Ejemplo n.º 1
0
static grn_obj *
proc_column_create(grn_ctx *ctx, int nargs, grn_obj **args, grn_user_data *user_data)
{
    uint32_t nvars;
    grn_obj *buf = args[0];
    grn_expr_var *vars;
    grn_proc_get_info(ctx, user_data, &vars, &nvars, NULL);
    if (nvars == 6) {
        grn_obj_flags flags = grn_atoi(GRN_TEXT_VALUE(&vars[2].value),
                                       GRN_BULK_CURR(&vars[2].value), NULL);
        grn_obj *column, *table = grn_ctx_get(ctx, GRN_TEXT_VALUE(&vars[0].value),
                                              GRN_TEXT_LEN(&vars[0].value));
        grn_obj *type = grn_ctx_get(ctx, GRN_TEXT_VALUE(&vars[3].value),
                                    GRN_TEXT_LEN(&vars[3].value));
        if (GRN_TEXT_LEN(&vars[1].value)) {
            flags |= GRN_OBJ_PERSISTENT;
        }
        column = grn_column_create(ctx, table,
                                   GRN_TEXT_VALUE(&vars[1].value),
                                   GRN_TEXT_LEN(&vars[1].value),
                                   NULL, flags, type);
        if (column) {
            if (GRN_TEXT_LEN(&vars[4].value)) {
                grn_obj sources, source_ids, **p, **pe;
                GRN_PTR_INIT(&sources, GRN_OBJ_VECTOR, GRN_ID_NIL);
                GRN_UINT32_INIT(&source_ids, GRN_OBJ_VECTOR);
                grn_obj_columns(ctx, type,
                                GRN_TEXT_VALUE(&vars[4].value),
                                GRN_TEXT_LEN(&vars[4].value),
                                &sources);
                p = (grn_obj **)GRN_BULK_HEAD(&sources);
                pe = (grn_obj **)GRN_BULK_CURR(&sources);
                while (p < pe) {
                    grn_id source_id = grn_obj_id(ctx, *p++);
                    if (source_id) {
                        GRN_UINT32_PUT(ctx, &source_ids, source_id);
                    }
                }
                if (GRN_BULK_VSIZE(&source_ids)) {
                    grn_obj_set_info(ctx, column, GRN_INFO_SOURCE, &source_ids);
                }
                GRN_OBJ_FIN(ctx, &source_ids);
                GRN_OBJ_FIN(ctx, &sources);
            }
            grn_obj_unlink(ctx, column);
        }
        GRN_TEXT_PUTS(ctx, buf, ctx->rc ? "false" : "true");
    }
    return buf;
}
Ejemplo n.º 2
0
static void
brace_close(grn_ctx *ctx, grn_loader *loader)
{
  grn_id id = GRN_ID_NIL;
  grn_obj *value, *value_begin, *value_end;
  grn_obj *id_value = NULL, *key_value = NULL;
  uint32_t begin;

  GRN_UINT32_POP(&loader->level, begin);
  value_begin = (grn_obj *)GRN_TEXT_VALUE(&loader->values) + begin;
  value_end = (grn_obj *)GRN_TEXT_VALUE(&loader->values) + loader->values_size;
  GRN_ASSERT(value->header.domain == GRN_JSON_LOAD_OPEN_BRACE);
  GRN_UINT32_SET(ctx, value_begin, loader->values_size - begin - 1);
  value_begin++;
  if (GRN_BULK_VSIZE(&loader->level) > sizeof(uint32_t) * loader->emit_level) {
    return;
  }
  if (!loader->table) {
    goto exit;
  }

  /* Scan values to find _id or _key. */
  for (value = value_begin; value + 1 < value_end;
       value = values_next(ctx, value)) {
