feat: mle-ts-ords-backend template #301

README.md

@@ -59,6 +59,7 @@ The package offers the following templates, some of them connect to the database
 - `node-react-todo`: A simple task manager template that uses Node.js and [React](https://react.dev/). It demonstrates the use of the database for Create, Read, Update and Delete (CRUD) operations. It is built by [vite](https://vitejs.dev/).
 - `ords-remix-jwt-sample`: A full stack Concert Application made with [Remix](https://remix.run/) that showcases the [Oracle REST Data Services](https://www.oracle.com/database/technologies/appdev/rest.html) functionalities. Some extra configuration is required, learn more about it in the `ords-remix-jwt-sample` [Getting Started Guide](/templates/ords-remix-jwt-sample/README.md#getting-started).
 - `mle-ts-sample`: A starter template application that demonstrates how backend applications can be developed using [Oracle Database Multilingual Engine (MLE)](https://docs.oracle.com/en/database/oracle/oracle-database/23/mlejs/introduction-to-mle.html). Requires SQLcl to be installed, for more information please read [README](/templates/mle-ts-sample/README.md)
+- `mle-ts-ords-backend`: A starter template application that demonstrates how to expose MLE-based backend logic as RESTful endpoints using [Oracle REST Data Services](https://docs.oracle.com/en/database/oracle/oracle-rest-data-services/) (ORDS). This template requires both SQLcl and ORDS to be installed. For more information, please refer to the [README](/templates/mle-ts-ords-backend/).
 
 Each of the templates include documentation for you to get started with them, as well as NPM scripts for you to use right after generating the application.
 

generators/index.ts

@@ -92,6 +92,15 @@ export default class extends Generator {
             const { protocol, hostname, port, serviceName } = retrieveConnectionStringDetailsFromORAFile( path.join( walletPath, 'tnsnames.ora' ) );
             this.options.connectionString = generateConnectionString( protocol, hostname, port, serviceName );
         }
+        if(this.options.templateChoice.includes('mle-ts-ords-backend')) {
+            this.fs.copyTpl(
+                this.templatePath( '../../templates/mle-ts-sample' ),
+                this.destinationPath(),
+                {
+                    appName: this.options.appName
+                }
+            );
+        }
         // Copy files that are common to all of the templates.
         this.fs.copyTpl(
             this.templatePath( this.options.templateChoice ),
@@ -142,7 +151,7 @@ export default class extends Generator {
                 this.templatePath( `${this.options.templateChoice}/.env.example` ),
                 this.destinationPath( '.env.example' ),
             );
-        } else if (this.options.templateChoice.includes('mle-ts-sample')) {
+        } else if (this.options.templateChoice.includes('mle-ts-sample') || this.options.templateChoice.includes('mle-ts-ords-backend')) {
             if( 'walletPath' in this.options ) {
                 this.fs.copyTpl(
                     this.templatePath( `${this.options.templateChoice}/.env.example.wallet` ),

src/index.ts

@@ -207,7 +207,7 @@ export default class Generate extends Command {
         'template': Flags.string({ 
             char: 't', 
             description: 'Template to use',
-            options: ['node-vanilla', 'node-react', 'node-vue', 'node-react-todo', 'node-jet', 'node-angular', 'ords-remix-jwt-sample', 'mle-ts-sample'],
+            options: ['node-vanilla', 'node-react', 'node-vue', 'node-react-todo', 'node-jet', 'node-angular', 'ords-remix-jwt-sample', 'mle-ts-sample', 'mle-ts-ords-backend'],
             multiple: false
         }),
 
@@ -379,6 +379,11 @@ export default class Generate extends Command {
                         value: 'mle-ts-sample',
                         description: 'This creates an empty project with MLE and Oracle database connection starter code.'
                     },
+                    {
+                        name: 'mle-ts-ords-backend',
+                        value: 'mle-ts-ords-backend',
+                        description: 'Creates a starter project with MLE integration, Oracle Database connectivity, and scaffolded ORDS REST endpoints.'
+                    },
                 ],
                 pageSize: 10,
                 default: 'node-vanilla'
@@ -540,7 +545,8 @@ export default class Generate extends Command {
             } );
         }
 
