agavra commented on code in PR #9643: URL: https://github.com/apache/pinot/pull/9643#discussion_r1006054905
########## pinot-query-planner/src/main/java/org/apache/calcite/sql/fun/PinotOperatorTable.java: ########## @@ -0,0 +1,98 @@ +/** + * 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.calcite.sql.fun; + +import java.lang.reflect.Field; +import java.util.ArrayList; +import java.util.List; +import org.apache.calcite.sql.SqlFunction; +import org.apache.calcite.sql.SqlOperator; +import org.apache.calcite.sql.validate.SqlNameMatchers; +import org.apache.calcite.util.Util; +import org.checkerframework.checker.nullness.qual.MonotonicNonNull; + + +/** + * {@link PinotOperatorTable} defines the {@link SqlOperator} overrides on top of the {@link SqlStdOperatorTable}. + * + * <p>The main purpose of this Pinot specific SQL operator table is to + * <ul> + * <li>Ensure that any specific SQL validation rules can apply with Pinot override entirely over Calcite's.</li> + * <li>Ability to create customer operators that are not function and cannot use + * {@link org.apache.calcite.prepare.Prepare.CatalogReader} to override</li> + * <li>Still maintain minimum customization and benefit from Calcite's original operator table setting.</li> + * </ul> + */ +public class PinotOperatorTable extends SqlStdOperatorTable { Review Comment: an alternative, by the way, would be to just register them in a new operator table (like `ListSqlOperatorTable`) here: https://github.com/apache/pinot/blob/46aa54139fcbdab36851dcc2c4349d8ccfe3da79/pinot-query-planner/src/main/java/org/apache/pinot/query/QueryEnvironment.java#L94 not sure what the tradeoffs would be -- 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]
