Inserting duplicate value in indexeddb - angularjs

Question

When i insert on my database , it inserting same data twice.
Table Create
var oOptions = {
keyPath: account.primaryKey,
autoIncrement: true
};
var oStore = dbHandle.createObjectStore(account.tableName, oOptions);
var oIxOptions = {
unique: false
};
account.fields.forEach(function(item) {
oStore.createIndex(item + "Index", item, oIxOptions);
});
Insert
var defered = $q.defer();
try {
var objectStore = config.database.transaction(tableName, "readwrite").objectStore(tableName);
var result = objectStore.add(entity);
result.onerror = function(e) {
defered.reject("Can't insert into account");
throw e;
}
result.onsuccess = function(e) {
defered.resolve();
}
} catch (e) {
defered.reject("Can't insert into account");
throw e;
}
return defered.promise;
Retrive
var defered = $q.defer();
try {
var req = $window.indexedDB.open(config.databaseName, 1.0);
req.onsuccess = function(evt) {
config.database = evt.target.result;
var transaction = config.database.transaction(account.tableName, IDBTransaction.READ_ONLY);
var objectStore = transaction.objectStore(account.tableName);
var tmpData = [];
objectStore.openCursor().onsuccess = function(event) {
var cursor = event.target.result;
if (!cursor) {
defered.resolve(tmpData);
return;
}
tmpData.push(cursor.value);
cursor.continue();
};
}
} catch (e) {
defered.reject("Can't pull from account");
throw e;
}
return defered.promise;
Any suggestion ??

Answer 1

This might be less of a problem with indexedDB and more a problem with your use of try/catch and promises. Have you tested without try/catch and without promises? What is your rationale for using promises here? Consider that you don't need try/catch and you don't need promises to perform these simple tasks.