-        if(templateChoice == 'mle-ts-sample'){
+        if(templateChoice == 'mle-ts-sample' || templateChoice == 'mle-ts-ords-backend') 
+        {
             // Ask the user for the path to SQLcl
             Object.assign( configObject, {
                 sqlclPath: sqlclPath === '' ? await input(

templates/mle-ts-ords-backend/.env.example

@@ -0,0 +1,16 @@
+# Database User
+DB_USER=<%= connectionUsername %>
+# Database User Password
+DB_PASSWORD=<%= connectionPassword %>
+# Connection string to your Autonomous Database/
+# Oracle Database instance
+CONNECT_STRING=<%= connectionString %>
+# Oracle MLE Module name
+MLE_MODULE=
+# Optional HTTP Proxy Settings
+# HTTPS_PROXY=
+# HTTPS_PROXY_PORT=
+
+# Path to your local SQL Developer Command Line
+# installation
+SQL_CL_PATH=<%= sqlclPath %>

templates/mle-ts-ords-backend/.env.example.wallet

@@ -0,0 +1,19 @@
+# Path to database wallet
+WALLET_PATH=<%= walletPath %>
+
+# Database User
+DB_USER=<%= connectionUsername %>
+# Database User Password
+DB_PASSWORD=<%= connectionPassword %>
+# Connection string to your Autonomous Database/
+# Oracle Database instance
+CONNECT_STRING=<%= connectionString %>
+# Oracle MLE Module name
+MLE_MODULE=
+# Optional HTTP Proxy Settings
+# HTTPS_PROXY=
+# HTTPS_PROXY_PORT=
+
+# Path to your local SQL Developer Command Line
+# installation
+SQL_CL_PATH=<%= sqlclPath %>

templates/mle-ts-ords-backend/.gitignore.template

@@ -0,0 +1,22 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+node_modules
+dist
+dist-ssr
+*.local
+
+# Editor directories and files
+.DS_Store
+
+/.env
+/.env.*
+!/.env.example
+!/.env.*.example
+/server/utils/db/wallet

