StreamMessage.java 文件源码

/**
 * There is no way to enumerate inscope namespaces for XMLStreamReader. That means
 * namespaces declared in envelope, and body tags need to be computed using their
 * {@link TagInfoset}s.
 *
 * @return array of the even length of the form { prefix0, uri0, prefix1, uri1, ... }
 */
private String[] getInscopeNamespaces() {
    NamespaceSupport nss = new NamespaceSupport();

    nss.pushContext();
    for(int i=0; i < envelopeTag.ns.length; i+=2) {
        nss.declarePrefix(envelopeTag.ns[i], envelopeTag.ns[i+1]);
    }

    nss.pushContext();
    for(int i=0; i < bodyTag.ns.length; i+=2) {
        nss.declarePrefix(bodyTag.ns[i], bodyTag.ns[i+1]);
    }

    List<String> inscope = new ArrayList<String>();
    for( Enumeration en = nss.getPrefixes(); en.hasMoreElements(); ) {
        String prefix = (String)en.nextElement();
        inscope.add(prefix);
        inscope.add(nss.getURI(prefix));
    }
    return inscope.toArray(new String[inscope.size()]);
}