    const char *name = GRN_TEXT_VALUE(value);
    unsigned int name_size = GRN_TEXT_LEN(value);
    if (value->header.domain != GRN_DB_TEXT) {
      grn_obj buffer;
      GRN_TEXT_INIT(&buffer, 0);
      grn_inspect(ctx, &buffer, value);
      GRN_LOG(ctx, GRN_LOG_ERROR,
              "column name must be string: <%.*s>",
              (int)GRN_TEXT_LEN(&buffer), GRN_TEXT_VALUE(&buffer));
      GRN_OBJ_FIN(ctx, &buffer);
      goto exit;
    }
    value++;
    if (name_equal(name, name_size, GRN_COLUMN_NAME_ID)) {
      if (id_value || key_value) {
        if (loader->table->header.type == GRN_TABLE_NO_KEY) {
          GRN_LOG(ctx, GRN_LOG_ERROR, "duplicated '_id' column");
          goto exit;
        } else {
          GRN_LOG(ctx, GRN_LOG_ERROR,
                  "duplicated key columns: %s and %s",
                  id_value ? GRN_COLUMN_NAME_ID : GRN_COLUMN_NAME_KEY,
                  GRN_COLUMN_NAME_ID);
          goto exit;
        }
      }
      id_value = value;
    } else if (name_equal(name, name_size, GRN_COLUMN_NAME_KEY)) {
      if (id_value || key_value) {
        GRN_LOG(ctx, GRN_LOG_ERROR,
                "duplicated key columns: %s and %s",
                id_value ? GRN_COLUMN_NAME_ID : GRN_COLUMN_NAME_KEY,
                GRN_COLUMN_NAME_KEY);
        goto exit;
      }
      key_value = value;
    }
  }

  switch (loader->table->header.type) {
  case GRN_TABLE_HASH_KEY :
  case GRN_TABLE_PAT_KEY :
  case GRN_TABLE_DAT_KEY :
    /* The target table requires _id or _key. */
    if (!id_value && !key_value) {
      GRN_LOG(ctx, GRN_LOG_ERROR, "neither _key nor _id is assigned");
      goto exit;
    }
    break;
  default :
    /* The target table does not have _key. */
    if (key_value) {
      GRN_LOG(ctx, GRN_LOG_ERROR, "nonexistent key value");
      goto exit;
    }
    break;
  }

  if (id_value) {
    id = parse_id_value(ctx, id_value);
    if (grn_table_at(ctx, loader->table, id) == GRN_ID_NIL) {
      if (ctx->rc == GRN_SUCCESS) {
        id = grn_table_add(ctx, loader->table, NULL, 0, NULL);
      }
    }
  } else if (key_value) {
    id = loader_add(ctx, key_value);
  } else {
    id = grn_table_add(ctx, loader->table, NULL, 0, NULL);
  }
  if (id == GRN_ID_NIL) {
    /* Target record is not available. */
    goto exit;
  }

  for (value = value_begin; value + 1 < value_end;
       value = values_next(ctx, value)) {
    grn_obj *col;
    const char *name = GRN_TEXT_VALUE(value);
    unsigned int name_size = GRN_TEXT_LEN(value);
    value++;
    if (value == id_value || value == key_value) {
      /* Skip _id and _key, because it's already used to get id. */
      continue;
    }
    col = grn_obj_column(ctx, loader->table, name, name_size);
    if (!col) {
      GRN_LOG(ctx, GRN_LOG_ERROR, "invalid column('%.*s')",
              (int)name_size, name);
      /* Automatic column creation is disabled. */
      /*
      if (value->header.domain == GRN_JSON_LOAD_OPEN_BRACKET) {
        grn_obj *v = value + 1;
        col = grn_column_create(ctx, loader->table, name, name_size,
