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13 changes: 8 additions & 5 deletions parquet/src/main/java/org/apache/iceberg/parquet/RemoveIds.java
Original file line number Diff line number Diff line change
Expand Up @@ -48,16 +48,19 @@ public Type struct(GroupType struct, List<Type> fields) {

@Override
public Type list(GroupType array, Type item) {
return Types.list(array.getRepetition())
.element(item)
GroupType repeatedElement = array.getType(0).asGroupType();
return Types.buildGroup(array.getRepetition())
.as(array.getLogicalTypeAnnotation())
.addField(repeatedElement.withNewFields(item))
.named(array.getName());
}

@Override
public Type map(GroupType map, Type key, Type value) {
return Types.map(map.getRepetition())
.key(key)
.value(value)
GroupType repeatedKeyValue = map.getType(0).asGroupType();
return Types.buildGroup(map.getRepetition())
.as(map.getLogicalTypeAnnotation())
.addField(repeatedKeyValue.withNewFields(key, value))
.named(map.getName());
}

Expand Down
Original file line number Diff line number Diff line change
@@ -0,0 +1,177 @@
/*
* 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 org.apache.iceberg.Schema;
import org.apache.iceberg.types.Types.DoubleType;
import org.apache.iceberg.types.Types.ListType;
import org.apache.iceberg.types.Types.MapType;
import org.apache.iceberg.types.Types.NestedField;
import org.apache.iceberg.types.Types.StringType;
import org.apache.iceberg.types.Types.StructType;
import org.apache.parquet.schema.LogicalTypeAnnotation;
import org.apache.parquet.schema.MessageType;
import org.apache.parquet.schema.PrimitiveType.PrimitiveTypeName;
import org.apache.parquet.schema.Type;
import org.apache.parquet.schema.Types;
import org.junit.Assert;
import org.junit.Test;

public class TestParquetTypeVisitor {
MessageType mapSchema = Types.buildMessage()
.addField(Types.buildGroup(Type.Repetition.OPTIONAL)
.addField(Types.buildGroup(Type.Repetition.REPEATED)
.addField(Types.primitive(PrimitiveTypeName.BINARY, Type.Repetition.REQUIRED)
.as(LogicalTypeAnnotation.stringType())
.id(2)
.named("key"))
.addField(Types.buildGroup(Type.Repetition.OPTIONAL)
.addField(Types.primitive(PrimitiveTypeName.DOUBLE, Type.Repetition.REQUIRED).id(4).named("x"))
.addField(Types.primitive(PrimitiveTypeName.DOUBLE, Type.Repetition.REQUIRED).id(5).named("y"))
.addField(Types.primitive(PrimitiveTypeName.DOUBLE, Type.Repetition.REQUIRED).id(6).named("z"))
.id(3)
.named("value"))
.named("custom_key_value_name"))
.as(LogicalTypeAnnotation.mapType())
.id(1)
.named("m"))
.named("table");

MessageType mapSchemaWithoutIds = Types.buildMessage()
.addField(Types.buildGroup(Type.Repetition.OPTIONAL)
.addField(Types.buildGroup(Type.Repetition.REPEATED)
.addField(Types.primitive(PrimitiveTypeName.BINARY, Type.Repetition.REQUIRED)
.as(LogicalTypeAnnotation.stringType())
.named("key"))
.addField(Types.buildGroup(Type.Repetition.OPTIONAL)
.addField(Types.primitive(PrimitiveTypeName.DOUBLE, Type.Repetition.REQUIRED).named("x"))
.addField(Types.primitive(PrimitiveTypeName.DOUBLE, Type.Repetition.REQUIRED).named("y"))
.addField(Types.primitive(PrimitiveTypeName.DOUBLE, Type.Repetition.REQUIRED).named("z"))
.named("value"))
.named("custom_key_value_name"))
.as(LogicalTypeAnnotation.mapType())
.named("m"))
.named("table");

MessageType listSchema = Types.buildMessage()
.addField(Types.buildGroup(Type.Repetition.OPTIONAL)
.addField(Types.buildGroup(Type.Repetition.REPEATED)
.addField(Types.buildGroup(Type.Repetition.OPTIONAL)
.addField(Types.primitive(PrimitiveTypeName.DOUBLE, Type.Repetition.REQUIRED).id(4).named("x"))
.addField(Types.primitive(PrimitiveTypeName.DOUBLE, Type.Repetition.REQUIRED).id(5).named("y"))
.addField(Types.primitive(PrimitiveTypeName.DOUBLE, Type.Repetition.REQUIRED).id(6).named("z"))
.id(3)
.named("custom_element_name"))
.named("custom_repeated_name"))
.as(LogicalTypeAnnotation.listType())
.id(1)
.named("m"))
.named("table");

