cn.hutool.core.map.CamelCaseMap Maven / Gradle / Ivy
package cn.hutool.core.map;
import cn.hutool.core.util.StrUtil;
import java.io.Serializable;
import java.util.HashMap;
import java.util.Map;
import java.util.function.Function;
/**
* 驼峰Key风格的Map
* 对KEY转换为驼峰，get("int_value")和get("intValue")获得的值相同，put进入的值也会被覆盖
*
* @param 键类型
* @param 值类型
* @author Looly
* @since 4.0.7
*/
public class CamelCaseMap extends FuncKeyMap {
private static final long serialVersionUID = 4043263744224569870L;
// ------------------------------------------------------------------------- Constructor start
/**
* 构造
*/
public CamelCaseMap() {
this(DEFAULT_INITIAL_CAPACITY);
}
/**
* 构造
*
* @param initialCapacity 初始大小
*/
public CamelCaseMap(int initialCapacity) {
this(initialCapacity, DEFAULT_LOAD_FACTOR);
}
/**
* 构造
*
* @param m Map
*/
public CamelCaseMap(Map m) {
this(DEFAULT_LOAD_FACTOR, m);
}
/**
* 构造
*
* @param loadFactor 加载因子
* @param m 初始Map，数据会被默认拷贝到一个新的HashMap中
*/
public CamelCaseMap(float loadFactor, Map m) {
this(m.size(), loadFactor);
this.putAll(m);
}
/**
* 构造
*
* @param initialCapacity 初始大小
* @param loadFactor 加载因子
*/
public CamelCaseMap(int initialCapacity, float loadFactor) {
this(MapBuilder.create(new HashMap<>(initialCapacity, loadFactor)));
}
/**
* 构造
* 注意此构造将传入的Map作为被包装的Map，针对任何修改，传入的Map都会被同样修改。
*
* @param emptyMapBuilder Map构造器，必须构造空的Map
*/
CamelCaseMap(MapBuilder emptyMapBuilder) {
// issue#I5VRHW@Gitee 使Function可以被序列化
super(emptyMapBuilder.build(), (Function & Serializable)(key) -> {
if (key instanceof CharSequence) {
key = StrUtil.toCamelCase(key.toString());
}
//noinspection unchecked
return (K) key;
});
}
// ------------------------------------------------------------------------- Constructor end
}