public Builder mergeFrom(org.apache.tajo.catalog.proto.CatalogProtos.SortSpecProto other) { if (other == org.apache.tajo.catalog.proto.CatalogProtos.SortSpecProto.getDefaultInstance()) return this; if (other.hasColumn()) { mergeColumn(other.getColumn()); } if (other.hasAscending()) { setAscending(other.getAscending()); } if (other.hasNullFirst()) { setNullFirst(other.getNullFirst()); } this.mergeUnknownFields(other.getUnknownFields()); return this; }