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1
56 package org.objectstyle.cayenne.service;
57
58 import org.objectstyle.cayenne.CayenneRuntimeException;
59 import org.objectstyle.cayenne.ObjectId;
60 import org.objectstyle.cayenne.distribution.GlobalID;
61 import org.objectstyle.cayenne.graph.CompoundDiff;
62 import org.objectstyle.cayenne.graph.GraphChangeHandler;
63 import org.objectstyle.cayenne.graph.GraphDiff;
64 import org.objectstyle.cayenne.graph.NodeIdChangeOperation;
65 import org.objectstyle.cayenne.map.EntityResolver;
66
67
74 class ServerToClientDiffConverter implements GraphChangeHandler {
77
78 EntityResolver resolver;
79 CompoundDiff clientDiff;
80
81 ServerToClientDiffConverter(EntityResolver resolver) {
82 this.resolver = resolver;
83 this.clientDiff = new CompoundDiff();
84 }
85
86 GraphDiff getClientDiff() {
87 return clientDiff;
88 }
89
90 public void nodeIdChanged(Object  nodeId, Object newId) {
91 GlobalID nodeGlobalID = toGlobalID(nodeId);
92 GlobalID newGlobalID = toGlobalID(newId);
93 clientDiff.add(new NodeIdChangeOperation(nodeGlobalID, newGlobalID));
94 }
95
96 public void nodeCreated(Object nodeId) {
97 throw new CayenneRuntimeException("Unimplemented...");
98 }
99
100 public void nodeRemoved(Object nodeId) {
101 throw new CayenneRuntimeException("Unimplemented...");
102 }
103
104 public void nodePropertyChanged(
105 Object nodeId,
106 String property,
107 Object oldValue,
108 Object newValue) {
109 throw new CayenneRuntimeException("Unimplemented...");
110 }
111
112 public void arcCreated(Object nodeId, Object targetNodeId, Object arcId) {
113 throw new CayenneRuntimeException("Unimplemented...");
114 }
115
116 public void arcDeleted(Object nodeId, Object targetNodeId, Object arcId) {
117 throw new CayenneRuntimeException("Unimplemented...");
118 }
119
120 GlobalID toGlobalID(Object nodeId) {
121 if (nodeId instanceof ObjectId) {
122 return resolver.convertToGlobalID((ObjectId) nodeId);
123 }
124 else if (nodeId instanceof GlobalID) {
125 return (GlobalID) nodeId;
126 }
127 else if (nodeId == null) {
128 throw new NullPointerException ("Null ObjectId");
129 }
130 else {
131 throw new CayenneRuntimeException(
132 "Server object identifier is expected to be ObjectId, got: " + nodeId);
133 }
134 }
135 }
136 |
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