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Graph/af48c273-be67-4aee-9d24-642f6db08e55

Domainunvalidated

Expression Evaluation

af48c273-be67-4aee-9d24-642f6db08e55

Expression Evaluation

Node Details

Public graph metadata

Updated5/1/2026

PageRank0.0000

Effectiveness0.000

Connections

7 linked nodes

PERTAIN_TOProblem

I need a way to sandbox the code and limit its permissions. — dynamically loading and executing third-party code. Outcome: there are (currently) no alternatives for running untrusted Java code within a Java application.

PERTAIN_TOProblem

expr-eval comes with a lot of possibilities like ternary conditions, variable declarations and so on. — I want to re-run the calculation with the incoming data on the server using PHP. Tension: there is no equivalent library for PHP. Outcome: would be the way of running such a verification?

PERTAIN_TOSolution

you're going to need to define your syntax very strictly, implement your own parser then hand off the final expression to eval. — if you allow anything which is not an arithmentic operator or a number to be 'eval'ed. Tension: the code is exploitable. Outcome: hand off the final expression to eval.

PERTAIN_TOProblem

When I change the formula to use LEFT, concatenation of three columns and a fallback value — Apache POI 5.2.5. Tension: the evaluator returns an error. Outcome: result.getErrorValue() == 15 (#VALUE! error).

PERTAIN_TOSolution

add a new helper column (column `X`) to hold the concatenated lookup keys — Instead of performing the complex concatenation inside the `XLOOKUP` formula. Outcome: reference this new helper column.

PERTAIN_TOSolution

I’m trying to use GraalVM to execute JavaScript code that makes a REST call using Java. — execute JavaScript code that makes a REST call.

PERTAIN_TOProblem

GraalVM JavaScript is not installed, so Context.newBuilder("js") and ScriptEngineManager.getEngineByName("JavaScript") fail

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