public void SetValue(object targetResource, string propertyName, object propertyValue)
{
CustomUtils.CheckArgumentNotNull(targetResource, "targetResource");
CustomUtils.CheckArgumentNotNull(propertyName, "propertyName");
var property = GetProperty(targetResource.GetType(), propertyName);
if (IsComplexType(property.PropertyType))
{
// we treat complex types as value types, an inherit part of an entity type,
// they cannot be null, have no separate metadata, always exist and
// by design complex type properties have no setters
//
// we can relax these constraints later, but now change detection
// logic in custom object context depends on it
if (null == propertyValue)
{
throw new ArgumentNullException(String.Format(
"Value for complex type property '{0}' cannot be null.",
propertyName
));
}
object currentComplexValue = property.GetValue(targetResource, null);
CopyComplexTypeObject(currentComplexValue, propertyValue);
return;
}
CustomMemberType entityMember;
if (TryGetEntityMember(targetResource, propertyName, out entityMember))
{
if (entityMember is CustomNavigationPropertyType)
{
throw new InvalidOperationException(String.Format(
"Given property '{0}' of entity object '{1}' is a navigation " +
"property of type '{2}'. SetValue() is not supposed for " +
"changing navigation properties. Use SetReference() or " +
"AddReferenceToCollection() methods.",
propertyName, targetResource, entityMember.ClrType
));
}
Debug.Assert(entityMember is CustomPropertyType);
CustomPropertyType entityProperty = (CustomPropertyType)entityMember;
if (null != entityProperty.ForeignKeyConstraint)
{
// attempt to set a foreign key property is incorrect in the world of our custom
// data model because there is no setter for such properties at all and the getter
// simply returns value of a primary key property from the primary end entity using
// corresponding navigation property
// get
// {
// if(null == _primaryEnd)
// {
// return default(int);
// }
// return _primaryEnd.Id;
// }
//
// silently return from SetValue without error reporting for compatibility
// with existing tests
return;
}
if (entityProperty.IsPrimaryKey)
{
// all our primary keys are store generated and have internal setter, but
// test framework for Astoria suppose to be able to set primary keys and
// then use same values to query the object; we allow it here to be
// compatible with the existing tests; for objects with initialized primary keys
// the custom object context will actually queue an update operation, but not insert
entityProperty.SetValue(targetResource, propertyValue);
return;
}
}
else
{
Debug.Assert(IsComplexType(targetResource.GetType()));
}
if (null == property.GetSetMethod() || !property.CanWrite)
{
throw new InvalidOperationException(String.Format(
"Property '{0}' of resource type '{1}' is not writable.",
propertyName,
targetResource.GetType().Name
));
}
property.SetValue(targetResource, propertyValue, null);
}