first commit for openGauss connect odbc code

connexp.h

@@ -0,0 +1,86 @@
+/* File:			connexp.h
+ *
+ * Description:		See "connection.c"
+ *
+ * Comments:		See "notice.txt" for copyright and license information.
+ *
+ */
+
+#ifndef __CONNEXPORT_H__
+#define __CONNEXPORT_H__
+
+/*
+ *	The psqlodbc dll exports functions below used in the pgenlist dll.
+ *
+ */
+
+#undef	DLL_DECLARE
+#ifdef	_PGDTC_FUNCS_IMPLEMENT_
+#define	DLL_DECLARE	_declspec(dllexport)
+#else
+#ifdef	_PGDTC_FUNCS_IMPORT_
+#define	DLL_DECLARE	_declspec(dllimport)
+#else
+#define	DLL_DECLARE
+#endif /* _PGDTC_FUNC_IMPORT_ */
+#endif /* _PGDTC_FUNCS_IMPLEMENT_ */
+
+#ifdef	__cplusplus
+extern "C" {
+#endif
+
+#define	KEYWORD_DTC_CHECK	"dtchk"
+#define	DTC_CHECK_LINK_ONLY	1
+#define	DTC_CHECK_BEFORE_LINK	2
+#define	DTC_CHECK_RM_CONNECTION	3
+
+/*	Property */
+enum {
+	inprogress
+	,enlisted
+	,inTrans			/* read-only */
+	,errorNumber			/* read_only */
+	,idleInGlobalTransaction	/* read-only */
+	,connected			/* read-only */
+	,prepareRequested
+};
+
+/* 	PgDtc_isolate option */
+enum {
+	disposingConnection = 1L
+	,useAnotherRoom = (1L << 1)
+};
+
+/* 	One phase commit operations */
+enum {
+	ONE_PHASE_COMMIT = 0
+	,ONE_PHASE_ROLLBACK
+	,ABORT_GLOBAL_TRANSACTION
+	,SHUTDOWN_LOCAL_TRANSACTION
+};
+
+/* 	Two phase commit operations */
+enum {
+	PREPARE_TRANSACTION = 0
+	,COMMIT_PREPARED
+	,ROLLBACK_PREPARED
+};
+
+DLL_DECLARE void PgDtc_create_connect_string(void *self, char *connstr, int strsize);
+DLL_DECLARE int  PgDtc_is_recovery_available(void *self, char *reason, int rsize);
+DLL_DECLARE void PgDtc_set_async(void *self, void *async);
+DLL_DECLARE void *PgDtc_get_async(void *self);
+DLL_DECLARE void PgDtc_set_property(void *self, int property, void *value);
+DLL_DECLARE void PgDtc_set_error(void *self, const char *message, const char *func);
+DLL_DECLARE int	 PgDtc_get_property(void *self, int property);
+DLL_DECLARE BOOL PgDtc_connect(void *self);
+DLL_DECLARE void PgDtc_free_connect(void *self);
+DLL_DECLARE BOOL PgDtc_one_phase_operation(void *self, int operation);
+DLL_DECLARE BOOL PgDtc_two_phase_operation(void *self, int operation, const char *gxid);
+DLL_DECLARE BOOL PgDtc_lock_cntrl(void *self, BOOL acquire, BOOL bTrial);
+DLL_DECLARE void *PgDtc_isolate(void *self, DWORD option);
+
+#ifdef	__cplusplus
+}
+#endif
+#endif /* __CONNEXPORT_H__ */