wamblee.org Git - utils/blob - system/general/src/main/java/org/wamblee/system/DefaultProvidedInterfaceDescriptor.java

   1 package org.wamblee.system;
   2
   3 import java.util.Arrays;
   4
   5 /**
   6  * Default implementation of a service descriptor.
   7  *
   8  * @author Erik Brakkee
   9  */
  10 public class DefaultProvidedInterfaceDescriptor implements ProvidedInterface {
  11
  12         private String _name;
  13         private Class[] _interfaces;
  14         private Object _implementation;
  15
  16         /**
  17          * Constructs the descriptor.
  18          * @param aInterface Type of service.
  19          */
  20         public DefaultProvidedInterfaceDescriptor(String aName, Class aInterface) {
  21                 _name = aName;
  22                 _interfaces = new Class[] { aInterface };
  23         }
  24
  25         public DefaultProvidedInterfaceDescriptor(String aName, Class[] aInterfaces) {
  26                 _name = aName;
  27                 _interfaces = Arrays.copyOf(aInterfaces, aInterfaces.length);
  28         }
  29
  30         @Override
  31         public String getName() {
  32                 return _name;
  33         }
  34
  35         @Override
  36         public Class[] getInterfaceTypes() {
  37                 return _interfaces;
  38         }
  39
  40         @Override
  41         public void publish(Object aImplementation) {
  42                 _implementation = aImplementation;
  43         }
  44
  45         @Override
  46         public Object getImplementation() {
  47                 return _implementation;
  48         }
  49
  50         @Override
  51         public boolean equals(Object obj) {
  52                 if ( !(obj instanceof DefaultProvidedInterfaceDescriptor)) {
  53                         return false;
  54                 }
  55                 DefaultProvidedInterfaceDescriptor descr = (DefaultProvidedInterfaceDescriptor)obj;
  56                 if ( _interfaces.length != descr._interfaces.length ) {
  57                         return false;
  58                 }
  59                 String[] interfaces1 = new String[_interfaces.length];
  60                 String[] interfaces2 = new String[_interfaces.length];
  61                 for (int i = 0; i < _interfaces.length; i++) {
  62                         interfaces1[i] = _interfaces[i].getName();
  63                         interfaces2[i] = descr._interfaces[i].getName();
  64                 }
  65                 Arrays.sort(interfaces1);
  66                 Arrays.sort(interfaces2);
  67                 return Arrays.equals(interfaces1, interfaces2);
  68         }
  69
  70         @Override
  71         public int hashCode() {
  72                 return _interfaces.hashCode();
  73         }
  74
  75         @Override
  76         public String toString() {
  77                 StringBuffer buf = new StringBuffer();
  78                 for (Class intf: _interfaces) {
  79                         buf.append("." + intf.getName());
  80                 }
  81                 return buf.toString();
  82         }
  83 }