public void addToPartitionOrder(FieldSchema elem) {
    if (this.partitionOrder == null) {
      this.partitionOrder = new java.util.ArrayList<FieldSchema>();
    }
    this.partitionOrder.add(elem);
  }
Returns true if field filter is set (has been assigned a value) and false otherwise
standalone-metastore/metastore-common/src/gen/thrift/gen-javabean/org/apache/hadoop/hive/metastore/api/PartitionValuesRequest.java