/**
* 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;
import org.apache.hadoop.hive.ql.exec.Description;
import org.apache.hadoop.hive.ql.exec.UDF;
import org.apache.hadoop.hive.serde2.io.DoubleWritable;
import org.apache.hadoop.io.LongWritable;
/**
* UDFCeil.
*
*/
@Description(name = "ceil,ceiling",
value = "_FUNC_(x) - Find the smallest integer not smaller than x",
extended = "Example:\n"
+ " > SELECT _FUNC_(-0.1) FROM src LIMIT 1;\n"
+ " 0\n"
+ " > SELECT _FUNC_(5) FROM src LIMIT 1;\n" + " 5")
public class UDFCeil extends UDF {
private LongWritable longWritable = new LongWritable();
public UDFCeil() {
}
public LongWritable evaluate(DoubleWritable i) {
if (i == null) {
return null;
} else {
longWritable.set((long) Math.ceil(i.get()));
return longWritable;
}
}
}