| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.drill.exec.physical.config; |
| |
| import com.fasterxml.jackson.annotation.JsonIgnore; |
| import com.fasterxml.jackson.annotation.JsonProperty; |
| import com.fasterxml.jackson.annotation.JsonTypeName; |
| import org.apache.calcite.rex.RexWindowBound; |
| import org.apache.drill.common.logical.data.NamedExpression; |
| import org.apache.drill.common.logical.data.Order; |
| import org.apache.drill.exec.physical.base.AbstractSingle; |
| import org.apache.drill.exec.physical.base.PhysicalOperator; |
| import org.apache.drill.exec.physical.base.PhysicalVisitor; |
| import org.apache.drill.exec.proto.UserBitShared; |
| |
| import java.util.List; |
| |
| @JsonTypeName("window") |
| public class WindowPOP extends AbstractSingle { |
| |
| private final List<NamedExpression> withins; |
| private final List<NamedExpression> aggregations; |
| private final List<Order.Ordering> orderings; |
| private final boolean frameUnitsRows; |
| private final Bound start; |
| private final Bound end; |
| |
| public WindowPOP(@JsonProperty("child") PhysicalOperator child, |
| @JsonProperty("within") List<NamedExpression> withins, |
| @JsonProperty("aggregations") List<NamedExpression> aggregations, |
| @JsonProperty("orderings") List<Order.Ordering> orderings, |
| @JsonProperty("frameUnitsRows") boolean frameUnitsRows, |
| @JsonProperty("start") Bound start, |
| @JsonProperty("end") Bound end) { |
| super(child); |
| this.withins = withins; |
| this.aggregations = aggregations; |
| this.orderings = orderings; |
| this.frameUnitsRows = frameUnitsRows; |
| this.start = start; |
| this.end = end; |
| } |
| |
| @Override |
| protected PhysicalOperator getNewWithChild(PhysicalOperator child) { |
| return new WindowPOP(child, withins, aggregations, orderings, frameUnitsRows, start, end); |
| } |
| |
| @Override |
| public <T, X, E extends Throwable> T accept(PhysicalVisitor<T, X, E> physicalVisitor, X value) throws E { |
| return physicalVisitor.visitWindowFrame(this, value); |
| } |
| |
| @Override |
| public int getOperatorType() { |
| return UserBitShared.CoreOperatorType.WINDOW_VALUE; |
| } |
| |
| public Bound getStart() { |
| return start; |
| } |
| |
| public Bound getEnd() { |
| return end; |
| } |
| |
| public List<NamedExpression> getAggregations() { |
| return aggregations; |
| } |
| |
| public List<NamedExpression> getWithins() { |
| return withins; |
| } |
| |
| public List<Order.Ordering> getOrderings() { |
| return orderings; |
| } |
| |
| public boolean isFrameUnitsRows() { |
| return frameUnitsRows; |
| } |
| |
| @Override |
| public String toString() { |
| return "WindowPOP[withins=" + withins |
| + ", aggregations=" + aggregations |
| + ", orderings=" + orderings |
| + ", frameUnitsRows=" + frameUnitsRows |
| + ", start=" + start |
| + ", end=" + end |
| + "]"; |
| } |
| |
| @JsonTypeName("windowBound") |
| public static class Bound { |
| private final boolean unbounded; |
| private final long offset; |
| |
| public Bound(@JsonProperty("unbounded") boolean unbounded, @JsonProperty("offset") long offset) { |
| this.unbounded = unbounded; |
| this.offset = offset; |
| } |
| |
| public boolean isUnbounded() { |
| return unbounded; |
| } |
| |
| @JsonIgnore |
| public boolean isCurrent() { |
| return offset == 0; |
| } |
| |
| public long getOffset() { |
| return offset; |
| } |
| |
| @Override |
| public String toString() { |
| return "Bound[unbounded=" + unbounded + ", offset=" + offset + "]"; |
| } |
| } |
| |
| public static Bound newBound(RexWindowBound windowBound) { |
| return new Bound(windowBound.isUnbounded(), windowBound.isCurrentRow() ? 0 : Long.MIN_VALUE); //TODO: Get offset to work |
| } |
| } |