MessageType listSchemaWithoutIds = Types.buildMessage()
.addField(Types.buildGroup(Type.Repetition.OPTIONAL)
.addField(Types.buildGroup(Type.Repetition.REPEATED)
.addField(Types.buildGroup(Type.Repetition.OPTIONAL)
.addField(Types.primitive(PrimitiveTypeName.DOUBLE, Type.Repetition.REQUIRED).named("x"))
.addField(Types.primitive(PrimitiveTypeName.DOUBLE, Type.Repetition.REQUIRED).named("y"))
.addField(Types.primitive(PrimitiveTypeName.DOUBLE, Type.Repetition.REQUIRED).named("z"))
.named("custom_element_name"))
.named("custom_repeated_name"))
.as(LogicalTypeAnnotation.listType())
.named("m"))
.named("table");

@Test
public void testRemoveIdsMap() {
MessageType actual = RemoveIds.removeIds(mapSchema);
Assert.assertEquals("RemoveIds should not rename repeated struct", mapSchemaWithoutIds, actual);
}

@Test
public void testRemoveIdsList() {
MessageType actual = RemoveIds.removeIds(listSchema);
Assert.assertEquals("RemoveIds should not rename repeated struct", listSchemaWithoutIds, actual);
}

@Test
public void testPruneColumnsMap() {
// project map.value.x and map.value.y
Schema projection = new Schema(
NestedField.optional(1, "m", MapType.ofOptional(2, 3,
StringType.get(),
StructType.of(
NestedField.required(4, "x", DoubleType.get()),
NestedField.required(5, "y", DoubleType.get())
)
))
);

MessageType expected = Types.buildMessage()
.addField(Types.buildGroup(Type.Repetition.OPTIONAL)
.addField(Types.buildGroup(Type.Repetition.REPEATED)
.addField(Types.primitive(PrimitiveTypeName.BINARY, Type.Repetition.REQUIRED)
.as(LogicalTypeAnnotation.stringType())
.id(2)
.named("key"))
.addField(Types.buildGroup(Type.Repetition.OPTIONAL)
.addField(Types.primitive(PrimitiveTypeName.DOUBLE, Type.Repetition.REQUIRED).id(4).named("x"))
.addField(Types.primitive(PrimitiveTypeName.DOUBLE, Type.Repetition.REQUIRED).id(5).named("y"))
.id(3)
.named("value"))
.named("custom_key_value_name"))
.as(LogicalTypeAnnotation.mapType())
.id(1)
.named("m"))
.named("table");

MessageType actual = ParquetSchemaUtil.pruneColumns(mapSchema, projection);
Assert.assertEquals("Pruned schema should not rename repeated struct", expected, actual);
}

@Test
public void testPruneColumnsList() {
// project map.value.x and map.value.y
Schema projection = new Schema(
NestedField.optional(1, "m", ListType.ofOptional(3,
StructType.of(
NestedField.required(4, "x", DoubleType.get()),
NestedField.required(5, "y", DoubleType.get())
)
))
);

MessageType expected = Types.buildMessage()
.addField(Types.buildGroup(Type.Repetition.OPTIONAL)
.addField(Types.buildGroup(Type.Repetition.REPEATED)
.addField(Types.buildGroup(Type.Repetition.OPTIONAL)
.addField(Types.primitive(PrimitiveTypeName.DOUBLE, Type.Repetition.REQUIRED).id(4).named("x"))
.addField(Types.primitive(PrimitiveTypeName.DOUBLE, Type.Repetition.REQUIRED).id(5).named("y"))
.id(3)
.named("custom_element_name"))
.named("custom_repeated_name"))
.as(LogicalTypeAnnotation.listType())
.id(1)
.named("m"))
.named("table");

MessageType actual = ParquetSchemaUtil.pruneColumns(listSchema, projection);
Assert.assertEquals("Pruned schema should not rename repeated struct", expected, actual);
}
}
136 changes: 0 additions & 136 deletions parquet/src/test/java/org/apache/iceberg/parquet/TestPruneColumns.java

This file was deleted.