalOperator>> p = langExprToAlgExpression(e, topOp);
        OrderModifier m = modifIter.next();
        OrderOperator.IOrder comp = (m == OrderModifier.ASC) ? OrderOperator.ASC_ORDER : OrderOperator.DESC_ORDER;
        ord.getOrderExpressions().add(new Pair<>(comp, new MutableObject<>(p.first)));
        topOp = p.second;
    }
    ord.getInputs().add(topOp);
    if (oc.getNumTuples() > 0) {
        ord.getAnnotations().put(OperatorAnnotations.CARDINALITY, oc.getNumTuples());
    }
    if (oc.getNumFrames() > 0) {
        ord.getAnnotations().put(OperatorAnnotations.MAX_NUMBER_FRAMES, oc.getNumFrames());
    }
    if (oc.getRangeMap() != null) {
        Iterator<OrderModifier> orderModifIter = oc.getModifierList().iterator();
        boolean ascending = (orderModifIter.next() == OrderModifier.ASC);
        RangeMapBuilder.verifyRangeOrder(oc.getRangeMap(), ascending);
        ord.getAnnotations().put(OperatorAnnotations.USE_RANGE_CONNECTOR, oc.getRangeMap());
    }
    return new Pair<>(ord, null);
}