package util;
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import java.io.Serializable;
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public class IgnoreCaseString implements Comparable<IgnoreCaseString>, Serializable {
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/**
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* Member Description
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*/
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private static final long serialVersionUID = -247637491060007575L;
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public static final IgnoreCaseString EMPTY = IgnoreCaseString.valueOf("");
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/**
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* origStr string对象
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*/
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private final String origStr;
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/**
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* lowerCaseStr string对象
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*/
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private final String lowerCaseStr;
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// 需要抛出异常， Assert.assertEquals("d", IgnoreCaseString.valueOf(null).toString());
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public static IgnoreCaseString valueOf(String str) {
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if (str == null) {
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return null;
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}
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return new IgnoreCaseString(str);
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}
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/**
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*
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* @param value
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* String参数
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*/
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private IgnoreCaseString(String value) {
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if (value == null) {
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throw new NullPointerException("value不能为空");
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}
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origStr = value;
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lowerCaseStr = value.toLowerCase();
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}
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public char charAt(int i) {
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return origStr.charAt(i);
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}
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public int compareTo(IgnoreCaseString o) {
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if (o == null) {
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return 1;
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}
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if (this == o) {
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return 0;
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}
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return lowerCaseStr.compareTo(o.lowerCaseStr);
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}
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public boolean contains(IgnoreCaseString other) {
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if (other == null) {
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return false;
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}
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return lowerCaseStr.contains(other.lowerCaseStr);
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}
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@Override
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public boolean equals(Object obj) {
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if (obj == null) {
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return false;
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}
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if (obj instanceof IgnoreCaseString) {
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IgnoreCaseString other = (IgnoreCaseString) obj;
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return lowerCaseStr.equals(other.lowerCaseStr);
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}
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return false;
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}
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/**
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* @return byte数组 origStr转换成byte数组
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*/
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public byte[] getBytes() {
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return origStr.getBytes();
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}
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@Override
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public int hashCode() {
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final int PRIME = 31;
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int result = 1;
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result = PRIME * result + ((lowerCaseStr == null) ? 0 : lowerCaseStr.hashCode());
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return result;
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}
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public int length() {
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return origStr.length();
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}
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// TODO ztt
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// null的情况是否应该存在
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public String[] split(String regex) {
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if (origStr == null) {
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return null;
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}
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return origStr.split(regex);
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}
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public char[] toCharArray() {
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return origStr.toCharArray();
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}
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public String toLowerCase() {
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return origStr.toLowerCase();
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}
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@Override
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public String toString() {
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return origStr;
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}
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public String toUpperCase() {
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return origStr.toUpperCase();
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}
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public String trim() {
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return origStr.trim();
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}
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}
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