@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();
}
/**
* 根据构造函数参数，创建一个对象。
*
* @param args 构造函数参数
* @return 新对象
*/
public T born(Object... args) {
BornContext<T> bc = Borns.eval(klass, args);
if (null == bc) throw new BorningException(klass, args);
return bc.doBorn();
}
/**
* 获取对象构建器
*
* @param argTypes 构造函数参数类型数组
* @return 当前对象构建方式
* @throws BorningException 当没有发现合适的 Borning 时抛出
*/
public Borning<T> getBorningByArgTypes(Class<?>... argTypes) throws BorningException {
BornContext<T> bc = Borns.evalByArgTypes(klass, argTypes);
if (null == bc) throw new BorningException(klass, argTypes);
return bc.getBorning();
}
/**
* 获取对象构建器
*
* @param args 构造函数参数
* @return 当前对象的构建方式。
* @throws BorningException 当没有发现合适的 Borning 时抛出
* @see org.nutz.lang.born.Borning
*/
public Borning<T> getBorning(Object... args) throws BorningException {
BornContext<T> bc = Borns.eval(klass, args);
if (null == bc) throw new BorningException(klass, args);
return bc.getBorning();
}
