org.h2.value.ValueStringFixed Maven / Gradle / Ivy
/*
* Copyright 2004-2011 H2 Group. Multiple-Licensed under the H2 License,
* Version 1.0, and under the Eclipse Public License, Version 1.0
* (http://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.value;
import org.h2.constant.SysProperties;
import org.h2.util.StringUtils;
/**
* Implementation of the CHAR data type.
*/
public class ValueStringFixed extends ValueString {
private static final ValueStringFixed EMPTY = new ValueStringFixed("");
protected ValueStringFixed(String value) {
super(value);
}
private static String trimRight(String s) {
int endIndex = s.length() - 1;
int i = endIndex;
while (i >= 0 && s.charAt(i) == ' ') {
i--;
}
s = i == endIndex ? s : s.substring(0, i + 1);
return s;
}
public int getType() {
return Value.STRING_FIXED;
}
/**
* Get or create a fixed length string value for the given string.
* Spaces at the end of the string will be removed.
*
* @param s the string
* @return the value
*/
public static ValueStringFixed get(String s) {
s = trimRight(s);
if (s.length() == 0) {
return EMPTY;
}
ValueStringFixed obj = new ValueStringFixed(StringUtils.cache(s));
if (s.length() > SysProperties.OBJECT_CACHE_MAX_PER_ELEMENT_SIZE) {
return obj;
}
return (ValueStringFixed) Value.cache(obj);
}
protected ValueString getNew(String s) {
return ValueStringFixed.get(s);
}
}