/// <summary> Determines an attribute string for the given instance reference. </summary>
private string ReferenceToString(object tempValue, out bool reference)
{
reference = true;
if (tempValue == null)
{
return(String.Empty);
}
else
{
Type type = tempValue.GetType();
PublishNameAttribute attribute = ((PublishNameAttribute)ReflectionUtility.GetAttribute(type, typeof(PublishNameAttribute)));
if (attribute != null)
{
return((string)ReflectionUtility.GetMemberValue(ReflectionUtility.FindSimpleMember(type, attribute.MemberName), tempValue));
}
else
{
var converter = Persistence.GetTypeConverter(type);
if (converter != null)
{
reference = false;
return(converter.ConvertToString(tempValue));
}
}
return(String.Empty);
}
}
/// <summary> Determines if the specified property should be serialized. </summary>
private bool ShouldPersist(MemberInfo member, object tempValue, object instance)
{
DefaultValueAttribute defaultValues = (DefaultValueAttribute)ReflectionUtility.GetAttribute(member, typeof(DefaultValueAttribute));
if (defaultValues != null)
{
return(!Object.Equals(tempValue, defaultValues.Value));
}
DefaultValueMemberAttribute defaultMember = (DefaultValueMemberAttribute)ReflectionUtility.GetAttribute(member, typeof(DefaultValueMemberAttribute));
if (defaultMember != null)
{
return
(!Object.Equals
(
tempValue,
ReflectionUtility.GetMemberValue
(
ReflectionUtility.FindSimpleMember(instance.GetType(), defaultMember.MemberName),
instance
)
));
}
return(true);
}
/// <summary> Finds the instance for a specific member. </summary>
/// <remarks>
/// Names with dot qualifiers are resolved to their unqualified names by finding
/// a by-reference member for each qualifier for each instance.
/// </remarks>
/// <param name="LNamePath"> Pass the fully qualified name and get the simple name back. </param>
/// <returns> The instance containing the member named the simple (unqualified) name. </returns>
private static object FindMemberInstance(object LInstance, ref string LNamePath)
{
int dotPos;
while ((dotPos = LNamePath.IndexOf('.')) >= 0)
{
LInstance = ReflectionUtility.GetMemberValue(ReflectionUtility.FindSimpleMember(LInstance.GetType(), LNamePath.Substring(0, dotPos)), LInstance);
LNamePath = LNamePath.Substring(dotPos + 1);
}
;
return(LInstance);
}
/// <summary> Gets the MemberInfo for the name member of the specified type. </summary>
private MemberInfo GetNameMemberInfo(Type type)
{
PublishNameAttribute publishName = (PublishNameAttribute)ReflectionUtility.GetAttribute(type, typeof(PublishNameAttribute));
if (publishName == null)
{
return(null);
}
else
{
return(ReflectionUtility.FindSimpleMember(type, publishName.MemberName));
}
}
/// <summary> Deserializes an instance from a node. </summary>
/// <param name="node"> The XML node. This node will not be affected by this method. </param>
/// <param name="instance"> An optional instance to deserialize "into". </param>
/// <returns> The instance that was passed by AInstance or was constructed if null was passed. </returns>
private object ReadObject(XElement node, object instance)
{
string elementName = node.Name.LocalName.Substring(node.Name.LocalName.LastIndexOf('.') + 1).ToLower(); // simple type name
Type type;
if (instance != null) // instance provided
{
type = instance.GetType();
string typeName = GetElementName(type); // result is lower case
if (elementName != typeName)
{
Errors.Add(new BOPException(BOPException.Codes.TypeNameMismatch, elementName, typeName));
}
}
else // construct instance
{
type = GetClassType(elementName, node.Name.NamespaceName);
try
{
if (!IsValueType(type))
{
PublishDefaultConstructorAttribute constructorAttribute = (PublishDefaultConstructorAttribute)ReflectionUtility.GetAttribute(type, typeof(PublishDefaultConstructorAttribute));
if ((constructorAttribute == null) || (constructorAttribute.ConstructorSignature == String.Empty))
{
instance = Activator.CreateInstance(type, new object[] { });
}
else
{
// create a copy of the node to work with
// so that the original is not corrupted by disappearing attributes
node = new XElement(node);
instance = ConstructInstance(constructorAttribute.ConstructorSignature, type, node);
}
}
else
{
return(ReflectionUtility.StringToValue(node.Attribute("value").Value, type));
}
}
catch (Exception E)
{
throw new BOPException(BOPException.Codes.UnableToConstruct, E, type.FullName);
}
}
MemberInfo member;
object memberInstance;
string memberName;
Type memberType;
// Have Type and Instance, now read the properties
try
{
// Read attributes
foreach (XAttribute attribute in node.Attributes())
{
try
{
memberName = attribute.Name.LocalName.ToLower();
if
(
(!attribute.IsNamespaceDeclaration)
&&
!(
IsBOPNode(attribute.Name) &&
(memberName.StartsWith(BOPType) || memberName.StartsWith(BOPDefault))
)
)
{
if (IsBOPNode(attribute.Name))
{
