diff options
Diffstat (limited to 'odb/sqlite/statement.hxx')
| -rw-r--r-- | odb/sqlite/statement.hxx | 54 |
1 files changed, 47 insertions, 7 deletions
diff --git a/odb/sqlite/statement.hxx b/odb/sqlite/statement.hxx index eb55e58..05fa9bd 100644 --- a/odb/sqlite/statement.hxx +++ b/odb/sqlite/statement.hxx @@ -53,25 +53,49 @@ namespace odb return conn_; } + // A statement can be empty. This is used to handle situations + // where a SELECT or UPDATE statement ends up not having any + // columns after processing. An empty statement cannot be + // executed. + // + bool + empty () const + { + return stmt_ == 0; + } + protected: - statement (connection_type& conn, const std::string& text) + // We keep two versions to take advantage of std::string COW. + // + statement (connection_type& conn, + const std::string& text, + statement_kind sk, + const binding* process, + bool optimize) : conn_ (conn) { - init (text.c_str (), text.size ()); + init (text.c_str (), text.size (), sk, process, optimize); } - statement (connection_type& conn, const char* text) + statement (connection_type& conn, + const char* text, + statement_kind sk, + const binding* process, + bool optimize) : conn_ (conn) { - init (text, std::strlen (text)); + init (text, std::strlen (text), sk, process, optimize); } statement (connection_type& conn, const char* text, - std::size_t text_size) + std::size_t text_size, + statement_kind sk, + const binding* process, + bool optimize) : conn_ (conn) { - init (text, text_size); + init (text, text_size, sk, process, optimize); } protected: @@ -128,7 +152,11 @@ namespace odb private: void - init (const char* text, std::size_t text_size); + init (const char* text, + std::size_t text_size, + statement_kind, + const binding* process, + bool optimize); // Doubly-linked list of active statements. // @@ -188,20 +216,28 @@ namespace odb public: select_statement (connection_type& conn, const std::string& text, + bool process_text, + bool optimize_text, binding& param, binding& result); select_statement (connection_type& conn, const char* text, + bool process_text, + bool optimize_text, binding& param, binding& result); select_statement (connection_type& conn, const std::string& text, + bool process_text, + bool optimize_text, binding& result); select_statement (connection_type& conn, const char* text, + bool process_text, + bool optimize_text, binding& result); // Common select interface expected by the generated code. @@ -283,10 +319,12 @@ namespace odb public: insert_statement (connection_type& conn, const std::string& text, + bool process_text, binding& param); insert_statement (connection_type& conn, const char* text, + bool process_text, binding& param); // Return true if successful and false if the row is a duplicate. @@ -311,10 +349,12 @@ namespace odb public: update_statement (connection_type& conn, const std::string& text, + bool process_text, binding& param); update_statement (connection_type& conn, const char* text, + bool process_text, binding& param); unsigned long long |