import com.sun.tools.internal.xjc.reader.gbind.Element; //导入依赖的package包/类
/**
 * Finds a {@link XSParticle} that can serve as the representative property of
 * the given {@link ConnectedComponent}.
 *
 * The representative property is used for reporting an error location and
 * taking {@link BIProperty} customization. Right now, the algorithm is just pick
 * the first one with {@link BIProperty}, but one can think of a better algorithm,
 * such as taking a choice of (A|B) if CC={A,B}.
 */
private XSParticle findSourceParticle(ConnectedComponent cc) {
    XSParticle first = null;

    for (Element e : cc) {
        GElement ge = (GElement)e;
        for (XSParticle p : ge.particles) {
            if(first==null)
                first = p;
            if(getLocalPropCustomization(p)!=null)
                return p;
        }
        // if there are multiple property customizations,
        // all but one will be left unused, which will be detected as an error
        // later, so no need to check that now.
    }

    // if no customization was found, just use the first one.
    return first;
}
 

import com.sun.tools.internal.xjc.reader.gbind.Element; //导入依赖的package包/类
public Element elementDecl(XSElementDecl decl) {
    QName n = BGMBuilder.getName(decl);

    GElementImpl e = decls.get(n);
    if(e==null)
        decls.put(n,e=new GElementImpl(n,decl));

    e.particles.add(current);
    assert current.getTerm()==decl;

    return e;
}