20032334/operationpromise

NSOperation(NSOperationQueue) dependency manager library.

OperationPromise

NSOperation(NSOperationQueue) dependency manager library.

Installation

pod 'OperationPromise', :git =>'https://github.com/azu/OperationPromise.git'

Usage

OperationPromise has then and when method.

It possible to chain methods.

Example of then

NSMutableArray *race = [NSMutableArray array];
NSBlockOperation *blockOperation1 = [NSBlockOperation blockOperationWithBlock:^{
    [race addObject:@1];
}];
NSBlockOperation *blockOperation2 = [NSBlockOperation blockOperationWithBlock:^{
    [race addObject:@2];
}];
NSBlockOperation *blockOperation3 = [NSBlockOperation blockOperationWithBlock:^{
    [race addObject:@3];
}];
NSOperationQueue *queue = [[NSOperationQueue alloc] init];

[OperationPromise promise:queue]
    .then(blockOperation1)
    .then(blockOperation2)
    .then(blockOperation3)
    .start();
[queue waitUntilAllOperationsAreFinished];// sync wait....
NSArray *expect = @[@1, @2, @3];
XCTAssertEqualObjects(race, expect);
// Call @1 -> @2 -> @3

Example of when

NSMutableArray *race = [NSMutableArray array];
NSBlockOperation *blockOperation1 = [NSBlockOperation blockOperationWithBlock:^{
    [race addObject:@1];
}];
NSBlockOperation *blockOperation2 = [NSBlockOperation blockOperationWithBlock:^{
    [race addObject:@2];
}];
NSBlockOperation *blockOperation3 = [NSBlockOperation blockOperationWithBlock:^{
    [race addObject:@3];
}];
NSBlockOperation *blockOperation4 = [NSBlockOperation blockOperationWithBlock:^{
    [race addObject:@4];
}];
NSOperationQueue *queue = [[NSOperationQueue alloc] init];

[OperationPromise promise:queue]
    .then(blockOperation1)
    .when(@[blockOperation2, blockOperation3])
    .then(blockOperation4)
    .start();
[queue waitUntilAllOperationsAreFinished];// wait perform all operation...

NSArray *expect = @[@1, @2, @3, @4];
XCTAssertEqualObjects(race[0], expect[0]);
XCTAssertEqualObjects(race[3], expect[3]);
// call @1 -> (@2 or @3) -> @4

Contributing

1. Fork it!
2. Create your feature branch: git checkout -b my-new-feature
3. Commit your changes: git commit -am 'Add some feature'
4. Push to the branch: git push origin my-new-feature
5. Submit a pull request :D

License

MIT