| public Convert ( object value, System type ) : object | ||
| value | object | |
| type | System | |
| return | object | |
/// <summary>
/// Uses the <see cref="T:PropertyInfo" /> setter to set the value of of the context object's member data.
/// </summary>
/// <param name="pi">The field to set the value in.</param>
/// <param name="value">The value that will be set.</param>
/// <exception cref="T:Ikarii.Lib.Data.Alpaca.MappingException">This exception is thrown if
/// <see cref="T:System.Runtime.Serialization.FormatterConverter"/> is unable to set
/// <paramref name="pi"/> with <paramref name="value"/>.</exception>
internal void SetMappedValue( PropertyInfo pi, object value )
{
if( value != null )
{
try
{
if( value.GetType() == pi.PropertyType || value.GetType().BaseType == pi.PropertyType )
{
pi.SetValue( this.Instance, value, null );
}
else if( pi.PropertyType == typeof( System.Guid ) )
{
pi.SetValue( this.Instance, new Guid( value.ToString() ), null );
}
else if( pi.PropertyType.IsGenericType && ( pi.PropertyType.GetGenericTypeDefinition().Equals( typeof( Nullable<> ) ) ||
pi.PropertyType.GetGenericTypeDefinition().Equals( typeof( Trackable<> ) ) ) )
{
Type generic = pi.PropertyType.GetGenericArguments()[ 0 ];
pi.SetValue( this.Instance, Convert.ChangeType( value, generic ), null );
}
else if( Utility.ImplementsInterface( pi.PropertyType, typeof( System.Collections.ICollection ) ) )
{
pi.SetValue( this.Instance, value, null );
}
else
{
try
{
FormatterConverter fc = new FormatterConverter();
Type valuetype = pi.PropertyType;
object v = fc.Convert( value, valuetype );
pi.SetValue( this.Instance, v, null );
}
catch( Exception e )
{
throw new MappingException(
String.Format( System.Globalization.CultureInfo.InvariantCulture,
@"There was difficulty setting the field named {0} in {1}.
The field's return type is {2} and the value's type was {3}. {2} cannot be converted to {3}. ",
pi.Name, pi.DeclaringType, pi.PropertyType, value.GetType() ), e );
}
}
}
catch( Exception e )
{
throw new MappingException(
String.Format( System.Globalization.CultureInfo.InvariantCulture,
@"Unable to set member {0} with value {1} in {2}.",
pi.Name, value.ToString(), pi.DeclaringType.Name ), e );
}
}
}
/// <summary>
/// Creates an object instance based on the specified object definition.
/// </summary>
/// <param name="objectDefinition">The definition of the object to create.</param>
/// <returns>An instance based on the specified object definition.</returns>
private static object GetObject(ObjectDefinition objectDefinition)
{
object instance = null;
FormatterConverter formatterConverter = new FormatterConverter();
if (objectDefinition.ConstructorParameters.Count > 0)
{
ConstructorInfo[] constructors = objectDefinition.Type.GetConstructors(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
foreach (ConstructorInfo constructorInfo in constructors)
{
ParameterInfo[] constructorParameters = constructorInfo.GetParameters();
if (constructorParameters.Length == objectDefinition.ConstructorParameters.Count)
{
bool match = true;
for (int i = 0; i < constructorParameters.Length; i++)
{
if (objectDefinition.ConstructorParameters[i] is ObjectDefinition)
{
ObjectDefinition constructorParameterDefinition = (ObjectDefinition) objectDefinition.ConstructorParameters[i];
if (constructorParameters[i].ParameterType != constructorParameterDefinition.Type)
{
match = false;
break;
}
}
else if (constructorParameters[i].ParameterType != objectDefinition.ConstructorParameters[i].GetType())
{
match = false;
break;
}
}
if (match)
{
List<object> parameters = new List<object>();
for (int i = 0; i < objectDefinition.ConstructorParameters.Count; i++)
{
object parameter = objectDefinition.ConstructorParameters[i];
if (parameter is ObjectDefinition)
{
ObjectDefinition parameterDefinition = (ObjectDefinition) parameter;
parameters.Add(GetObject(parameterDefinition));
}
else
{
parameter = formatterConverter.Convert(parameter, constructorParameters[i].ParameterType);
parameters.Add(parameter);
}
}
instance = constructorInfo.Invoke(parameters.ToArray());
break;
}
}
}
}
else
{
instance = Activator.CreateInstance(objectDefinition.Type);
}
if (instance == null)
{
throw new ArgumentException("A match could not be found for the specified ObjectDefinition [" + objectDefinition.Id + "]. Please verify the class definition and the configured constructor information.");
}
else
{
if (objectDefinition.Properties.Count > 0)
{
foreach (PropertyInfo propertyInfo in objectDefinition.Type.GetProperties())
{
object propertyValue = objectDefinition.Properties[propertyInfo.Name];
if (propertyValue != null)
{
if (propertyValue is ObjectDefinition)
{
propertyValue = GetObject(propertyValue as ObjectDefinition);
}
propertyInfo.SetValue(instance, formatterConverter.Convert(propertyValue, propertyInfo.PropertyType), null);
}
}
}
return instance;
}
}
