ygerzhedovich commented on code in PR #944: URL: https://github.com/apache/ignite-3/pull/944#discussion_r923127548
########## modules/api/src/main/java/org/apache/ignite/schema/definition/DefaultValueDefinition.java: ########## @@ -0,0 +1,110 @@ +/* + * 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.ignite.schema.definition; + +import java.util.Objects; + +/** + * Definition of value provider to use as default. + */ +@SuppressWarnings("PublicInnerClass") +public class DefaultValueDefinition { + /** + * Defines value provider as functional provider. + * + * @param name Name of the function to invoke to generate the value + * @return Default value definition. + * @see DefaultValueGenerators + */ + public static DefaultValueDefinition functionCall(String name) { + return new FunctionCall(Objects.requireNonNull(name, "name")); + } + + /** + * Defines value provider as non-null constant value provider. + * + * @param value A value to use as default. + * @return Default value definition. + * @throws NullPointerException If value argument is null. + */ + public static DefaultValueDefinition constant(Object value) { + return new ConstantValue(Objects.requireNonNull(value, "value")); + } + + /** + * Defines value provider as constant null provider. + * + * @return Default value definition. + */ + public static DefaultValueDefinition nullValue() { + return new DefaultValueDefinition(DefaultValueType.NULL); + } + + /** Types of the defaults. */ + public enum DefaultValueType { + /** Default is not specified or explicitly specified as null. */ + NULL, + + /** Default is specified as non-null constant. */ + CONSTANT, + + /** Default is specified as a call to a function. */ + FUNCTION_CALL + } + + protected final DefaultValueType type; + + private DefaultValueDefinition(DefaultValueType type) { + this.type = type; + } + + /** Returns type of the default value. */ + public DefaultValueType type() { + return type; + } + + /** Defines default value provider as a function call. */ + public static class FunctionCall extends DefaultValueDefinition { + private final String functionName; + + private FunctionCall(String functionName) { + super(DefaultValueType.FUNCTION_CALL); + this.functionName = functionName; + } + + /** Returns name of the function to use as value generator. */ + public String functionName() { + return functionName; + } + } + + /** Defines default value provider as a function call. */ Review Comment: ```suggestion /** Defines default value provider as a constant. */ ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
