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/**
* 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
* <p/>
* http://www.apache.org/licenses/LICENSE-2.0
* <p/>
* 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 java.util.List;
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;
@JsonTypeName("unpivot-maps")
public class UnpivotMaps extends AbstractSingle {
private final List<String> mapFieldsNames;
@JsonCreator
public UnpivotMaps(@JsonProperty("child") PhysicalOperator child, List<String> mapFieldsNames) {
super(child);
this.mapFieldsNames = mapFieldsNames;
}
public List<String> getMapFieldNames() {
return mapFieldsNames;
}
@Override
public <T, X, E extends Throwable> T accept(PhysicalVisitor<T, X, E> physicalVisitor, X value) throws E {
return physicalVisitor.visitUnpivot(this, value);
}
@Override
protected PhysicalOperator getNewWithChild(PhysicalOperator child) {
return new UnpivotMaps(child, mapFieldsNames);
}
@Override
public int getOperatorType() {
return CoreOperatorType.UNPIVOT_MAPS_VALUE;
}
}
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