com.facebook.presto.jdbc.internal.spi.type.QuantileDigestParametricType Maven / Gradle / Ivy
/*
* 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.jdbc.internal.spi.type;
import java.util.List;
import static java.lang.String.format;
public class QuantileDigestParametricType
implements ParametricType
{
public static final QuantileDigestParametricType QDIGEST = new QuantileDigestParametricType();
@Override
public String getName()
{
return StandardTypes.QDIGEST;
}
@Override
public Type createType(TypeManager typeManager, List parameters)
{
checkArgument(parameters.size() == 1, "QDIGEST type expects exactly one type as a parameter, got %s", parameters);
checkArgument(
parameters.get(0).getKind() == ParameterKind.TYPE,
"QDIGEST expects type as a parameter, got %s",
parameters);
// Validation check on the acceptable type (bigint, real, double) intentionally omitted
// because this is validated in each function and to allow for consistent error messaging
return new QuantileDigestType(parameters.get(0).getType());
}
private static void checkArgument(boolean argument, String format, Object... args)
{
if (!argument) {
throw new IllegalArgumentException(format(format, args));
}
}
}