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December 17, 2015 11:09
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Example of Riak data support based on Reactor.
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// Set a UriTemplateSelector to respond to any events happening on data in the 'test' bucket | |
riak.on(U("/test/{key}"), (Event ev) -> { | |
String key = ev.getHeaders().get("key"); | |
boolean isStore = StoreEvent.class.isInstance(ev); | |
// Only count down on store | |
if (isStore) { | |
latch.countDown(); | |
} | |
}); | |
// Get a Bucket and access it using a callback | |
riak.fetchBucket("test").onSuccess( | |
bucket -> { | |
// Create a regular RiakOperation<T> but execute it in the Dispatcher | |
StoreObject<String> storeOp = bucket.store("test", "Hello World!"); | |
riak.send(storeOp); | |
} | |
); | |
// Get the value of a key as a String in an async Promise | |
Promise<String> pStr = riak.fetch(b, "test", String.class); | |
// Block the calling thread for 30 seconds to get the delayed result | |
String s = pStr.await(30, TimeUnit.SECONDS); | |
// Use Composable.map | |
Composable<String> cStr = riak.fetchBucket("test").map( | |
bucket -> { | |
return bucket.getName(); | |
} | |
); | |
// Send bulk operations to the server | |
DeleteObject[] deleteOps = new DeleteObject[objCount]; | |
for (int i = 0; i < objCount; i++) { | |
deleteOps[i] = test.delete("test" + i); | |
} | |
riak.send(deleteOps).onSuccess(v -> latch.countDown()); |
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