                                NULL, GRN_OBJ_PERSISTENT|GRN_OBJ_COLUMN_VECTOR,
                                grn_ctx_at(ctx, v->header.domain));
      } else {
        col = grn_column_create(ctx, loader->table, name, name_size,
                                NULL, GRN_OBJ_PERSISTENT,
                                grn_ctx_at(ctx, value->header.domain));
      }
      */
    } else {
      if (value->header.domain == GRN_JSON_LOAD_OPEN_BRACKET) {
        set_vector(ctx, col, id, value);
      } else if (value->header.domain == GRN_JSON_LOAD_OPEN_BRACE) {
        set_weight_vector(ctx, col, id, value);
      } else {
        grn_obj_set_value(ctx, col, id, value, GRN_OBJ_SET);
      }
      if (ctx->rc != GRN_SUCCESS) {
        grn_loader_save_error(ctx, loader);
        report_set_column_value_failure(ctx, key_value,
                                        name, name_size, value);
        loader->n_column_errors++;
        ERRCLR(ctx);
      }
      grn_obj_unlink(ctx, col);
    }
  }
  if (loader->each) {
    value = grn_expr_get_var_by_offset(ctx, loader->each, 0);
    GRN_RECORD_SET(ctx, value, id);
    grn_expr_exec(ctx, loader->each, 0);
  }
  loader->nrecords++;
exit:
  if (ctx->rc != GRN_SUCCESS) {
    loader->n_record_errors++;
  }
  if (loader->output_ids) {
    GRN_UINT32_PUT(ctx, &(loader->ids), id);
  }
  if (loader->output_errors) {
    GRN_INT32_PUT(ctx, &(loader->return_codes), ctx->rc);
    grn_vector_add_element(ctx,
                           &(loader->error_messages),
                           ctx->errbuf,
                           strlen(ctx->errbuf),
                           0,
                           GRN_DB_TEXT);
  }
  loader->values_size = begin;
  ERRCLR(ctx);
}
Ejemplo n.º 3
0
static void
bracket_close(grn_ctx *ctx, grn_loader *loader)
{
  grn_id id = GRN_ID_NIL;
  grn_obj *value, *value_end, *id_value = NULL, *key_value = NULL;
  grn_obj *col, **cols; /* Columns except _id and _key. */
  uint32_t i, begin;
  uint32_t ncols;   /* Number of columns except _id and _key. */
  uint32_t nvalues; /* Number of values in brackets. */
  uint32_t depth;
  grn_bool is_record_load = GRN_FALSE;

  cols = (grn_obj **)GRN_BULK_HEAD(&loader->columns);
  ncols = GRN_BULK_VSIZE(&loader->columns) / sizeof(grn_obj *);
  GRN_UINT32_POP(&loader->level, begin);
  value = (grn_obj *)GRN_TEXT_VALUE(&loader->values) + begin;
  value_end = (grn_obj *)GRN_TEXT_VALUE(&loader->values) + loader->values_size;
  GRN_ASSERT(value->header.domain == GRN_JSON_LOAD_OPEN_BRACKET);
  GRN_UINT32_SET(ctx, value, loader->values_size - begin - 1);
  value++;
  depth = GRN_BULK_VSIZE(&loader->level);
  if (depth > sizeof(uint32_t) * loader->emit_level) {
    return;
  }
  if (depth == 0 || !loader->table ||
      loader->columns_status == GRN_LOADER_COLUMNS_BROKEN) {
    goto exit;
  }
  nvalues = values_len(ctx, value, value_end);

  if (loader->columns_status == GRN_LOADER_COLUMNS_UNSET) {
    /*
     * Target columns and _id or _key are not specified yet and values are
     * handled as column names and "_id" or "_key".
