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A cluster computing system for processing large-scale spatial data: Snowflake API.

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/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.sedona.snowflake.snowsql.annotations;

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

public class UDTFAnnotations {
  @Retention(RetentionPolicy.RUNTIME)
  @Target(ElementType.METHOD)
  public static @interface CallOnNull {}

  @Retention(RetentionPolicy.RUNTIME)
  @Target(ElementType.METHOD)
  public static @interface Immutable {}

  @Retention(RetentionPolicy.RUNTIME)
  @Target(ElementType.METHOD)
  public static @interface Volatile {}

  @Retention(RetentionPolicy.RUNTIME)
  @Target(ElementType.TYPE)
  public static @interface TabularFunc {
    String name();

    String[] argNames();
    // Arg types are optional. If not specified, Reflection is used to get the type name
    // This is required for Snowflake Geometry type which is serialized as a Java String type when
    // UDF
    // is called from Snowflake.
    // If specified, the length of argTypes must match the length of argNames
    // If specified, the type name must be one of the keys in Constants.snowflakeTypeMap
    String[] argTypes() default {};
    // Return types are optional. If not specified, Reflection is used to get the type name
    // This is required for Snowflake Geometry type which is serialized as a Java String type when
    // UDF
    String returnTypes() default "";
  }
}