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3 years ago

A Deno.js Javascript Client Implementing The ADODB Protocol on Windows

deno-adodb

A deno.js javascript client implementing the ADODB protocol on windows.

Warnings

  1. This project is in the early stages of its development. So many things can still change.
  2. To use deno-adodb you must manually save the contents of the repository on your PC. I don’t know if it will be possible to avoid this in the future.
  3. The library need system support Microsoft.Jet.OLEDB.4.0 or Microsoft.ACE.OLEDB.12.0, Windows XP SP2 above support Microsoft.Jet.OLEDB.4.0 by default, Others need to install support! Recommended use Microsoft.ACE.OLEDB.12.0, download: Microsoft.ACE.OLEDB.12.0

How to use

Create a demo.ts file containing this code:

import { execute, cscriptSync, command } from "./mod.ts";

const nameDatabase = Deno.args[0];
const cscriptString: string = cscriptSync();

const cmd = command.schema.getAllTables(cscriptString, nameDatabase);
const result = await execute(cmd);

console.log("CAPTURED:" , result.captured);
console.log("CMD:", result.cmd);
console.log("STATUS ADODB:" , result.statusAdodb);
console.log(JSON.parse(result.result));

From the terminal use this code:

deno run --unstable --allow-run --allow-read --allow-env demo.ts "./demo/adodb.mdb"

parse.result will contain an object similar to this:

{
  schema: [
    { TABLE_NAME: "MSysAccessObjects", TABLE_TYPE: "ACCESS TABLE" },
    { TABLE_NAME: "MSysACEs", TABLE_TYPE: "SYSTEM TABLE" },
    { TABLE_NAME: "MSysNavPaneGroupCategories", TABLE_TYPE: "ACCESS TABLE" },
    { TABLE_NAME: "MSysNavPaneGroups", TABLE_TYPE: "ACCESS TABLE" },
    { TABLE_NAME: "MSysNavPaneGroupToObjects", TABLE_TYPE: "ACCESS TABLE" },
    { TABLE_NAME: "MSysNavPaneObjectIDs", TABLE_TYPE: "ACCESS TABLE" },
    { TABLE_NAME: "MSysObjects", TABLE_TYPE: "SYSTEM TABLE" },
    { TABLE_NAME: "MSysQueries", TABLE_TYPE: "SYSTEM TABLE" },
    { TABLE_NAME: "MSysRelationships", TABLE_TYPE: "SYSTEM TABLE" },
    { TABLE_NAME: "Users", TABLE_TYPE: "TABLE" }
  ]
}

MODULES:

  • cscript and cscriptSync: identifies the location of “cscript.exe” on the PC where deno-adodb is launched.
  • execute: performs operations on the database and return the result in the form of JSON (or CVS).
  • command: a set of predefined commands to pass as an argument to execute

COMMAND.SCHEMA

Query database schema information (see SchemaEnum).

  • schema.getAllTables(cscriptString, nameDatabase);: Returns the tables (including views) defined in the catalog that are accessible to a given user.

COMMAND.QUERY

Query tables:

  • query.getAllValue(cscriptString, nameDatabase, nomeTable);: Returns all of the fields and records for the table (or view).
  • query.sql(cscriptString, nameDatabase, sqlString);: Execute a SQL statement.

TO DO

  • [x] schema.getAllTables(cscriptString, nameDatabase);: Returns the tables (including views) defined in the catalog that are accessible to a given user.
  • [ ] schema.getTablesByType(cscriptString, nameDatabase, tableType);: Returns the tables (including views) defined in the catalog that are accessible to a given user.
  • [x] query.sql(cscriptString, nameDatabase, sqlString);: Execute a SQL statement.

Download Details:

Author: el3um4s

Source Code: https://github.com/el3um4s/deno-adodb

#deno #nodejs #javascript

A Deno.js Javascript Client Implementing The ADODB Protocol on Windows
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