memgraph/include/query_engine/hardcode/queries.hpp
Kruno Tomola Fabro 5a42e15c4a Alpha version of label indexes.
Squashed messages from 9 commits:

9.
Properties now uses PropertyFamily and contained classes.
Fetching,seting,clearing properties can be done with PropertyFamilyKey or PropertyTypeKey.
Hierarchy of newly added clases is:
Vertices -n-> PropertyFamily {name: String} <-1-n-> PropertyType {type: Property::Flags}
Edges -n-> PropertyFamily {name: String} <-1-n-> PropertyType {type: Property::Flags}

PropertyFamilyKey -> PropertyType
PropertyTypeKey -> PropertyType

PropertyType t0,t1;
let t0!=t1 be true
let t0.family==t1.family be true

then next is true
PropertyTypeKey{&t0}!=PropertyTypeKey{&t1}
PropertyFamilyKey{&t0}==PropertyFamilyKey{&t1}
PropertyFamilyKey{&t0}==PropertyTypeKey{&t1}
PropertyTypeKey{&t0}==PropertyFamilyKey{&t1}

8.
Intermedate commit.
Noticed that integration queries throw SEGFAULT.

7.
Defined interface for indexes.
Fixed three memory leaks.
Fixed integration_queries test which now passes.

6.
Commit which return Xorshift128plus to valid shape.

5.
Tmp commit.

4.
Label Index is compiling.

3.
tmp

2.
Vertex::Accessor now updates Label index.

1.
Applied changes for code review.
2016-08-18 15:34:36 +01:00

231 lines
7.6 KiB
C++

#pragma once
#include "database/db.hpp"
#include "database/db_accessor.cpp"
#include "database/db_accessor.hpp"
#include "query_engine/query_stripper.hpp"
#include "query_engine/util.hpp"
#include "storage/indexes/impl/nonunique_unordered_index.cpp"
#include "storage/model/properties/property.hpp"
#include "storage/model/properties/property_family.hpp"
#include "utils/command_line/arguments.hpp"
#include "utils/iterator/iterator.hpp"
auto load_queries(Db &db)
{
std::map<uint64_t, std::function<bool(const properties_t &)>> queries;
// CREATE (n {prop: 0}) RETURN n)
auto create_node = [&db](const properties_t &args) {
DbAccessor t(db);
auto prop_key = t.vertex_property_family_get("prop")
.get(args[0]->flags)
.family_key();
auto vertex_accessor = t.vertex_insert();
vertex_accessor.set(prop_key, args[0]);
t.commit();
return true;
};
queries[11597417457737499503u] = create_node;
auto create_labeled_and_named_node = [&db](const properties_t &args) {
DbAccessor t(db);
auto prop_key = t.vertex_property_family_get("name")
.get(args[0]->flags)
.family_key();
auto vertex_accessor = t.vertex_insert();
vertex_accessor.set(prop_key, args[0]);
auto &label = t.label_find_or_create("LABEL");
vertex_accessor.add_label(label);
cout_properties(vertex_accessor.properties());
t.commit();
return true;
};
auto create_account = [&db](const properties_t &args) {
DbAccessor t(db);
auto prop_id =
t.vertex_property_family_get("id").get(args[0]->flags).family_key();
auto prop_name = t.vertex_property_family_get("name")
.get(args[1]->flags)
.family_key();
auto prop_country = t.vertex_property_family_get("country")
.get(args[2]->flags)
.family_key();
auto prop_created = t.vertex_property_family_get("created_at")
.get(args[3]->flags)
.family_key();
auto vertex_accessor = t.vertex_insert();
vertex_accessor.set(prop_id, args[0]);
vertex_accessor.set(prop_name, args[1]);
vertex_accessor.set(prop_country, args[2]);
vertex_accessor.set(prop_created, args[3]);
auto &label = t.label_find_or_create("ACCOUNT");
vertex_accessor.add_label(label);
cout_properties(vertex_accessor.properties());
t.commit();
return true;
};
auto find_node_by_internal_id = [&db](const properties_t &args) {
DbAccessor t(db);
auto maybe_va = t.vertex_find(Id(args[0]->as<Int32>().value));
if (!option_fill(maybe_va)) {
cout << "vertex doesn't exist" << endl;
t.commit();
return false;
}
auto vertex_accessor = maybe_va.get();