     */
    for (i = 0; i < nvalues; i++) {
      const char *col_name;
      unsigned int col_name_size;
      if (value->header.domain != GRN_DB_TEXT) {
        grn_obj buffer;
        GRN_TEXT_INIT(&buffer, 0);
        grn_inspect(ctx, &buffer, value);
        ERR(GRN_INVALID_ARGUMENT,
            "column name must be string: <%.*s>",
            (int)GRN_TEXT_LEN(&buffer), GRN_TEXT_VALUE(&buffer));
        grn_loader_save_error(ctx, loader);
        GRN_OBJ_FIN(ctx, &buffer);
        loader->columns_status = GRN_LOADER_COLUMNS_BROKEN;
        goto exit;
      }
      col_name = GRN_TEXT_VALUE(value);
      col_name_size = GRN_TEXT_LEN(value);
      col = grn_obj_column(ctx, loader->table, col_name, col_name_size);
      if (!col) {
        ERR(GRN_INVALID_ARGUMENT, "nonexistent column: <%.*s>",
            col_name_size, col_name);
        grn_loader_save_error(ctx, loader);
        loader->columns_status = GRN_LOADER_COLUMNS_BROKEN;
        goto exit;
      }
      if (name_equal(col_name, col_name_size, GRN_COLUMN_NAME_ID)) {
        grn_obj_unlink(ctx, col);
        if (loader->id_offset != -1 || loader->key_offset != -1) {
          /* _id and _key must not appear more than once. */
          if (loader->id_offset != -1) {
            ERR(GRN_INVALID_ARGUMENT,
                "duplicated id and key columns: <%s> at %d and <%s> at %d",
                GRN_COLUMN_NAME_ID, i,
                GRN_COLUMN_NAME_ID, loader->id_offset);
          } else {
            ERR(GRN_INVALID_ARGUMENT,
                "duplicated id and key columns: <%s> at %d and <%s> at %d",
                GRN_COLUMN_NAME_ID, i,
                GRN_COLUMN_NAME_KEY, loader->key_offset);
          }
          grn_loader_save_error(ctx, loader);
          loader->columns_status = GRN_LOADER_COLUMNS_BROKEN;
          goto exit;
        }
        loader->id_offset = i;
      } else if (name_equal(col_name, col_name_size, GRN_COLUMN_NAME_KEY)) {
        grn_obj_unlink(ctx, col);
        if (loader->id_offset != -1 || loader->key_offset != -1) {
          /* _id and _key must not appear more than once. */
          if (loader->id_offset != -1) {
            ERR(GRN_INVALID_ARGUMENT,
                "duplicated id and key columns: <%s> at %d and <%s> at %d",
                GRN_COLUMN_NAME_KEY, i,
                GRN_COLUMN_NAME_ID, loader->id_offset);
          } else {
            ERR(GRN_INVALID_ARGUMENT,
                "duplicated id and key columns: <%s> at %d and <%s> at %d",
                GRN_COLUMN_NAME_KEY, i,
                GRN_COLUMN_NAME_KEY, loader->key_offset);
          }
          grn_loader_save_error(ctx, loader);
          loader->columns_status = GRN_LOADER_COLUMNS_BROKEN;
          goto exit;
        }
        loader->key_offset = i;
      } else {
        GRN_PTR_PUT(ctx, &loader->columns, col);
      }
      value++;
    }
    switch (loader->table->header.type) {
    case GRN_TABLE_HASH_KEY :
    case GRN_TABLE_PAT_KEY :
    case GRN_TABLE_DAT_KEY :
      if (loader->id_offset == -1 && loader->key_offset == -1) {
        ERR(GRN_INVALID_ARGUMENT, "missing id or key column");
        grn_loader_save_error(ctx, loader);
        loader->columns_status = GRN_LOADER_COLUMNS_BROKEN;
        goto exit;
      }
      break;
    }
    loader->columns_status = GRN_LOADER_COLUMNS_SET;
    goto exit;
  }

  is_record_load = GRN_TRUE;

  /* Target columns and _id or _key are already specified. */
  if (!nvalues) {
    /*
     * Accept empty arrays because a dump command may output a load command
     * which contains empty arrays for a table with deleted records.
