private void ImportLink(MappedLink mappedLink, Entity currentEntity, bool newEntity)
{
int linkedEntityId = _entityRepository.GetEntityIdByUniqueValue(
mappedLink.LinkedUniqueFieldType,
mappedLink.LinkedUniqueFieldValue);
if (linkedEntityId == 0)
{
return;
}
LinkType linkType = _modelsRepository.GetLinkType(mappedLink.LinkType);
if (linkType == null)
{
throw new InvalidOperationException("The link type '{mappedLink.LinkType}' does not exist in the model.");
}
Entity sourceEntity;
Entity targetEntity;
if (mappedLink.Direction == LinkDirection.ChildParent)
{
sourceEntity = new Entity {
Id = linkedEntityId
};
targetEntity = currentEntity;
}
else
{
sourceEntity = currentEntity;
targetEntity = new Entity {
Id = linkedEntityId
};
}
// If entity is new, there would be no existing links.
// If it is not new, skip adding a link if it already exists.
bool linkExists = !newEntity &&
_entityRepository.LinkAlreadyExists(
sourceEntity.Id, targetEntity.Id, null, linkType.Id);
if (linkExists)
{
return;
}
Link link = new Link
{
LinkType = linkType,
Source = sourceEntity,
Target = targetEntity,
Index = mappedLink.SortIndex
};
_entityRepository.AddLink(link);
}