cout_properties(vertex_accessor.properties());
cout << "LABELS:" << endl;
for (auto label_ref : vertex_accessor.labels()) {
cout << label_ref.get() << endl;
}
t.commit();
return true;
};
auto create_edge = [&db](const properties_t &args) {
DbAccessor t(db);
auto v1 = t.vertex_find(args[0]->as<Int32>().value);
if (!option_fill(v1)) return t.commit(), false;
auto v2 = t.vertex_find(args[1]->as<Int32>().value);
if (!option_fill(v2)) return t.commit(), false;
auto edge_accessor = t.edge_insert(v1.get(), v2.get());
auto &edge_type = t.type_find_or_create("IS");
edge_accessor.edge_type(edge_type);
t.commit();
cout << edge_accessor.edge_type() << endl;
cout_properties(edge_accessor.properties());
return true;
};
auto find_edge_by_internal_id = [&db](const properties_t &args) {
DbAccessor t(db);
auto maybe_ea = t.edge_find(args[0]->as<Int32>().value);
if (!option_fill(maybe_ea)) return t.commit(), false;
auto edge_accessor = maybe_ea.get();
// print edge type and properties
cout << "EDGE_TYPE: " << edge_accessor.edge_type() << endl;
auto from = edge_accessor.from();
if (!from.fill()) return t.commit(), false;
cout << "FROM:" << endl;
cout_properties(from->data.props);
auto to = edge_accessor.to();
if (!to.fill()) return t.commit(), false;
cout << "TO:" << endl;
cout_properties(to->data.props);
t.commit();
return true;
};
auto update_node = [&db](const properties_t &args) {
DbAccessor t(db);
auto prop_name = t.vertex_property_family_get("name")
.get(args[1]->flags)
.family_key();
auto maybe_v = t.vertex_find(args[0]->as<Int32>().value);
if (!option_fill(maybe_v)) return t.commit(), false;
auto v = maybe_v.get();
v.set(prop_name, args[1]);
cout_properties(v.properties());
t.commit();
return true;
};
// MATCH (n1), (n2) WHERE ID(n1)=0 AND ID(n2)=1 CREATE (n1)<-[r:IS {age: 25,
// weight: 70}]-(n2) RETURN r
auto create_edge_v2 = [&db](const properties_t &args) {
DbAccessor t(db);
auto prop_age =
t.edge_property_family_get("age").get(args[2]->flags).family_key();
auto prop_weight = t.edge_property_family_get("weight")
.get(args[3]->flags)
.family_key();
auto n1 = t.vertex_find(args[0]->as<Int64>().value);
if (!option_fill(n1)) return t.commit(), false;
auto n2 = t.vertex_find(args[1]->as<Int64>().value);
if (!option_fill(n2)) return t.commit(), false;
auto r = t.edge_insert(n2.get(), n1.get());
r.set(prop_age, args[2]);
r.set(prop_weight, args[3]);
auto &IS = t.type_find_or_create("IS");
r.edge_type(IS);
t.commit();
return true;
};
queries[15648836733456301916u] = create_edge_v2;
// MATCH (n) RETURN n
auto match_all_nodes = [&db](const properties_t &args) {
DbAccessor t(db);
iter::for_all(t.vertex_access(), [&](auto vertex) {
if (vertex.fill()) {
cout_properties(vertex->data.props);
}
});
// TODO
// db.graph.vertices.filter().all(t, handler);
t.commit();
return true;
};
queries[15284086425088081497u] = match_all_nodes;
// MATCH (n:LABEL) RETURN n
auto find_by_label = [&db](const properties_t &args) {
DbAccessor t(db);
auto &label = t.label_find_or_create("LABEL");
auto prop_key =
t.vertex_property_family_get("name").get(Type::String).family_key();
cout << "VERTICES" << endl;
iter::for_all(label.index->for_range_exact(t),
[&](auto a) { cout << a.at(prop_key) << endl; });
// TODO
// db.graph.vertices.fileter("LABEL").all(t, handler);
return true;
};
queries[4857652843629217005u] = find_by_label;
queries[10597108978382323595u] = create_account;
queries[5397556489557792025u] = create_labeled_and_named_node;
queries[7939106225150551899u] = create_edge;
queries[6579425155585886196u] = create_edge;
queries[11198568396549106428u] = find_node_by_internal_id;
queries[8320600413058284114u] = find_edge_by_internal_id;
queries[6813335159006269041u] = update_node;
return queries;
}