public void Attributes()
{
using (var context = new UnitTestContext(this))
{
string eol = StringUtil.Eol;
string xmlText =
"<?xml version=\"1.0\" encoding=\"utf-8\"?>" + eol +
"<firstElement attributeOfFirstElement1=\"AttributeValue1\" attributeOfFirstElement2=\"AttributeValue2\">" +
eol +
" <secondElement>" + eol +
" <valueElement1>TestValue1</valueElement1>" + eol +
" <valueElement2 attributeOfValueElement=\"AttributeValue\">TestValue2</valueElement2>" + eol +
" </secondElement>" + eol +
"</firstElement>" + eol;
// Create XML reader
ITreeReader reader = new XmlTreeReader(xmlText);
// Read root element with two attributes
ITreeReader firstElement = reader.ReadElement("firstElement");
context.Log.Verify($"attributeOfFirstElement1={firstElement.ReadAttribute("attributeOfFirstElement1")}");
context.Log.Verify($"attributeOfFirstElement2={firstElement.ReadAttribute("attributeOfFirstElement2")}");
// Read embedded element
ITreeReader secondElement = firstElement.ReadElement("secondElement");
// Read value element using a single method call
string valueElement1 = secondElement.ReadValueElement("valueElement1");
context.Log.Verify($"valueElement1={valueElement1}");
// Add value element with two attributes by creating element explicitly
ITreeReader valueElementNode2 = secondElement.ReadElement("valueElement2");
string valueElement2 = valueElementNode2.ReadValue();
context.Log.Verify($"attributeOfValueElement={valueElementNode2.ReadAttribute("attributeOfValueElement")}");
context.Log.Verify($"valueElement2={valueElement2}");
}
}
/// <summary>Deserialize from data in ITreeReader.</summary>
public void DeserializeFrom(ITreeReader reader)
{
// Do nothing if the selected XML node is empty
if (reader == null)
{
return;
}
// Iterate over the list of elements
var elementInfoList = DataTypeInfo.GetOrCreate(this).DataElements;
foreach (var elementInfo in elementInfoList)
{
// Get element name and type
string elementName = elementInfo.Name;
Type elementType = elementInfo.PropertyType;
// Get inner XML node, continue with next element if null
ITreeReader innerXmlNode = reader.ReadElement(elementName);
if (innerXmlNode == null)
{
continue;
}
// First check for each of the supported value types
if (elementType == typeof(string))
{
string token = innerXmlNode.ReadValue();
elementInfo.SetValue(this, token);
}
else if (elementType == typeof(double) || elementType == typeof(double?))
{
string token = innerXmlNode.ReadValue();
var value = double.Parse(token);
elementInfo.SetValue(this, value);
}
else if (elementType == typeof(bool) || elementType == typeof(bool?))
{
string token = innerXmlNode.ReadValue();
var value = bool.Parse(token);
elementInfo.SetValue(this, value);
}
else if (elementType == typeof(int) || elementType == typeof(int?))
{
string token = innerXmlNode.ReadValue();
var value = int.Parse(token);
elementInfo.SetValue(this, value);
}
else if (elementType == typeof(long) || elementType == typeof(long?))
{
string token = innerXmlNode.ReadValue();
var value = long.Parse(token);
elementInfo.SetValue(this, value);
}
else if (elementType == typeof(LocalDate) || elementType == typeof(LocalDate?))
{
string token = innerXmlNode.ReadValue();
var value = LocalDateUtil.Parse(token);
elementInfo.SetValue(this, value);
}
else if (elementType == typeof(LocalTime) || elementType == typeof(LocalTime?))
{
string token = innerXmlNode.ReadValue();
var value = LocalTimeUtil.Parse(token);
elementInfo.SetValue(this, value);
}
else if (elementType == typeof(LocalMinute) || elementType == typeof(LocalMinute?))
{
string token = innerXmlNode.ReadValue();
var value = LocalMinuteUtil.Parse(token);
elementInfo.SetValue(this, value);
}
else if (elementType == typeof(LocalDateTime) || elementType == typeof(LocalDateTime?))
{
string token = innerXmlNode.ReadValue();
var value = LocalDateTimeUtil.Parse(token);
elementInfo.SetValue(this, value);
}
else if (elementType == typeof(Instant) || elementType == typeof(Instant?))
{
string token = innerXmlNode.ReadValue();
var value = InstantUtil.Parse(token);
elementInfo.SetValue(this, value);
}
else if (elementType.IsSubclassOf(typeof(Enum)))
{
string token = innerXmlNode.ReadValue();
var value = Enum.Parse(elementType, token);
elementInfo.SetValue(this, value);
}
else
{
// If none of the supported atomic types match, use the activator
// to create and empty instance of a complex type and populate it
var element = Activator.CreateInstance(elementType);
switch (element)
{
case IList listElement:
listElement.DeserializeFrom(elementName, reader);
break;
case Data dataElement:
var keyElement = dataElement as Key;
if (keyElement != null)
{
// Deserialize key from value node containing semicolon delimited string
string token = innerXmlNode.ReadValue();
// Parse semicolon delimited string to populate key elements
keyElement.PopulateFrom(token);
}
else
{
// Deserialize embedded data object from the contents of inner XML node
dataElement.DeserializeFrom(innerXmlNode);
}
break;
case TemporalId idElement:
// Do not serialize
break;
default:
// Error message if the type does not match any of the value or reference types
throw new Exception($"Serialization is not supported for type {elementType}.");
}
// Assign the populated key to the property
elementInfo.SetValue(this, element);
}
}
}
