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1 package samples.bidbuy;
2
3 import java.io.FileInputStream  ;
4 import java.io.FileOutputStream ;
5 import java.io.ObjectInputStream ;
6 import java.io.ObjectOutputStream ;
7 import java.util.Enumeration ;
8 import java.util.Hashtable ;
9 import java.util.Vector ;
10
11 public class RegistryService {
12
13 private static Hashtable registry = new Hashtable ();
14
15
21
22 public RegistryService() {
23 load();
24 }
25
26 public void load() {
27 try {
28 FileInputStream fis = new FileInputStream ("bid.reg");
29 ObjectInputStream ois = new ObjectInputStream ( fis );
30 registry = (Hashtable ) ois.readObject();
31 ois.close();
32 fis.close();
33 } catch(java.io.FileNotFoundException fnfe){
34 } catch(Exception e){
36 e.printStackTrace();
37 }
38 }
39
40 public void save() {
41 try {
42 FileOutputStream fos = new FileOutputStream ("bid.reg");
43 ObjectOutputStream oos = new ObjectOutputStream ( fos );
44 oos.writeObject( registry );
45 oos.close();
46 fos.close();
47 } catch(Exception e){
48 e.printStackTrace();
49 }
50 }
51
52 private Service find(Vector list, String name) {
53 Enumeration e = list.elements();
54 while (e.hasMoreElements()) {
55 Service s = (Service) e.nextElement();
56 if (s.getServiceName().equals(name)) return s;
57 }
58 return null;
59 }
60
61
65 public void Unregister(String name) {
66 Enumeration e1 = registry.keys();
67 while (e1.hasMoreElements()) {
68 Vector list = (Vector ) registry.get(e1.nextElement());
69 Enumeration e2 = list.elements();
70 while (e2.hasMoreElements()) {
71 Service s = (Service) e2.nextElement();
72 if (s.getServiceName().equals(name)) {
73 list.remove(s);
74 save();
75 }
76 }
77 }
78 }
79
80
87 public void Register(String name, String url, String stype, String wsdl) {
88 Vector list = (Vector )registry.get(stype);
89 if (list == null) registry.put(stype, list=new Vector ());
90 Service service = find(list, name);
91 if (service==null)
92 list.add(service=new Service());
93 service.setServiceName(name);
94 service.setServiceUrl(url);
95 service.setServiceType(stype);
96 service.setServiceWsdl(wsdl);
97 save();
98 }
99
100
105 public Service[] Lookup(String stype) {
106 if (!registry.containsKey(stype)) return new Service[] {};
107 Vector list = (Vector )registry.get(stype);
108 Service[] result = new Service[list.size()];
109 list.copyInto(result);
110 return result;
111 }
112
113
116 public String LookupAsString(String stype) {
117 Service[] services = Lookup(stype);
118 String result = "";
119 for (int i=0; i<services.length; i++) {
120 Service service = services[i];
121 result += service.getServiceName() + "\t" +
122 service.getServiceUrl() + "\t" +
123 service.getServiceType() + "\t" +
124 service.getServiceWsdl() + "\n";
125 }
126 return result;
127 }
128
129 }
130 |
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