     */
    id = grn_table_add(ctx, loader->table, NULL, 0, NULL);
  } else {
    uint32_t expected_nvalues = ncols;
    if (loader->id_offset != -1 || loader->key_offset != -1) {
      expected_nvalues++;
    }
    if (nvalues != expected_nvalues) {
      ERR(GRN_INVALID_ARGUMENT,
          "unexpected #values: expected:%u, actual:%u",
          expected_nvalues, nvalues);
      grn_loader_save_error(ctx, loader);
      goto exit;
    }
    if (loader->id_offset != -1) {
      id_value = value + loader->id_offset;
      id = parse_id_value(ctx, id_value);
      if (grn_table_at(ctx, loader->table, id) == GRN_ID_NIL) {
        id = grn_table_add(ctx, loader->table, NULL, 0, NULL);
      }
    } else if (loader->key_offset != -1) {
      key_value = value + loader->key_offset;
      id = loader_add(ctx, key_value);
    } else {
      id = grn_table_add(ctx, loader->table, NULL, 0, NULL);
    }
  }
  if (id == GRN_ID_NIL) {
    /* Target record is not available. */
    goto exit;
  }

  for (i = 0; i < nvalues; i++, value = values_next(ctx, value)) {
    if (i == loader->id_offset || i == loader->key_offset) {
       /* Skip _id and _key, because it's already used to get id. */
       continue;
    }
    col = *cols;
    if (value->header.domain == GRN_JSON_LOAD_OPEN_BRACKET) {
      set_vector(ctx, col, id, value);
    } else if (value->header.domain == GRN_JSON_LOAD_OPEN_BRACE) {
      set_weight_vector(ctx, col, id, value);
    } else {
      grn_obj_set_value(ctx, col, id, value, GRN_OBJ_SET);
    }
    if (ctx->rc != GRN_SUCCESS) {
      char column_name[GRN_TABLE_MAX_KEY_SIZE];
      unsigned int column_name_size;
      grn_loader_save_error(ctx, loader);
      column_name_size = grn_obj_name(ctx, col, column_name,
                                      GRN_TABLE_MAX_KEY_SIZE);
      report_set_column_value_failure(ctx, key_value,
                                      column_name, column_name_size,
                                      value);
      loader->n_column_errors++;
      ERRCLR(ctx);
    }
    cols++;
  }
  if (loader->each) {
    grn_obj *v = grn_expr_get_var_by_offset(ctx, loader->each, 0);
    GRN_RECORD_SET(ctx, v, id);
    grn_expr_exec(ctx, loader->each, 0);
  }
  loader->nrecords++;
exit:
  if (is_record_load) {
    if (ctx->rc != GRN_SUCCESS) {
      loader->n_record_errors++;
    }
    if (loader->output_ids) {
      GRN_UINT32_PUT(ctx, &(loader->ids), id);
    }
    if (loader->output_errors) {
      GRN_INT32_PUT(ctx, &(loader->return_codes), ctx->rc);
      grn_vector_add_element(ctx,
                             &(loader->error_messages),
                             ctx->errbuf,
                             strlen(ctx->errbuf),
                             0,
                             GRN_DB_TEXT);
    }
  }
  loader->values_size = begin;
  ERRCLR(ctx);
}
Ejemplo n.º 4
0
static void
set_vector(grn_ctx *ctx, grn_obj *column, grn_id id, grn_obj *vector)
{
  int n = GRN_UINT32_VALUE(vector);
  grn_obj buf, *v = vector + 1;
  grn_id range_id;
  grn_obj *range;

  range_id = DB_OBJ(column)->range;
  range = grn_ctx_at(ctx, range_id);
  if (grn_obj_is_table(ctx, range)) {
    GRN_RECORD_INIT(&buf, GRN_OBJ_VECTOR, range_id);
    while (n--) {
