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javaelasticsearchelasticsearch-painless

How to access java.util.Arrays in painless script (elasticsearch)

I am trying to do a binary search on a huge array (sorted_keys) sorted_keys.length = 250,000

my_script = f"""
         if (Arrays.binarySearch({sorted_keys}, doc['_meta.key'].value) > 0)) return 0; 
         return 1;
        """
        script = {"script": {"lang": "painless", "source": my_script }}

However this script gives me a compiling error, elasticsearch7.exceptions.RequestError: RequestError(400, 'search_phase_execution_exception', 'compile error')

According to the docs it should be available https://www.elastic.co/guide/en/elasticsearch/painless/master/painless-api-reference-shared.html#_java_util

How can I use Arrays.binarySearch in painless?

Solution

  • binarySearch is available under Collections in painless unlike Java

    so changing Arrays to Collections solved my problem