Adds native support for time_duration as a variable type

Pass/retrieve boost::posix_time ptime and time_duration into/out of the db tier

1 files changed, 40 insertions, 0 deletions

diff --git a/project2/common/variableConvert.cpp b/project2/common/variableConvert.cpp
index 737a856..2c6e49a 100644
--- a/project2/common/variableConvert.cpp
+++ b/project2/common/variableConvert.cpp
@@ -29,6 +29,9 @@ class ConvertVisitorGlibUstring : public boost::static_visitor<const Glib::ustri
 		const Glib::ustring & operator()(const Glib::ustring & r) const {
 			return r;
 		}
+		const Glib::ustring & operator()(const boost::posix_time::time_duration & r) const {
+			CONVERT(const Glib::ustring, boost::posix_time::to_simple_string);
+		}
 		const Glib::ustring & operator()(const boost::posix_time::ptime & r) const {
 			CONVERT(const Glib::ustring, boost::posix_time::to_iso_extended_string);
 		}
@@ -50,6 +53,9 @@ class ConvertVisitorStdString : public boost::static_visitor<const std::string &
 		const std::string & operator()(const Glib::ustring & r) const {
 			return r.raw();
 		}
+		const std::string & operator()(const boost::posix_time::time_duration & r) const {
+			CONVERTF(const Glib::ustring, boost::posix_time::to_simple_string, raw);
+		}
 		const std::string & operator()(const boost::posix_time::ptime & r) const {
 			CONVERTF(const Glib::ustring, boost::posix_time::to_iso_extended_string, raw);
 		}
@@ -71,6 +77,9 @@ class ConvertVisitorCharStar : public boost::static_visitor<const char *> {
 		const char * operator()(const Glib::ustring & r) const {
 			return r.c_str();
 		}
+		const char * operator()(const boost::posix_time::time_duration & r) const {
+			CONVERTF(const Glib::ustring, boost::posix_time::to_simple_string, c_str);
+		}
 		const char * operator()(const boost::posix_time::ptime & r) const {
 			CONVERTF(const Glib::ustring, boost::posix_time::to_iso_extended_string, c_str);
 		}
@@ -93,6 +102,9 @@ class ConvertVisitor : public boost::static_visitor<DestType> {
 		DestType operator()(const Glib::ustring & r) const {
 			CONVERT(DestType, boost::lexical_cast<DestType>);
 		}
+		DestType operator()(const boost::posix_time::time_duration &) const {
+			throw InvalidConversionTo(typeid(DestType).name(), "<Time Duration>");
+		}
 		DestType operator()(const boost::posix_time::ptime &) const {
 			throw InvalidConversionTo(typeid(DestType).name(), "<Date Time>");
 		}
@@ -109,6 +121,27 @@ class ConvertVisitor : public boost::static_visitor<DestType> {
 	private:
 		const VariableType * var;
 };
+// Convert to time duration
+class ConvertVisitorTimeDuration : public boost::static_visitor<const boost::posix_time::time_duration &> {
+	public:
+		ConvertVisitorTimeDuration(const VariableType * v) : var(v) {
+		}
+		const boost::posix_time::time_duration & operator()(const Glib::ustring & r) const {
+			CONVERT(const boost::posix_time::time_duration, boost::posix_time::duration_from_string);
+		}
+		const boost::posix_time::time_duration & operator()(const boost::posix_time::time_duration & t) const {
+			return t;
+		}
+		const boost::posix_time::time_duration & operator()(const Null &) const {
+			throw NullVariable();
+		}
+		template <typename T>
+		const boost::posix_time::time_duration & operator()(const T &) const {
+			throw InvalidConversionTo("TimeDuration", typeid(T).name());
+		}
+	private:
+		const VariableType * var;
+};
 // Convert to ptime
 class ConvertVisitorDateTime : public boost::static_visitor<const boost::posix_time::ptime &> {
 	public:
@@ -138,6 +171,9 @@ class ConvertVisitorBool : public boost::static_visitor<bool> {
 		bool operator()(const Glib::ustring & r) const {
 			CONVERT(bool, fromStr);
 		}
+		bool operator()(const boost::posix_time::time_duration & t) const {
+			return (t.ticks() != 0);
+		}
 		bool operator()(const boost::posix_time::ptime &) const {
 			throw InvalidConversionTo("bool", "<Date time>");
 		}
@@ -189,6 +225,10 @@ VariableType::operator double() const
 {
 	return boost::apply_visitor(ConvertVisitor<double>(this), *this);
 }
+VariableType::operator const boost::posix_time::time_duration &() const
+{
+	return boost::apply_visitor(ConvertVisitorTimeDuration(this), *this);
+}
 VariableType::operator const boost::posix_time::ptime &() const
 {
 	return boost::apply_visitor(ConvertVisitorDateTime(this), *this);