bool RestEdgesHandler::getEdgesForVertex (std::string const& id,
std::vector<traverser::TraverserExpression*> const& expressions,
TRI_edge_direction_e direction,
SingleCollectionReadOnlyTransaction& trx,
triagens::basics::Json& result,
size_t& scannedIndex,
size_t& filtered) {
triagens::arango::traverser::VertexId start;
try {
start = triagens::arango::traverser::IdStringToVertexId (
trx.resolver(),
id
);
}
catch (triagens::basics::Exception& e) {
handleError(e);
return false;
}
TRI_document_collection_t* docCol = trx.trxCollection()->_collection->_collection;
std::vector<TRI_doc_mptr_copy_t>&& edges = TRI_LookupEdgesDocumentCollection(
docCol,
direction,
start.cid,
const_cast<char*>(start.key)
);
// generate result
result.reserve(edges.size());
scannedIndex += edges.size();
if (expressions.empty()) {
for (auto& e : edges) {
DocumentAccessor da(trx.resolver(), docCol, &e);
result.add(da.toJson());
}
}
else {
for (auto& e : edges) {
bool add = true;
// Expressions symbolize an and, so all have to be matched
for (auto& exp : expressions) {
if (exp->isEdgeAccess && ! exp->matchesCheck(e, docCol, trx.resolver())) {
++filtered;
add = false;
break;
}
}
if (add) {
DocumentAccessor da(trx.resolver(), docCol, &e);
result.add(da.toJson());
}
}
}
return true;
}
