Skip to content
Merged
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
76 changes: 76 additions & 0 deletions parquet/src/main/java/org/apache/iceberg/parquet/RemoveIds.java
Original file line number Diff line number Diff line change
@@ -0,0 +1,76 @@
/*
* 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.List;
import org.apache.parquet.schema.GroupType;
import org.apache.parquet.schema.MessageType;
import org.apache.parquet.schema.PrimitiveType;
import org.apache.parquet.schema.Type;
import org.apache.parquet.schema.Types;

public class RemoveIds extends ParquetTypeVisitor<Type> {

@Override
public Type message(MessageType message, List<Type> fields) {
Types.MessageTypeBuilder builder = Types.buildMessage();
for (Type field : struct(message.asGroupType(), fields).asGroupType().getFields()) {
builder.addField(field);
}
return builder.named(message.getName());
}

@Override
public Type struct(GroupType struct, List<Type> fields) {
Types.GroupBuilder<GroupType> builder = Types.buildGroup(struct.getRepetition());
for (Type field : fields) {
builder.addField(field);
}
return builder.named(struct.getName());
}

@Override
public Type list(GroupType array, Type item) {
return Types.list(array.getRepetition())
.element(item)
.named(array.getName());
}

@Override
public Type map(GroupType map, Type key, Type value) {
return Types.map(map.getRepetition())
.key(key)
.value(value)
.named(map.getName());
}

@Override
public Type primitive(PrimitiveType primitive) {
return Types.primitive(primitive.getPrimitiveTypeName(), primitive.getRepetition())
.length(primitive.getTypeLength())
.as(primitive.getLogicalTypeAnnotation())
.named(primitive.getName());
}

public static MessageType removeIds(MessageType type) {
return (MessageType) ParquetTypeVisitor.visit(type, new RemoveIds());
}

}
Original file line number Diff line number Diff line change
Expand Up @@ -86,10 +86,10 @@ public void testAssignIdsByNameMapping() {
Schema schema = new Schema(TypeUtil.assignFreshIds(structType, new AtomicInteger(0)::incrementAndGet)
.asStructType().fields());
NameMapping nameMapping = MappingUtil.create(schema);
MessageType messageType = ParquetSchemaUtil.convert(schema, "complex_schema");
MessageType typeWithIdsFromNameMapping = ParquetSchemaUtil.applyNameMapping(messageType, nameMapping);
Schema newSchema = ParquetSchemaUtil.convert(typeWithIdsFromNameMapping);
MessageType messageTypeWithIds = ParquetSchemaUtil.convert(schema, "parquet_type");
MessageType messageTypeWithIdsFromNameMapping = ParquetSchemaUtil
.applyNameMapping(RemoveIds.removeIds(messageTypeWithIds), nameMapping);

Assert.assertEquals(schema.asStruct(), newSchema.asStruct());
Assert.assertEquals(messageTypeWithIds, messageTypeWithIdsFromNameMapping);
}
}