Check array is empty or not

Hi Experts,

I have a requirement where I need to check ‘group’ array is empty or not. Could someone help with the JSON path expression.

Empty group array JSON looks like:
[
{
“group”: [
{}
]
}
]
Non empty group array json loiks like:

[
{
“group”: [
{
“ID”: “002”
}
{
“ID”: “003”
}
]
}
]

Thanks in Advance.

Hey @Gayathry,

Check it’s length with the .length method:

$.group.length > 0

Case 1 will return false, Case 2 will return true.

Regards,

Bojan

Thanks Bojan for your quick reply.
Actually as per my requirement inside ‘group’ if getting a empty list ‘{}’, it should return false . But group.lengh is returning true even if list is empty(ie {}).
eg:
if JSON is like below it should return false.
“group”: [
{}
]

@Gayathry, go with the following expression:

$group.filter(x=>x.hasPath('ID')).length > 0

Thanks a lot Bojan. instead if using ‘ID’ in json path expression is there any other way to check list is empty as the object ‘ID’ name is a dynamic one.

Yes @Gayathry , try this:

$group.filter(x=>x.keys().length != 0).length > 0

2 Likes

Thank you so much. It worked.

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