parthchandra commented on code in PR #13786: URL: https://github.com/apache/iceberg/pull/13786#discussion_r2283560481
########## parquet/src/main/java/org/apache/iceberg/parquet/CometTypeUtils.java: ########## @@ -0,0 +1,255 @@ +/* + * 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.util.Map; +import org.apache.comet.parquet.ParquetColumnSpec; +import org.apache.iceberg.relocated.com.google.common.collect.Maps; +import org.apache.parquet.column.ColumnDescriptor; +import org.apache.parquet.schema.LogicalTypeAnnotation; +import org.apache.parquet.schema.PrimitiveType; +import org.apache.parquet.schema.Type; +import org.apache.parquet.schema.Types; + +public class CometTypeUtils { + + private CometTypeUtils() {} + + public static ParquetColumnSpec descriptorToParquetColumnSpec(ColumnDescriptor descriptor) { + + String[] path = descriptor.getPath(); + PrimitiveType primitiveType = descriptor.getPrimitiveType(); + String physicalType = primitiveType.getPrimitiveTypeName().name(); + + int typeLength = + primitiveType.getPrimitiveTypeName() == PrimitiveType.PrimitiveTypeName.FIXED_LEN_BYTE_ARRAY + ? primitiveType.getTypeLength() + : 0; + + boolean isRepeated = primitiveType.getRepetition() == Type.Repetition.REPEATED; + + // ToDo: extract this into a Util method + String logicalTypeName = null; + Map<String, String> logicalTypeParams = Maps.newHashMap(); + LogicalTypeAnnotation logicalType = primitiveType.getLogicalTypeAnnotation(); + + if (logicalType != null) { + logicalTypeName = logicalType.getClass().getSimpleName(); + + // Handle specific logical types + if (logicalType instanceof LogicalTypeAnnotation.DecimalLogicalTypeAnnotation) { + LogicalTypeAnnotation.DecimalLogicalTypeAnnotation decimal = + (LogicalTypeAnnotation.DecimalLogicalTypeAnnotation) logicalType; + logicalTypeParams.put("precision", String.valueOf(decimal.getPrecision())); + logicalTypeParams.put("scale", String.valueOf(decimal.getScale())); + } else if (logicalType instanceof LogicalTypeAnnotation.TimestampLogicalTypeAnnotation) { + LogicalTypeAnnotation.TimestampLogicalTypeAnnotation timestamp = + (LogicalTypeAnnotation.TimestampLogicalTypeAnnotation) logicalType; + logicalTypeParams.put("isAdjustedToUTC", String.valueOf(timestamp.isAdjustedToUTC())); + logicalTypeParams.put("unit", timestamp.getUnit().name()); + } else if (logicalType instanceof LogicalTypeAnnotation.TimeLogicalTypeAnnotation) { + LogicalTypeAnnotation.TimeLogicalTypeAnnotation time = + (LogicalTypeAnnotation.TimeLogicalTypeAnnotation) logicalType; + logicalTypeParams.put("isAdjustedToUTC", String.valueOf(time.isAdjustedToUTC())); + logicalTypeParams.put("unit", time.getUnit().name()); + } else if (logicalType instanceof LogicalTypeAnnotation.IntLogicalTypeAnnotation) { + LogicalTypeAnnotation.IntLogicalTypeAnnotation intType = + (LogicalTypeAnnotation.IntLogicalTypeAnnotation) logicalType; + logicalTypeParams.put("isSigned", String.valueOf(intType.isSigned())); + logicalTypeParams.put("bitWidth", String.valueOf(intType.getBitWidth())); + } + } + + return new ParquetColumnSpec( + 1, // ToDo: pass in the correct id Review Comment: Done. Thanks for pointing this out! ########## parquet/src/main/java/org/apache/iceberg/parquet/CometTypeUtils.java: ########## @@ -0,0 +1,255 @@ +/* + * 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.util.Map; +import org.apache.comet.parquet.ParquetColumnSpec; +import org.apache.iceberg.relocated.com.google.common.collect.Maps; +import org.apache.parquet.column.ColumnDescriptor; +import org.apache.parquet.schema.LogicalTypeAnnotation; +import org.apache.parquet.schema.PrimitiveType; +import org.apache.parquet.schema.Type; +import org.apache.parquet.schema.Types; + +public class CometTypeUtils { + + private CometTypeUtils() {} + + public static ParquetColumnSpec descriptorToParquetColumnSpec(ColumnDescriptor descriptor) { + + String[] path = descriptor.getPath(); + PrimitiveType primitiveType = descriptor.getPrimitiveType(); + String physicalType = primitiveType.getPrimitiveTypeName().name(); + + int typeLength = + primitiveType.getPrimitiveTypeName() == PrimitiveType.PrimitiveTypeName.FIXED_LEN_BYTE_ARRAY + ? primitiveType.getTypeLength() + : 0; + + boolean isRepeated = primitiveType.getRepetition() == Type.Repetition.REPEATED; + + // ToDo: extract this into a Util method Review Comment: removed -- This is an automated message from the Apache Git Service. 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