public void setFieldValue(_Fields field, @org.apache.thrift.annotation.Nullable java.lang.Object value) {
    switch (field) {
    case EXPR:
      if (value == null) {
        unsetExpr();
      } else {
        if (value instanceof byte[]) {
          setExpr((byte[])value);
        } else {
          setExpr((java.nio.ByteBuffer)value);
        }
      }
      break;

    case PART_ARCHIVE_LEVEL:
      if (value == null) {
        unsetPartArchiveLevel();
      } else {
        setPartArchiveLevel((java.lang.Integer)value);
      }
      break;

    }
  }
Returns true if field partArchiveLevel 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/DropPartitionsExpr.java