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899c64641d
* EOControl/EOGlobalID.m: Update includes. (sequence): Define plattform independently. (sequenceRev): Remove. ([EOGlobalID isEqual:]): Fix declaration. ([EOTemporaryGlobalID init]): Ditto. ([EOTemporaryGlobalID isEqual:]): Ditto. Remove access instance variable directly instead of relying on superflous accessor method. ([EOTemporaryGlobalID assignGloballyUniqueBytes]): Rewrite and document. ([EOTemporaryGlobalID _bytes]): Remove. ([EOTemporaryGlobalID encodeWithCoder:]): Encode contents of bytes instead of pointer value. ([EOTemporaryGlobalID decodeWithCoder:]): Decode contents of bytes instead of pointer value. git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gdl2/trunk@19144 72102866-910b-0410-8b05-ffd578937521
81 lines
2.3 KiB
Objective-C
81 lines
2.3 KiB
Objective-C
/* -*-objc-*-
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EOGlobalID.h
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Copyright (C) 2000 Free Software Foundation, Inc.
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Author: Mirko Viviani <mirko.viviani@rccr.cremona.it>
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Date: February 2000
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This file is part of the GNUstep Database Library.
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; see the file COPYING.LIB.
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If not, write to the Free Software Foundation,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef __EOGlobalID_h__
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#define __EOGlobalID_h__
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#ifdef GNUSTEP
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#include <Foundation/NSObject.h>
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#else
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#include <Foundation/Foundation.h>
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#endif
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#include <EOControl/EODefines.h>
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/**
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* This notification is intended to allow EOTemporaryGlobalIDs
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* to be replaced with the corresponding EOKeyGlobalIDs. In theory
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* one could interpret this as a mechanism to allow primary key
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* attributes to be mutable class properties. Even though EOF also posts
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* this notification in that case, it fails to consistently propagate
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* the new value through relationships. GDL2 may attempt to correct
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* that shortcoming in the future, but it may have serious performance
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* implications.
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*/
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GDL2CONTROL_EXPORT NSString *EOGlobalIDChangedNotification;
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@interface EOGlobalID : NSObject <NSCopying>
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- (BOOL)isEqual: (id)other;
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- (unsigned)hash;
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- (BOOL)isTemporary;
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@end
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enum {
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EOUniqueBinaryKeyLength = 12
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};
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@interface EOTemporaryGlobalID : EOGlobalID <NSCoding>
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{
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unsigned _refCount;
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unsigned char _bytes[EOUniqueBinaryKeyLength];
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}
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+ (EOTemporaryGlobalID *)temporaryGlobalID;
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+ (void)assignGloballyUniqueBytes: (unsigned char *)buffer;
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/* Sequence (2) - ProcessID (2) - Time (4) - IP (4) */
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- (BOOL)isTemporary;
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- (void)encodeWithCoder: (NSCoder *)coder;
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- (id)initWithCoder: (NSCoder *)decoder;
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@end
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#endif
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