/*
* Licensed 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 com.facebook.presto.sql.planner.plan;
import com.facebook.presto.sql.planner.Symbol;
import com.facebook.presto.sql.tree.Expression;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.google.common.collect.ImmutableList;
import javax.annotation.concurrent.Immutable;
import java.util.List;
import static com.google.common.base.Preconditions.checkArgument;
@Immutable
public class ValuesNode
extends PlanNode
{
private final List<Symbol> outputSymbols;
private final List<List<Expression>> rows;
@JsonCreator
public ValuesNode(@JsonProperty("id") PlanNodeId id,
@JsonProperty("outputSymbols") List<Symbol> outputSymbols,
@JsonProperty("rows") List<List<Expression>> rows)
{
super(id);
this.outputSymbols = ImmutableList.copyOf(outputSymbols);
this.rows = ImmutableList.copyOf(rows);
for (List<Expression> row : rows) {
checkArgument(row.size() == outputSymbols.size() || row.size() == 0,
"Expected row to have %s values, but row has %s values", outputSymbols.size(), row.size());
}
}
@Override
@JsonProperty
public List<Symbol> getOutputSymbols()
{
return outputSymbols;
}
@JsonProperty
public List<List<Expression>> getRows()
{
return rows;
}
@Override
public List<PlanNode> getSources()
{
return ImmutableList.of();
}
@Override
public <C, R> R accept(PlanVisitor<C, R> visitor, C context)
{
return visitor.visitValues(this, context);
}
@Override
public PlanNode replaceChildren(List<PlanNode> newChildren)
{
checkArgument(newChildren.isEmpty(), "newChildren is not empty");
return this;
}
}