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1
6
7 package com.hp.hpl.jena.graph.impl;
8
9 import java.util.*;
10
11 import com.hp.hpl.jena.graph.*;
12 import com.hp.hpl.jena.mem.TrackingTripleIterator;
13 import com.hp.hpl.jena.util.IteratorCollection;
14 import com.hp.hpl.jena.util.iterator.ExtendedIterator;
15
16
30
31 public class SimpleEventManager implements GraphEventManager
32 {
33 protected Graph graph;
34 protected List listeners;
35
36 SimpleEventManager( Graph graph )
37 {
38 this.graph = graph;
39 this.listeners = new ArrayList();
40 }
41
42 public GraphEventManager register( GraphListener listener )
43 {
44 listeners.add( listener );
45 return this;
46 }
47
48 public GraphEventManager unregister( GraphListener listener )
49 {
50 listeners.remove( listener );
51 return this;
52 }
53
54 public boolean listening()
55 { return listeners.size() > 0; }
56
57 public void notifyAddTriple( Graph g, Triple t )
58 {
59 for (int i = 0; i < listeners.size(); i += 1)
60 ((GraphListener) listeners.get(i)).notifyAddTriple( g, t );
61 }
62
63 public void notifyAddArray( Graph g, Triple [] ts )
64 {
65 for (int i = 0; i < listeners.size(); i += 1)
66 ((GraphListener) listeners.get(i)).notifyAddArray( g, ts );
67 }
68
69 public void notifyAddList( Graph g, List L )
70 {
71 for (int i = 0; i < listeners.size(); i += 1)
72 ((GraphListener) listeners.get(i)).notifyAddList( g, L);
73 }
74
75 public void notifyAddIterator( Graph g, List it )
76 {
77 for (int i = 0; i < listeners.size(); i += 1)
78 ((GraphListener) listeners.get(i)).notifyAddIterator( g, it.iterator() );
79 }
80
81 public void notifyAddIterator( Graph g, Iterator it )
82 { notifyAddIterator( g, IteratorCollection.iteratorToList( it ) ); }
83
84 public void notifyAddGraph( Graph g, Graph added )
85 {
86 for (int i = 0; i < listeners.size(); i += 1)
87 ((GraphListener) listeners.get(i)).notifyAddGraph( g, added );
88 }
89
90 public void notifyDeleteTriple( Graph g, Triple t )
91 {
92 for (int i = 0; i < listeners.size(); i += 1)
93 ((GraphListener) listeners.get(i)).notifyDeleteTriple( g, t );
94 }
95
96 public void notifyDeleteArray( Graph g, Triple [] ts )
97 {
98 for (int i = 0; i < listeners.size(); i += 1)
99 ((GraphListener) listeners.get(i)).notifyDeleteArray( g, ts );
100 }
101
102 public void notifyDeleteList( Graph g, List L )
103 {
104 for (int i = 0; i < listeners.size(); i += 1)
105 ((GraphListener) listeners.get(i)).notifyDeleteList( g, L );
106 }
107
108 public void notifyDeleteIterator( Graph g, List L )
109 {
110 for (int i = 0; i < listeners.size(); i += 1)
111 ((GraphListener) listeners.get(i)).notifyDeleteIterator( g, L.iterator() );
112 }
113
114 public void notifyDeleteIterator( Graph g, Iterator it )
115 { notifyDeleteIterator( g, IteratorCollection.iteratorToList( it ) ); }
116
117 public void notifyDeleteGraph( Graph g, Graph removed )
118 {
119 for (int i = 0; i < listeners.size(); i += 1)
120 ((GraphListener) listeners.get(i)).notifyDeleteGraph( g, removed );
121 }
122
123 public void notifyEvent( Graph source, Object  event )
124 {
125 for (int i = 0; i < listeners.size(); i += 1)
126 ((GraphListener) listeners.get(i)).notifyEvent( source, event ); }
127
128
132 public static ExtendedIterator notifyingRemove( final Graph g, Iterator i )
133 {
134 return new TrackingTripleIterator( i )
135 {
136 protected final GraphEventManager gem = g.getEventManager();
137 public void remove()
138 {
139 super.remove();
140 gem.notifyDeleteTriple( g, current );
141 }
142 };
143 }
144
145 }
146
147 |
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