Sync Configuration Policies

The Sync Configuration Policies feature allows you to control the data synchronizing between the device and the server. For example, objects with read-only data are not required to upload during a sync session.

Sync is a bi-directional operation. It uploads the local changes to the server and downloads the server changes, by default. You should provide the syncType option (downloadOnly , uploadOnly, or fullSync) to control the sync behavior on an object or object-service sync session.

There are three syncType options. They are as follows.

• downloadOnly: changes from the server are downloaded to the device.
• uploadOnly: local changes from the device are uploaded to the server.
• fullSync performs bi-directional sync between the local device and the server.

Sample Code

function onSyncSuccess(successObject) {
    //Operation to be performed on successful sync.
 }

 function onSyncFailure(error) {
    //Operation to be performed on unsuccessful sync.
 }
 function onSyncProgress(progressObject) {
   //Update Progressbar.
}try {
    //Create an offline object which needs to be synced.
    var syncObject = = new voltmx.sdk.VMXObj("Employee");

    //Set syncType to perform a sync session.
    var syncOptions = {"syncType" : "uploadOnly"};

    //Supplying callback to receive sync progress event too.
    syncObject.startSync(syncOptions, onSyncSuccess, onSyncFailure, onSyncProgress);
} catch (error) {
    alert("Object creation failed!);
}