operationpromise's Introduction

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

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

License

MIT

operationpromise's People

Contributors

Stargazers

Watchers

operationpromise's Issues

NSOperationQueue Pause and Resume?

I want to create NSOperationQueue with max size 25.
And operation added to queue after checking queue is full or not.
How to check whether queue is full or not?
How to pause operation to add in the queue till queue gets empty?

Recommend Projects