mage/cpp/create_module/algorithm/create.cpp at main · memgraph/mage · GitHub

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#include "create.hpp"

namespace {

void ThrowException(const mgp::Value &value) {

std::ostringstream oss;

oss << value.Type();

throw mgp::ValueException("Unsupported type for this operation, received type: " + oss.str());

}

void DeleteAndOutput(mgp::Relationship &relationship, const mgp::List &keys, const mgp::RecordFactory &record_factory) {

for (const auto &key : keys) {

relationship.RemoveProperty(std::string(key.ValueString()));

}

auto record = record_factory.NewRecord();

record.Insert(std::string(Create::kResultRemoveRelProperties).c_str(), relationship);

}

void ModifyAndOutput(mgp::Relationship &relationship, const mgp::List &keys, const mgp::List &values,

const mgp::RecordFactory &record_factory) {

auto it1 = keys.begin();

auto it2 = values.begin();

while (it1 != keys.end() && it2 != values.end()) {

relationship.SetProperty(std::string((*it1).ValueString()), *it2);

++it1;

++it2;

}

auto record = record_factory.NewRecord();

record.Insert(std::string(Create::kResultSetRelProperties).c_str(), relationship);

}

} // namespace

void Create::RemoveRelProperties(mgp_list *args, mgp_graph *memgraph_graph, mgp_result *result, mgp_memory *memory) {

mgp::MemoryDispatcherGuard guard{memory};

const auto arguments = mgp::List(args);

const auto record_factory = mgp::RecordFactory(result);

try {

mgp::Graph graph{memgraph_graph};

const auto keys{arguments[1].ValueList()};

std::unordered_set<int64_t> ids;

auto ProcessValue = [&](const mgp::Value &value) {

if (value.IsRelationship()) {

auto relationship_copy = value.ValueRelationship();

DeleteAndOutput(relationship_copy, keys, record_factory);

} else if (value.IsInt()) {

ids.insert(value.ValueInt());

} else {

ThrowException(value);

}

};

if (!arguments[0].IsList()) {

ProcessValue(arguments[0]);

} else {

for (const auto &list_item : arguments[0].ValueList()) {

ProcessValue(list_item);

}

if (ids.empty()) {

return;

}

for (auto relationship : graph.Relationships()) {

if (ids.contains(relationship.Id().AsInt())) {

DeleteAndOutput(relationship, keys, record_factory);

}

} catch (const std::exception &e) {

record_factory.SetErrorMessage(e.what());

return;

}

void Create::SetRelProperties(mgp_list *args, mgp_graph *memgraph_graph, mgp_result *result, mgp_memory *memory) {

mgp::MemoryDispatcherGuard guard{memory};

const auto arguments = mgp::List(args);

const auto record_factory = mgp::RecordFactory(result);

try {

mgp::Graph graph{memgraph_graph};

const auto keys{arguments[1].ValueList()};

const auto values{arguments[2].ValueList()};

if (keys.Size() != values.Size()) {

throw mgp::IndexException("Keys and values are not the same size");

}

std::unordered_set<int64_t> ids;

auto ProcessValue = [&](const mgp::Value &value) {

if (value.IsRelationship()) {

auto relationship_copy = value.ValueRelationship();

ModifyAndOutput(relationship_copy, keys, values, record_factory);

} else if (value.IsInt()) {

ids.insert(value.ValueInt());

} else {

ThrowException(value);

}

};

if (!arguments[0].IsList()) {

ProcessValue(arguments[0]);

} else {

for (const auto &list_item : arguments[0].ValueList()) {

ProcessValue(list_item);

}

if (ids.empty()) {

return;

}

for (auto relationship : graph.Relationships()) {

if (ids.contains(relationship.Id().AsInt())) {

ModifyAndOutput(relationship, keys, values, record_factory);

}

} catch (const std::exception &e) {

record_factory.SetErrorMessage(e.what());

return;

}

void Create::Relationship(mgp_list *args, mgp_graph *memgraph_graph, mgp_result *result, mgp_memory *memory) {

mgp::MemoryDispatcherGuard guard{memory};

const auto arguments = mgp::List(args);

const auto record_factory = mgp::RecordFactory(result);

try {

auto node_from{arguments[0].ValueNode()};

const auto relationship_type{arguments[1].ValueString()};

const auto properties{arguments[2].ValueMap()};

auto node_to{arguments[3].ValueNode()};

mgp::Graph graph{memgraph_graph};

auto relationship = graph.CreateRelationship(node_from, node_to, relationship_type);

for (const auto &map_item : properties) {

relationship.SetProperty(std::string(map_item.key), map_item.value);

}

auto record = record_factory.NewRecord();

record.Insert(std::string(kResultRelationship).c_str(), relationship);

} catch (const std::exception &e) {

record_factory.SetErrorMessage(e.what());

return;

