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@credenceanalytics/import-oracledb-schema

v1.0.4

Published

Import Schema to Oracle Database

Downloads

30

Readme

Import of Oracle Schema to database

This Node.js module imports Oracle schema script files to Oracle database.

Introduction

This module provides a utility to import JSON structure tables & other DDL object types using the provided scripts files.

Import Features

  • Create table structure using JSON schema files
  • Add/Modify table columns by comparing JSON schema files & column definition in oracle database
  • Create/Replace other object types like view, function etc. to Oracle database
  • Selective import of objects
  • Import of all objects from the schema definition folder
  • Recompile invalid database objects like procedures, functions etc.

Requirements

  • Node.js
  • Oracle Database, Client libraries
  • Scheme JSON/Script files exported using NPM Module - oracledb-to-json-schema

Installation

npm install @credenceanalytics/import-oracledb-schema

Usage

schemaToDb(dbConnObj, options, configFilePath)

  • dbConnObj - Oracle database connection object created using oracledb.getConnection()
  • options: Additional feature based option parameters.
    • exportDir - Path where the definition folder is available which contains oracledb schema.
    • sql_output - To generate insert statements as .sql files. Default is false
      • true - Save import script as sql files
      • false - Import script without saving the script in sql files.
    • is_new_setup - To validate if the import is for new schema or existing schema. Default is true
      • true - Import only if the schema is blank i.e. no object available. Fresh Setup Installation.
      • false - Import even if schema contains any object. It will overwrite or update the existing objects as per the import schema.
  • configFilePath : Optional
    • Default: Import of all objects from the schema definition folder
    • Provide list of selective schema objects to import - schemaimport.sample.json
      {
          "procedure": ["APP_REFRESH_DATA", "WM_LOGPROCESSDETAIL"],
          "view": ["AUDIT_BANKACCOUNTS", "BANK_VIEW"],
          "table": ["GLOBAL_SECURITY", "WORKFLOW_SECURITYDEF"]
      }

Options:

  • Import Schema of all objects
    schemaToDb(dbConnObj, options);
  • Import Schema of selective objects
    schemaToDb(dbConnObj, options, schemaImpConfigFilePath);

Sample code to import full schema:

  • index.js

    const importSchema = require("@credenceanalytics/import-oracledb-schema");
    const oracledb = require("oracledb");
    const impSchema = new importSchema();
    const dbconfig = {
        username: "",
        password: "",
        host: "",
        database: ""
    };
    const options = { exportDir: "./dbmodel/legacy", sql_output: true, is_new_setup: true };
    
    async function importAllSchemaToDb() {
        console.time("importAllSchemaToDb");
        if (!validateDbConfig(dbconfig)) return;
        const connectString = `${dbconfig.host}/${dbconfig.database}`;
        let dbConnObj;
        try {
            dbConnObj = await oracledb.getConnection({ user: dbconfig.username, password: dbconfig.password, connectString });
            var resp = await impSchema.schemaToDb(dbConnObj, options);
            console.log("Result:", resp);
            console.log("Import-status:", resp.status);
            console.log("Import-message:", resp.message);
            // console.log("Import-result:", resp.import_result);
            console.log("Import-summary:", resp.import_summary);
        } catch (error) {
            console.error("Oracle DB execution exception:", error);
            throw error;
        } finally {
            if (dbConnObj) {
                try {
                    await dbConnObj.close();
                } catch (error) {
                    console.error("Error closing connection:", error);
                    throw error;
                }
            }
        }
        console.timeEnd("importAllSchemaToDb");
    }
    function validateDbConfig(config) {
        const requiredKeys = ["username", "password", "host", "database"];
        for (const key of requiredKeys) {
            if (!(key in config) || config[key] === "") {
                console.error(`Error: ${key} is missing or empty in dbconfig.`);
                return false;
            }
        }
        return true;
    }
    importAllSchemaToDb();

Additional Resources

Package to export full oracle database schema : oracledb-to-json-schema