// Copyright (c) 2013, Facebook, Inc. All rights reserved.
/**
* 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 com.facebook.hive.orc.lazy;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import com.facebook.hive.orc.OrcProto;
import com.facebook.hive.orc.OrcStruct.Field;
import org.apache.hadoop.hive.serde2.objectinspector.StructField;
import org.apache.hadoop.hive.serde2.typeinfo.StructTypeInfo;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfo;
public class OrcLazyRowObjectInspector extends OrcLazyStructObjectInspector {
public OrcLazyRowObjectInspector(StructTypeInfo info) {
super(info.getAllStructFieldNames().size());
ArrayList<String> fieldNames = info.getAllStructFieldNames();
ArrayList<TypeInfo> fieldTypes = info.getAllStructFieldTypeInfos();
for(int i=0; i < fieldNames.size(); ++i) {
fields.add(new Field(fieldNames.get(i),
OrcLazyObjectInspectorUtils.createLazyObjectInspector(fieldTypes.get(i)), i));
}
}
public OrcLazyRowObjectInspector(int columnId, List<OrcProto.Type> types) {
super(types.get(columnId).getSubtypesCount());
OrcProto.Type type = types.get(columnId);
int fieldCount = type.getSubtypesCount();
for(int i=0; i < fieldCount; ++i) {
int fieldType = type.getSubtypes(i);
fields.add(new Field(type.getFieldNames(i),
OrcLazyObjectInspectorUtils.createLazyObjectInspector(fieldType, types), i));
}
}
@Override
public Object getStructFieldData(Object data, StructField fieldRef) {
int offset = ((Field) fieldRef).getOffset();
try {
OrcLazyObject obj = ((OrcLazyRow) data).getFieldValue(offset);
if (obj != null) {
obj.materialize();
return obj.nextIsNull() ? null : obj;
}
return null;
} catch (IOException e) {
throw new RuntimeException(e);
}
}
@Override
public StructField getStructFieldRef(String fieldName) {
for(StructField field: fields) {
if (field.getFieldName().equals(fieldName)) {
return field;
}
}
return null;
}
@Override
public List<Object> getStructFieldsDataAsList(Object data) {
OrcLazyRow row = (OrcLazyRow) data;
int numFields = row.getNumFields();
List<Object> result = new ArrayList<Object>(numFields);
for (int i = 0; i < numFields; i++) {
try {
OrcLazyObject obj = (OrcLazyObject) row.getFieldValue(i);
result.add(obj == null || obj.nextIsNull() ? null : obj);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
return result;
}
}