rdblue commented on code in PR #17343: URL: https://github.com/apache/iceberg/pull/17343#discussion_r3832433541
########## api/src/main/java/org/apache/iceberg/expressions/UnboundApply.java: ########## @@ -0,0 +1,150 @@ +/* + * 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.expressions; + +import java.util.List; +import java.util.Locale; +import java.util.Set; +import org.apache.iceberg.relocated.com.google.common.base.Preconditions; +import org.apache.iceberg.relocated.com.google.common.collect.ImmutableSet; +import org.apache.iceberg.relocated.com.google.common.collect.Lists; +import org.apache.iceberg.transforms.Transforms; +import org.apache.iceberg.transforms.UnknownTransform; +import org.apache.iceberg.types.Types; + +/** + * Represents a function application expression. This is the general form for invoking functions on + * value expressions. Known Iceberg partition transforms can be converted to {@link + * UnboundTransform} via {@link #asTransform()}. + * + * @param <T> the Java type of values produced by this expression + */ +public class UnboundApply<T> implements UnboundTerm<T> { + // bucket and truncate take the transform parameter as their first argument, so they cannot be + // resolved from a name alone + private static final Set<String> PARAMETERIZED_TRANSFORMS = ImmutableSet.of("bucket", "truncate"); + + // the expressions spec defines partition transforms as functions, other than void + private static final String VOID = "void"; + + private static final String ICEBERG_FUNCTIONS_CATALOG = "iceberg_functions"; + + private final FunctionReference function; + private final List<Object> arguments; Review Comment: I doubt that `Object` is correct here. These must be either Expression (a predicate) or Term (a value expression). -- 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]
