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Use a predicate template with substitution values during search indexing for performance

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Blake Watters
2012-08-23 11:01:30 -04:00
parent e41da114c8
commit ad63be902d
1 changed files with 5 additions and 3 deletions
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8
Code/Search/RKSearchIndexer.m
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@@ -117,7 +117,11 @@ NSString * const RKSearchableAttributeNamesUserInfoKey = @"RestKitSearchableAttr
searchTokenizer.stopWords = self.stopWords;
__block NSUInteger searchWordCount;
NSFetchRequest *fetchRequest = [NSFetchRequest fetchRequestWithEntityName:RKSearchWordEntityName];
fetchRequest.fetchLimit = 1;
NSPredicate *predicateTemplate = [NSPredicate predicateWithFormat:@"%K == $SEARCH_WORD", RKSearchWordAttributeName];
NSManagedObjectContext *managedObjectContext = managedObject.managedObjectContext;
[managedObjectContext performBlockAndWait:^{
NSMutableSet *searchWords = [NSMutableSet set];
for (NSString *searchableAttribute in searchableAttributes) {
@@ -127,9 +131,7 @@ NSString * const RKSearchableAttributeNamesUserInfoKey = @"RestKitSearchableAttr
NSSet *tokens = [searchTokenizer tokenize:attributeValue];
for (NSString *word in tokens) {
if (word && [word length] > 0) {
NSFetchRequest *fetchRequest = [NSFetchRequest fetchRequestWithEntityName:RKSearchWordEntityName];
fetchRequest.predicate = [NSPredicate predicateWithFormat:@"%K = %@", RKSearchWordAttributeName, word];
fetchRequest.fetchLimit = 1;
fetchRequest.predicate = [predicateTemplate predicateWithSubstitutionVariables:@{ @"SEARCH_WORD" : word }];
NSError *error = nil;
NSArray *results = [managedObject.managedObjectContext executeFetchRequest:fetchRequest error:&error];
if (results) {