/*
* 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.scalar;
import com.facebook.presto.spi.function.LiteralParameters;
import com.facebook.presto.spi.function.ScalarFunction;
import com.facebook.presto.spi.function.SqlNullable;
import com.facebook.presto.spi.function.SqlType;
import com.facebook.presto.spi.type.StandardTypes;
import io.airlift.slice.Slice;
public final class CustomFunctions
{
private CustomFunctions() {}
@ScalarFunction
@SqlType(StandardTypes.BIGINT)
public static long customAdd(@SqlType(StandardTypes.BIGINT) long x, @SqlType(StandardTypes.BIGINT) long y)
{
return x + y;
}
@ScalarFunction("custom_is_null")
@LiteralParameters("x")
@SqlType(StandardTypes.BOOLEAN)
public static boolean customIsNullVarchar(@SqlNullable @SqlType("varchar(x)") Slice slice)
{
return slice == null;
}
@ScalarFunction("custom_is_null")
@SqlType(StandardTypes.BOOLEAN)
public static boolean customIsNullBigint(@SqlNullable @SqlType(StandardTypes.BIGINT) Long value)
{
return value == null;
}
}