INNER CODE UNIT · JavaScript

checkQueryResult

scalar-labs/scalardb · core/src/main/resources/cosmosdb_stored_procedure/mutate.js:88

  function checkQueryResult(mutation, record, reads) {
    if (!reads || !reads.length) {
      // The specified record does not exist
      if (mutation == MUTATION.PUT || mutation == MUTATION.PUT_IF_NOT_EXISTS) {
        return [deleteNullValues(record)];
      } else {
        // For other conditional mutations, the condition isn't satisfied
        return [];
      }
    }

    if (mutation == MUTATION.PUT_IF_NOT_EXISTS) {
      return [];
    } else if (mutation == MUTATION.PUT || mutation == MUTATION.PUT_IF) {
      if (reads.length != 1) {
        throw new Error("Unable to update multiple records.");
      } else {
        return [merge(reads[0], record)];

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