rdblue commented on code in PR #12496: URL: https://github.com/apache/iceberg/pull/12496#discussion_r2004402908
########## parquet/src/main/java/org/apache/iceberg/parquet/ParquetVariantUtil.java: ########## @@ -0,0 +1,476 @@ +/* + * 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.parquet; + +import java.math.BigDecimal; +import java.math.BigInteger; +import java.nio.ByteBuffer; +import java.nio.ByteOrder; +import java.util.Comparator; +import java.util.Deque; +import java.util.List; +import java.util.Optional; +import org.apache.iceberg.relocated.com.google.common.base.Preconditions; +import org.apache.iceberg.relocated.com.google.common.collect.Lists; +import org.apache.iceberg.types.Comparators; +import org.apache.iceberg.util.BinaryUtil; +import org.apache.iceberg.util.UnicodeUtil; +import org.apache.iceberg.variants.PhysicalType; +import org.apache.iceberg.variants.VariantArray; +import org.apache.iceberg.variants.VariantMetadata; +import org.apache.iceberg.variants.VariantObject; +import org.apache.iceberg.variants.VariantPrimitive; +import org.apache.iceberg.variants.VariantValue; +import org.apache.iceberg.variants.VariantVisitor; +import org.apache.iceberg.variants.Variants; +import org.apache.parquet.io.api.Binary; +import org.apache.parquet.schema.GroupType; +import org.apache.parquet.schema.LogicalTypeAnnotation; +import org.apache.parquet.schema.LogicalTypeAnnotation.DateLogicalTypeAnnotation; +import org.apache.parquet.schema.LogicalTypeAnnotation.DecimalLogicalTypeAnnotation; +import org.apache.parquet.schema.LogicalTypeAnnotation.IntLogicalTypeAnnotation; +import org.apache.parquet.schema.LogicalTypeAnnotation.LogicalTypeAnnotationVisitor; +import org.apache.parquet.schema.LogicalTypeAnnotation.StringLogicalTypeAnnotation; +import org.apache.parquet.schema.LogicalTypeAnnotation.TimeLogicalTypeAnnotation; +import org.apache.parquet.schema.LogicalTypeAnnotation.TimestampLogicalTypeAnnotation; +import org.apache.parquet.schema.LogicalTypeAnnotation.UUIDLogicalTypeAnnotation; +import org.apache.parquet.schema.PrimitiveType; +import org.apache.parquet.schema.Type; +import org.apache.parquet.schema.Types; + +class ParquetVariantUtil { + private ParquetVariantUtil() {} + + /** + * Convert a Parquet {@link PrimitiveType} to the equivalent Variant {@link PhysicalType}. + * + * @param primitive a Parquet {@link PrimitiveType} + * @return a Variant {@link PhysicalType} + * @throws UnsupportedOperationException if the Parquet type is not equivalent to a variant type + */ + static PhysicalType convert(PrimitiveType primitive) { + LogicalTypeAnnotation annotation = primitive.getLogicalTypeAnnotation(); + if (annotation != null) { + return annotation.accept(PhysicalTypeConverter.INSTANCE).orElse(null); + } + + switch (primitive.getPrimitiveTypeName()) { + case BOOLEAN: + return PhysicalType.BOOLEAN_TRUE; Review Comment: For types, we use the two interchangeably because they are basically the same. We also allow creating objects with either `BOOLEAN_TRUE` or `BOOLEAN_FALSE` so that we can convert types like this without worrying about modifying the value ([see here](https://github.com/apache/iceberg/blob/main/core/src/main/java/org/apache/iceberg/variants/PrimitiveWrapper.java#L57)). -- 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: issues-unsubscr...@iceberg.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: issues-unsubscr...@iceberg.apache.org For additional commands, e-mail: issues-h...@iceberg.apache.org
