| /* |
| * 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 org.apache.drill.common.logical.data.NamedExpression; |
| 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.CoreOperatorType; |
| |
| import com.fasterxml.jackson.annotation.JsonCreator; |
| import com.fasterxml.jackson.annotation.JsonProperty; |
| import com.fasterxml.jackson.annotation.JsonTypeName; |
| |
| import java.util.List; |
| |
| @JsonTypeName("streaming-aggregate") |
| public class StreamingAggregate extends AbstractSingle { |
| |
| private final List<NamedExpression> keys; |
| private final List<NamedExpression> exprs; |
| |
| @JsonCreator |
| public StreamingAggregate(@JsonProperty("child") PhysicalOperator child, |
| @JsonProperty("keys") List<NamedExpression> keys, |
| @JsonProperty("exprs") List<NamedExpression> exprs) { |
| super(child); |
| this.keys = keys; |
| this.exprs = exprs; |
| } |
| |
| public List<NamedExpression> getKeys() { |
| return keys; |
| } |
| |
| public List<NamedExpression> getExprs() { |
| return exprs; |
| } |
| |
| @Override |
| public <T, X, E extends Throwable> T accept(PhysicalVisitor<T, X, E> physicalVisitor, X value) throws E{ |
| return physicalVisitor.visitStreamingAggregate(this, value); |
| } |
| |
| @Override |
| protected PhysicalOperator getNewWithChild(PhysicalOperator child) { |
| return new StreamingAggregate(child, keys, exprs); |
| } |
| |
| @Override |
| public int getOperatorType() { |
| return CoreOperatorType.STREAMING_AGGREGATE_VALUE; |
| } |
| } |