mgnlq_testmodel2

Purpose

This file serves as the entry point for obtaining model data to

testmodel(1) and testmodel2

Note that testmodel data is located outside this project in mgnlq_testmodel (this is as it is directly used to test mgnql_model)

load data into mongodb

for testdb2

Create mongo database ( specified in constants.ts ) default: testdb2

from files in testmodel2/models.json

  npm install
  npm run load_testdb2

Note Content of a present DB will be deleted!

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To create a different DB, set M

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The mongo testmodel replay files and an hard coded instantiation hook assuming:

| Property | |Value (hard coded!) |:---------|---|:---------------------------- |Mongo DB Connection string || 'mongodb://localhost/testdb' |recordign folder | | test/data/mongoose_record_replay/testmodel/ |Control environment varialbe || MGNLQ_TESTMODEL_REPLAY

| Property | |Value (hard coded!) |:---------|---|:---------------------------- |Mongo DB Connection string || 'mongodb://localhost/testdb2' |recordign folder | | test/data/mongoose_record_replay/testmodel2/ |Control environment varialbe || MGNLQ_TESTMODEL2_REPLAY

Note: When using this model, in default mode no mongo connection is established and REPLAY mode is on. (see mongoose_record_replay)

usage

plain hook:

    const Model = require('mgnlq_model');

    require('mgnlq_testmodel2').getTestModel2().then( theModel =>
        {
            // your code using theModel
            Model.releaseModel(theModel);
        }
    );

just use file storage.

    var mongooseMock = require('mongoose_record_replay').instrumentMongoose(require('mongoose'),
        'node_modules/mgnlq_testmodel2/mgrecrep/',
        mode);
    var aPromise = undefined;
    function getModel() {
        if(mode === 'REPLAY') {
            // in replay mode during testing, using a singleton is sufficient
            aPromise = aPromise || Model.loadModelsOpeningConnection(mongooseMock,'mongodb://localhost/testdb2'  );
            return aPromise;
    }
    // open a real connection, which has to be closed
    return Model.loadModelsOpeningConnection(mongooseMock, 'mongodb://localhost/testdb');
}

environment Switching to Record mode ...

environment variable MGNLQ_TESTMODEL2_REPLAY control the mode.

1. REPLAY (default)
2. RECORD
3. OFF

Note : Recording data is now in the local target project and not shared via this project, data recorded here is solely for unit testing of this project

Beware: the underlying model uses a caching mechanism, thus it attempts to write to folders.

Similar, in RECORD mode, mgrecrep/queries.json and mgrecrep2/data may be extened with new files.

Tasks to maintain the model

Rebuilding the model from scratch (raw files)

check database name in constants2.ts (typically testdb2)

env_reset.cmd
npm run load_testdb

Rebuilding the model from raw data of old format

node js/scripts/migrate_raw.js

(copies to /tmp) requires manual postprocessing and merging