}

void Create::SetElementProp(mgp::Relationship &element, const mgp::List &prop_key_list,

const mgp::List &prop_value_list, const mgp::RecordFactory &record_factory) {

for (size_t i = 0; i < prop_key_list.Size(); i++) {

element.SetProperty(std::string(prop_key_list[i].ValueString()), prop_value_list[i]);

auto record = record_factory.NewRecord();

record.Insert(std::string(kResultRelProp).c_str(), std::move(element));

}

void Create::ProcessElement(const mgp::Value &element, const mgp::Graph graph, const mgp::List &prop_key_list,

const mgp::List &prop_value_list, const mgp::RecordFactory &record_factory,

std::unordered_set<mgp::Id> &relIds) {

if (!(element.IsRelationship() || element.IsInt())) {

throw mgp::ValueException("First argument must be a relationship, id or a list of those.");

}

if (element.IsRelationship()) {

auto rel = element.ValueRelationship();

SetElementProp(rel, prop_key_list, prop_value_list, record_factory);

return;

}

relIds.insert(mgp::Id::FromInt(element.ValueInt()));

}

void Create::SetRelProperty(mgp_list *args, mgp_graph *memgraph_graph, mgp_result *result, mgp_memory *memory) {

mgp::MemoryDispatcherGuard guard{memory};

const auto arguments = mgp::List(args);

const auto graph = mgp::Graph(memgraph_graph);

const auto record_factory = mgp::RecordFactory(result);

try {

mgp::List prop_key_list = mgp::List();

prop_key_list.AppendExtend(arguments[1]);

mgp::List prop_value_list = mgp::List();

prop_value_list.AppendExtend(arguments[2]);

std::unordered_set<mgp::Id> relIds;

if (arguments[0].IsList()) {

for (const auto element : arguments[0].ValueList()) {

ProcessElement(element, graph, prop_key_list, prop_value_list, record_factory, relIds);

}

} else {

ProcessElement(arguments[0], graph, prop_key_list, prop_value_list, record_factory, relIds);

}

if (relIds.empty()) {

return;

}

for (auto rel : graph.Relationships()) {

if (relIds.contains(rel.Id())) {

SetElementProp(rel, prop_key_list, prop_value_list, record_factory);

}

} catch (const std::exception &e) {

record_factory.SetErrorMessage(e.what());

return;

}

void Create::RemoveElementProperties(mgp::Node &element, const mgp::List &properties_keys,

const mgp::RecordFactory &record_factory) {

for (auto key : properties_keys) {

std::string key_str(key.ValueString());

element.RemoveProperty(key_str);

}

auto record = record_factory.NewRecord();

record.Insert(std::string(Create::kReturntRemoveProperties).c_str(), element);

}

void Create::RemoveElementLabels(mgp::Node &element, const mgp::List &labels,

const mgp::RecordFactory &record_factory) {

for (auto label : labels) {

element.RemoveLabel(label.ValueString());

}

auto record = record_factory.NewRecord();

record.Insert(std::string(kResultRemoveLabels).c_str(), std::move(element));

}

void Create::ProcessElement(const mgp::Value &element, const mgp::Graph graph, const mgp::List &list_keys,

const bool labels_or_props, const mgp::RecordFactory &record_factory) {

if (!(element.IsNode() || element.IsInt())) {

throw mgp::ValueException("First argument must be type node, id or a list of those.");

}

if (element.IsNode()) {

auto node = element.ValueNode();

if (labels_or_props == 0) {

RemoveElementLabels(node, list_keys, record_factory);

} else {

RemoveElementProperties(node, list_keys, record_factory);

}

return;

}

auto node = graph.GetNodeById(mgp::Id::FromInt(element.ValueInt()));

if (labels_or_props == 0) {

RemoveElementLabels(node, list_keys, record_factory);

} else {

RemoveElementProperties(node, list_keys, record_factory);

}

void Create::RemoveLabels(mgp_list *args, mgp_graph *memgraph_graph, mgp_result *result, mgp_memory *memory) {

mgp::MemoryDispatcherGuard guard{memory};

const auto arguments = mgp::List(args);

const auto graph = mgp::Graph(memgraph_graph);

const auto record_factory = mgp::RecordFactory(result);

try {

const auto labels = arguments[1].ValueList();

if (arguments[0].IsList()) {

for (const auto element : arguments[0].ValueList()) {

ProcessElement(element, graph, labels, 0, record_factory);

}

return;

}

ProcessElement(arguments[0], graph, labels, 0, record_factory);

} catch (const std::exception &e) {

record_factory.SetErrorMessage(e.what());

return;

}

void Create::RemoveProperties(mgp_list *args, mgp_graph *memgraph_graph, mgp_result *result, mgp_memory *memory) {

mgp::MemoryDispatcherGuard guard{memory};

const auto arguments = mgp::List(args);

const auto record_factory = mgp::RecordFactory(result);

try {

mgp::Graph graph = mgp::Graph(memgraph_graph);

const auto list_keys = arguments[1].ValueList();

if (arguments[0].IsList()) {

for (const auto element : arguments[0].ValueList()) {

ProcessElement(element, graph, list_keys, 1, record_factory);

}

return;

