cn.hutool.core.map.MapWrapper Maven / Gradle / Ivy
package cn.hutool.core.map;
import java.io.Serializable;
import java.util.Collection;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
/**
* Map包装类，通过包装一个已有Map实现特定功能。例如自定义Key的规则或Value规则
*
* @author looly
*
* @param 键类型
* @param 值类型
* @author looly
* @since 4.3.3
*/
public class MapWrapper implements Map, Iterable>, Serializable, Cloneable {
private static final long serialVersionUID = -7524578042008586382L;
/** 默认增长因子 */
protected static final float DEFAULT_LOAD_FACTOR = 0.75f;
/** 默认初始大小 */
protected static final int DEFAULT_INITIAL_CAPACITY = 1 << 4; // aka 16
private Map raw;
/**
* 构造
*
* @param raw 被包装的Map
*/
public MapWrapper(Map raw) {
this.raw = raw;
}
/**
* 获取原始的Map
* @return Map
*/
public Map getRaw(){
return this.raw;
}
@Override
public int size() {
return raw.size();
}
@Override
public boolean isEmpty() {
return raw.isEmpty();
}
@Override
public boolean containsKey(Object key) {
return raw.containsKey(key);
}
@Override
public boolean containsValue(Object value) {
return raw.containsValue(value);
}
@Override
public V get(Object key) {
return raw.get(key);
}
@Override
public V put(K key, V value) {
return raw.put(key, value);
}
@Override
public V remove(Object key) {
return raw.remove(key);
}
@Override
public void putAll(Map m) {
raw.putAll(m);
}
@Override
public void clear() {
raw.clear();
}
@Override
public Set keySet() {
return raw.keySet();
}
@Override
public Collection values() {
return raw.values();
}
@Override
public Set> entrySet() {
return raw.entrySet();
}
@Override
public Iterator> iterator() {
return this.entrySet().iterator();
}
}