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View Code? Open in Web Editor NEWCMS for Java applications; high level utility classes for managing data (collections)
CMS for Java applications; high level utility classes for managing data (collections)
Find an elegant solution to optimize the following async "fallback" scenario;
Use case; perform async operation with specific input and if it fails, try again with another input (for example, when trying to load a thumbnail file, and falling back to generating thumbnails from full-size image yourself). Regardless of which of the two methods succeeds, after an image is loaded some operations have to be performce:
performAsyncOperation(inputA)
.onSuccess(() -> {
postSuccessOp1();
postSuccessOp2();
postSuccessOp3();
})
.onFailure(() -> {
performAsyncOperation(inputB)
.onSuccess(() -> {
postSuccessOp1();
postSuccessOp2();
postSuccessOp3();
})
.onFailure(() -> showErrorMessage());
});
A possible solution could look something like this;
performAsyncOperation(inputA)
.fallback(() -> performAsyncOperation(inputB))
.onSuccess(() -> {
postSuccessOp1();
postSuccessOp2();
postSuccessOp3();
})
.onFailure(() -> showErrorMessage());
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