org.apache.hadoop.hive.ql.udf.generic.GenericUDFRTrim Maven / Gradle / Ivy

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/*
 * 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 com.facebook.presto.hive.$internal.org.apache.commons.lang.StringUtils;
import org.apache.hadoop.hive.ql.exec.Description;
import org.apache.hadoop.hive.ql.exec.vector.VectorizedExpressions;
import org.apache.hadoop.hive.ql.exec.vector.expressions.StringRTrim;

/**
 * UDFRTrim.
 *
 */
@Description(name = "rtrim",
    value = "_FUNC_(str) - Removes the trailing space characters from str ",
    extended = "Example:\n"
    + "  > SELECT _FUNC_('facebook   ') FROM src LIMIT 1;\n" + "  'facebook'")
@VectorizedExpressions({ StringRTrim.class })
public class GenericUDFRTrim extends GenericUDFBaseTrim {
  public GenericUDFRTrim() {
    super("rtrim");
  }

  @Override
  protected String performOp(String val) {
    return StringUtils.stripEnd(val, " ");
  }

}