import com.sun.xml.internal.bind.v2.runtime.unmarshaller.XsiTypeLoader; //导入依赖的package包/类
public Loader getLoader(JAXBContextImpl context, boolean typeSubstitutionCapable) {
    if(loader==null) {
        // these variables have to be set before they are initialized,
        // because the initialization may build other loaders and they may refer to this.
        StructureLoader sl = new StructureLoader(this);
        loader = sl;
        if(ci.hasSubClasses())
            loaderWithTypeSubst = new XsiTypeLoader(this);
        else
            // optimization. we know there can be no @xsi:type
            loaderWithTypeSubst = loader;


        sl.init(context,this,ci.getAttributeWildcard());
    }
    if(typeSubstitutionCapable)
        return loaderWithTypeSubst;
    else
        return loader;
}
 

import com.sun.xml.internal.bind.v2.runtime.unmarshaller.XsiTypeLoader; //导入依赖的package包/类
public LeafBeanInfoImpl(JAXBContextImpl grammar, RuntimeLeafInfo li) {
    super(grammar,li,li.getClazz(),li.getTypeNames(),li.isElement(),true,false);

    xducer = li.getTransducer();
    loader = new TextLoader(xducer);
    loaderWithSubst = new XsiTypeLoader(this);

    if(isElement())
        tagName = grammar.nameBuilder.createElementName(li.getElementName());
    else
        tagName = null;
}