@SuppressWarnings({"rawtypes", "unchecked"})
public void init() {
List<LinkField> lfs = new ArrayList<LinkField>();
lfs.addAll(ones.getAll());
lfs.addAll(manys.getAll());
lfs.addAll(manymanys.getAll());
if (lfs.isEmpty()) return;
if (log.isDebugEnabled()) log.debug("Found links , enable lazy!! -->" + type);
Mirror<T> mirror = Mirror.me(type);
List<InterceptorPair> interceptorPairs = new ArrayList<InterceptorPair>();
// 准备拦截器
for (LinkField lf : lfs) {
String fieldName = lf.getName();
try {
Method setter = mirror.getSetter(mirror.getField(fieldName));
LazyMethodInterceptor lmi = new LazyMethodInterceptor(setter, fieldName);
interceptorPairs.add(
new InterceptorPair(
lmi,
MethodMatcherFactory.matcher(
"^(get|set)" + Strings.upperFirst(fieldName) + "$")));
} catch (Throwable e) {
if (log.isWarnEnabled()) log.warn("Not setter found for LazyLoading ?!", e);
}
}
// 生成Aop化的类
ClassAgent agent = new AsmClassAgent();
for (InterceptorPair interceptorPair : interceptorPairs)
agent.addInterceptor(
interceptorPair.getMethodMatcher(), interceptorPair.getMethodInterceptor());
Class lazyClass = agent.define(DefaultClassDefiner.defaultOne(), type);
// 检查对象的创建方法
BornContext<T> bc = Borns.evalByArgTypes(type, ResultSet.class);
if (null == bc) this.bornByDefault = Mirror.me(lazyClass).getBorningByArgTypes();
else this.bornByRS = bc.getBorning();
}
/**
* 当一个类使用<T,K>来定义泛型时,本方法返回类的一个字段的具体类型。
*
* @param me
* @param field
* @return
*/
public static Type getFieldType(Mirror<?> me, String field) throws NoSuchFieldException {
return getFieldType(me, me.getField(field));
}