benmarch / spel2js Goto Github PK

suppose employe.id = null and expression = "employe.id ? true : false"
if I am trying to evaluate the above expression using SpelExpressionEvaluator.compile(expression) function call. It returns NullPointer exception which was not happening in 0.2.5

Using angular 13 i get the following error:
Could not find a declaration file for module 'spel2js'
when trying to import as:
import { StandardContext, SpelExpressionEvaluator } from 'spel2js';

I was using const spel2js = require('spel2js'); with angular 12 but it does not work on 13 (and i don't know why).

It seems the solution is for you to provide something like @types/spel2js

Hi,

I have a custom class that is existed some variables. I wrote a method that takes a variable inside it and want to evaluate with spel2js. But, I take an error as shown below

"TypeError: Cannot read property 'activeContext' of undefined"

I also share symbolic codes below.

//Class
export class Clazz{
//variables
//method
public foo(variable:string) : string{
//business Logic
}
}

const spelContext = StandardContext.create();
const compiledExpression = SpelExpressionEvaluator.compile("#foo('123') == '123'");
let result = compiledExpression.eval(spelContext, this.clazz);

Hi there, very useful library, Thank you, all!

I got one problem when i use safe navigation.
when i use multi ?. operators like:

"nested?.doesNotExist?.test"

will throw exception:

ContextDoesNotExistException: Attempting to look up property 'test' for an undefined context.

So is this a bug or i have some misunderstanding about safe navigation ?

Hi,

I'm using Angular 8 for frontend. I have an expression and object for evaluating. For example expression is "(getSubFoo()!=null && getSubFoo() == 'XYZ')" and object is
export class Foo{
field1: string;
field2:string;
public getSubFoo(): string{
// some implementations
}
}

When i want to run above evaluation, evaluation drops to catch and error is message: "Method getSubFoo does not exist."
name: "NullPointerException".

Does spel2js provide to evaluate methods?

Best Regards,
Burak Mert.

object.property throws null pointer exception when object is defined and there is no property.
Ideally it should not throw an exception instead return null or undefined.

example:
let obj = {a: 1, b: 2} is present in the context
and when I try to evaluate the expression like "obj.c == 3 ? true : false" it throws null pointer exception.

I can see nullSafeNavigation is false for me. is there a way I can make it true so that it returns null.

spel2js failed to compile expression with negative value
version: 0.2.6

test('test', () => {
    let c = spel2js.SpelExpressionEvaluator.compile('1.0 > -5000.0')  // fail to compile
    console.log(c);
})

// test failed
// Cannot read property 'setParent' of undefined

When I am trying to evaluate the following expression:

{'PHONE','EMPLOYMENT_PHONE','WORK_PHONE'}.contains(classification)

Error is threw:

It looks that the contains method is not supported

Here I leave all data needed to reproduce it:

import { SpelExpressionEvaluator } from 'spel2js';

const context = {
    classification: 'PHONE',
};
const expr = `{'PHONE','EMPLOYMENT_PHONE','WORK_PHONE'}.contains(classification)`;
const compiledPrecondition = SpelExpressionEvaluator.compile(expr);
const result = compiledPrecondition.eval(context);

Hi - very useful library, thanks!

If you are ready to do so - are you able to push a new version (0.2.4 I guess) to NPM? There seems to be some packaging issue we have with the published 0.2.3 version that appears to be resolved on HEAD; possibly due to the switch to webpack; but that doesn't seem to be released yet.

This test works fine.

This one fails:

that's the error:

semantically these should be equal. What's wrong?

Anyway the getValue is correct, the problem is on the setValue.