memberInstance = instance;
if (Persistence.XNamesEqual(attribute.Name, XmlBOPName))
{
member = GetNameMemberInfo(type);
if (member == null)
{
throw new BOPException(BOPException.Codes.InvalidElementName, type.Name);
}
}
else
{
throw new BOPException(BOPException.Codes.InvalidAttribute, attribute.Name);
}
}
else
{
memberInstance = FindMemberInstance(instance, ref memberName);
member = ReflectionUtility.FindSimpleMember(memberInstance.GetType(), memberName);
}
memberType = GetMemberType(node, member);
ReflectionUtility.SetMemberValue
(
member,
memberInstance,
(
AttributeToValue
(
attribute.Value,
memberType,
memberInstance,
member
)
)
);
}
}
catch (Exception exception)
{
Errors.Add(exception);
}
}
// Add this instance to the list of read instances if it has a name
member = GetNameMemberInfo(instance.GetType());
if (member != null)
{
memberName = (string)ReflectionUtility.GetMemberValue(member, instance);
if (memberName != String.Empty)
{
InstancesByName.Add(memberName, instance);
}
}
// read child nodes
IList list;
foreach (XElement localNode in node.Elements())
{
try
{
memberName = localNode.Name.LocalName.ToLower();
memberInstance = FindMemberInstance(instance, ref memberName);
// First see if the member instance has a default list attribute and use it if it does
string defaultListName = GetDefaultListMemberName(memberInstance.GetType());
if (defaultListName == String.Empty)
{
list = memberInstance as IList;
}
else // if no default list, assume the member instance IS the list
{
list = ReflectionUtility.GetMemberValue
(
ReflectionUtility.FindSimpleMember(memberInstance.GetType(), defaultListName),
memberInstance
) as IList;
}
if (list == null)
{
throw new BOPException(BOPException.Codes.DefaultListNotFound, memberInstance.GetType().Name);
}
list.Add(ReadObject(localNode, null));
}
catch (Exception exception)
{
Errors.Add(exception);
}
}
// call AfterDeserialize
if (instance is IBOPSerializationEvents)
{
((IBOPSerializationEvents)instance).AfterDeserialize(this);
}
if (AfterDeserialized != null)
{
AfterDeserialized(instance);
}
}
catch
{
if ((instance != null) && (instance is IDisposable))
{
((IDisposable)instance).Dispose();
}
throw;
}
return(instance);
}
/// <summary> Constructs a new instance given a specified type and signature. </summary>
/// <remarks>
/// Any constructor arguments are loaded from the specified XML node.
/// The specified node may be altered by this method. (clone it first if you do not want it affected)
/// </remarks>
private object ConstructInstance(string signature, Type type, XElement node)
{
// Determine the constructor signature
string[] signatureNames = signature.Split(new char[] { ';' });
Type[] localSignature = new Type[signatureNames.Length];
for (int i = localSignature.Length - 1; i >= 0; i--)
{
localSignature[i] = ReflectionUtility.GetType(signatureNames[i], type.Assembly);
}
// Find the matching constructor
ConstructorInfo constructor = type.GetConstructor(localSignature);
if (constructor == null)
{
throw new BOPException(BOPException.Codes.DefaultConstructorNotFound, signature);
}
string nameMemberName = GetNameMemberName(type);
// Build the constructor's parameter list
ParameterInfo[] parameters = constructor.GetParameters();
object[] parameterValues = new object[parameters.Length];
PublishSourceAttribute source;
for (int i = parameters.Length - 1; i >= 0; i--) // order doesn't matter so step down to avoid re-eval of length - 1
{
source = (PublishSourceAttribute)ReflectionUtility.GetAttribute(parameters[i], typeof(PublishSourceAttribute));
if (source == null)
{
throw new BOPException(BOPException.Codes.ConstructorArgumentRefNotSpecified, parameters[i].Name, type.FullName);
}
var memberName = source.MemberName.ToLower();
XAttribute attribute = node.Attribute(memberName);
if (attribute != null)
{
parameterValues[i] = AttributeToValue
(
attribute.Value,
GetMemberType(node, ReflectionUtility.FindSimpleMember(type, memberName)),
null,
null
);
attribute.Remove(); // remove so we don't read the attribute later
}
else // didn't find a regular attribute, so look for a default tag in the xml
{
attribute = node.Attribute(XmlBOPDefault + source.MemberName.ToLower());
if (attribute != null)
{
parameterValues[i] = ReadAttributeDefault(ReflectionUtility.FindSimpleMember(type, memberName), null);
attribute.Remove();
}
else
{
// see if the property on the object has a DefaultValueAttribute set
DefaultValueAttribute defaultValue = (DefaultValueAttribute)ReflectionUtility.GetAttribute(ReflectionUtility.FindSimpleMember(type, source.MemberName), typeof(DefaultValueAttribute));
if (defaultValue != null)
{
parameterValues[i] = defaultValue.Value;
}
else
{
throw new BOPException(BOPException.Codes.ConstructorArgumentRefNotFound, source.MemberName, type.FullName);
}
}
}
}
return(constructor.Invoke(parameterValues));
}
