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Question: Comparing Distinct Arrays of Objects

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#258 5 comments 2 reactions 0 assignees View on GitHub

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Assessment

Difficulty
5/5
Estimated time
Over a week
Newbie friendliness
20/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Stale
Tech stack
javascript
Domain
backend

Research direction

No file or test entry point is named. Start by reviewing the rule condition and operator registry around array-path evaluation; use the two supplied facts examples to define completion as same-object matching returning false for the first and true for the second.

Written by the indexing model from the issue text.

Description

Hello,

I am trying to compare an array of objects to check for a specific set of objects to be present in any of them, but not across all of them, specifically lets take this rule:

const arrayRule = {
        conditions: {
            any: [
                {
                    all: [
                        {
                            fact: 'data',
                            path: '$.[*].equalityTest',
                            operator: 'equal',
                            value: 50,
                        },
                        {
                            fact: 'data',
                            path: '$.[*].anotherTest',
                            operator: 'equal',
                            value: 50,
                        },
                    ],
                },
            ],
        },
        event: {
            type: 'arrayRule',
        },
    };

This is the first iteration of the rule I came up with, it is incorrect, but I wanted to give an idea of what I am aiming for.

Specifically here, we have a rule where I want equalityTest to equal 50 and anotherTest to also equal 50. But I want them to equal those values in the same object, such that:
THIS SHOULD RETURN FALSE

 const facts = {
                data: [
                    {
                        anotherIntegerFact: 1,
                        equalityTest: 50,
                    },
                    {
                        anotherIntegerFact: 50,
                        equalityTest: 40,
                    },
                ],
            };

THIS SHOULD RETURN TRUE

 const facts = {
                data: [
                    {
                        anotherIntegerFact: 50,
                        equalityTest: 50,
                    },
                    {
                        anotherIntegerFact: 40,
                        equalityTest: 40,
                    },
                ],
            };

Would love any suggestions or ideas on a way to tackle this. One thought was I could write my own operator and add it to the registry of operators on our end, but before I did so, I wanted to validate that is needed.

Thanks

Dominant language
JavaScript
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