zer
v0.1.0
Published
Generate Gremlin queries by chaining JavaScript function calls
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zer
Zer helps you serialize any JavaScript chains to String representations of any languages by leveraging ES2015 Proxy
objects.
Installation
npm install zer
Usage
Zer is currently useful for generating Gremlin-Groovy graph database queries.
import { createChainCreator } from 'zer';
import { toGroovy } from 'zer/src/groovy';
import { STRATEGY } from 'zer/src/chain';
const Objects = createChainCreator(STRATEGY, toGroovy);
const { g, out, has } = Objects;
const chain = g.V().has('name', 'Alice').repeat(out('knows')).until(has('name', 'Bob'));
console.log(chain.__repr__());
// g.V().has('name', 'Alice').repeat(out('knows')).until(has('name', 'Bob'))
Argument escaping
Zer allows you to output Objects, not just Strings. This is especially useful when you wish to escape some arguments from your chain, such as when creating a DSL for a database client (SQL, Gremlin...).
const chain = g.V().has('name', 'Alice').repeat(out('knows')).until(has('name', 'Bob'));
console.log(chain.__repr__())
/*
{ query: 'g.V().has(p0, p1).has(p2, p3).repeat(out(p4, p5))',
params:
{ p0: 'name',
p1: 'Alice',
p2: 'age',
p3: 30,
p4: 'firstname',
p5: 'Bob' }
*/