/// <summary>
/// Creates a new instance of the <see cref="WeightValue"/> class by subtracting
/// the operand from this weight value.
/// </summary>
///
/// <param name="value1">
/// The weight value from which <paramref name="value2"/> is to
/// be subtracted.
/// </param>
///
/// <param name="value2">
/// The weight value to subtract from <paramref name="value1"/>.
/// </param>
///
/// <remarks>
/// This constructor creates a <see cref="WeightValue"/> that is
/// the difference between this weight value and the operand. The value is
/// always subtracted. If both operands have a
/// <see cref="DisplayValue"/> set and they have the same
/// <see cref="DisplayValue.UnitsCode"/>,
/// then the result sets DisplayValue with the same units code and the
/// value is the difference between the operands.
/// </remarks>
///
/// <exception cref="InvalidOperationException">
/// The <paramref name="value2"/> parameter is larger than the <paramref name="value1"/> parameter.
/// </exception>
///
public static WeightValue operator -(
WeightValue value1,
WeightValue value2)
{
WeightValue newValue = new WeightValue();
if (value2.Value > value1.Value)
{
throw new InvalidOperationException(Resources.WeightResultNotPositive);
}
newValue.Value = value1.Value - value2.Value;
if (value1.DisplayValue != null && value2.DisplayValue != null)
{
if (value1.DisplayValue.UnitsCode == value2.DisplayValue.UnitsCode ||
value1.DisplayValue.Units == value2.DisplayValue.Units)
{
newValue.DisplayValue = new DisplayValue();
newValue.DisplayValue.UnitsCode = value1.DisplayValue.UnitsCode;
newValue.DisplayValue.Value =
value1.DisplayValue.Value - value2.DisplayValue.Value;
newValue.DisplayValue.Units = value1.DisplayValue.Units;
}
}
return(newValue);
}
/// <summary>
/// Populates this <see cref="Weight"/> instance from the data in the XML.
/// </summary>
///
/// <param name="typeSpecificXml">
/// The XML to get the weight data from.
/// </param>
///
/// <exception cref="InvalidOperationException">
/// The first node in <paramref name="typeSpecificXml"/> is not
/// a weight node.
/// </exception>
///
protected override void ParseXml(IXPathNavigable typeSpecificXml)
{
XPathNavigator weightNav =
typeSpecificXml.CreateNavigator().SelectSingleNode("weight");
Validator.ThrowInvalidIfNull(weightNav, Resources.WeightUnexpectedNode);
_when = new HealthServiceDateTime();
_when.ParseXml(weightNav.SelectSingleNode("when"));
_value = new WeightValue();
_value.ParseXml(weightNav.SelectSingleNode("value"));
}
/// <summary>
/// Populates this <see cref="WeightGoal"/> instance from the data in the XML.
/// </summary>
///
/// <param name="typeSpecificXml">
/// The XML to get the weight goal data from.
/// </param>
///
/// <exception cref="InvalidOperationException">
/// The first node in <paramref name="typeSpecificXml"/> is not
/// a weight-goal node.
/// </exception>
///
protected override void ParseXml(IXPathNavigable typeSpecificXml)
{
XPathNavigator weightGoalNav =
typeSpecificXml.CreateNavigator().SelectSingleNode("weight-goal");
Validator.ThrowInvalidIfNull(weightGoalNav, Resources.WeightGoalUnexpectedNode);
XPathNavigator initialNav =
weightGoalNav.SelectSingleNode("initial");
if (initialNav != null)
{
_initialWeight = new WeightValue();
_initialWeight.ParseXml(initialNav);
}
XPathNavigator minNav =
weightGoalNav.SelectSingleNode("minimum");
if (minNav != null)
{
_minWeight = new WeightValue();
_minWeight.ParseXml(minNav);
}
XPathNavigator maxNav =
weightGoalNav.SelectSingleNode("maximum");
if (maxNav != null)
{
_maxWeight = new WeightValue();
_maxWeight.ParseXml(maxNav);
}
XPathNavigator goalNav =
weightGoalNav.SelectSingleNode("goal-info");
if (goalNav != null)
{
_goal = new Goal();
_goal.ParseXml(goalNav);
}
}
private static void AppendWeightValue(StringBuilder result, WeightValue value, string labelFormat)
{
string unitsString = string.Empty;
string valueString;
if (value.DisplayValue != null)
{
valueString = value.DisplayValue.ToString();
}
else
{
valueString = (value.Value * 1000).ToString(CultureInfo.InvariantCulture);
unitsString = Resources.DietaryDailyIntakeToStringUnitGrams;
}
result.AppendFormat(
labelFormat,
valueString,
unitsString);
}
/// <summary>
/// Creates a new instance of the <see cref="Weight"/> class with the
/// specified date/time and weight.
