cxn-engine v0.0.3

CXN Execution Engine

general CXN execution engine

Get Started

const { execute } = require("cxn-engine")
const cds = require("@sap/cds-compiler");
const compileCXN = cds.parse.expr;

const ctx = {
  a: ["1", "2", 3, 4],
  b: [{ c: 1 }, { c: 2, name: "a name" }, { c: 3 }],
  c: { d: [{ e: { f: { value: 1 } } }] }
};

expect(execute(compileCXN("a"), ctx)).toBe(ctx.a);
expect(execute(compileCXN("a[0]"), ctx)).toBe(ctx.a[0]);
expect(execute(compileCXN("a[2]"), ctx)).toBe(ctx.a[2]);
expect(execute(compileCXN("b[c=2]"), ctx)).toStrictEqual([ctx.b[1]]);
expect(execute(compileCXN("first(b[c=2])"), ctx)).toBe(ctx.b[1]);
expect(execute(compileCXN("b[c=2].name"), ctx)).toBe(ctx.b[1].name);
expect(execute(compileCXN("c.d[0].e.f.value"), ctx)).toBe(ctx.c.d[0].e.f.value);

Operators

• Logic
  • Deep Equal
• Numeric
  • Numeric Common Order (* and / should be calculated firstly)
• Compare
• Like/Between
• NOT
• IN
• IS
• EXISTS

Reference Evaluation

• Chain
• Deep
• Where

Built-in Functions

• first
• last
• sum
• avg
• min
• max
• assign
• append (covered by Array.prototype.concat)
• groupBy
• uuid
• nanoid
• Array.prototype.*
• Date.prototype.*
• Number.prototype.*
• String.prototype.*

Param Binding

• param binding

Security

• disable prototype access
• execution timeout

CHANGELOG

LICENSE