NyaruDB

@starfruits_j (Little Gleam)

 Azione

Azione Web

Swift?!

Nator

© 2014 Azione Co.,Ltd. All Right Reserved.

DB ( )SQL

DB

DB

typo

[NSString stringWithFormat:]

INDEX

SQLite(FMDB)

3GS

FMDatabaseQueue

REINDEX

ALTER TABLE mails ADD COLUMN answered INTEGER DEFAULT ....

...

SparrowOpenSource

OSS !=

TokyoCabinet

NoSQL - SQL

..

API ( )

NoJSON, NoARC NoIB

main.m

int main(int argc, char *argv[])

{

@autoreleasepool {

if ([AppSettings isOS8OrGreater]) {

return UIApplicationMain(argc, argv, nil, NSStringFromClass([MB2AppDelegate class]));

}

return UIApplicationMain(argc, argv, nil, NSStringFromClass([ScreenFactory class]));

}

}

DB SQL

github

NyaruDBhttps://github.com/kelp404/NyaruDB

( )SAN ( )

W

2013 4 7 1:05

MIT License

NyaruDB is a simple NoSQL database in

Objective-C. It could be run on iOS and OS X.

It is a key-valu pair NoSQL database. You could

search data by fields of the document.

DB

SQL

NyaruDB SQL

CocoaPods

SQL

_documentFilePath

_indexFilePath

NSFileHandle seek

Table keyselect

(asyncFetch)AsyncDisplayKit

10

SQLKeyValueStore

NSDictionary NSDictionary

- (NSString *)name { return _dic[@"name"];}

- (void)setName:(NSString *)name { _dic[@"name"] = name;}

JSON OK

NyaruCollection *col = [[NyaruDB instance] collection:@"articles"];[col createIndex:@"user_id"];[col put:@{ @"user_id" : @1 @"name" : @"Cocoa", @"age" : @"test",}];

instance singletoncollection close instance

JSON

- (instansetype)initWithDictionary:(NSDictionary *)dictionary { if ((self = [super init])) { _dic = dictionary; } return self;}

- (void)save { [self.col put:_dic];}

"key" primarykeykey update

SELECTNSArray *results = [[col all] fetch];

WHERENSDictionary *result = [[col where:@"user_id" equal:identifier] fetchFirst];

ANDwhere: => NyaruQuery

[[self.col where:@"user_id" less:100] and:@"user_id" greater:10]];

NyaruQuery- (NyaruQuery *)and:(NSString *)indexName equal:(id)value;- (NyaruQuery *)and:(NSString *)indexName notEqual:(id)value;- (NyaruQuery *)and:(NSString *)indexName less:(id)value;- (NyaruQuery *)and:(NSString *)indexName lessEqual:(id)value;- (NyaruQuery *)and:(NSString *)indexName greater:(id)value;- (NyaruQuery *)and:(NSString *)indexName greaterEqual:(id)value;- (NyaruQuery *)and:(NSString *)indexName like:(NSString *)value;

- (NyaruQuery *)or:(NSString *)indexName equal:(id)value;- (NyaruQuery *)orderBy:(NSString *)indexName;- (NyaruQuery *)orderByDESC:(NSString *)indexName;

 : JSON

NSNull nil

limit length of field name is 255limit of documents is 4,294,967,295

limit of document file size is 4Gkey is unique and it is NSStringkey only provides equal search

key is case sensitiveindex is case insensitive

a field of the document should be same data typewhich is index

sort query allow only one

http://realm.io/

Realm is a mobile database: a replacement forSQLite & Core Data Realm can save you

thousands of lines of code & weeks of work, andlets you craft amazing new user experiences.

CocoaPods

SQL

RLMObject

Table Class

@interface User : RLMObject

@property (nonatomic, copy) NSString *identifier;

@property (nonatomic, copy) NSString *name;

@end

SQL

@interface User : RLMObject

@property (nonatomic, copy) NSString *identifier;

@property (nonatomic, copy) NSString *name;

@end

+ (NSString *)primaryKey {

return @"identifier";

}

INSERT[[RLMRealm defaultRealm] transactionWithBlock:^{

[[RLMRealm defaultRealm] addObject:user];

[[RLMRealm defaultRealm] addOrUpdateObject:user];

}];

SELECTRLMResults *users = [User allObjects];

RLMResultsNSArray (for in )

@interface RLMResults : NSObject<RLMCollection, NSFastEnumeration>

...

- (id)objectAtIndex:(NSUInteger)index;

- (id)firstObject;

- (id)lastObject;

...

@end

WHEREUser *user = [[User objectsWhere:@"identifier = %@", identifier] firstObject];

NSPredicate NSPredicate

ANDobjectsWhere: => RLMResults

[[User objectsWhere:@"age < %@", @(20)] objectsWhere:@"age > %@", @(2)]];

RLMResults@interface Picture : RLMObject

@property (nonatomic, assign) BOOL isDeleted;

...

+ (RLMResults *)pictures {

return [self objectsWhere:@"isDeleted = 0"];

}

+ (RLMResults *)deletedPictures {

return [self objectsWhere:@"isDeleted = 1"];

}

+ (RLMResults *)myPictures {

RLMResults *res = [self pictures];

res = [res objectsWhere:@"user_id", [Account identifier]];

res = [res sortedResultsUsingProperty:@"created" ascending:NO];

return res;

}

delete[[RLMRealm defaultRealm] transactionWithBlock:^{

[[RLMRealm defaultRealm] deleteObjects:[Picture myPictures]];

}];

...

Migration [RLMRealm setSchemaVersion:9

withMigrationBlock:^(RLMMigration *migration, NSUInteger oldSchemaVersion) {

if (oldSchemaVersion < 8) {

[migration enumerateObjects:NSStringFromClass([Pictures class])

block:^(RLMObject *oldObject, RLMObject *newObject) {

newObject[@"updated"] = oldObject[@"created"];

}];

}

}];

schemaVersion

[RLMRealm defaultRealm]DBDB

notification_token = [[RLMRealm defaultRealm] addNotificationBlock:^(NSString *notification, RLMRealm *realm) { // code}];

NSMapTable token

AppDelegate migrationViewController initWithCoder:NSURLJava

getter

https://github.com/jstarfruits/BenchDB

normal single main (10,000)FMDB 00.24 49.194 00.617NyaruDB 29.02 17.890 59.186Realm 04.18 28.744 00.385

SQLite

Realm NyaruDB SQL

NyaruDB - Realm - FMDB -

Realm

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