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Diffstat (limited to 'odb/pgsql/polymorphic-object-statements.hxx')
| -rw-r--r-- | odb/pgsql/polymorphic-object-statements.hxx | 513 |
1 files changed, 0 insertions, 513 deletions
diff --git a/odb/pgsql/polymorphic-object-statements.hxx b/odb/pgsql/polymorphic-object-statements.hxx deleted file mode 100644 index 717410a..0000000 --- a/odb/pgsql/polymorphic-object-statements.hxx +++ /dev/null @@ -1,513 +0,0 @@ -// file : odb/pgsql/polymorphic-object-statements.hxx -// license : GNU GPL v2; see accompanying LICENSE file - -#ifndef ODB_PGSQL_POLYMORPHIC_OBJECT_STATEMENTS_HXX -#define ODB_PGSQL_POLYMORPHIC_OBJECT_STATEMENTS_HXX - -#include <odb/pre.hxx> - -#include <cstddef> // std::size_t - -#include <odb/forward.hxx> -#include <odb/traits.hxx> - -#include <odb/details/shared-ptr.hxx> - -#include <odb/pgsql/version.hxx> -#include <odb/pgsql/forward.hxx> -#include <odb/pgsql/pgsql-types.hxx> -#include <odb/pgsql/binding.hxx> -#include <odb/pgsql/statement.hxx> -#include <odb/pgsql/statements-base.hxx> -#include <odb/pgsql/simple-object-statements.hxx> - -namespace odb -{ - namespace pgsql - { - // - // Implementation for polymorphic objects. - // - - template <typename T> - class polymorphic_root_object_statements: public object_statements<T> - { - public: - typedef typename object_statements<T>::connection_type connection_type; - typedef typename object_statements<T>::object_traits object_traits; - typedef typename object_statements<T>::id_image_type id_image_type; - - typedef - typename object_traits::discriminator_image_type - discriminator_image_type; - - typedef - typename object_statements<T>::select_statement_type - select_statement_type; - - public: - // Interface compatibility with derived_object_statements. - // - typedef polymorphic_root_object_statements root_statements_type; - - root_statements_type& - root_statements () - { - return *this; - } - - public: - // Discriminator binding. - // - discriminator_image_type& - discriminator_image () {return discriminator_image_;} - - std::size_t - discriminator_image_version () const - {return discriminator_image_version_;} - - void - discriminator_image_version (std::size_t v) - {discriminator_image_version_ = v;} - - binding& - discriminator_image_binding () {return discriminator_image_binding_;} - - bool* - discriminator_image_truncated () {return discriminator_image_truncated_;} - - // Id binding for discriminator retrieval. - // - id_image_type& - discriminator_id_image () {return discriminator_id_image_;} - - std::size_t - discriminator_id_image_version () const - {return discriminator_id_image_version_;} - - void - discriminator_id_image_version (std::size_t v) - {discriminator_id_image_version_ = v;} - - binding& - discriminator_id_image_binding () - {return discriminator_id_image_binding_;} - - // Expose id native binding from object_statements. - // - native_binding& - id_image_native_binding () {return this->id_image_native_binding_;} - - // - // - select_statement_type& - find_discriminator_statement () - { - if (find_discriminator_ == 0) - find_discriminator_.reset ( - new (details::shared) select_statement_type ( - this->conn_, - object_traits::find_discriminator_statement_name, - object_traits::find_discriminator_statement, - false, // Doesn't need to be processed. - false, // Don't optimize. - object_traits::find_statement_types, // The same as find (id). - id_column_count, - discriminator_id_image_binding_, - discriminator_id_image_native_binding_, - discriminator_image_binding_, - false)); - - return *find_discriminator_; - } - - public: - polymorphic_root_object_statements (connection_type&); - - virtual - ~polymorphic_root_object_statements (); - - // Static "override" (statements type). - // - void - load_delayed (const schema_version_migration* svm) - { - assert (this->locked ()); - - if (!this->delayed_.empty ()) - this->template load_delayed_<polymorphic_root_object_statements> ( - svm); - } - - public: - static const std::size_t id_column_count = - object_statements<T>::id_column_count; - - static const std::size_t discriminator_column_count = - object_traits::discriminator_column_count; - - static const std::size_t managed_optimistic_column_count = - object_traits::managed_optimistic_column_count; - - private: - // Discriminator image. - // - discriminator_image_type discriminator_image_; - std::size_t discriminator_image_version_; - binding discriminator_image_binding_; - bind discriminator_image_bind_[discriminator_column_count + - managed_optimistic_column_count]; - bool discriminator_image_truncated_[discriminator_column_count + - managed_optimistic_column_count]; - - // Id image for discriminator retrieval (only used as a parameter). - // - id_image_type discriminator_id_image_; - std::size_t