org.jivesoftware.smack.provider.PacketExtensionProvider Java Examples

The following examples show how to use org.jivesoftware.smack.provider.PacketExtensionProvider. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: PacketParserUtils.java    From AndroidPNClient with Apache License 2.0 4 votes vote down vote up 
/**
 * Parses a packet extension sub-packet.
 *
 * @param elementName the XML element name of the packet extension.
 * @param namespace the XML namespace of the packet extension.
 * @param parser the XML parser, positioned at the starting element of the extension.
 * @return a PacketExtension.
 * @throws Exception if a parsing error occurs.
 */
public static PacketExtension parsePacketExtension(String elementName, String namespace, XmlPullParser parser)
        throws Exception
{
    // See if a provider is registered to handle the extension.
    Object provider = ProviderManager.getInstance().getExtensionProvider(elementName, namespace);
    if (provider != null) {
        if (provider instanceof PacketExtensionProvider) {
            return ((PacketExtensionProvider)provider).parseExtension(parser);
        }
        else if (provider instanceof Class) {
            return (PacketExtension)parseWithIntrospection(
                    elementName, (Class)provider, parser);
        }
    }
    // No providers registered, so use a default extension.
    DefaultPacketExtension extension = new DefaultPacketExtension(elementName, namespace);
    boolean done = false;
    while (!done) {
        int eventType = parser.next();
        if (eventType == XmlPullParser.START_TAG) {
            String name = parser.getName();
            // If an empty element, set the value with the empty string.
            if (parser.isEmptyElementTag()) {
                extension.setValue(name,"");
            }
            // Otherwise, get the the element text.
            else {
                eventType = parser.next();
                if (eventType == XmlPullParser.TEXT) {
                    String value = parser.getText();
                    extension.setValue(name, value);
                }
            }
        }
        else if (eventType == XmlPullParser.END_TAG) {
            if (parser.getName().equals(elementName)) {
                done = true;
            }
        }
    }
    return extension;
}