TypeInfoSetImpl.java 文件源码

public Map<String,String> getXmlNs(String namespaceUri) {
    if(xmlNsCache==null) {
        xmlNsCache = new HashMap<String,Map<String,String>>();

        for (ClassInfoImpl<T, C, F, M> ci : beans().values()) {
            XmlSchema xs = reader.getPackageAnnotation( XmlSchema.class, ci.getClazz(), null );
            if(xs==null)
                continue;

            String uri = xs.namespace();
            Map<String,String> m = xmlNsCache.get(uri);
            if(m==null)
                xmlNsCache.put(uri,m=new HashMap<String, String>());

            for( XmlNs xns : xs.xmlns() ) {
                m.put(xns.prefix(),xns.namespaceURI());
            }
        }
    }

    Map<String,String> r = xmlNsCache.get(namespaceUri);
    if(r!=null)     return r;
    else            return Collections.emptyMap();
}