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CORelationshipCache.m
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#import "CORelationshipCache.h"
#import <EtoileFoundation/ETUUID.h>
#import <EtoileFoundation/Macros.h>
#import "COType.h"
#import "COItem.h"
@implementation CORelationshipRecord
@synthesize uuid = uuid_;
@synthesize property = property_;
+ (CORelationshipRecord *) recordWithUUID: (ETUUID *)aUUID property: (NSString *)aProp
{
CORelationshipRecord *result = [[[self alloc] init] autorelease];
result.uuid = aUUID;
result.property = aProp;
return result;
}
- (void) dealloc
{
[uuid_ release];
[property_ release];
[super dealloc];
}
- (NSUInteger)hash
{
// TODO: Benchmark, access UUID bytes directly via a pointer?
return *(NSUInteger *)([uuid_ UUIDValue]);
}
- (BOOL)isEqual:(id)object
{
// TODO: Benchmark, access UUID bytes directly via a pointer?
CORelationshipRecord *other = object;
return [property_ isEqualToString: other->property_]
&& (0 == memcmp([uuid_ UUIDValue], [other->uuid_ UUIDValue], 16));
}
@end
@implementation CORelationshipCache
#define INITIAL_DICTIONARY_CAPACITY 256
#define INITIAL_SET_CAPACITY 8
- (id) init
{
SUPERINIT;
referrerUUIDsForUUID_ = [[NSMutableDictionary alloc] initWithCapacity: INITIAL_DICTIONARY_CAPACITY];
embeddedObjectParentUUIDForUUID_ = [[NSMutableDictionary alloc] initWithCapacity: INITIAL_DICTIONARY_CAPACITY];
tempRecord_ = [[CORelationshipRecord alloc] init];
return self;
}
- (void) dealloc
{
[referrerUUIDsForUUID_ release];
[embeddedObjectParentUUIDForUUID_ release];
[tempRecord_ release];
[super dealloc];
}
- (CORelationshipRecord *) parentForUUID: (ETUUID *)anObject
{
return [embeddedObjectParentUUIDForUUID_ objectForKey: anObject];
}
- (void) setParentUUID: (ETUUID *)aParent
forUUID: (ETUUID*)anObject
forProperty: (NSString *)aProperty
{
CORelationshipRecord *record = [[CORelationshipRecord alloc] init];
record.uuid = aParent;
record.property = aProperty;
[embeddedObjectParentUUIDForUUID_ setObject: record forKey: anObject];
[record release];
}
- (void) clearParentForUUID: (ETUUID*)anObject
{
[embeddedObjectParentUUIDForUUID_ removeObjectForKey: anObject];
}
- (void) addReferrerUUID: (ETUUID *)aReferrer
forUUID: (ETUUID*)anObject
forProperty: (NSString *)aProperty
{
NSMutableSet *set = [referrerUUIDsForUUID_ objectForKey: anObject];
if (set == nil)
{
set = [[NSMutableSet alloc] initWithCapacity: INITIAL_SET_CAPACITY];
[referrerUUIDsForUUID_ setObject: set forKey: anObject];
[set release];
}
CORelationshipRecord *record = [[CORelationshipRecord alloc] init];
record.uuid = aReferrer;
record.property = aProperty;
[set addObject: record];
[record release];
}
- (void) removeReferrerUUID: (ETUUID *)aReferrer
forUUID: (ETUUID*)anObject
forProperty: (NSString *)aProperty
{
tempRecord_.uuid = aReferrer;
tempRecord_.property = aProperty;
[(NSMutableSet *)[referrerUUIDsForUUID_ objectForKey: anObject] removeObject: tempRecord_];
}
- (NSSet *) referrersForUUID: (ETUUID *)anObject
{
return [referrerUUIDsForUUID_ objectForKey: anObject];
}
- (NSSet *) referrersForUUID: (ETUUID *)anObject
propertyInParent: (NSString*)propInParent
{
NSMutableSet *results = [NSMutableSet set];
NSSet *all = [referrerUUIDsForUUID_ objectForKey: anObject];
for (CORelationshipRecord *record in all)
{
if ([record.property isEqualToString: propInParent])
{
[results addObject: record.uuid];
}
}
return results;
}
- (void) clearOldValue: (id)oldVal
oldType: (COType)oldType
forProperty: (NSString *)aProperty
ofObject: (ETUUID *)anObject
{
if (oldVal != nil)
{
if (COPrimitiveType(oldType) == kCOCompositeReferenceType)
{
if (COTypeIsMultivalued(oldType))
{
for (id obj in oldVal)
{
[self clearParentForUUID: obj];
}
}
else
{
[self clearParentForUUID: oldVal];
}
}
else if (COPrimitiveType(oldType) == kCOReferenceType)
{
if (COTypeIsMultivalued(oldType))
{
for (id obj in oldVal)
{
[self removeReferrerUUID: anObject forUUID: obj forProperty: aProperty];
}
}
else
{
[self removeReferrerUUID: anObject forUUID: oldVal forProperty: aProperty];
}
}
}
}
- (void) setNewValue: (id)newVal
newType: (COType)newType
forProperty: (NSString *)aProperty
ofObject: (ETUUID *)anObject
{
if (newVal != nil)
{
if (COPrimitiveType(newType) == kCOCompositeReferenceType)
{
if (COTypeIsMultivalued(newType))
{
for (id obj in newVal)
{
[self setParentUUID: anObject forUUID: obj forProperty: aProperty];
}
}
else
{
[self setParentUUID: anObject forUUID: newVal forProperty: aProperty];
}
}
else if (COPrimitiveType(newType) == kCOReferenceType)
{
if (COTypeIsMultivalued(newType))
{
for (id obj in newVal)
{
[self addReferrerUUID: anObject forUUID: obj forProperty: aProperty];
}
}
else
{
[self addReferrerUUID: anObject forUUID: newVal forProperty: aProperty];
}
}
}
}
- (void) updateRelationshipCacheWithOldValue: (id)oldVal
oldType: (COType)oldType
newValue: (id)newVal
newType: (COType)newType
forProperty: (NSString *)aProperty
ofObject: (ETUUID *)anObject
{
[self clearOldValue: oldVal
oldType: oldType
forProperty: aProperty
ofObject: anObject];
[self setNewValue: newVal
newType: newType
forProperty: aProperty
ofObject: anObject];
}
- (void) addItem: (COItem *)anItem
{
ETUUID *uuid = [anItem UUID];
for (NSString *key in [anItem attributeNames])
{
[self setNewValue: [anItem valueForAttribute: key]
newType: [anItem typeForAttribute: key]
forProperty: key
ofObject: uuid];
}
}
- (void) removeItem: (COItem *)anItem
{
ETUUID *uuid = [anItem UUID];
for (NSString *key in [anItem attributeNames])
{
[self clearOldValue: [anItem valueForAttribute: key]
oldType: [anItem typeForAttribute: key]
forProperty: key
ofObject: uuid];
}
// N.B. We don't unset the parent of anItem.
// That data is conceptually owned by the parent, and will be unset when/if the parent is removed
}
- (void) removeAllEntries
{
[embeddedObjectParentUUIDForUUID_ removeAllObjects];
[referrerUUIDsForUUID_ removeAllObjects];
}
@end