/**
* 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.ql.udf.ptf;
import java.util.ArrayList;
import java.util.List;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.ql.plan.PTFDesc;
import org.apache.hadoop.hive.ql.plan.ptf.PartitionedTableFunctionDef;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils;
import org.apache.hadoop.hive.serde2.objectinspector.StructObjectInspector;
import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils.ObjectInspectorCopyOption;
public class NoopWithMapStreaming extends NoopWithMap {
List<Object> rows;
StructObjectInspector inputOI;
NoopWithMapStreaming() {
rows = new ArrayList<Object>();
}
public void initializeStreaming(Configuration cfg,
StructObjectInspector inputOI, boolean isMapSide) throws HiveException {
this.inputOI = inputOI;
canAcceptInputAsStream = true;
}
public List<Object> processRow(Object row) throws HiveException {
if (!canAcceptInputAsStream()) {
throw new HiveException(String.format(
"Internal error: PTF %s, doesn't support Streaming", getClass()
.getName()));
}
rows.clear();
row = ObjectInspectorUtils.copyToStandardObject(row, inputOI,
ObjectInspectorCopyOption.WRITABLE);
rows.add(row);
return rows;
}
public static class NoopWithMapStreamingResolver extends NoopWithMapResolver {
@Override
protected TableFunctionEvaluator createEvaluator(PTFDesc ptfDesc,
PartitionedTableFunctionDef tDef) {
return new NoopStreaming();
}
}
}