/*
* 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.ml.type;
import com.facebook.presto.spi.type.ParameterKind;
import com.facebook.presto.spi.type.ParametricType;
import com.facebook.presto.spi.type.Type;
import com.facebook.presto.spi.type.TypeManager;
import com.facebook.presto.spi.type.TypeParameter;
import java.util.List;
import static com.google.common.base.Preconditions.checkArgument;
public class ClassifierParametricType
implements ParametricType
{
public static final String NAME = "Classifier";
@Override
public String getName()
{
return NAME;
}
@Override
public Type createType(TypeManager typeManager, List<TypeParameter> parameters)
{
checkArgument(parameters.size() == 1, "Expected only one type, got %s", parameters);
checkArgument(
parameters.get(0).getKind() == ParameterKind.TYPE,
"Expected type as a parameter, got %s",
parameters);
return new ClassifierType(parameters.get(0).getType());
}
}