wgtmac commented on code in PR #12667: URL: https://github.com/apache/iceberg/pull/12667#discussion_r2478016227
########## api/src/main/java/org/apache/iceberg/geospatial/BoundingBox.java: ########## @@ -0,0 +1,154 @@ +/* + * 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.iceberg.geospatial; + +import java.nio.ByteBuffer; +import java.nio.ByteOrder; +import java.util.Objects; + +/** + * Represents a geospatial bounding box composed of minimum and maximum bounds. + * + * <p>A bounding box (also called a Minimum Bounding Rectangle or MBR) is defined by two points: the + * minimum and maximum coordinates that define the box's corners. This provides a simple + * approximation of a more complex geometry for efficient filtering and data skipping. + */ +public class BoundingBox { + /** + * Create a {@link BoundingBox} object from buffers containing min and max bounds + * + * @param min the serialized minimum bound + * @param max the serialized maximum bound + * @return a BoundingBox instance + */ + public static BoundingBox fromByteBuffers(ByteBuffer min, ByteBuffer max) { Review Comment: > The underlying java type of [geometry and geography types](https://github.com/apache/iceberg/blob/92ae3d9da2afba3fa6fa0f74af6d78d773a6ab26/api/src/main/java/org/apache/iceberg/types/Type.java#L47-L48) are all ByteBuffer. A spatial predicate involving geospatial term should be represented by UnboundPredicate<ByteBuffer> and BoundLiteralPredicate<ByteBuffer> in the current design. This implies that the literal type should be Literal<ByteBuffer> as well. Yes, this approach requires less change. It just introduces a slight inconsistency that `Literal<ByteBuffer>` is not a single geometry or geography value but a composite value (bbox) and we cannot directly compare values stored in the column with the literal value. I'm fine with this approach if we can prohibit users from creating illegal expression on geospatial types. -- 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] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
