JoshInnis commented on a change in pull request #155: URL: https://github.com/apache/incubator-age/pull/155#discussion_r767032582
########## File path: src/backend/utils/load/ag_load_edges.c ########## @@ -0,0 +1,190 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ + +#include <stdio.h> +#include <string.h> +#include <errno.h> +#include <stdlib.h> +#include <unistd.h> + +#include "utils/load/csv.h" +#include "utils/load/ag_load_edges.h" +#include "utils/load/age_load.h" + + +void edge_field_cb(void *field, size_t field_len, void *data) { + + csv_edge_reader *cr = (csv_edge_reader*)data; + if (cr->error) { + cr->error = 1; + ereport(NOTICE,(errmsg("There is some unknown error"))); + } + + // check for space to store this field + if (cr->cur_field == cr->alloc) { + cr->alloc *= 2; + cr->fields = realloc(cr->fields, sizeof(char *) * cr->alloc); + cr->fields_len = realloc(cr->header, sizeof(size_t *) * cr->alloc); + if (cr->fields == NULL) { + cr->error = 1; + ereport(ERROR, + (errmsg("field_cb: failed to reallocate %zu bytes\n", sizeof(char *) * cr->alloc))); + } + } + cr->fields_len[cr->cur_field] = field_len; + cr->curr_row_length += field_len; + cr->fields[cr->cur_field] = strndup((char*)field, field_len); + cr->cur_field += 1; +} + +// Parser calls this function when it detects end of a row +void edge_row_cb(int delim __attribute__((unused)), void *data) { + + csv_edge_reader *cr = (csv_edge_reader*)data; + + size_t i, n_fields; + int64 start_id_int; + graphid start_vertex_graph_id; + int start_vertex_type_id; + + int64 end_id_int; + graphid end_vertex_graph_id; + int end_vertex_type_id; + + graphid object_graph_id; + + agtype* props = NULL; + + n_fields = cr->cur_field; + + if (cr->row == 0) { + cr->header_num = cr->cur_field; + cr->header_row_length = cr->curr_row_length; + cr->header_len = (size_t* )malloc(sizeof(size_t *) * cr->cur_field); + cr->header = malloc((sizeof (char*) * cr->cur_field)); + + for ( i = 0; i<cr->cur_field; i++) { + cr->header_len[i] = cr->fields_len[i]; + cr->header[i] = strndup(cr->fields[i], cr->header_len[i]); + } + } else { + object_graph_id = make_graphid(cr->object_id, (int64)cr->row); + + start_id_int = strtol(cr->fields[0], NULL, 10); + start_vertex_type_id = get_label_id(cr->fields[1], cr->graph_id); + end_id_int = strtol(cr->fields[2], NULL, 10); + end_vertex_type_id = get_label_id(cr->fields[3], cr->graph_id); + + start_vertex_graph_id = make_graphid(start_vertex_type_id, start_id_int); + end_vertex_graph_id = make_graphid(end_vertex_type_id, end_id_int); + + props = create_agtype_from_list_i(cr->header, cr->fields, n_fields, 3); + + insert_edge_simple(cr->graph_id, cr->object_name, object_graph_id, + start_vertex_graph_id, end_vertex_graph_id, props); + + } + + for (i = 0; i < n_fields; ++i) { + free(cr->fields[i]); + } + + if (cr->error) + ereport(NOTICE,(errmsg("THere is some error"))); + + + cr->cur_field = 0; + cr->curr_row_length = 0; + cr->row += 1; +} + +static int is_space(unsigned char c) { + if(c == CSV_SPACE || c == CSV_TAB) return 1; + return 0; +} + +/* Review comment: This should be removed -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
