the-other-tim-brown commented on code in PR #14265: URL: https://github.com/apache/hudi/pull/14265#discussion_r2539598796
########## hudi-common/src/main/java/org/apache/hudi/common/schema/HoodieSchema.java: ########## @@ -0,0 +1,931 @@ +/* + * 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.hudi.common.schema; + +import org.apache.hudi.avro.HoodieAvroUtils; +import org.apache.hudi.common.util.Option; +import org.apache.hudi.common.util.ValidationUtils; +import org.apache.hudi.exception.HoodieAvroSchemaException; + +import org.apache.avro.JsonProperties; +import org.apache.avro.Schema; + +import java.io.Serializable; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.List; +import java.util.Map; +import java.util.Objects; +import java.util.stream.Collectors; + +/** + * Wrapper class for Avro Schema that provides Hudi-specific schema functionality + * while maintaining binary compatibility with Avro. + * + * <p>This class serves as the primary interface for schema operations within Hudi. + * It encapsulates an Avro Schema and provides a consistent, type-safe API while + * maintaining full compatibility with existing Avro-based code.</p> + * + * <p>Key features: + * <ul> + * <li>Binary compatibility with Avro Schema</li> + * <li>Type-safe field access through HoodieSchemaField</li> + * <li>Support for all Avro schema types and operations</li> + * <li>Consistent error handling using Hudi exceptions</li> + * <li>Integration with Hudi's Option type for null safety</li> + * </ul></p> + * + * <p>Usage examples: + * <pre>{@code + * // Create from JSON + * HoodieSchema schema = HoodieSchema.parse(jsonSchemaString); + * + * // Create primitive schemas + * HoodieSchema stringSchema = HoodieSchema.create(HoodieSchemaType.STRING); + * + * // Access schema properties + * HoodieSchemaType type = schema.getType(); + * List<HoodieSchemaField> fields = schema.getFields(); + * Option<HoodieSchemaField> field = schema.getField("fieldName"); + * + * // Convert back to Avro for compatibility + * Schema avroSchema = schema.getAvroSchema(); + * }</pre></p> + * + * @since 1.2.0 + */ +public class HoodieSchema implements Serializable { Review Comment: The HoodieSchema is our schema abstraction. It will not be tied to avro in the future. It also will not be extended since we want a single definition of a schema that can be translated to other formats. -- 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]