templates/mle-ts-ords-backend/README.md

@@ -0,0 +1,138 @@
+<!-- markdownlint-disable MD013 -->
+
+# In-Database JavaScript with ORDS Backend Template
+
+An application template for Typescript and JavaScript developers showcasing REST API development using Oracle REST Data Services (ORDS) and Multilingual Engine (MLE).  
+**Extends [`mle-ts-sample`](../mle-ts-sample/README.md); see that template's readme for foundational features and explanations.**
+
+## Description
+
+This project builds upon the [mle-ts-sample](../mle-ts-sample/README.md) template by demonstrating how to create REST APIs within Oracle Database using [Oracle REST Data Services (ORDS)](https://docs.oracle.com/en/database/oracle/oracle-rest-data-services/) and the [Multilingual Engine (MLE) JavaScript](https://docs.oracle.com/en/database/oracle/oracle-database/23/mlejs/introduction-to-mle.html).  
+In addition to the TODO functionality of `mle-ts-sample`, this template shows how to:
+
+- Configure ORDS modules, templates, and handlers using SQL.
+- Export JavaScript functions as REST endpoints via ORDS, with handler logic in an MLE module.
+- Test REST endpoints with HTTP requests.
+- Set up a development environment using Docker Compose, with Oracle Database and an ORDS server.
+
+The basic application logic structure, build/deploy system, and database initialization approach remain as documented in the [mle-ts-sample README](../mle-ts-sample/README.md).
+
+### Project Structure
+
+Building on top of the standard [mle-ts-sample](../mle-ts-sample/README.md) layout, this template introduces several new files and conventions:
+
+| Source File                       | Used For                                                                               |
+| ---------------------------------- | ------------------------------------------------------------------------------------- |
+| `src/ords.ts`                     | Contains handler functions for ORDS REST endpoints.                      |
+| `src/index.ts`                    | Exports the public API for the MLE module (see mle-ts-sample), plus ORDS handler implementations.                |
+| `utils/database/ords.sql`         | SQL script to configure ORDS: installs ORDS modules, templates, and handlers bound to the MLE JS module.           |
+| `test/rest.test.js`               | Automated tests for the REST API endpoints, using HTTP requests against the running ORDS backend.                  |
+| `docker-compose.yml`              | Docker Compose file spinning up both Oracle Database 23 Free (`db23`) and an ORDS node (`ords-node1`).             |
+
+All standard files and scripts from [`mle-ts-sample`](../mle-ts-sample/README.md) are also present and used as described in that README.
+
+### Requirements
+
+- [Oracle Database 23ai](https://www.oracle.com/database/) or Oracle Database Free (provided via Docker Compose).
+- [Oracle REST Data Services](https://www.oracle.com/database/technologies/appdev/rest.html) (ORDS, configured for database access).
+- [SQLcl](https://www.oracle.com/database/sqldeveloper/technologies/sqlcl) for deploying MLE modules.
+- [Node.js](https://nodejs.org/).
+- (Optional) [Docker](https://www.docker.com/) and [Docker Compose](https://docs.docker.com/compose/) for quick local setup.  
+  _Note: Any suitable container engine, such as [Podman](https://podman.io/), can be used in place of Docker._
+
+### 1. Create the Application
+
+Follow the general steps in the [mle-ts-sample/README](../mle-ts-sample/README.md#getting-started) to create your project, but **choose `mle-ts-ords-backend` as the template** during `@create-database-app` initialization.
+
+### 2. (Optional) Start Development Environment with Docker Compose
+
+To quickly launch both Oracle Database and ORDS locally:
+
+```bash
+docker-compose up
+```
+This starts:
+
+- `db23` - Oracle Database 23 Free
+- `ords-node1` - ORDS server configured to use `db23`
+
+See the `docker-compose.yml` file (and its comments) for configuration options.
+
+### 3. Install Project Dependencies
+
+```bash
+npm install
+```
+
+Installs all node modules, just like in mle-ts-sample.
+
+### 4. Initialize the Database
+
+Initialize the application data tables (as in mle-ts-sample):
+
+```bash
+npm run initdb
+```
+
+### 5. Build and Deploy the MLE Module
+
+Build your application:
+
+```bash
+npm run build
+```
+
+Deploy the transpiled JS module to the database:
+
+```bash
+npm run deploy
+```
+
+Please check [mle-ts-sample/README](../mle-ts-sample/README.md) for more information about naming of the deployed modules.
+
+## REST Endpoint Development
+
+The main logic for REST endpoints is in [`src/ords.ts`](src/ords.ts).  
+This file exports handler functions used by ORDS to process REST requests. These handlers are linked to ORDS modules and templates via SQL in [`utils/database/ords.sql`](utils/database/ords.sql).
+
+> **Before running any REST API tests, you must execute [`utils/database/ords.sql`](utils/database/ords.sql) to configure the ORDS modules, templates, and handlers.**
+> 
+> **Important:** The MLE module name used in `ords.sql` is currently hardcoded. If you deployed your module under a different name, **edit `ords.sql` and replace the module name accordingly** to ensure ORDS invokes the correct module.
+
+- `src/index.ts` exports public functions and handlers for deployment as an MLE module.
+- ORDS is configured (via `ords.sql`) to call the correct JS handler for each endpoint.
+
+## Application Testing
+
+### Testing REST API Endpoints
+
+After deploying the MLE module and executing the ORDS configuration (`utils/database/ords.sql`), you can test the exposed REST API endpoints.
+
+#### Automated Testing
+
+Run the REST API test suite (see [`test/rest.test.js`](test/rest.test.js)):
+
+```bash
+npm run test
+```
+
+This will send HTTP requests to the running ORDS server and verify the responses against expectations.
+
+You can also use `curl`, `Postman`, or any HTTP client to manually test the REST endpoints.
+Example (replace `[host]`, `[port]`, `<schema>`, and path as appropriate):
+
+```bash
+curl -X GET "http://localhost:8080/ords/<schema>/<ords_module_name>/<user_id>"
+```
+
+All endpoint routes, HTTP methods, and request/response formats are defined in the ORDS configuration and documented in `utils/database/ords.sql`.
+
+## Other Testing, Cleanup, and Usage
+
+You can use all application testing and database management approaches described in [mle-ts-sample/README](../mle-ts-sample/README.md) , including PLSQL call specifications, Oracle APEX, and other methods.
+
+## Links for Further Reading
+- [mle-ts-sample/README](../mle-ts-sample/README.md) - foundational documentation for this template.
+- [ORDS Documentation](https://docs.oracle.com/en/database/oracle/oracle-rest-data-services/index.html)
+- [Docker Compose](https://docs.docker.com/compose/)
+- [Podman Compose](https://docs.podman.io/en/v5.3.1/markdown/podman-compose.1.html)

