/*
* 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.operator;
import com.facebook.presto.spi.Page;
import com.facebook.presto.spi.type.Type;
import java.util.List;
import static java.util.Objects.requireNonNull;
public class FinishedOperator
implements Operator
{
private final OperatorContext operatorContext;
private final List<Type> types;
public FinishedOperator(OperatorContext operatorContext, List<Type> types)
{
this.operatorContext = requireNonNull(operatorContext, "operatorContext is null");
this.types = requireNonNull(types, "types is null");
}
@Override
public OperatorContext getOperatorContext()
{
return operatorContext;
}
@Override
public List<Type> getTypes()
{
return types;
}
@Override
public void finish()
{
}
@Override
public boolean isFinished()
{
return true;
}
@Override
public boolean needsInput()
{
return false;
}
@Override
public void addInput(Page page)
{
throw new UnsupportedOperationException();
}
@Override
public Page getOutput()
{
return null;
}
}