/**
* 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.exec.vector.expressions;
import org.apache.hadoop.hive.ql.exec.vector.BytesColumnVector;
/**
* Vectorized implementation of Bin(long) function that returns string.
*/
public class FuncBin extends FuncLongToString {
private static final long serialVersionUID = 1L;
public FuncBin(int inputCol, int outputCol) {
super(inputCol, outputCol);
}
public FuncBin() {
super();
}
@Override
void prepareResult(int i, long[] vector, BytesColumnVector outV) {
long num = vector[i];
// Extract the bits of num into bytes[] from right to left
int len = 0;
do {
len++;
bytes[bytes.length - len] = (byte) ('0' + (num & 1));
num >>>= 1;
} while (num != 0);
outV.setVal(i, bytes, bytes.length - len, len);
}
}