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+/* connection.h - definitions for the connection type
+ *
+ * Copyright (C) 2004-2010 Gerhard Häring <gh@ghaering.de>
+ *
+ * This file is part of pysqlite.
+ *
+ * This software is provided 'as-is', without any express or implied
+ * warranty.  In no event will the authors be held liable for any damages
+ * arising from the use of this software.
+ *
+ * Permission is granted to anyone to use this software for any purpose,
+ * including commercial applications, and to alter it and redistribute it
+ * freely, subject to the following restrictions:
+ *
+ * 1. The origin of this software must not be misrepresented; you must not
+ *    claim that you wrote the original software. If you use this software
+ *    in a product, an acknowledgment in the product documentation would be
+ *    appreciated but is not required.
+ * 2. Altered source versions must be plainly marked as such, and must not be
+ *    misrepresented as being the original software.
+ * 3. This notice may not be removed or altered from any source distribution.
+ */
+
+#ifndef PYSQLITE_CONNECTION_H
+#define PYSQLITE_CONNECTION_H
+#include "Python.h"
+#include "pythread.h"
+#include "structmember.h"
+
+#include "cache.h"
+#include "module.h"
+
+#include "sqlite3.h"
+
+typedef struct
+{
+    PyObject_HEAD
+    sqlite3* db;
+
+    /* 1 if we are currently within a transaction, i. e. if a BEGIN has been
+     * issued */
+    int inTransaction;
+
+    /* the type detection mode. Only 0, PARSE_DECLTYPES, PARSE_COLNAMES or a
+     * bitwise combination thereof makes sense */
+    int detect_types;
+
+    /* the timeout value in seconds for database locks */
+    double timeout;
+
+    /* for internal use in the timeout handler: when did the timeout handler
+     * first get called with count=0? */
+    double timeout_started;
+
+    /* None for autocommit, otherwise a PyString with the isolation level */
+    PyObject* isolation_level;
+
+    /* NULL for autocommit, otherwise a string with the BEGIN statment; will be
+     * freed in connection destructor */
+    char* begin_statement;
+
+    /* 1 if a check should be performed for each API call if the connection is
+     * used from the same thread it was created in */
+    int check_same_thread;
+
+    int initialized;
+
+    /* thread identification of the thread the connection was created in */
+    long thread_ident;
+
+    pysqlite_Cache* statement_cache;
+
+    /* Lists of weak references to statements and cursors used within this connection */
+    PyObject* statements;
+    PyObject* cursors;
+
+    /* Counters for how many statements/cursors were created in the connection. May be
+     * reset to 0 at certain intervals */
+    int created_statements;
+    int created_cursors;
+
+    PyObject* row_factory;
+
+    /* Determines how bytestrings from SQLite are converted to Python objects:
+     * - PyUnicode_Type:        Python Unicode objects are constructed from UTF-8 bytestrings
+     * - OptimizedUnicode:      Like before, but for ASCII data, only PyStrings are created.
+     * - PyString_Type:         PyStrings are created as-is.
+     * - Any custom callable:   Any object returned from the callable called with the bytestring
+     *                          as single parameter.
+     */
+    PyObject* text_factory;
+
+    /* remember references to functions/classes used in
+     * create_function/create/aggregate, use these as dictionary keys, so we
+     * can keep the total system refcount constant by clearing that dictionary
+     * in connection_dealloc */
+    PyObject* function_pinboard;
+
+    /* a dictionary of registered collation name => collation callable mappings */
+    PyObject* collations;
+
+    /* if our connection was created from a APSW connection, we keep a
+     * reference to the APSW connection around and get rid of it in our
+     * destructor */
+    PyObject* apsw_connection;
+
+    /* Exception objects */
+    PyObject* Warning;
+    PyObject* Error;
+    PyObject* InterfaceError;
+    PyObject* DatabaseError;
+    PyObject* DataError;
+    PyObject* OperationalError;
+    PyObject* IntegrityError;
+    PyObject* InternalError;
+    PyObject* ProgrammingError;
+    PyObject* NotSupportedError;
+} pysqlite_Connection;
+
+extern PyTypeObject pysqlite_ConnectionType;
+
+PyObject* pysqlite_connection_alloc(PyTypeObject* type, int aware);
+void pysqlite_connection_dealloc(pysqlite_Connection* self);
+PyObject* pysqlite_connection_cursor(pysqlite_Connection* self, PyObject* args, PyObject* kwargs);
+PyObject* pysqlite_connection_close(pysqlite_Connection* self, PyObject* args);
+PyObject* _pysqlite_connection_begin(pysqlite_Connection* self);
+PyObject* pysqlite_connection_commit(pysqlite_Connection* self, PyObject* args);
+PyObject* pysqlite_connection_rollback(pysqlite_Connection* self, PyObject* args);
+PyObject* pysqlite_connection_new(PyTypeObject* type, PyObject* args, PyObject* kw);
+int pysqlite_connection_init(pysqlite_Connection* self, PyObject* args, PyObject* kwargs);
+
+int pysqlite_connection_register_cursor(pysqlite_Connection* connection, PyObject* cursor);
+int pysqlite_check_thread(pysqlite_Connection* self);
+int pysqlite_check_connection(pysqlite_Connection* con);
+
+int pysqlite_connection_setup_types(void);
+
+#endif