org.h2.value.ValueStringFixed Maven / Gradle / Ivy
/*
* Copyright 2004-2019 H2 Group. Multiple-Licensed under the MPL 2.0,
* and the EPL 1.0 (https://h2database.com/html/license.html).
* Initial Developer: H2 Group
*/
package org.h2.value;
import org.h2.engine.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) {
return trimRight(s, 0);
}
private static String trimRight(String s, int minLength) {
int endIndex = s.length() - 1;
int i = endIndex;
while (i >= minLength && s.charAt(i) == ' ') {
i--;
}
s = i == endIndex ? s : s.substring(0, i + 1);
return s;
}
@Override
public int getValueType() {
return 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);
int length = s.length();
if (length == 0) {
return EMPTY;
}
ValueStringFixed obj = new ValueStringFixed(StringUtils.cache(s));
if (length > SysProperties.OBJECT_CACHE_MAX_PER_ELEMENT_SIZE) {
return obj;
}
return (ValueStringFixed) Value.cache(obj);
}
@Override
protected ValueString getNew(String s) {
return ValueStringFixed.get(s);
}
}