/**
* 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.common.type;
import org.apache.commons.lang.StringUtils;
public abstract class HiveBaseChar {
protected String value;
protected HiveBaseChar() {
}
/**
* Sets the string value to a new value, obeying the max length defined for this object.
* @param val new value
*/
public void setValue(String val, int maxLength) {
value = HiveBaseChar.enforceMaxLength(val, maxLength);
}
public void setValue(HiveBaseChar val, int maxLength) {
setValue(val.value, maxLength);
}
public static String enforceMaxLength(String val, int maxLength) {
if (val == null) {
return null;
}
String value = val;
if (maxLength > 0) {
int valLength = val.codePointCount(0, val.length());
if (valLength > maxLength) {
// Truncate the excess chars to fit the character length.
// Also make sure we take supplementary chars into account.
value = val.substring(0, val.offsetByCodePoints(0, maxLength));
}
}
return value;
}
public static String getPaddedValue(String val, int maxLength) {
if (val == null) {
return null;
}
if (maxLength < 0) {
return val;
}
int valLength = val.codePointCount(0, val.length());
if (valLength > maxLength) {
return enforceMaxLength(val, maxLength);
}
if (maxLength > valLength) {
// Make sure we pad the right amount of spaces; valLength is in terms of code points,
// while StringUtils.rpad() is based on the number of java chars.
int padLength = val.length() + (maxLength - valLength);
val = StringUtils.rightPad(val, padLength);
}
return val;
}
public String getValue() {
return value;
}
public int getCharacterLength() {
return value.codePointCount(0, value.length());
}
@Override
public int hashCode() {
return getValue().hashCode();
}
@Override
public String toString() {
return getValue();
}
}