}

ProcessElement(arguments[0], graph, list_keys, 1, record_factory);

} catch (const std::exception &e) {

record_factory.SetErrorMessage(e.what());

return;

}

void Create::SetElementProp(mgp::Node &element, const mgp::List &prop_key_list, const mgp::List &prop_value_list,

const mgp::RecordFactory &record_factory) {

for (size_t i = 0; i < prop_key_list.Size(); i++) {

element.SetProperty(std::string(prop_key_list[i].ValueString()), prop_value_list[i]);

auto record = record_factory.NewRecord();

record.Insert(std::string(kResultProperties).c_str(), std::move(element));

}

void Create::ProcessElement(const mgp::Value &element, const mgp::Graph graph, const mgp::List &prop_key_list,

const mgp::List &prop_value_list, const mgp::RecordFactory &record_factory) {

if (element.IsNode()) {

auto node = element.ValueNode();

SetElementProp(node, prop_key_list, prop_value_list, record_factory);

return;

}

if (element.IsInt()) {

auto node = graph.GetNodeById(mgp::Id::FromInt(element.ValueInt()));

SetElementProp(node, prop_key_list, prop_value_list, record_factory);

return;

}

throw mgp::ValueException("First argument must be a node, id or a list of those.");

}

void Create::SetProperties(mgp_list *args, mgp_graph *memgraph_graph, mgp_result *result, mgp_memory *memory) {

mgp::MemoryDispatcherGuard guard{memory};

const auto arguments = mgp::List(args);

const auto graph = mgp::Graph(memgraph_graph);

const auto record_factory = mgp::RecordFactory(result);

try {

const auto prop_key_list = arguments[1].ValueList();

const auto prop_value_list = arguments[2].ValueList();

if (prop_key_list.Size() != prop_value_list.Size()) {

throw mgp::IndexException("Key and value lists must be the same size.");

}

if (!arguments[0].IsList()) {

ProcessElement(arguments[0], graph, prop_key_list, prop_value_list, record_factory);

return;

}

for (const auto element : arguments[0].ValueList()) {

ProcessElement(element, graph, prop_key_list, prop_value_list, record_factory);

}

} catch (const std::exception &e) {

record_factory.SetErrorMessage(e.what());

return;

}

void Create::Node(mgp_list *args, mgp_graph *memgraph_graph, mgp_result *result, mgp_memory *memory) {

mgp::MemoryDispatcherGuard guard{memory};

const auto arguments = mgp::List(args);

auto graph = mgp::Graph(memgraph_graph);

const auto record_factory = mgp::RecordFactory(result);

try {

const auto labels = arguments[0].ValueList();

const auto properties = arguments[1].ValueMap();

mgp::Node node = graph.CreateNode();

for (const auto label : labels) {

node.AddLabel(label.ValueString());

}

for (const auto property : properties) {

node.SetProperty((std::string)property.key, property.value);

}

auto record = record_factory.NewRecord();

record.Insert(std::string(kResultNode).c_str(), std::move(node));

} catch (const std::exception &e) {

record_factory.SetErrorMessage(e.what());

return;

}

void Create::Nodes(mgp_list *args, mgp_graph *memgraph_graph, mgp_result *result, mgp_memory *memory) {

mgp::MemoryDispatcherGuard guard{memory};

const auto arguments = mgp::List(args);

const auto record_factory = mgp::RecordFactory(result);

try {

mgp::Graph graph = mgp::Graph(memgraph_graph);

const mgp::List labels = arguments[0].ValueList();

const mgp::List properties = arguments[1].ValueList();

const int64_t num_of_nodes = properties.Size();

for (auto i = 0; i < num_of_nodes; i++) {

mgp::Node node = graph.CreateNode();

for (auto label : labels) {

node.AddLabel(label.ValueString());

}

const mgp::Map node_properties = properties[i].ValueMap();

for (auto item : node_properties) {

node.SetProperty(std::string(item.key), std::move(item.value));

}

auto record = record_factory.NewRecord();

record.Insert(std::string(Create::kReturnNodes).c_str(), node);

}

} catch (const std::exception &e) {

record_factory.SetErrorMessage(e.what());

return;

}

void Create::SetProperty(mgp_list *args, mgp_graph *memgraph_graph, mgp_result *result, mgp_memory *memory) {

mgp::MemoryDispatcherGuard guard{memory};

const auto arguments = mgp::List(args);

const auto record_factory = mgp::RecordFactory(result);

try {

mgp::Graph graph = mgp::Graph(memgraph_graph);

mgp::List key;

key.AppendExtend(arguments[1]);

mgp::List value;

value.AppendExtend(arguments[2]);

if (!arguments[0].IsList()) {

ProcessElement(arguments[0], graph, key, value, record_factory);

return;

}

for (const auto element : arguments[0].ValueList()) {

ProcessElement(element, graph, key, value, record_factory);

}

} catch (const std::exception &e) {

record_factory.SetErrorMessage(e.what());

return;

}

mage/cpp/create_module/algorithm/create.cpp at main · memgraph/mage · GitHub

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