ClassInfoImpl.java 文件源码

/**
 *  XmlType allows specification of factoryClass and
 *  factoryMethod.  There are to be used if no default
 *  constructor is found.
 *
 * @return
 *      true if the factory method was found. False if not.
 */
private  boolean hasFactoryConstructor(XmlType t){
    if (t == null) return false;

    String method = t.factoryMethod();
    T fClass = reader().getClassValue(t, "factoryClass");
    if (method.length() > 0){
        if(nav().isSameType(fClass, nav().ref(XmlType.DEFAULT.class))){
            fClass = nav().use(clazz);
        }
        for(M m: nav().getDeclaredMethods(nav().asDecl(fClass))){
            //- Find the zero-arg public static method with the required return type
            if (nav().getMethodName(m).equals(method) &&
                nav().isSameType(nav().getReturnType(m), nav().use(clazz)) &&
                nav().getMethodParameters(m).length == 0 &&
                nav().isStaticMethod(m)){
                factoryMethod = m;
                break;
            }
        }
        if (factoryMethod == null){
            builder.reportError(new IllegalAnnotationException(
            Messages.NO_FACTORY_METHOD.format(nav().getClassName(nav().asDecl(fClass)), method), this ));
        }
    } else if(!nav().isSameType(fClass, nav().ref(XmlType.DEFAULT.class))){
        builder.reportError(new IllegalAnnotationException(
            Messages.FACTORY_CLASS_NEEDS_FACTORY_METHOD.format(nav().getClassName(nav().asDecl(fClass))), this ));
    }
    return factoryMethod != null;
}