cn.hutool.core.bean.BeanInfoCache Maven / Gradle / Ivy
package cn.hutool.core.bean;
import cn.hutool.core.lang.func.Func0;
import cn.hutool.core.map.ReferenceConcurrentMap;
import cn.hutool.core.map.WeakConcurrentMap;
import java.beans.PropertyDescriptor;
import java.util.Map;
/**
* Bean属性缓存
* 缓存用于防止多次反射造成的性能问题
*
* @author Looly
*/
public enum BeanInfoCache {
INSTANCE;
private final WeakConcurrentMap, Map> pdCache = new WeakConcurrentMap<>();
private final WeakConcurrentMap, Map> ignoreCasePdCache = new WeakConcurrentMap<>();
/**
* 获得属性名和{@link PropertyDescriptor}Map映射
*
* @param beanClass Bean的类
* @param ignoreCase 是否忽略大小写
* @return 属性名和{@link PropertyDescriptor}Map映射
*/
public Map getPropertyDescriptorMap(Class beanClass, boolean ignoreCase) {
return getCache(ignoreCase).get(beanClass);
}
/**
* 获得属性名和{@link PropertyDescriptor}Map映射
*
* @param beanClass Bean的类
* @param ignoreCase 是否忽略大小写
* @param supplier 缓存对象产生函数
* @return 属性名和{@link PropertyDescriptor}Map映射
* @since 5.4.1
*/
public Map getPropertyDescriptorMap(
Class beanClass,
boolean ignoreCase,
Func0> supplier) {
return getCache(ignoreCase).computeIfAbsent(beanClass, (key)->supplier.callWithRuntimeException());
}
/**
* 加入缓存
*
* @param beanClass Bean的类
* @param fieldNamePropertyDescriptorMap 属性名和{@link PropertyDescriptor}Map映射
* @param ignoreCase 是否忽略大小写
*/
public void putPropertyDescriptorMap(Class beanClass, Map fieldNamePropertyDescriptorMap, boolean ignoreCase) {
getCache(ignoreCase).put(beanClass, fieldNamePropertyDescriptorMap);
}
/**
* 清空缓存
*
* @since 5.7.21
*/
public void clear() {
this.pdCache.clear();
this.ignoreCasePdCache.clear();
}
/**
* 根据是否忽略字段名的大小写，返回不用Cache对象
*
* @param ignoreCase 是否忽略大小写
* @return {@link ReferenceConcurrentMap}
* @since 5.4.1
*/
private ReferenceConcurrentMap, Map> getCache(boolean ignoreCase) {
return ignoreCase ? ignoreCasePdCache : pdCache;
}
}