/**
* 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.hadoop.hive.serde2.dynamic_type;
import java.util.ArrayList;
import java.util.List;
import org.apache.hadoop.hive.serde.Constants;
import org.apache.hadoop.hive.serde2.SerDeException;
import org.apache.hadoop.hive.serde2.objectinspector.ListObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
import org.apache.hadoop.hive.serde2.thrift.WriteNullsProtocol;
import org.apache.thrift.TException;
import org.apache.thrift.protocol.TList;
import org.apache.thrift.protocol.TProtocol;
import org.apache.thrift.protocol.TType;
/**
* DynamicSerDeTypeList.
*
*/
public class DynamicSerDeTypeList extends DynamicSerDeTypeBase {
@Override
public boolean isPrimitive() {
return false;
}
@Override
public boolean isList() {
return true;
}
// production is: list<FieldType()>
private static final int FD_TYPE = 0;
@Override
public Class getRealType() {
return java.util.ArrayList.class;
}
public DynamicSerDeTypeList(int i) {
super(i);
}
public DynamicSerDeTypeList(thrift_grammar p, int i) {
super(p, i);
}
public DynamicSerDeTypeBase getElementType() {
return ((DynamicSerDeFieldType) jjtGetChild(FD_TYPE)).getMyType();
}
@Override
public String toString() {
return Constants.LIST_TYPE_NAME + "<" + getElementType().toString() + ">";
}
@Override
public ArrayList<Object> deserialize(Object reuse, TProtocol iprot)
throws SerDeException, TException, IllegalAccessException {
TList thelist = iprot.readListBegin();
if (thelist == null) {
return null;
}
ArrayList<Object> deserializeReuse;
if (reuse != null) {
deserializeReuse = (ArrayList<Object>) reuse;
// Trim to the size needed
while (deserializeReuse.size() > thelist.size) {
deserializeReuse.remove(deserializeReuse.size() - 1);
}
} else {
deserializeReuse = new ArrayList<Object>();
}
deserializeReuse.ensureCapacity(thelist.size);
for (int i = 0; i < thelist.size; i++) {
if (i + 1 > deserializeReuse.size()) {
deserializeReuse.add(getElementType().deserialize(null, iprot));
} else {
deserializeReuse.set(i, getElementType().deserialize(
deserializeReuse.get(i), iprot));
}
}
// in theory, the below call isn't needed in non thrift_mode, but let's not
// get too crazy
iprot.readListEnd();
return deserializeReuse;
}
@Override
public void serialize(Object o, ObjectInspector oi, TProtocol oprot)
throws TException, SerDeException, NoSuchFieldException, IllegalAccessException {
ListObjectInspector loi = (ListObjectInspector) oi;
ObjectInspector elementObjectInspector = loi
.getListElementObjectInspector();
DynamicSerDeTypeBase mt = getElementType();
WriteNullsProtocol nullProtocol =
(oprot instanceof WriteNullsProtocol) ? (WriteNullsProtocol) oprot : null;
if (o instanceof List) {
List<?> list = (List<?>) o;
oprot.writeListBegin(new TList(mt.getType(), list.size()));
for (Object element : list) {
if (element == null) {
assert (nullProtocol != null);
nullProtocol.writeNull();
} else {
mt.serialize(element, elementObjectInspector, oprot);
}
}
} else {
Object[] list = (Object[]) o;
oprot.writeListBegin(new TList(mt.getType(), list.length));
for (Object element : list) {
if (element == null && nullProtocol != null) {
assert (nullProtocol != null);
nullProtocol.writeNull();
} else {
mt.serialize(element, elementObjectInspector, oprot);
}
}
}
// in theory, the below call isn't needed in non thrift_mode, but let's not
// get too crazy
oprot.writeListEnd();
}
@Override
public byte getType() {
return TType.LIST;
}
}