org.apache.flink.table.api.JsonValueOnEmptyOrError Maven / Gradle / Ivy

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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.flink.table.api;

import org.apache.flink.annotation.PublicEvolving;
import org.apache.flink.table.expressions.TableSymbol;
import org.apache.flink.table.functions.BuiltInFunctionDefinitions;

/** Behavior for {@link BuiltInFunctionDefinitions#JSON_VALUE}. */
@PublicEvolving
public enum JsonValueOnEmptyOrError implements TableSymbol {
    /** Return {@code NULL}. */
    NULL,
    /** Propagate or throw an error. */
    ERROR,
    /** Use a given default expression. */
    DEFAULT
}