GitHub user Agwave edited a discussion: fail to run example
high_level_writer_example
It is ok to Build with examples and then run high_level_writer_example.
But when I create a new project and imitate the code of
high_level_writer_example.
The running result is：
Vertices builder
vertex_count=3
dump vertices collection successfully!
Edges builder
Assertion failed in "/home/chenyinbo/cppject/graphar-example/main-temp.cpp",
line 76
Probable bug in software.
I have observed the generated folder and there is no problem on vertex file
How to find where the problem lies（why it is fail to build edge）
————————————————
main-temp.cpp
```
#include <iostream>
#include "arrow/api.h"
#include "arrow/filesystem/api.h"
#include "./config.h"
#include "gar/api.h"
#include "gar/writer/edges_builder.h"
#include "gar/writer/vertices_builder.h"
void vertices_builder() {
// construct vertices builder
std::string vertex_meta_file =
"/home/chenyinbo/cppject/graphar-example/person.vertex.yml";
auto vertex_meta = graphar::Yaml::LoadFile(vertex_meta_file).value();
auto vertex_info = graphar::VertexInfo::Load(vertex_meta).value();
graphar::IdType start_index = 0;
graphar::builder::VerticesBuilder builder(vertex_info,
"/home/chenyinbo/cppject/graphar-example/generate-temp/", start_index);
// set validate level
builder.SetValidateLevel(graphar::ValidateLevel::strong_validate);
// prepare vertex data
int vertex_count = 3;
std::vector<std::string> property_names = {"id", "firstName", "lastName",
"gender"};
std::vector<int64_t> id = {0, 1, 2};
std::vector<std::string> firstName = {"John", "Jane", "Alice"};
std::vector<std::string> lastName = {"Smith", "Doe", "Wonderland"};
std::vector<std::string> gender = {"male", "famale", "famale"};
// add vertices
for (int i = 0; i < vertex_count; i++) {
graphar::builder::Vertex v;
v.AddProperty(property_names[0], id[i]);
v.AddProperty(property_names[1], firstName[i]);
v.AddProperty(property_names[2], lastName[i]);
v.AddProperty(property_names[3], gender[i]);
ASSERT(builder.AddVertex(v).ok());
}
// dump
ASSERT(builder.GetNum() == vertex_count);
std::cout << "vertex_count=" << builder.GetNum() << std::endl;
ASSERT(builder.Dump().ok());
std::cout << "dump vertices collection successfully!" << std::endl;
// clear vertices
builder.Clear();
ASSERT(builder.GetNum() == 0);
}
void edges_builder() {
// construct edges builder
std::string edge_meta_file =
"/home/chenyinbo/cppject/graphar-example/person_knows_person.edge.yml";
auto edge_meta = graphar::Yaml::LoadFile(edge_meta_file).value();
auto edge_info = graphar::EdgeInfo::Load(edge_meta).value();
auto vertex_count = 3;
graphar::builder::EdgesBuilder builder(
edge_info,
"/home/chenyinbo/cppject/graphar-example/generate-temp/",
graphar::AdjListType::ordered_by_dest, vertex_count);
// set validate level
builder.SetValidateLevel(graphar::ValidateLevel::strong_validate);
// prepare edge data
int edge_count = 4;
std::vector<std::string> property_names = {"creationDate"};
std::vector<int64_t> src = {1, 0, 0, 2};
std::vector<int64_t> dst = {0, 1, 2, 1};
std::vector<std::string> creationDate = {"2010-01-01", "2011-01-01",
"2012-01-01", "2013-01-01"};
// add edges
for (int i = 0; i < edge_count; i++) {
graphar::builder::Edge e(src[i], dst[i]);
e.AddProperty("creationDate", creationDate[i]);
ASSERT(builder.AddEdge(e).ok());
}
// dump
ASSERT(builder.GetNum() == edge_count);
std::cout << "edge_count=" << builder.GetNum() << std::endl;
ASSERT(builder.Dump().ok());
std::cout << "dump edges collection successfully!" << std::endl;
// clear edges
builder.Clear();
ASSERT(builder.GetNum() == 0);
}
int main(int argc, char* argv[]) {
// vertices builder
std::cout << "Vertices builder" << std::endl;
std::cout << "-------------------" << std::endl;
vertices_builder();
std::cout << std::endl;
// edges builder
std::cout << "Edges builder" << std::endl;
std::cout << "----------------" << std::endl;
edges_builder();
}
```
GitHub link: https://github.com/apache/incubator-graphar/discussions/457
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