316 lines
9.2 KiB
TypeScript
316 lines
9.2 KiB
TypeScript
// Copyright IBM Corp. 2018,2019. All Rights Reserved.
|
|
// Node module: loopback-datasource-juggler
|
|
// This file is licensed under the MIT License.
|
|
// License text available at https://opensource.org/licenses/MIT
|
|
|
|
import {AnyObject, Callback, Options} from './common';
|
|
import {Connector} from './connector';
|
|
import {
|
|
ModelBaseClass,
|
|
ModelBuilder,
|
|
ModelDefinition,
|
|
PropertyDefinition,
|
|
} from './model';
|
|
import {EventEmitter} from 'events';
|
|
import {IsolationLevel, Transaction} from './transaction-mixin';
|
|
|
|
/**
|
|
* LoopBack models can manipulate data via the DataSource object.
|
|
* Attaching a `DataSource` to a `Model` adds instance methods and static methods to the `Model`.
|
|
*
|
|
* Define a data source to persist model data.
|
|
* To create a DataSource programmatically, call `createDataSource()` on the LoopBack object; for example:
|
|
* ```js
|
|
* var oracle = loopback.createDataSource({
|
|
* connector: 'oracle',
|
|
* host: '111.22.333.44',
|
|
* database: 'MYDB',
|
|
* username: 'username',
|
|
* password: 'password'
|
|
* });
|
|
* ```
|
|
*
|
|
* All classes in single dataSource share same the connector type and
|
|
* one database connection.
|
|
*
|
|
* For example, the following creates a DataSource, and waits for a connection callback.
|
|
*
|
|
* ```
|
|
* var dataSource = new DataSource('mysql', { database: 'myapp_test' });
|
|
* dataSource.define(...);
|
|
* dataSource.on('connected', function () {
|
|
* // work with database
|
|
* });
|
|
* ```
|
|
* @class DataSource
|
|
* @param {String} [name] Optional name for datasource.
|
|
* @options {Object} settings Database-specific settings to establish connection (settings depend on specific connector).
|
|
* The table below lists a typical set for a relational database.
|
|
* @property {String} connector Database connector to use. For any supported connector, can be any of:
|
|
*
|
|
* - The connector module from `require(connectorName)`.
|
|
* - The full name of the connector module, such as 'loopback-connector-oracle'.
|
|
* - The short name of the connector module, such as 'oracle'.
|
|
* - A local module under `./connectors/` folder.
|
|
* @property {String} host Database server host name.
|
|
* @property {String} port Database server port number.
|
|
* @property {String} username Database user name.
|
|
* @property {String} password Database password.
|
|
* @property {String} database Name of the database to use.
|
|
* @property {Boolean} debug Display debugging information. Default is false.
|
|
*
|
|
* The constructor allows the following styles:
|
|
*
|
|
* 1. new DataSource(dataSourceName, settings). For example:
|
|
* - new DataSource('myDataSource', {connector: 'memory'});
|
|
* - new DataSource('myDataSource', {name: 'myDataSource', connector: 'memory'});
|
|
* - new DataSource('myDataSource', {name: 'anotherDataSource', connector: 'memory'});
|
|
*
|
|
* 2. new DataSource(settings). For example:
|
|
* - new DataSource({name: 'myDataSource', connector: 'memory'});
|
|
* - new DataSource({connector: 'memory'});
|
|
*
|
|
* 3. new DataSource(connectorModule, settings). For example:
|
|
* - new DataSource(connectorModule, {name: 'myDataSource})
|
|
* - new DataSource(connectorModule)
|
|
*/
|
|
export declare class DataSource extends EventEmitter {
|
|
name: string;
|
|
settings: Options;
|
|
|
|
initialized?: boolean;
|
|
connected?: boolean;
|
|
connecting?: boolean;
|
|
|
|
connector?: Connector;
|
|
|
|
DataAccessObject: AnyObject & {prototype: AnyObject};
|
|
|
|
constructor(name: string, settings?: Options, modelBuilder?: ModelBuilder);
|
|
|
|
constructor(settings?: Options, modelBuilder?: ModelBuilder);
|
|
|
|
constructor(
|
|
connectorModule: Connector,
|
|
settings?: Options,
|
|
modelBuilder?: ModelBuilder,
|
|
);
|
|
|
|
/**
|
|
* Create a model class
|
|
* @param name Name of the model
|
|
* @param properties An object of property definitions
|
|
* @param options Options for model settings
|
|
*/
|
|
createModel<T extends ModelBaseClass>(
|
|
name: string,
|
|
properties?: AnyObject,
|
|
options?: Options,
|
|
): T;
|
|
|
|
/**
|
|
* Look up a model class by name
|
|
* @param modelName Model name
|
|
* @param forceCreate A flag to force creation of a model if not found
|
|
*/
|
|
getModel(
|
|
modelName: string,
|
|
forceCreate?: boolean,
|
|
): ModelBaseClass | undefined;
|
|
|
|
/**
|
|
* Remove a model from the registry.
