de.digitalcollections.iiif.bookshelf.config.mongeez.changeset_002.xml Maven / Gradle / Ivy

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<mongoChangeLog>

  <changeSet changeId="Bookshelf-002" author="ralf">
    <script>
      // Get the collection
      var collection = db.getCollection('iiif-manifest-summaries');
      // Initialize the Ordered Batch
      var bulk = collection.initializeOrderedBulkOp();
      var bulkResult;
      // Initialize the counter
      var counter = 0;

      collection.find({'viewId': {$exists: false}}).forEach(function(doc){
        var uri = doc.manifestUri;
        var prefix = uri.substring(0, uri.indexOf("/manifest"));
        var viewId = prefix.substring(prefix.lastIndexOf("/") + 1);

        bulk.find({"_id": doc._id}).updateOne({
          '$set': {'viewId': viewId}
        });

        counter++;

        if(counter % 1000 === 0 ){
          bulkResult = bulk.execute(/*function(error, result){
            // Re-initialise batch operation
            bulk = collection.initializeOrderedBulkOp();
          }*/);
          print('Mongeez: migrated ' + counter + ' documents.');
          // Re-initialise batch operation
          bulk = collection.initializeOrderedBulkOp();
        }
      });

      if(counter % 1000 !== 0 ){
        bulk.execute();
      }

      print('Mongeez: migrated ' + counter + ' documents.');
    </script>
  </changeSet>

</mongoChangeLog>