      grn_bool cast_failed = GRN_FALSE;
      grn_obj record, *element = v;
      if (range_id != element->header.domain) {
        GRN_RECORD_INIT(&record, 0, range_id);
        if (grn_obj_cast(ctx, element, &record, GRN_TRUE)) {
          cast_failed = GRN_TRUE;
          ERR_CAST(column, range, element);
        }
        element = &record;
      }
      if (!cast_failed) {
        GRN_UINT32_PUT(ctx, &buf, GRN_RECORD_VALUE(element));
      }
      if (element == &record) { GRN_OBJ_FIN(ctx, element); }
      v = values_next(ctx, v);
    }
  } else {
    if (((struct _grn_type *)range)->obj.header.flags & GRN_OBJ_KEY_VAR_SIZE) {
      GRN_TEXT_INIT(&buf, GRN_OBJ_VECTOR);
      while (n--) {
        switch (v->header.domain) {
        case GRN_DB_TEXT :
        {
          grn_bool cast_failed = GRN_FALSE;
          grn_obj casted_element, *element = v;
          if (range_id != element->header.domain) {
            GRN_OBJ_INIT(&casted_element, GRN_BULK, 0, range_id);
            if (grn_obj_cast(ctx, element, &casted_element, GRN_TRUE)) {
              cast_failed = GRN_TRUE;
              ERR_CAST(column, range, element);
            }
            element = &casted_element;
          }
          if (!cast_failed) {
            grn_vector_add_element(ctx, &buf,
                                   GRN_TEXT_VALUE(element),
                                   GRN_TEXT_LEN(element),
                                   0,
                                   element->header.domain);
          }
          if (element == &casted_element) { GRN_OBJ_FIN(ctx, element); }
          break;
        }
        case GRN_JSON_LOAD_OPEN_BRACE :
          add_weight_vector(ctx, column, v, &buf);
          n -= GRN_UINT32_VALUE(v);
          break;
        default :
          ERR(GRN_INVALID_ARGUMENT, "array must contain string or object");
          break;
        }
        v = values_next(ctx, v);
      }
    } else {
      grn_id value_size = ((grn_db_obj *)range)->range;
      GRN_VALUE_FIX_SIZE_INIT(&buf, GRN_OBJ_VECTOR, range_id);
      while (n--) {
        grn_bool cast_failed = GRN_FALSE;
        grn_obj casted_element, *element = v;
        if (range_id != element->header.domain) {
          GRN_OBJ_INIT(&casted_element, GRN_BULK, 0, range_id);
          if (grn_obj_cast(ctx, element, &casted_element, GRN_TRUE)) {
            cast_failed = GRN_TRUE;
            ERR_CAST(column, range, element);
          }
          element = &casted_element;
        }
        if (!cast_failed) {
          grn_bulk_write(ctx, &buf, GRN_TEXT_VALUE(element), value_size);
        }
        if (element == &casted_element) { GRN_OBJ_FIN(ctx, element); }
        v = values_next(ctx, v);
      }
    }
  }
  grn_obj_set_value(ctx, column, id, &buf, GRN_OBJ_SET);
  GRN_OBJ_FIN(ctx, &buf);
}
Ejemplo n.º 5
0
static void
grn_text_atoj(grn_ctx *ctx, grn_obj *outbuf, grn_content_type output_type,
              grn_obj *obj, grn_id id)
{
  int vs;
  grn_obj buf;
  if (obj->header.type == GRN_ACCESSOR) {
    grn_accessor *a = (grn_accessor *)obj;
    GRN_TEXT_INIT(&buf, 0);
    for (;;) {
      buf.header.domain = grn_obj_get_range(ctx, obj);
      GRN_BULK_REWIND(&buf);
      switch (a->action) {
