How do I get the count/size of an array in elasticsearch

Question

I want to do a statistical facet on one of my arrays. I hope something like ``` "script" : "doc['myField'].doubleValue ``` or ``` "script" : "doc['myField'].count ``` would work. I havent found any array count method in mvel and I don't even know if accessing the array field in a script actually gives me the array.

Accepted Answer

I might have it. It seems I need to count a field inside the array instead of the array itself. This might just be because all I have are arrays of objects.

```
"script" : "doc['arrayField.objectField'].values.length"
```

How do I get the count/size of an array in elasticsearch

Solution

Problem