templates/mle-ts-ords-backend/docker-compose.yml

@@ -0,0 +1,32 @@
+version: '2.4'
+services:
+  db23:
+    hostname: database
+    image: container-registry.oracle.com/database/free:latest
+    environment:
+      - ORACLE_PDB=FREEPDB1
+      - ORACLE_PWD=oracle
+      - DBHOST=database
+    ports:
+      - 1235:1521
+    mem_limit: 4096m
+    cpus: 2
+  ords-node1:
+    hostname: ords-node
+    image: container-registry.oracle.com/database/ords:latest
+    environment:
+      - CONN_STRING=//database:1521/FREEPDB1
+      - ORACLE_PWD=oracle
+    volumes:
+      - ./ords/config:/etc/ords/config
+      - ./apex:/opt/oracle/apex
+    ports:
+      - 8080:8080   
+    healthcheck:
+      test: curl --noproxy "localhost" -f -k http://localhost:8080/ords/ || exit 1
+      interval: 30s
+      timeout: 10s
+      retries: 150
+    depends_on:
+      db23:
+        condition: service_healthy

templates/mle-ts-ords-backend/src/index.ts

@@ -0,0 +1,3 @@
+export { createUserHandler, getUserHandler, deleteUserHandler, updateUserHandler } from './ords';
+//needed for basic tests of MLE module calls
+export { newUser, getUser, updateUser, deleteUser } from './todos';

templates/mle-ts-ords-backend/src/ords.ts

@@ -0,0 +1,40 @@
+import { newUser, getUser, deleteUser, updateUser } from './todos';
+
+export async function createUserHandler(req, resp) {
+    const id = await newUser(req.query_parameters.name);
+    resp.status(201);
+    resp.content_type('application/json');
+    resp.json({ id });    
+}
+export async function getUserHandler(req, resp) {
+    const userName = await getUser(parseInt(req.uri_parameters.id));
+    if(!userName) {
+        resp.status(404);
+        resp.content_type('application/json');
+        resp.json({msg: "User not found"});
+    } else {
+        resp.status(200);
+        resp.content_type('application/json');
+        resp.json(userName);    
+    }
+}
+export async function deleteUserHandler(req, resp) {
+    const deleted = await deleteUser(parseInt(req.uri_parameters.id));
+    if (deleted > 0) {
+        resp.status(200);
+    } else {
+        resp.status(404);
+    }
+    resp.content_type('application/json');
+    resp.json({ rowsDeleted: deleted });
+}
+export async function updateUserHandler(req, resp) {
+    const updated = await updateUser(parseInt(req.uri_parameters.id),req.query_parameters.name);
+    if (updated > 0) {
+        resp.status(200);
+    } else {
+        resp.status(404);
+    }
+    resp.content_type('application/json');
+    resp.json({ rowsUpdated: updated });
+}