ionic-framework
Version:
An advanced HTML5 mobile app framework built on Angular2
70 lines (69 loc) • 2.92 kB
TypeScript
import { StorageEngine } from './storage';
/**
* SqlStorage uses SQLite or WebSQL (development only!) to store data in a
* persistent SQL store on the filesystem.
*
* This is the preferred storage engine, as data will be stored in appropriate
* app storage, unlike Local Storage which is treated differently by the OS.
*
* For convenience, the engine supports key/value storage for simple get/set and blob
* storage. The full SQL engine is exposed underneath through the `query` method.
*
* @usage
```js
* let storage = new Storage(SqlStorage, options);
* storage.set('name', 'Max');
* storage.get('name').then((name) => {
* });
*
* // Sql storage also exposes the full engine underneath
* storage.query('insert into projects(name, data) values("Cool Project", "blah")');
* storage.query('select * from projects').then((resp) => {})
* ```
*
* The `SqlStorage` service supports these options:
* {
* name: the name of the database (__ionicstorage by default)
* backupFlag: // where to store the file, default is BACKUP_LOCAL which DOES NOT store to iCloud. Other options: BACKUP_LIBRARY, BACKUP_DOCUMENTS
* existingDatabase: whether to load this as an existing database (default is false)
* }
*
*/
export declare class SqlStorage extends StorageEngine {
static BACKUP_LOCAL: number;
static BACKUP_LIBRARY: number;
static BACKUP_DOCUMENTS: number;
private _db;
constructor(options?: {});
_getBackupLocation(dbFlag: number): number;
_tryInit(): void;
/**
* Perform an arbitrary SQL operation on the database. Use this method
* to have full control over the underlying database through SQL operations
* like SELECT, INSERT, and UPDATE.
*
* @param {string} query the query to run
* @param {array} params the additional params to use for query placeholders
* @return {Promise} that resolves or rejects with an object of the form { tx: Transaction, res: Result (or err)}
*/
query(query: any, params?: any[]): Promise<any>;
/**
* Get the value in the database identified by the given key.
* @param {string} key the key
* @return {Promise} that resolves or rejects with an object of the form { tx: Transaction, res: Result (or err)}
*/
get(key: string): Promise<any>;
/**
* Set the value in the database for the given key. Existing values will be overwritten.
* @param {string} key the key
* @param {string} value The value (as a string)
* @return {Promise} that resolves or rejects with an object of the form { tx: Transaction, res: Result (or err)}
*/
set(key: string, value: string): Promise<any>;
/**
* Remove the value in the database for the given key.
* @param {string} key the key
* @return {Promise} that resolves or rejects with an object of the form { tx: Transaction, res: Result (or err)}
*/
remove(key: string): Promise<any>;
}