|
|
*
|
|
* @param modelName
|
|
*/
|
|
deleteModelByName(modelName: string): void;
|
|
|
|
/**
|
|
* Remove all models from the registry, but keep the connector instance
|
|
* (including the pool of database connections).
|
|
*/
|
|
deleteAllModels(): void;
|
|
|
|
/**
|
|
* Attach an existing model to a data source.
|
|
* This will mixin all of the data access object functions (DAO) into your
|
|
* modelClass definition.
|
|
* @param {ModelBaseClass} modelClass The model constructor that will be enhanced
|
|
* by DataAccessObject mixins.
|
|
*/
|
|
attach(modelClass: ModelBaseClass): ModelBaseClass;
|
|
|
|
automigrate(models?: string | string[]): Promise<void>;
|
|
// legacy callback style
|
|
automigrate(models: string | string[] | undefined, callback: Callback): void;
|
|
|
|
autoupdate(models?: string | string[]): Promise<void>;
|
|
// legacy callback style
|
|
autoupdate(models: string | string[] | undefined, callback: Callback): void;
|
|
|
|
discoverModelDefinitions(
|
|
options?: Options,
|
|
): Promise<ModelDefinition[]>;
|
|
// legacy callback style (no options)
|
|
discoverModelDefinitions(
|
|
callback: Callback<ModelDefinition[]>,
|
|
): void;
|
|
// legacy callback style (with options)
|
|
discoverModelDefinitions(
|
|
options: Options,
|
|
callback: Callback<ModelDefinition[]>,
|
|
): void;
|
|
|
|
discoverModelProperties(
|
|
modelName: string,
|
|
options?: Options,
|
|
): Promise<PropertyDefinition[]>;
|
|
// legacy callback style (no options)
|
|
discoverModelProperties(
|
|
modelName: string,
|
|
callback: Callback<PropertyDefinition[]>,
|
|
): void;
|
|
// legacy callback style (with options)
|
|
discoverModelProperties(
|
|
modelName: string,
|
|
options: Options,
|
|
callback: Callback<PropertyDefinition[]>,
|
|
): void;
|
|
|
|
discoverPrimaryKeys(
|
|
modelName: string,
|
|
options?: Options,
|
|
): Promise<PropertyDefinition[]>;
|
|
// legacy callback style (no options)
|
|
discoverPrimaryKeys(
|
|
modelName: string,
|
|
callback: Callback<PropertyDefinition[]>,
|
|
): void;
|
|
// legacy callback style (with options)
|
|
discoverPrimaryKeys(
|
|
modelName: string,
|
|
options: Options,
|
|
callback: Callback<PropertyDefinition[]>,
|
|
): void;
|
|
|
|
discoverForeignKeys(
|
|
modelName: string,
|
|
options?: Options,
|
|
): Promise<PropertyDefinition[]>;
|
|
// legacy callback style (no options)
|
|
discoverForeignKeys(
|
|
modelName: string,
|
|
callback: Callback<PropertyDefinition[]>,
|
|
): void;
|
|
// legacy callback style (with options)
|
|
discoverForeignKeys(
|
|
modelName: string,
|
|
options: Options,
|
|
callback: Callback<PropertyDefinition[]>,
|
|
): void;
|
|
|
|
discoverExportedForeignKeys(
|
|
modelName: string,
|
|
options?: Options,
|
|
): Promise<PropertyDefinition[]>;
|
|
