//
//  MCPAttribute.h
//  MCPModeler
//
//  Created by Serge Cohen (serge.cohen@m4x.org) on 09/08/04.
//  Copyright 2004 Serge Cohen. All rights reserved.
//
//  This code is free software; you can redistribute it and/or modify it under
//  the terms of the GNU General Public License as published by the Free
//  Software Foundation; either version 2 of the License, or any later version.
//
//  This code is distributed in the hope that it will be useful, but WITHOUT ANY
//  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
//  FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
//  details.
//
//  For a copy of the GNU General Public License, visit <http://www.gnu.org/> or
//  write to the Free Software Foundation, Inc., 59 Temple Place--Suite 330,
//  Boston, MA 02111-1307, USA.
//
//  More info at <http://mysql-cocoa.sourceforge.net/>
//


#import <Foundation/Foundation.h>

@class MCPModel;
@class MCPClassDescription;
@class MCPRelation;
@class MCPJoin;


@interface MCPAttribute : NSObject < NSCoding > {
@protected
	MCPClassDescription	*classDescription;          // ClassDescription of which the attribute is attribute
	NSString				*name;            // Name of the attribute (Obj-C side)
	Class					valueClass;       // Class used by the attribute (or NULL if the internal type is not an object)
	NSString				*internalType;    // Name of the class, or type used for the class definition
	NSString				*externalName;    // Name of the corresponding column in the DB
	NSString				*externalType;    // Type used to store the attribute (in the DB)
	unsigned int		width;            // Width (for storing by the DB)
	BOOL					allowsNull;       // Attribute can be null
	BOOL					autoGenerated;    // Attribute is auto generated by the DB
	BOOL					isPartOfKey;      // Attribute is part of theprimary key of the class description
	BOOL					isPartOfIdentity; // Attribute is part of the idclass description of the class description
	BOOL					hasAccessor;      // Does this attribute have an accessor
	id						defaultValue;     // Default value of the attribute
	NSMutableArray		*joins;				// An array of the joins using this attribute
//	NSMutableArray    *relations; // An array of the relations (MCPRelation) that use this attribue as join
}

#pragma mark Class methods
+ (void) initialize;

#pragma mark Life cycle
- (id) initForClassDescription:(MCPClassDescription *) iClassDescription withName:(NSString *) iName;
- (void) dealloc;

#pragma mark NSCoding protocol
- (id) initWithCoder:(NSCoder *) decoder;
- (void) encodeWithCoder:(NSCoder *) encoder;

#pragma mark Setters
- (void) setName:(NSString *) iName;
- (void) setValueClass:(Class) iValueClass;
- (void) setInternalType:(NSString *) iInternalType;
- (void) setExternalType:(NSString *) iExternalType;
- (void) setExternalName:(NSString *) iExternalName;
- (void) setWidth:(unsigned int) iWidth;
- (void) setAllowsNull:(BOOL) iAllowsNull;
- (void) setAutoGenerated:(BOOL) iAutoGenerated;
- (void) setIsPartOfKey:(BOOL) iIsPartOfKey;
- (void) setIsPartOfIdentity:(BOOL) iIsPartOfIdentity;
- (void) setHasAccessor:(BOOL) iHasAccessor;
- (void) setDefaultValue:(id) iDefaultValue;
- (void) insertObject:(MCPJoin *) iJoin inJoinsAtIndex:(unsigned int) index;
- (void) removeObjectFromJoinsAtIndex:(unsigned int) index;
//- (void) addRelation:(MCPRelation *) iRelation;
//- (void) removeRelation:(MCPRelation *) iRelation;

#pragma mark Getters
- (MCPClassDescription *) classDescription;
- (NSString *) name;
- (Class) valueClass;
- (NSString *) valueClassName;
- (NSString *) internalType;
- (NSString *) externalName;
- (NSString *) externalType;
- (unsigned int) width;
- (BOOL) allowsNull;
- (BOOL) autoGenerated;
- (BOOL) isPartOfKey;
- (BOOL) isPartOfIdentity;
- (BOOL) hasAccessor;
- (id) defaultValue;
- (unsigned int) countOfJoins;
- (MCPJoin *) objectInJoinsAtIndex:(unsigned int) index;
- (unsigned int) indexOfJoinIdenticalTo:(id) iJoin;

#pragma mark Some general methods:
- (BOOL) isEqual:(id) iObject;


@end