2 // System.Data.ObjectSpaces.ObjectContext.cs : Handles identity and state for persistent objects.
5 // Mark Easton (mark.easton@blinksoftware.co.uk)
6 // Tim Coleman (tim@timcoleman.com)
8 // (C) BLiNK Software Ltd. http://www.blinksoftware.co.uk
9 // Copyright (C) Tim Coleman, 2003
13 // Permission is hereby granted, free of charge, to any person obtaining
14 // a copy of this software and associated documentation files (the
15 // "Software"), to deal in the Software without restriction, including
16 // without limitation the rights to use, copy, modify, merge, publish,
17 // distribute, sublicense, and/or sell copies of the Software, and to
18 // permit persons to whom the Software is furnished to do so, subject to
19 // the following conditions:
21 // The above copyright notice and this permission notice shall be
22 // included in all copies or substantial portions of the Software.
24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
35 namespace System
.Data
.ObjectSpaces
37 public abstract class ObjectContext
40 protected ObjectContext ()
44 public virtual void Add (object obj
)
46 Add (obj
, (ObjectState
) (-1));
50 public virtual void Add (object obj
, ObjectState state
)
54 public abstract void Delete (object obj
);
55 public abstract ValueRecord
GetCurrentValueRecord (object obj
);
57 public static ObjectContext
GetInternalContext (ObjectSpace objectSpace
)
59 return objectSpace
.ObjectContext
;
62 public static ObjectContext
GetInternalContext (ObjectSet objectSet
)
64 return objectSet
.ObjectContext
;
67 public abstract ObjectState
GetObjectState (object obj
);
68 public abstract ValueRecord
GetOriginalValueRecord (object obj
);
69 public abstract void Import (ObjectContext context
);
70 public abstract void Import (ObjectContext context
, object obj
);
71 public abstract void Remove (object obj
);