ArangoDB AQL: Update single object in embedded array

Question

I am trying to update the attribute on a json document in an embedded array using AQL. How do i update the \"addressline\" for \"home\" type address using AQL below?

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Answer 1

ArangoDB now supports subset indexes. The following query is based on dothebarts answer:

FOR document IN complexCollection
    FILTER document.subList[*].filterByMe == true LIMIT 1
    UPDATE document WITH {
        items: (
            FOR element IN document.subList
                RETURN element.filterByMe == true
                     ? MERGE(element, { attributeToAlter: "the shiniest value"})
                     : element
        )
    } IN complexCollection

Note: Don't forget to create a hash index on subList[*].filterByMe:

db._collection('complexCollection')
    .ensureIndex({type:'hash',fields:['subList[*].filterByMe']});