Example usage for com.google.gwt.query.client.plugins.deferred Deferred promise

Introduction

In this page you can find the example usage for com.google.gwt.query.client.plugins.deferred Deferred promise.

Prototype

Promise promise

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Usage

From source file:org.lirazs.gbackbone.client.core.net.LocalStorageSyncStrategy.java

License:Apache License

@Override
public Promise sync(String method, Synchronized syncModel, Options options) {
    JSONValue response = null;/*from  www  . j  a  v a2 s . c om*/
    String errorMessage = null;

    Deferred syncDfd = new Deferred();

    try {
        if (method.equals("read")) {
            if (syncModel instanceof Model) {
                Model model = (Model) syncModel;
                response = find(model.getId()).toJsonValue();

            } else if (syncModel instanceof Collection) {
                response = findAll().toJsonValue();
            }
        } else if (method.equals("create")) {
            response = create((Options) syncModel.toJSON()).toJsonValue();
        } else if (method.equals("update")) {
            response = update((Options) syncModel.toJSON()).toJsonValue();
        } else if (method.equals("delete")) {
            response = destroy((Options) syncModel.toJSON()).toJsonValue();
        }
    } catch (Exception e) {
        errorMessage = e.getMessage();
    }

    if (response != null) {
        syncModel.trigger("sync", syncModel, response, options);

        if (options != null && options.containsKey("success")) {
            Function success = options.get("success");
            success.f(response);
        }
        syncDfd.resolve(response);
    } else {
        errorMessage = errorMessage != null ? errorMessage : "Record Not Found";

        if (options != null && options.containsKey("error")) {
            Function error = options.get("error");
            error.f(errorMessage);
        }
        syncDfd.reject(errorMessage);
    }

    // add compatibility with $.ajax
    // always execute callback for success and error
    if (options != null && options.containsKey("complete")) {
        Function complete = options.get("complete");
        complete.f(response);
    }

    return syncDfd.promise();
}

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