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Diffstat (limited to 'odb/relational/model.hxx')
| -rw-r--r-- | odb/relational/model.hxx | 868 |
1 files changed, 0 insertions, 868 deletions
diff --git a/odb/relational/model.hxx b/odb/relational/model.hxx deleted file mode 100644 index b7a07ea..0000000 --- a/odb/relational/model.hxx +++ /dev/null @@ -1,868 +0,0 @@ -// file : odb/relational/model.hxx -// license : GNU GPL v3; see accompanying LICENSE file - -#ifndef ODB_RELATIONAL_MODEL_HXX -#define ODB_RELATIONAL_MODEL_HXX - -#include <map> -#include <set> -#include <cassert> -#include <sstream> - -#include <odb/semantics/relational.hxx> - -#include <odb/relational/common.hxx> -#include <odb/relational/context.hxx> - -namespace relational -{ - namespace model - { - typedef std::set<qname> tables; - typedef std::map<qname, semantics::node*> deleted_table_map; - typedef std::map<uname, semantics::data_member*> deleted_column_map; - - struct object_columns: object_columns_base, virtual context - { - typedef object_columns base; - - object_columns (sema_rel::model& model, - sema_rel::table& table, - bool object) - : model_ (model), - table_ (table), - object_ (object), - pkey_ (0), - id_override_ (false) - { - } - - virtual void - traverse_object (semantics::class_& c) - { - if (context::top_object != &c) - { - // We are in one of the bases. Set the id_prefix to its - // (unqualified) name. - // - string t (id_prefix_); - id_prefix_ = class_name (c) + "::"; - object_columns_base::traverse_object (c); - id_prefix_ = t; - } - else - object_columns_base::traverse_object (c); - } - - virtual void - traverse_composite (semantics::data_member* m, semantics::class_& c) - { - string t (id_prefix_); - - if (m != 0) - // Member of a composite type. Add the data member to id_prefix. - // - if (!id_override_) - id_prefix_ += m->name () + "."; - else - id_override_ = false; - else - // Composite base. Add its unqualified name to id_prefix. - // - id_prefix_ += class_name (c) + "::"; - - object_columns_base::traverse_composite (m, c); - - id_prefix_ = t; - } - - virtual void - traverse (semantics::data_member& m, - semantics::type& t, - string const& kp, - string const& dn, - semantics::class_* to = 0) - { - // This overrides the member name for a composite container value - // or key. - // - if (!kp.empty ()) - { - semantics::class_* c (object_pointer (t)); - if (composite_wrapper (c == 0 ? t : utype (*id_member (*c)))) - { - id_prefix_ = kp + "."; - id_override_ = true; - } - } - - object_columns_base::traverse (m, t, kp, dn, to); - } - - using object_columns_base::traverse; - - virtual bool - traverse_column (semantics::data_member& m, string const& name, bool) - { - if (semantics::data_member* m = deleted_member (member_path_)) - { - table_.get<deleted_column_map> ("deleted-map")[name] = m; - return false; - } - - string col_id (id_prefix_ + - (key_prefix_.empty () ? m.name () : key_prefix_)); - - sema_rel::column& c ( - model_.new_node<sema_rel::column> (col_id, type (m), null (m))); - c.set ("cxx-location", m.location ()); - c.set ("member-path", member_path_); - model_.new_edge<sema_rel::unames> (table_, c, name); - - // An id member cannot have a default value. - // - if (!object_columns_base::id ()) - { - string const& d (default_ (m)); - - if (!d.empty ()) - c.default_ (d); - } - - // If we have options, add them. - // - string const& o (column_options (m, key_prefix_)); - - if (!o.empty ()) - c.options (o); - - constraints (m, name, col_id, c); - return true; - } - - virtual string - type (semantics::data_member&) - { - return object_columns_base::column_type (); - } - - virtual bool - null (semantics::data_member&) - { - return !object_columns_base::id () && object_columns_base::null (); - } - - virtual string - default_null (semantics::data_member&) - { - return "NULL"; - } - - virtual string - default_bool (semantics::data_member&, bool v) - { - // Most databases do not support boolean literals. Those that - // do should override this. - // - return (v ? "1" : "0"); - } - - virtual string - default_integer (semantics::data_member&, unsigned long long v, bool neg) - { - std::ostringstream ostr; - ostr << (neg ? "-" : "") << v; - return ostr.str (); - } - - virtual string - default_float (semantics::data_member&, double v) - { - std::ostringstream ostr; - ostr << v; - return ostr.str (); - } - - virtual string - default_string (semantics::data_member&, string const& v) - { - return quote_string (v); - } - - virtual string - default_enum (semantics::data_member&, - tree /*enumerator*/, - string const& /*name*/) - { - // Has to be implemented by the database-specific override. - // - assert (false); - return string (); - } - - virtual void - primary_key (sema_rel::primary_key&) - { - } - - virtual void - constraints (semantics::data_member& m, - string const& /* name */, - string const& /* id */, - sema_rel::column& c) - { - if (object_) - { - if (semantics::data_member* idm = id ()) - { - if (pkey_ == 0) - { - pkey_ = &model_.new_node<sema_rel::primary_key> ( - m.count ("auto")); - pkey_->set ("cxx-location", idm->location ()); - - // In most databases the primary key constraint can be - // manipulated without an explicit name. So we use the special - // empty name for primary keys in order not to clash with - // columns and other constraints. If the target database does - // not support unnamed primary key manipulation, then the - // database-specific code will have to come up with a suitable - // name. - // - model_.new_edge<sema_rel::unames> (table_, *pkey_, ""); - primary_key (*pkey_); - } - - model_.new_edge<sema_rel::contains> (*pkey_, c); - } - } - } - - virtual void - traverse_pointer (semantics::data_member& m, semantics::class_& c) - { - // Ignore inverse object pointers. - // - if (inverse (m, key_prefix_)) - return; - - if (deleted (member_path_)) - { - // Still traverse it as columns so that we can populate the - // deleted map. - // - object_columns_base::traverse_pointer (m, c); - return; - } - - // Get the position of the last column. - // - sema_rel::table::names_iterator i (table_.names_end ()); - - while (i != table_.names_begin ()) - { - --i; - if (i->nameable ().is_a<sema_rel::column> ()) - break; - } - - // Traverse the object pointer as columns. - // - object_columns_base::traverse_pointer (m, c); - - // Get to the first column that we have added. - // - if (i != table_.names_end ()) - ++i; // Next column. - else - i = table_.names_begin (); - - foreign_key (m, c, i); - } - - virtual void - traverse_points_to (semantics::data_member& m, semantics::class_& c) - { - if (deleted (member_path_)) - { - // Still traverse it as columns so that we can populate the - // deleted map. - // - object_columns_base::traverse_points_to (m, c); - return; - } - - // Get the position of the last column. - // - sema_rel::table::names_iterator i (table_.names_end ()); - - while (i != table_.names_begin ()) - { - --i; - if (i->nameable ().is_a<sema_rel::column> ()) - break; - } - - // Traverse the data member as columns. - // - object_columns_base::traverse_points_to (m, c); - - // Get to the first column that we have added. - // - if (i != table_.names_end ()) - ++i; // Next column. - else - i = table_.names_begin (); - - foreign_key (m, c, i); - } - - virtual void - foreign_key (semantics::data_member& m, - semantics::class_& c, - sema_rel::table::names_iterator i) - { - using sema_rel::column; - using sema_rel::foreign_key; - - string id (id_prefix_ + - (key_prefix_.empty () ? m.name () : key_prefix_)); - - deferrable def ( - m.get<deferrable> ("deferrable", - options.fkeys_deferrable_mode ()[db])); - - foreign_key::action_type on_delete ( - m.get<foreign_key::action_type> ( - "on-delete", foreign_key::no_action)); - - foreign_key& fk ( - model_.new_node<foreign_key> (id, table_name (c), def, on_delete)); - - fk.set ("cxx-location", m.location ()); - - bool simple; - - // Get referenced columns. - // - { - data_member_path& id (*id_member (c)); - - instance<object_columns_list> ocl; - ocl->traverse (id); - - for (object_columns_list::iterator i (ocl->begin ()); - i != ocl->end (); ++i) - fk.referenced_columns ().push_back (i->name); - - simple = (fk.referenced_columns ().size () == 1); - } - - // Get referencing columns. - // - for (; i != table_.names_end (); ++i) - { - if (column* c = dynamic_cast<column*> (&i->nameable ())) - model_.new_edge<sema_rel::contains> (fk, *c); - else - break; - } - - // Derive the constraint name. Generally, we want it to be based - // on the column name. This is straightforward for single-column - // references. In case of a composite id, we will need to use the - // column prefix which is based on the data member name, unless - // overridden by the user. In the latter case the prefix can be - // empty, in which case we will just fall back on the member's - // public name. - // - string name; - - if (simple) - name = fk.contains_begin ()->column ().name (); - else - { - string p (column_prefix (m, key_prefix_, default_name_).prefix); - - if (p.empty ()) - p = public_name_db (m); - else if (p[p.size () - 1] == '_') - p.resize (p.size () - 1); // Remove trailing underscore. - - name = column_prefix_.prefix + p; - } - - model_.new_edge<sema_rel::unames> ( - table_, fk, fkey_name (table_.name (), name)); - } - - protected: - string - default_ (semantics::data_member&); - - protected: - sema_rel::model& model_; - sema_rel::table& table_; - bool object_; - sema_rel::primary_key* pkey_; - string id_prefix_; - bool id_override_; - }; - - struct object_indexes: traversal::class_, virtual context - { - typedef object_indexes base; - - object_indexes (sema_rel::model& model, sema_rel::table& table) - : model_ (model), table_ (table) - { - *this >> inherits_ >> *this; - } - - object_indexes (object_indexes const& x) - : root_context (), context (), //@@ -Wextra - model_ (x.model_), table_ (x.table_) - { - *this >> inherits_ >> *this; - } - - virtual void - traverse (type& c) - { - if (!object (c)) // Ignore transient bases. - return; - - // Polymorphic bases get their own tables. - // - if (!polymorphic (c)) - inherits (c); - - indexes& ins (c.get<indexes> ("index")); - - for (indexes::iterator i (ins.begin ()); i != ins.end (); ++i) - { - // Using index name as its id. - // - sema_rel::index& in ( - model_.new_node<sema_rel::index> ( - i->name, i->type, i->method, i->options)); - in.set ("cxx-location", location (i->loc)); - model_.new_edge<sema_rel::unames> (table_, in, i->name); - - for (index::members_type::iterator j (i->members.begin ()); - j != i->members.end (); ++j) - { - using sema_rel::column; - - index::member& im (*j); - - semantics::type* t (&utype (*im.path.back ())); - - if (semantics::class_* ptr = object_pointer (*t)) - t = &utype (*id_member (*ptr)); - - if (type* comp = composite_wrapper (*t)) - { - // Composite value. Get the list of the columns. Note that - // the column prefix needs to contain all the components. - // - instance<object_columns_list> ocl ( - column_prefix (im.path, true)); - ocl->traverse (*comp); - - for (object_columns_list::iterator i (ocl->begin ()); - i != ocl->end (); ++i) - { - column* c (table_.find<column> (i->name)); - assert (c != 0); - model_.new_edge<sema_rel::contains> (in, *c, im.options); - } - } - else - { - // Simple value. Get the column name and look it up in the - // table. - // - column* c (table_.find<column> (column_name (im.path))); - assert (c != 0); - model_.new_edge<sema_rel::contains> (in, *c, im.options); - } - } - } - } - - private: - sema_rel::model& model_; - sema_rel::table& table_; - - traversal::inherits inherits_; - }; - - struct member_create: object_members_base, virtual context - { - typedef member_create base; - - member_create (sema_rel::model& model) - : object_members_base (false, true, false), model_ (model) - { - } - - virtual void - traverse_pointer (semantics::data_member&, semantics::class_&) - { - // We don't want to traverse composite id. - } - - virtual void - traverse_object (semantics::class_& c) - { - if (context::top_object != &c) - { - // We are in one of the bases. Set