///<summary>
/// Sets a collection of literals as a property value on this entity.
///</summary>
///<param name="propertyName">Property Name</param>
///<param name="value">A collection of literals that are the property value.</param>
///<typeparam name="T">The type of the literal</typeparam>
///<exception cref="EntityFrameworkException">Thrown if the named property is not mapped.</exception>
public void SetRelatedLiteralPropertiesCollection <T>(string propertyName, ICollection <T> value)
{
if (!IsAttached)
{
var literalsCollection = new LiteralsCollection <T>(value);
_currentItemValues[propertyName] = literalsCollection;
}
else
{
object existing;
LiteralsCollection <T> literalsCollection;
if (_currentItemValues.TryGetValue(propertyName, out existing) && existing is LiteralsCollection <T> )
{
literalsCollection = existing as LiteralsCollection <T>;
}
else
{
var propertyHint = GetPropertyHint(propertyName);
if (propertyHint.MappingType != PropertyMappingType.Property)
{
throw new EntityFrameworkException(
"Cannot set related literals for property '{0}' on type '{1}' because the property is mapped as '{2}'",
propertyName, GetType().FullName, propertyHint.MappingType);
}
literalsCollection = new LiteralsCollection <T>(this, propertyHint.SchemaTypeUri);
_currentItemValues[propertyName] = literalsCollection;
}
literalsCollection.Clear();
foreach (var item in value)
{
literalsCollection.Add(item);
}
}
}
/// <summary>
/// Returns the collection of literal values for a property of this entity
/// </summary>
/// <typeparam name="T">The type of literal value to return</typeparam>
/// <param name="propertyName">The name of the property</param>
/// <returns>The collection of literal values</returns>
public LiteralsCollection <T> GetRelatedLiteralPropertiesCollection <T>(string propertyName)
{
if (!IsAttached)
{
object value;
if (_currentItemValues.TryGetValue(propertyName, out value) &&
value is LiteralsCollection <T> )
{
return(value as LiteralsCollection <T>);
}
var literalsCollection = new LiteralsCollection <T>(new T[0]);
_currentItemValues[propertyName] = literalsCollection;
return(literalsCollection);
}
if (_currentItemValues.ContainsKey(propertyName))
{
return(_currentItemValues[propertyName] as LiteralsCollection <T>);
}
var propertyHint = GetPropertyHint(propertyName);
if (propertyHint.MappingType != PropertyMappingType.Property)
{
throw new EntityFrameworkException(
"Cannot retrieve related literals for property '{0}' on type '{1}' because the property is mapped as '{2}'",
propertyName, GetType().FullName, propertyHint.MappingType);
}
var properties = new LiteralsCollection <T>(this, propertyHint.SchemaTypeUri);
_currentItemValues[propertyName] = properties;
return(properties);
}
