Mercurial > hg > blitz_stable

annotate src/org/dancres/jini/util/DiscoveryUtil.java @ 32:243c74d599bf

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author Dan Creswell <dan.creswell@gmail.com>
date Sat, 12 Jun 2010 10:41:47 +0100
parents 3dc0c5604566
children
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0
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1 package org.dancres.jini.util;
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2
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3 import java.lang.reflect.Field;
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4
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5 import java.rmi.RemoteException;
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6
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7 import net.jini.core.lookup.ServiceRegistrar;
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8 import net.jini.core.lookup.ServiceTemplate;
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9 import net.jini.core.lookup.ServiceMatches;
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10 import net.jini.core.lookup.ServiceItem;
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11
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12 import net.jini.core.entry.Entry;
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13
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14 public class DiscoveryUtil {
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15 public static void dumpRegistrar(ServiceRegistrar aRegistrar)
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16 throws RemoteException {
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17
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18 String[] myGroups = aRegistrar.getGroups();
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19
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20 System.out.println("Registrar ServiceID: " +
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21 aRegistrar.getServiceID());
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22 System.out.print("Groups: ");
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23 for (int i = 0; i < myGroups.length; i++) {
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24 System.out.print(myGroups[i] + " ");
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25 }
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26 System.out.println();
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27 System.out.println("LookupLocator: " + aRegistrar.getLocator());
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28 }
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29
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30 public static void dumpContents(ServiceRegistrar aRegistrar)
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31 throws RemoteException {
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32
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33 ServiceTemplate myWildcard = new ServiceTemplate(null, null, null);
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34
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35 ServiceMatches myMatches = aRegistrar.lookup(myWildcard,
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36 Integer.MAX_VALUE);
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37
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38 System.out.println("Total services: " + myMatches.totalMatches);
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39
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40 for (int i = 0; i < myMatches.totalMatches; i++) {
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41 ServiceItem myItem = myMatches.items[i];
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42 Object myProxy = myItem.service;
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43
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44 System.out.println("ServiceId: " + myItem.serviceID);
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45 System.out.println("Type: " + myProxy.getClass());
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46 System.out.print("Interfaces: ");
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47 dumpInterfaces(myProxy);
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48
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49 System.out.println("Total attributes: " +
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50 myItem.attributeSets.length);
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51
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52 dump(myItem.attributeSets);
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53
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54 System.out.println();
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55 }
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56 }
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57
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58 public static ServiceMatches
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59 findServicesOfType(Class aClass,
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60 ServiceRegistrar aRegistrar)
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61 throws RemoteException {
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62
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63 ServiceTemplate myTemplate =
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64 new ServiceTemplate(null, new Class[] {aClass}, null);
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65
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66 ServiceMatches myServices = aRegistrar.lookup(myTemplate, 255);
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67
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68 return myServices;
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69 }
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70
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71 public static void dump(Entry[] aListOfEntries) {
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72 for (int i = 0; i < aListOfEntries.length; i++) {
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73 System.out.println(" " + aListOfEntries[i].getClass().getName());
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74 dump(aListOfEntries[i]);
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75 }
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76 }
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77
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78 public static void dump(Entry anEntry) {
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79 Field[] myFields = anEntry.getClass().getFields();
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80
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81 for (int i = 0; i < myFields.length; i++) {
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82
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83 try {
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84 Object myValue = myFields[i].get(anEntry);
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85
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86 System.out.println(myFields[i].getType().getName() + " " +
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87 myFields[i].getName() + " = " + myValue);
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88 } catch (IllegalAccessException anE) {
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89 System.out.println(myFields[i].getType().getName() + " " +
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90 myFields[i].getName() + " = IllegalAccessException");
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91 }
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92 }
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93 }
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94
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95 public static void dump(ServiceMatches aMatches) {
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96 System.out.println("Found " + aMatches.totalMatches);
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97
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98 for (int i = 0; i < aMatches.totalMatches; i++) {
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99 System.out.println("ServiceID: " +
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100 aMatches.items[i].serviceID + ", " +
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101 aMatches.items[i].service);
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102 System.out.print("Interfaces: ");
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103 dumpInterfaces(aMatches.items[i].service.getClass());
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104 }
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105 }
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106
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107 public static void dump(ServiceItem anItem) {
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108 System.out.println("ServiceID: " +
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109 anItem.serviceID + ", " + anItem.service);
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110 System.out.print("Interfaces: ");
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111 dumpInterfaces(anItem.service.getClass());
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112 }
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113
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114 public static boolean hasInterface(Object anObject, Class anInterface) {
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115
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116 Class myCurrentClass = anObject.getClass();
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117
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118 while (myCurrentClass != null) {
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119 Class[] myInterfaces = myCurrentClass.getInterfaces();
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120
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121 for (int j = 0; j < myInterfaces.length; j++) {
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122 if (myInterfaces[j].equals(anInterface))
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123 return true;
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124 }
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125
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126 myCurrentClass = myCurrentClass.getSuperclass();
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127 }
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128
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129 return false;
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130 }
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131
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132 public static void dumpInterfaces(Object anObject) {
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133 dumpInterfaces(anObject.getClass());
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134 }
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135
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136 public static void dumpInterfaces(Class aClass) {
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137
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138 Class[] myInterfaces = aClass.getInterfaces();
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139
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140 for (int j = 0; j < myInterfaces.length; j++) {
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141 System.out.print(myInterfaces[j].getName() +
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142 "(" + myInterfaces[j].getClassLoader() + ")" + " ");
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143 }
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144
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145 if (aClass.getSuperclass() != null)
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146 dumpInterfaces(aClass.getSuperclass());
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147 else
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148 System.out.println();
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149 }
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150 }