the id_prefix to its - // (unqualified) name. - // - string t (id_prefix_); - id_prefix_ = class_name (c) + "::"; - object_members_base::traverse_object (c); - id_prefix_ = t; - } - else - { - // Top-level object. Set its id as a prefix. - // - id_prefix_ = string (class_fq_name (c), 2) + "::"; - object_members_base::traverse_object (c); - } - } - - virtual void - traverse_composite (semantics::data_member* m, semantics::class_& c) - { - string t (id_prefix_); - - if (m != 0) - // Member of a composite type. Add the data member to id_prefix. - // - id_prefix_ += m->name () + "."; - else - // Composite base. Add its unqualified name to id_prefix. - // - id_prefix_ += class_name (c) + "::"; - - object_members_base::traverse_composite (m, c); - - id_prefix_ = t; - } - - virtual string - table_options (semantics::data_member&, semantics::type&) - { - return ""; - } - - virtual void - traverse_container (semantics::data_member& m, semantics::type& ct) - { - using semantics::type; - using semantics::data_member; - - using sema_rel::column; - - // Ignore inverse containers of object pointers. - // - if (inverse (m, "value")) - return; - - container_kind_type ck (container_kind (ct)); - qname const& name (table_name (m, table_prefix_)); - - // Ignore deleted container members. - // - if (semantics::data_member* m = deleted_member (member_path_)) - { - model_.get<deleted_table_map> ("deleted-map")[name] = m; - return; - } - - // Add the [] decorator to distinguish this id from non-container - // ids (we don't want to ever end up comparing, for example, an - // object table to a container table). - // - string id (id_prefix_ + m.name () + "[]"); - - sema_rel::table& t (model_.new_node<sema_rel::table> (id)); - t.set ("cxx-location", m.location ()); - t.set ("member-path", member_path_); - t.set ("deleted-map", deleted_column_map ()); - model_.new_edge<sema_rel::qnames> (model_, t, name); - - t.options (table_options (m, ct)); - t.extra ()["kind"] = "container"; - - // object_id - // - { - bool f (false); //@@ (im)persfect forwarding. - instance<object_columns> oc (model_, t, f); - oc->traverse (m, container_idt (m), "id", "object_id"); - } - - // Foreign key and index for the object id. Keep this foreign - // key first since we reply on this information to lookup the - // corresponding object table. - // - { - // Derive the name prefix. See the comment for the other foreign - // key code above. - // - // Note also that id_name can be a column prefix (if id is - // composite), in which case it can be empty. In this case - // we just fallback on the default name. - // - // Finally, this is a top-level column, so there is no column - // prefix. - // - string id_name ( - column_name (m, "id", "object_id", column_prefix ())); - - if (id_name.empty ()) - id_name = "object_id"; - - // Foreign key. - // - sema_rel::foreign_key& fk ( - model_.new_node<sema_rel::foreign_key> ( - id + ".id", - table_name (*context::top_object), - sema_rel::deferrable::not_deferrable, - sema_rel::foreign_key::cascade)); - fk.set ("cxx-location", m.location ()); - model_.new_edge<sema_rel::unames> ( - t, fk, fkey_name (t.name (), id_name)); - - // Get referenced columns. - // - { - data_member_path& id (*id_member (*context::top_object)); - - instance<object_columns_list> ocl; - ocl->traverse (id); - - for (object_columns_list::iterator i (ocl->begin ()); - i != ocl->end (); ++i) - fk.referenced_columns ().push_back (i->name); - } - - // All the columns we have in this table so far are for the - // object id. Add them to the foreign key. - // - for (sema_rel::table::names_iterator i (t.names_begin ()); - i != t.names_end (); - ++i) - { - if (column* c = dynamic_cast<column*> (&i->nameable ())) - model_.new_edge<sema_rel::contains> (fk, *c); - } - - // Index. See if we have a custom index. - // - index* sin (m.count ("id-index") ? &m.get<index> ("id-index") : 0); - sema_rel::index* in (0); - - if (sin != 0) - { - in = &model_.new_node<sema_rel::index> ( - id + ".id", sin->type, sin->method, sin->options); - in->set ("cxx-location", location (sin->loc)); - } - else - { - in = &model_.new_node<sema_rel::index> (id + ".id"); - in->set ("cxx-location", m.location ()); - } - - model_.new_edge<sema_rel::unames> ( - t, - *in, - sin != 0 && !sin->name.empty () - ? sin->name - : index_name (name, id_name)); - - // All the columns we have in this table so far are for the - // object id. Add them to the index. - // - for (sema_rel::table::names_iterator i (t.names_begin ()); - i != t.names_end (); - ++i) - { - if (column* c = dynamic_cast<column*> (&i->nameable ())) - model_.new_edge<sema_rel::contains> ( - *in, *c, (sin != 0 ? sin->members.back ().options : "")); - } - } - - // index (simple value) - // - bool ordered (ck == ck_ordered && !unordered (m)); - if (ordered) - { - // Column. - // - { - bool f (false); //@@ (im)persfect forwarding. - instance<object_columns> oc (model_, t, f); - oc->traverse (m, container_it (m), "index", "index"); - } - - // This is a simple value so the name cannot be empty. It is - // also a top-level column, so there is no column prefix. - // - string col (column_name (m, "index", "index", column_prefix ())); - - // Index. See if we have a custom index. - // - index* sin (m.count ("index-index") - ? &m.get<index> ("index-index") - : 0); - sema_rel::index* in (0); - - if (sin != 0) - { - in = &model_.new_node<sema_rel::index> ( - id + ".index", sin->type, sin->method, sin->options); - in->set ("cxx-location", location (sin->loc)); - } - else - { - in = &model_.new_node<sema_rel::index> (id + ".index"); - in->set ("cxx-location", m.location ()); - } - - model_.new_edge<sema_rel::unames> ( - t, - *in, - sin != 0 && !sin->name.empty () - ? sin->name - : index_name (name, col)); - - column* c (t.find<column> (col)); - assert (c != 0); - - model_.new_edge<sema_rel::contains> ( - *in, - *c, - (sin != 0 ? sin->members.back ().options : "")); - } - - // key - // - if (ck == ck_map || ck == ck_multimap) - { - bool f (false); //@@ (im)persfect forwarding. - instance<object_columns> oc (model_, t, f); - oc->traverse (m, container_kt (m), "key", "key"); - } - - // value - // - { - bool f (false); //@@ (im)persfect forwarding. - instance<object_columns> oc (model_, t, f); - oc->traverse (m, container_vt (m), "value", "value"); - } - } - - protected: - sema_rel::model& model_; - string id_prefix_; - }; - - struct class_: traversal::class_, virtual context - { - typedef class_ base; - - class_ (sema_rel::model& model): model_ (model) {} - - virtual string - table_options (type&) - { - return ""; - } - - virtual void - traverse (type& c) - { - if (!options.at_once () && class_file (c) != unit.file ()) - return; - - if (!object (c)) - return; - - semantics::class_* poly (polymorphic (c)); - - if (abstract (c) && poly == 0) - return; - - qname const& name (table_name (c)); - - // If the table with this name was already seen, assume the - // user knows what they are doing and skip it. - // - if (tables_.count (name)) - return; - - if (deleted (c)) - { - model_.get<deleted_table_map> ("deleted-map")[name] = &c; - return; - } - - string id (class_fq_name (c), 2); // Remove leading '::'. - - sema_rel::table& t (model_.new_node<sema_rel::table> (id)); - t.set ("cxx-location", c.location ()); - t.set ("class", &c); - t.set ("deleted-map", deleted_column_map ()); - model_.new_edge<sema_rel::qnames> (model_, t, name); - - t.options (table_options (c)); - - t.extra ()["kind"] =(poly == 0 - ? "object" - : (poly == &c - ? "polymorphic root object" - : "polymorphic derived object")); - - // Add columns. - // - { - bool tr (true); //@@ (im)persfect forwarding. - instance<object_columns> oc (model_, t, tr); - oc->traverse (c); - } - - // Add indexes. - // - { - instance<object_indexes> oi (model_, t); - oi->traverse (c); - } - - tables_.insert (name); - - // Create tables for members. - // - { - instance<member_create> mc (model_); - mc->traverse (c); - } - } - - protected: - sema_rel::model& model_; - tables tables_; - }; - } -} - -#endif // ODB_RELATIONAL_MODEL_HXX |