Examples with FirstLastValueServerAggregator org.apache.phoenix.expression.aggregator.FirstLastValueServerAggregator used on opensource projects

Example 1 with FirstLastValueServerAggregator

use of org.apache.phoenix.expression.aggregator.FirstLastValueServerAggregator in project phoenix by apache.

the class NthValueFunction method newServerAggregator.

@Override
public Aggregator newServerAggregator(Configuration conf) {
    FirstLastValueServerAggregator aggregator = new FirstLastValueServerAggregator();
    offset = ((Number) ((LiteralExpression) children.get(3)).getValue()).intValue();
    boolean order = (Boolean) ((LiteralExpression) children.get(1)).getValue();
    aggregator.init(children, order, offset);
    return aggregator;
}

Example 2 with FirstLastValueServerAggregator

use of org.apache.phoenix.expression.aggregator.FirstLastValueServerAggregator in project phoenix by apache.

the class FirstValueFunction method newServerAggregator.

@Override
public Aggregator newServerAggregator(Configuration conf) {
    FirstLastValueServerAggregator aggregator = new FirstLastValueServerAggregator();
    boolean order = (Boolean) ((LiteralExpression) children.get(1)).getValue();
    aggregator.init(children, order, 0);
    return aggregator;
}

Example 3 with FirstLastValueServerAggregator

use of org.apache.phoenix.expression.aggregator.FirstLastValueServerAggregator in project phoenix by apache.

the class LastValueFunction method newServerAggregator.

@Override
public Aggregator newServerAggregator(Configuration conf) {
    FirstLastValueServerAggregator aggregator = new FirstLastValueServerAggregator();
    //invert order for LAST_BY function cause it is inverted version of FIRST_BY
    boolean order = !(Boolean) ((LiteralExpression) children.get(1)).getValue();
    aggregator.init(children, order, 0);
    return aggregator;
}