org.apache.hadoop.hive.ql.udf.generic.UDTFCollector Maven / Gradle / Ivy
/*
* 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.generic;
import org.apache.hadoop.hive.ql.exec.UDTFOperator;
import org.apache.hadoop.hive.ql.metadata.HiveException;
/**
* UDTFCollector collects data from a GenericUDTF and passes the data to a
* UDTFOperator.
*/
public class UDTFCollector implements Collector {
/*
* (non-Javadoc)
*
* @see
* org.apache.hadoop.hive.ql.udf.generic.Collector#collect(java.lang.Object)
*/
final UDTFOperator op;
private transient int counter;
public UDTFCollector(UDTFOperator op) {
this.op = op;
}
@Override
public void collect(Object input) throws HiveException {
op.forwardUDTFOutput(input);
counter++;
}
public int getCounter() {
return counter;
}
public void reset() {
counter = 0;
}
}