5a42e15c4a
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.
116 lines
2.8 KiB
C++
116 lines
2.8 KiB
C++
#pragma once
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#include "database/db_transaction.hpp"
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#include "mvcc/version_list.hpp"
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#include "storage/indexes/index_record.hpp"
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#include "storage/model/properties/properties.hpp"
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#include "storage/model/properties/property.hpp"
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#include "storage/model/properties/property_family.hpp"
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#include "transactions/transaction.hpp"
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template <class T, class Derived, class vlist_t = mvcc::VersionList<T>>
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class RecordAccessor
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{
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friend DbAccessor;
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public:
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RecordAccessor(vlist_t *vlist, DbTransaction &db) : vlist(vlist), db(db)
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{
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assert(vlist != nullptr);
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}
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RecordAccessor(T *t, vlist_t *vlist, DbTransaction &db)
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: record(t), vlist(vlist), db(db)
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{
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assert(record != nullptr);
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assert(vlist != nullptr);
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}
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RecordAccessor(RecordAccessor const &other) = default;
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RecordAccessor(RecordAccessor &&other) = default;
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bool empty() const { return record == nullptr; }
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// Fills accessor and returns true if there is valid data for current
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// transaction false otherwise.
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bool fill() const
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{
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const_cast<RecordAccessor *>(this)->record = vlist->find(db.trans);
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return record != nullptr;
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}
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const Id &id() const
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{
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assert(!empty());
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return vlist->id;
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}
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Derived update() const
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{
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assert(!empty());
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return Derived(vlist->update(db.trans), vlist, db);
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}
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bool remove() const
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{
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assert(!empty());
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return vlist->remove(record, db.trans);
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}
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const Property &at(prop_key_t &key) const { return properties().at(key); }
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template <class V>
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auto at(type_key_t<V> &key) const;
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template <class V, class... Args>
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void set(type_key_t<V> &key, Args &&... args)
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{
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properties().template set<V>(key, std::forward<Args>(args)...);
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}
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void set(prop_key_t &key, Property::sptr value)
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{
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properties().set(key, std::move(value));
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}
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void clear(prop_key_t &key) { properties().clear(key); }
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template <class Handler>
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void accept(Handler &handler) const
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{
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properties().template accept<Handler>(handler);
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}
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Properties &properties() const { return record->data.props; }
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explicit operator bool() const { return record != nullptr; }
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T const *operator->() const { return record; }
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T *operator->() { return record; }
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// Assumes same transaction
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friend bool operator==(const RecordAccessor &a, const RecordAccessor &b)
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{
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return a.vlist == b.vlist;
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}
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// Assumes same transaction
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friend bool operator!=(const RecordAccessor &a, const RecordAccessor &b)
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{
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return !(a == b);
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}
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protected:
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template <class K>
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IndexRecord<T, K> create_ir(K &&key)
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{
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return IndexRecord<T, K>(std::move(key), record, vlist);
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}
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T *record{nullptr};
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vlist_t *const vlist;
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DbTransaction &db;
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};
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