discriminator_id_image_version_; - binding discriminator_id_image_binding_; - native_binding discriminator_id_image_native_binding_; - bind discriminator_id_image_bind_[id_column_count]; - char* discriminator_id_image_values_[id_column_count]; - int discriminator_id_image_lengths_[id_column_count]; - int discriminator_id_image_formats_[id_column_count]; - - details::shared_ptr<select_statement_type> find_discriminator_; - }; - - template <typename T> - class polymorphic_derived_object_statements: public statements_base - { - public: - typedef T object_type; - typedef object_traits_impl<object_type, id_pgsql> object_traits; - typedef typename object_traits::id_type id_type; - typedef typename object_traits::pointer_type pointer_type; - typedef typename object_traits::id_image_type id_image_type; - typedef typename object_traits::image_type image_type; - - typedef typename object_traits::root_type root_type; - typedef - polymorphic_root_object_statements<root_type> - root_statements_type; - - typedef typename object_traits::base_type base_type; - typedef - typename object_traits::base_traits::statements_type - base_statements_type; - - typedef - typename object_traits::extra_statement_cache_type - extra_statement_cache_type; - - typedef pgsql::insert_statement insert_statement_type; - typedef pgsql::select_statement select_statement_type; - typedef pgsql::update_statement update_statement_type; - typedef pgsql::delete_statement delete_statement_type; - - typedef typename root_statements_type::auto_lock auto_lock; - - public: - polymorphic_derived_object_statements (connection_type&); - - virtual - ~polymorphic_derived_object_statements (); - - public: - // Delayed loading. - // - static void - delayed_loader (odb::database&, - const id_type&, - root_type&, - const schema_version_migration*); - public: - // Root and immediate base statements. - // - root_statements_type& - root_statements () - { - return root_statements_; - } - - base_statements_type& - base_statements () - { - return base_statements_; - } - - public: - // Object image. - // - image_type& - image () - { - return image_; - } - - // Insert binding. - // - std::size_t - insert_image_version () const { return insert_image_version_;} - - void - insert_image_version (std::size_t v) {insert_image_version_ = v;} - - std::size_t - insert_id_binding_version () const { return insert_id_binding_version_;} - - void - insert_id_binding_version (std::size_t v) {insert_id_binding_version_ = v;} - - binding& - insert_image_binding () {return insert_image_binding_;} - - // Update binding. - // - std::size_t - update_image_version () const { return update_image_version_;} - - void - update_image_version (std::size_t v) {update_image_version_ = v;} - - std::size_t - update_id_binding_version () const { return update_id_binding_version_;} - - void - update_id_binding_version (std::size_t v) {update_id_binding_version_ = v;} - - binding& - update_image_binding () {return update_image_binding_;} - - // Select binding. - // - std::size_t* - select_image_versions () { return select_image_versions_;} - - binding* - select_image_bindings () {return select_image_bindings_;} - - binding& - select_image_binding (std::size_t d) - { - return select_image_bindings_[object_traits::depth - d]; - } - - bool* - select_image_truncated () {return select_image_truncated_;} - - // Object id binding (comes from the root statements). - // - id_image_type& - id_image () {return root_statements_.id_image ();} - - std::size_t - id_image_version () const {return root_statements_.id_image_version ();} - - void - id_image_version (std::size_t v) {root_statements_.id_image_version (v);} - - binding& - id_image_binding () {return root_statements_.id_image_binding ();} - - binding& - optimistic_id_image_binding () { - return root_statements_.optimistic_id_image_binding ();} - - // Statements. - // - insert_statement_type& - persist_statement () - { - if (persist_ == 0) - persist_.reset ( - new (details::shared) insert_statement_type ( - conn_, - object_traits::persist_statement_name, - object_traits::persist_statement, - object_traits::versioned, // Process if versioned. - object_traits::persist_statement_types, - insert_column_count, - insert_image_binding_, - insert_image_native_binding_, - 0, - false)); - - return *persist_; - } - - select_statement_type& - find_statement (std::size_t d) - { - std::size_t i (object_traits::depth - d); - details::shared_ptr<select_statement_type>& p (find_[i]); - - if (p == 0) - p.reset ( - new (details::shared) select_statement_type ( - conn_, - object_traits::find_statement_names[i], - object_traits::find_statements[i], - object_traits::versioned, // Process if versioned. - false, // Don't optimize. - object_traits::find_statement_types, - id_column_count, - root_statements_.id_image_binding (), - root_statements_.id_image_native_binding (), - select_image_bindings_[i], - false)); - - return *p; - } - - update_statement_type& - update_statement () - { - if (update_ == 0) - update_.reset ( - new (details::shared) update_statement_type ( - conn_, - object_traits::update_statement_name, - object_traits::update_statement, - object_traits::versioned, // Process if versioned. - object_traits::update_statement_types, - update_column_count + id_column_count, - update_image_binding_, - update_image_native_binding_, - false)); - - return *update_; - } - - delete_statement_type& - erase_statement () - { - if (erase_ == 0) - erase_.reset ( - new (details::shared) delete_statement_type ( - conn_, - object_traits::erase_statement_name, - object_traits::erase_statement, - object_traits::find_statement_types, // The same as find (id). - id_column_count, - root_statements_.id_image_binding (), - root_statements_.id_image_native_binding (), - false)); - - return *erase_; - } - - // Extra (container, section) statement cache. - // - extra_statement_cache_type& - extra_statement_cache () - { - return extra_statement_cache_.get ( - conn_, - image_, - id_image (), - id_image_binding (), - &id_image_binding (), // Note, not id+version. - root_statements_.id_image_native_binding (), - object_traits::find_statement_types); - } - - public: - // select = total - id - separate_load + base::select - // insert = total - inverse - // update = total - inverse - id - readonly - separate_update - // - static const std::size_t id_column_count = - object_traits::id_column_count; - - static const std::size_t select_column_count = - object_traits::column_count - - id_column_count - - object_traits::separate_load_column_count + - base_statements_type::select_column_count; - - static const std::size_t insert_column_count = - object_traits::column_count - - object_traits::inverse_column_count; - - static const std::size_t update_column_count = - insert_column_count - - object_traits::id_column_count - - object_traits::readonly_column_count - - object_traits::separate_update_column_count; - - private: - polymorphic_derived_object_statements ( - const polymorphic_derived_object_statements&); - - polymorphic_derived_object_statements& - operator= (const polymorphic_derived_object_statements&); - - private: - root_statements_type& root_statements_; - base_statements_type& base_statements_; - - extra_statement_cache_ptr<extra_statement_cache_type, - image_type, - id_image_type> extra_statement_cache_; - - image_type image_; - - // Select binding. Here we are have an array of statements/bindings - // one for each depth. In other words, if we have classes root, base, - // and derived, then we have the following array of statements: - // - // [0] d + b + r - // [1] d + b - // [2] d - // - // Also, because we have a chain of images bound to these statements, - // we have an array of versions, one entry for each base plus one for - // our own image. - // - // A poly-abstract class only needs the first statement and in this - // case we have only one entry in the the bindings and statements - // arrays (but not versions; we still have a chain of images). - // - std::size_t select_image_versions_[object_traits::depth]; - binding select_image_bindings_[ - object_traits::abstract ? 1 : object_traits::depth]; - bind select_image_bind_[select_column_count]; - bool select_image_truncated_[select_column_count]; - - // Insert binding. The id binding is copied from the hierarchy root. - // - std::size_t insert_image_version_; - std::size_t insert_id_binding_version_; - binding insert_image_binding_; - bind insert_image_bind_[insert_column_count]; - native_binding insert_image_native_binding_; - char* insert_image_values_[insert_column_count]; - int insert_image_lengths_[insert_column_count]; - int insert_image_formats_[insert_column_count]; - - // Update binding. The id suffix binding is copied from the hierarchy - // root. - // - std::size_t update_image_version_; - std::size_t update_id_binding_version_; - binding update_image_binding_; - bind update_image_bind_[update_column_count + id_column_count]; - native_binding update_image_native_binding_; - char* update_image_values_[update_column_count + id_column_count]; - int update_image_lengths_[update_column_count + id_column_count]; - int update_image_formats_[update_column_count + id_column_count]; - - details::shared_ptr<insert_statement_type> persist_; - details::shared_ptr<select_statement_type> find_[ - object_traits::abstract ? 1 : object_traits::depth]; - details::shared_ptr<update_statement_type> update_; - details::shared_ptr<delete_statement_type> erase_; - }; - } -} - -#include <odb/pgsql/polymorphic-object-statements.txx> - -#include <odb/post.hxx> - -#endif // ODB_PGSQL_POLYMORPHIC_OBJECT_STATEMENTS_HXX |