/**
* 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.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.StringLTrim;
/**
* UDFLTrim.
*
*/
@Description(name = "ltrim",
value = "_FUNC_(str) - Removes the " +
"leading space characters from str ", extended = "Example:\n"
+ " > SELECT _FUNC_(' facebook') FROM src LIMIT 1;\n" + " 'facebook'")
@VectorizedExpressions({ StringLTrim.class })
public class GenericUDFLTrim extends GenericUDFBaseTrim {
public GenericUDFLTrim() {
super("ltrim");
}
@Override
protected String performOp(String val) {
return StringUtils.stripStart(val, " ");
}
}