hprose.util.CaseInsensitiveMap Maven / Gradle / Ivy

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|                                                          |
|                          hprose                          |
|                                                          |
| Official WebSite: http://www.hprose.com/                 |
|                   http://www.hprose.org/                 |
|                                                          |
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/**********************************************************\
 *                                                        *
 * CaseInsensitiveMap.java                                *
 *                                                        *
 * CaseInsensitiveMap class for Java.                     *
 *                                                        *
 * LastModified: Aug 4, 2016                              *
 * Author: Ma Bingyao                   *
 *                                                        *
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package hprose.util;

import java.util.HashMap;

public class CaseInsensitiveMap extends HashMap {
    private final HashMap caseInsensitiveKeys;
    public CaseInsensitiveMap(int initialCapacity, float loadFactor) {
        super(initialCapacity, loadFactor);
        this.caseInsensitiveKeys = new HashMap();
    }

    public CaseInsensitiveMap(int initialCapacity) {
        super(initialCapacity);
        this.caseInsensitiveKeys = new HashMap();
    }

    public CaseInsensitiveMap() {
        super();
        this.caseInsensitiveKeys = new HashMap();
    }

    private String convertKey(Object key) {
        return ((key instanceof char[]) ? new String((char[]) key) : key.toString()).toLowerCase();
    }

    @Override
    public V put(K key, V value) {
        this.caseInsensitiveKeys.put(convertKey(key), key);
        return super.put(key, value);
    }

    @Override
    public boolean containsKey(Object key) {
        return (key instanceof String && this.caseInsensitiveKeys.containsKey(convertKey(key)));
    }

    @Override
    public V get(Object key) {
        return super.get(this.caseInsensitiveKeys.get(convertKey(key)));
    }

    @Override
    public V remove(Object key) {
        return super.remove(this.caseInsensitiveKeys.remove(convertKey(key)));
    }

    @Override
    public void clear() {
        this.caseInsensitiveKeys.clear();
        super.clear();
    }
}