/*
 * 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 io.prestosql.spi.function;

import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.PARAMETER;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

@Retention(RUNTIME)
@Target({METHOD, PARAMETER})
public @interface SqlNullable
{
    String value() default "";
}

@@ -841,16 +841,629 @@
 NTIME;%0A%0A
+/**%0A * Indicates a parameter or return value can be NULL.%0A * %3Cp%3E%0A * %7B@code @SqlNullable%7D annotation, when placed on a parameter of a %7B@link ScalarFunction%7D or %7B@link ScalarOperator%7D method,%0A * indicates that the method should be called also when the parameter is NULL. In the absence of %7B@code @SqlNullable%7D%0A * annotation, the engine assumes the implemented SQL function or operator is supposed to return NULL when given parameter is NULL%0A * and does not call the implementing method.%0A * %3Cp%3E%0A * %7B@code @SqlNullable%7D placed on a %7B@link ScalarFunction%7D method indicates that the implementation may return NULL.%0A */%0A
 @Retenti

Document @SqlNullable