public void ClearCache()
{
lock (LockObject)
{
EntityFieldMetadata.Clear();
EntityMetadata.Clear();
RelationshipMetadata.Clear();
EntityRelationships.Clear();
}
}
//-------------------------------------------------------------------------
public void RemoveEntity(Entity entity)
{
Type type = entity.GetType();
if (Entities.ContainsKey(type))
{
Entities[type].Remove(entity.Id);
}
EntityRelationships.RemoveEntity(entity);
}
//-------------------------------------------------------------------------
public void GetAsXml(XmlElement xml)
{
//-- Add entities & their dependencies.
XmlElement entitiesXml = xml.OwnerDocument.CreateElement("Entities");
xml.AppendChild(entitiesXml);
XmlElement dependenciesXml = xml.OwnerDocument.CreateElement("EntityDependencies");
xml.AppendChild(dependenciesXml);
// Iterate through each entity type.
foreach (Dictionary <int, Entity> pair in Entities.Values)
{
// Iterate through each entity for the current entity type.
foreach (Entity entity in pair.Values)
{
// Entity xml.
XmlElement entityXml = xml.OwnerDocument.CreateElement("Entity");
entitiesXml.AppendChild(entityXml);
entity.GetAsXml(entityXml);
//-- Dependency xml.
// Dependant entity.
XmlElement entityDependencyXml = xml.OwnerDocument.CreateElement("Entity");
dependenciesXml.AppendChild(entityDependencyXml);
XmlAttribute attrib = xml.OwnerDocument.CreateAttribute("id");
entityDependencyXml.Attributes.Append(attrib);
attrib.Value = entity.Id.ToString();
// Entity's dependencies.
ReadOnlyCollection <Entity> dependencies;
EntityRelationships.GetDependencies(entity, out dependencies);
foreach (Entity dependency in dependencies)
{
XmlElement dependencyXml = xml.OwnerDocument.CreateElement("Dependency");
entityDependencyXml.AppendChild(dependencyXml);
attrib = xml.OwnerDocument.CreateAttribute("id");
dependencyXml.Attributes.Append(attrib);
attrib.Value = dependency.Id.ToString();
}
}
}
}
//-------------------------------------------------------------------------
public void InitialiseFromXml(XmlElement xml)
{
Reset();
// Load the Entities.
if (xml.SelectSingleNode("Entities") == null)
{
throw new ArgumentException("'Entities' element not found.");
}
foreach (XmlElement entityXml in xml["Entities"])
{
AddEntity(Entity.InstantiateFromXml(EntityFactory, entityXml));
}
// Load entity dependencies.
if (xml.SelectSingleNode("EntityDependencies") == null)
{
throw new ArgumentException("'EntityDependencies' element not found.");
}
foreach (XmlElement entityXml in xml["EntityDependencies"])
{
// Dependant entity.
if (entityXml.HasAttribute("id") == false)
{
throw new ArgumentException("Dependant entity 'id' not found.");
}
int dependantId = int.Parse(entityXml.Attributes["id"].Value);
Entity dependant = GetEntity(dependantId);
if (dependant == null)
{
throw new ArgumentException(
string.Format("Dependant Entity '{0}' not found.", dependantId));
}
// Dependency.
foreach (XmlElement dependencyXml in entityXml)
{
if (dependencyXml.HasAttribute("id") == false)
{
throw new ArgumentException(
string.Format("Dependant Entity '{0}' 'Dependency' element missing 'id' attribute.",
dependantId));
}
int dependencyId = int.Parse(dependencyXml.Attributes["id"].Value);
Entity dependency = GetEntity(dependencyId);
if (dependency == null)
{
throw new ArgumentException(
string.Format("Dependant Entity '{0}' dependency '{1}' not found.",
dependantId,
dependencyId));
}
// Create the dependency.
EntityRelationships.AddDependency(dependant, dependency);
}
}
// Update the factory's next id.
int highestId = 0;
foreach (Dictionary <int, Entity> entityByType in Entities.Values)
{
foreach (Entity entity in entityByType.Values)
{
if (entity.Id > highestId)
{
highestId = entity.Id;
}
}
}
EntityFactory.SetNextId(highestId + 1);
}