      case GRN_ACCESSOR_GET_ID :
        GRN_UINT32_PUT(ctx, &buf, id);
        buf.header.domain = GRN_DB_UINT32;
        break;
      case GRN_ACCESSOR_GET_KEY :
        grn_table_get_key2(ctx, a->obj, id, &buf);
        buf.header.domain = DB_OBJ(a->obj)->header.domain;
        break;
      case GRN_ACCESSOR_GET_VALUE :
        grn_obj_get_value(ctx, a->obj, id, &buf);
        buf.header.domain = GRN_DB_INT32; /* fix me */
        break;
      case GRN_ACCESSOR_GET_SCORE :
        grn_obj_get_value(ctx, a->obj, id, &buf);
        {
          grn_rset_recinfo *ri = (grn_rset_recinfo *)grn_obj_get_value_(ctx, a->obj, id, &vs);
          GRN_INT32_PUT(ctx, &buf, ri->score);
        }
        buf.header.domain = GRN_DB_INT32;
        break;
      case GRN_ACCESSOR_GET_NSUBRECS :
        {
          grn_rset_recinfo *ri = (grn_rset_recinfo *)grn_obj_get_value_(ctx, a->obj, id, &vs);
          GRN_INT32_PUT(ctx, &buf, ri->n_subrecs);
        }
        buf.header.domain = GRN_DB_INT32;
        break;
      case GRN_ACCESSOR_GET_COLUMN_VALUE :
        if ((a->obj->header.flags & GRN_OBJ_COLUMN_TYPE_MASK) == GRN_OBJ_COLUMN_VECTOR) {
          if (a->next) {
            grn_id *idp;
            grn_obj_get_value(ctx, a->obj, id, &buf);
            idp = (grn_id *)GRN_BULK_HEAD(&buf);
            vs = GRN_BULK_VSIZE(&buf) / sizeof(grn_id);
            grn_output_array_open(ctx, outbuf, output_type, "COLUMN", vs);
            for (; vs--; idp++) {
              grn_text_atoj(ctx, outbuf, output_type, (grn_obj *)a->next, *idp);
            }
            grn_output_array_close(ctx, outbuf, output_type);
          } else {
            grn_text_atoj(ctx, outbuf, output_type, a->obj, id);
          }
          goto exit;
        } else {
          grn_obj_get_value(ctx, a->obj, id, &buf);
        }
        break;
      case GRN_ACCESSOR_GET_DB_OBJ :
        /* todo */
        break;
      case GRN_ACCESSOR_LOOKUP :
        /* todo */
        break;
      case GRN_ACCESSOR_FUNCALL :
        /* todo */
        break;
      }
      if (a->next) {
        a = a->next;
        if (GRN_BULK_VSIZE(&buf) >= sizeof(grn_id)) {
          id = *((grn_id *)GRN_BULK_HEAD(&buf));
        } else {
          id = GRN_ID_NIL;
        }
      } else {
        break;
      }
    }
  } else {
    switch (obj->header.type) {
    case GRN_COLUMN_FIX_SIZE :
      GRN_VALUE_FIX_SIZE_INIT(&buf, 0, DB_OBJ(obj)->range);
      break;
    case GRN_COLUMN_VAR_SIZE :
      if ((obj->header.flags & GRN_OBJ_COLUMN_TYPE_MASK) == GRN_OBJ_COLUMN_VECTOR) {
        grn_obj *range = grn_ctx_at(ctx, DB_OBJ(obj)->range);
        if (range->header.flags & GRN_OBJ_KEY_VAR_SIZE) {
          GRN_VALUE_VAR_SIZE_INIT(&buf, GRN_OBJ_VECTOR, DB_OBJ(obj)->range);
        } else {
          GRN_VALUE_FIX_SIZE_INIT(&buf, GRN_OBJ_VECTOR, DB_OBJ(obj)->range);
        }
      } else {
        GRN_VALUE_VAR_SIZE_INIT(&buf, 0, DB_OBJ(obj)->range);
      }
      break;
    case GRN_COLUMN_INDEX :
      GRN_UINT32_INIT(&buf, 0);
      break;
    default:
      GRN_TEXT_INIT(&buf, 0);
      break;
    }
    grn_obj_get_value(ctx, obj, id, &buf);
  }
  grn_output_obj(ctx, outbuf, output_type, &buf, NULL);
exit :
  grn_obj_close(ctx, &buf);
}