1package eu.siacs.conversations.xmpp.stanzas;
 2
 3import eu.siacs.conversations.xml.Element;
 4
 5public class IqPacket extends AbstractAcknowledgeableStanza {
 6
 7	public enum TYPE {
 8		ERROR,
 9		SET,
10		RESULT,
11		GET,
12		INVALID,
13		TIMEOUT
14	}
15
16	public IqPacket(final TYPE type) {
17		super("iq");
18		if (type != TYPE.INVALID) {
19			this.setAttribute("type", type.toString().toLowerCase());
20		}
21	}
22
23	public IqPacket() {
24		super("iq");
25	}
26
27	public Element query() {
28		Element query = findChild("query");
29		if (query == null) {
30			query = addChild("query");
31		}
32		return query;
33	}
34
35	public Element query(final String xmlns) {
36		final Element query = query();
37		query.setAttribute("xmlns", xmlns);
38		return query();
39	}
40
41	public TYPE getType() {
42		final String type = getAttribute("type");
43		if (type == null) {
44			return TYPE.INVALID;
45		}
46		switch (type) {
47			case "error":
48				return TYPE.ERROR;
49			case "result":
50				return TYPE.RESULT;
51			case "set":
52				return TYPE.SET;
53			case "get":
54				return TYPE.GET;
55			case "timeout":
56				return TYPE.TIMEOUT;
57			default:
58				return TYPE.INVALID;
59		}
60	}
61
62	public IqPacket generateResponse(final TYPE type) {
63		final IqPacket packet = new IqPacket(type);
64		packet.setTo(this.getFrom());
65		packet.setId(this.getId());
66		return packet;
67	}
68
69	@Override
70	public boolean valid() {
71		String id = getId();
72		return id != null && super.valid();
73	}
74
75}