// legacy callback style (no options)
|
|
discoverExportedForeignKeys(
|
|
modelName: string,
|
|
callback: Callback<PropertyDefinition[]>,
|
|
): void;
|
|
// legacy callback style (with options)
|
|
discoverExportedForeignKeys(
|
|
modelName: string,
|
|
options: Options,
|
|
callback: Callback<PropertyDefinition[]>,
|
|
): void;
|
|
|
|
discoverAndBuildModels(
|
|
modelName: string,
|
|
options?: Options,
|
|
): Promise<{[name: string]: ModelBaseClass}>;
|
|
// legacy callback style (no options)
|
|
discoverAndBuildModels(
|
|
modelName: string,
|
|
callback: Callback<{[name: string]: ModelBaseClass}>,
|
|
): void;
|
|
// legacy callback style (with options)
|
|
discoverAndBuildModels(
|
|
modelName: string,
|
|
options: Options,
|
|
callback: Callback<{[name: string]: ModelBaseClass}>,
|
|
): void;
|
|
|
|
discoverSchema(
|
|
tableName: string,
|
|
options?: Options,
|
|
): Promise<AnyObject>;
|
|
// legacy callback style (no options)
|
|
discoverSchema(
|
|
tableName: string,
|
|
callback: Callback<AnyObject>,
|
|
): void;
|
|
// legacy callback style (with options)
|
|
discoverSchema(
|
|
tableName: string,
|
|
options: Options,
|
|
callback: Callback<AnyObject>,
|
|
): void;
|
|
|
|
discoverSchemas(
|
|
tableName: string,
|
|
options?: Options,
|
|
): Promise<AnyObject[]>;
|
|
// legacy callback style (no options)
|
|
discoverSchemas(
|
|
tableName: string,
|
|
callback: Callback<AnyObject[]>,
|
|
): void;
|
|
// legacy callback style (with options)
|
|
discoverSchemas(
|
|
tableName: string,
|
|
options: Options,
|
|
callback: Callback<AnyObject[]>,
|
|
): void;
|
|
|
|
buildModelFromInstance(
|
|
modelName: string,
|
|
jsonObject: AnyObject,
|
|
options?: Options,
|
|
): ModelBaseClass;
|
|
|
|
connect(): Promise<void>;
|
|
// legacy callback style
|
|
connect(callback: Callback): void;
|
|
|
|
disconnect(): Promise<void>;
|
|
// legacy callback style
|
|
disconnect(callback: Callback): void;
|
|
|
|
// Only promise variant, callback is intentionally not described.
|
|
// Note we must use `void | PromiseLike<void>` to avoid breaking
|
|
// existing LoopBack 4 applications.
|
|
// TODO(semver-major): change the return type to `Promise<void>`
|
|
stop(): void | PromiseLike<void>;
|
|
|
|
ping(): Promise<void>;
|
|
// legacy callback style
|
|
ping(callback: Callback): void;
|
|
|
|
// Only promise variant, callback is intentionally not supported.
|
|
execute(
|
|
command: string | object,
|
|
args?: any[] | object,
|
|
options?: Options,
|
|
): Promise<any>;
|
|
|
|
/**
|
|
* Begin a new transaction.
|
|
*
|
|
*
|
|
* @param [options] Options {isolationLevel: '...', timeout: 1000}
|
|
* @returns Promise A promise which resolves to a Transaction object
|
|
*/
|
|
beginTransaction(options?: IsolationLevel | Options): Promise<Transaction>;
|
|
}
|