/// </summary>
///
/// <param name="when">
/// The date/time when the weight measurement occurred.
/// </param>
///
/// <param name="weight">
/// The person's weight.
/// </param>
///
/// <exception cref="ArgumentNullException">
/// The <paramref name="when"/> or <paramref name="weight"/> parameter is <b>null</b>.
/// </exception>
///
public Weight(HealthServiceDateTime when, WeightValue weight)
: base(TypeId)
{
When = when;
Value = weight;
}
/// <summary>
/// Populates this <see cref="DietaryDailyIntake"/> instance from the
/// data in the XML.
/// </summary>
///
/// <param name="typeSpecificXml">
/// The XML to get the dietary intake data from.
/// </param>
///
/// <exception cref="InvalidOperationException">
/// The first node in <paramref name="typeSpecificXml"/> is not
/// a <see cref="DietaryDailyIntake"/> node.
/// </exception>
///
protected override void ParseXml(IXPathNavigable typeSpecificXml)
{
XPathNavigator intakeNav =
typeSpecificXml.CreateNavigator().SelectSingleNode(
"dietary-intake-daily");
Validator.ThrowInvalidIfNull(intakeNav, Resources.DietaryDailyIntakeUnexpectedNode);
_when = new HealthServiceDate();
_when.ParseXml(intakeNav.SelectSingleNode("when"));
XPathNavigator caloriesNav =
intakeNav.SelectSingleNode("calories");
if (caloriesNav != null)
{
_calories = caloriesNav.ValueAsInt;
}
XPathNavigator totalFatNav =
intakeNav.SelectSingleNode("total-fat");
if (totalFatNav != null)
{
_totalFat = new WeightValue();
_totalFat.ParseXml(totalFatNav);
}
XPathNavigator satFatNav =
intakeNav.SelectSingleNode("saturated-fat");
if (satFatNav != null)
{
_saturatedFat = new WeightValue();
_saturatedFat.ParseXml(satFatNav);
}
XPathNavigator transFatNav =
intakeNav.SelectSingleNode("trans-fat");
if (transFatNav != null)
{
_transFat = new WeightValue();
_transFat.ParseXml(transFatNav);
}
XPathNavigator proteinNav =
intakeNav.SelectSingleNode("protein");
if (proteinNav != null)
{
_protein = new WeightValue();
_protein.ParseXml(proteinNav);
}
XPathNavigator totalCarbsNav =
intakeNav.SelectSingleNode("total-carbohydrates");
if (totalCarbsNav != null)
{
_totalCarbs = new WeightValue();
_totalCarbs.ParseXml(totalCarbsNav);
}
XPathNavigator fiberNav =
intakeNav.SelectSingleNode("dietary-fiber");
if (fiberNav != null)
{
_fiber = new WeightValue();
_fiber.ParseXml(fiberNav);
}
XPathNavigator sugarsNav =
intakeNav.SelectSingleNode("sugars");
if (sugarsNav != null)
{
_sugars = new WeightValue();
_sugars.ParseXml(sugarsNav);
}
XPathNavigator sodiumNav =
intakeNav.SelectSingleNode("sodium");
if (sodiumNav != null)
{
_sodium = new WeightValue();
_sodium.ParseXml(sodiumNav);
}
XPathNavigator cholesterolNav =
intakeNav.SelectSingleNode("cholesterol");
if (cholesterolNav != null)
{
_cholesterol = new WeightValue();
_cholesterol.ParseXml(cholesterolNav);
}
}
