From a905f81cf058667c4c313fef2d3fe34210ed4241 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sun, 4 Mar 2018 12:28:21 +0000
Subject: Add fwd headers to reduce the compile overheads of simple clients.

---
 libdbpp/command.h        |  4 +---
 libdbpp/command_fwd.h    | 21 +++++++++++++++++++++
 libdbpp/connection.h     |  2 +-
 libdbpp/connection_fwd.h | 12 ++++++++++++
 libdbpp/modifycommand.h  |  1 -
 libdbpp/selectcommand.h  |  1 -
 6 files changed, 35 insertions(+), 6 deletions(-)
 create mode 100644 libdbpp/command_fwd.h
 create mode 100644 libdbpp/connection_fwd.h

diff --git a/libdbpp/command.h b/libdbpp/command.h
index 1647e50..aa91282 100644
--- a/libdbpp/command.h
+++ b/libdbpp/command.h
@@ -1,6 +1,7 @@
 #ifndef DB_COMMAND_H
 #define DB_COMMAND_H
 
+#include "command_fwd.h"
 #include <glibmm/ustring.h>
 #include <boost/date_time/posix_time/posix_time_types.hpp>
 #include <boost/shared_ptr.hpp>
@@ -24,8 +25,6 @@ namespace DB {
 			ParameterOutOfRange();
 	};
 
-	typedef std::map<std::string, std::string> CommandOptionsMap;
-
 	/// Represents the basic options that can be passed when creating new commands.
 	class DLL_PUBLIC CommandOptions {
 		public:
@@ -124,7 +123,6 @@ namespace DB {
 			/// Bind a (possibly null) c-string to parameter i.
 			void bindParamS(unsigned int, char * const);
 	};
-	typedef boost::shared_ptr<Command> CommandPtr;
 	typedef AdHoc::Factory<CommandOptions, std::size_t, const CommandOptionsMap &> CommandOptionsFactory;
 }
 
diff --git a/libdbpp/command_fwd.h b/libdbpp/command_fwd.h
new file mode 100644
index 0000000..0a35b18
--- /dev/null
+++ b/libdbpp/command_fwd.h
@@ -0,0 +1,21 @@
+#ifndef DB_COMMAND_FWD_H
+#define DB_COMMAND_FWD_H
+
+#include <string>
+#include <map>
+#include <boost/shared_ptr.hpp>
+
+namespace DB {
+	typedef std::map<std::string, std::string> CommandOptionsMap;
+	class CommandOptions;
+	class Command;
+	typedef boost::shared_ptr<Command> CommandPtr;
+	class ModifyCommand;
+	typedef boost::shared_ptr<ModifyCommand> ModifyCommandPtr;
+	class SelectCommand;
+	typedef boost::shared_ptr<SelectCommand> SelectCommandPtr;
+}
+
+
+#endif
+
diff --git a/libdbpp/connection.h b/libdbpp/connection.h
index 4b75c18..f3cd014 100644
--- a/libdbpp/connection.h
+++ b/libdbpp/connection.h
@@ -1,6 +1,7 @@
 #ifndef DB_CONNECTION_H
 #define DB_CONNECTION_H
 
+#include "connection_fwd.h"
 #include <string>
 #include <set>
 #include <factory.h>
@@ -183,7 +184,6 @@ namespace DB {
 			Connection * conn;
 	};
 
-	typedef boost::shared_ptr<Connection> ConnectionPtr;
 	typedef AdHoc::Factory<Connection, std::string> ConnectionFactory;
 }
 
diff --git a/libdbpp/connection_fwd.h b/libdbpp/connection_fwd.h
new file mode 100644
index 0000000..0594490
--- /dev/null
+++ b/libdbpp/connection_fwd.h
@@ -0,0 +1,12 @@
+#ifndef DB_CONNECTION_FWD_H
+#define DB_CONNECTION_FWD_H
+
+#include <boost/shared_ptr.hpp>
+
+namespace DB {
+	class Connection;
+	typedef boost::shared_ptr<Connection> ConnectionPtr;
+}
+
+#endif
+
diff --git a/libdbpp/modifycommand.h b/libdbpp/modifycommand.h
index 0e225f4..53152aa 100644
--- a/libdbpp/modifycommand.h
+++ b/libdbpp/modifycommand.h
@@ -23,7 +23,6 @@ namespace DB {
 			/// Execute the command and return effected row count
 			virtual unsigned int	execute(bool allowNoChange = true) = 0;
 	};
-	typedef boost::shared_ptr<ModifyCommand> ModifyCommandPtr;
 }
 
 #endif
diff --git a/libdbpp/selectcommand.h b/libdbpp/selectcommand.h
index 5e48f4d..32b5cbe 100644
--- a/libdbpp/selectcommand.h
+++ b/libdbpp/selectcommand.h
@@ -136,7 +136,6 @@ namespace DB {
 			/// Columns in the result set.
 			Columns * columns;
 	};
-	typedef boost::shared_ptr<SelectCommand> SelectCommandPtr;
 }
 
 #endif
-- 
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