Given complex business logic in Javascript and MongoDB, derive properties functionally.
npm install u5-deriveGiven complex business logic in Javascript and MongoDB, derive properties functionally.
In other words:
* Given
* business data in MongoDB,
* a description of derivable properties (see ./samples/simple/domain.js)
* When
* state changes
* then
* Derive properties.
Erm, don't use, not ready.
This is experimental, it runs a REPL for one of the samples:
``
./node_modules/.bin/babel-node ./samples/simple/index.js
There is experimental documentation.
Checkout gh-pages branch, then run ./scripts/update-docs.sh. (It should
merge master and build docs etc.)
Make sure* you do the configuration to your MongoDB instance below.
* Note that by default mongodb://localhost/u5-derive-test will be used when
running the test, as per
__tests__/config.js.
* Once done:
`bash`
npm run test
Currently needed:
- MONGO_TAIL_URL
-
-
In addition, your local mongod may have to be configured as a standalone replica set:
* Make sure you run mongod with the parameter --replSet test (where "test"
is the name of the replSet, could be a different name).
* initiate the replSet (inside a mongo shell) with:
`
rs.initiate({ _id: "test", version: 1, members: [ { _id: 1, host: "localhost:27017" } ] })
If you don't do this, you may get errors about "cursor not tailable" or similar.
(just a beginning)
In order to speak about domain models, we require potentially unfamiliar, abstract
terminology: We can't say any more
"one person has many addresses" (concrete), we have to look at
"is it a to-one or a to-many association".
For this, terminology should (but currently isn't, at least not fully) aligned
with the
UML terminology.