protected virtual Object CreateAndPopulate(JsonContext jsonContext)
{
var jObject = jsonContext.JObject;
JToken refToken = null;
if (jObject.TryGetValue("$ref", out refToken))
{
return(_refMap[refToken.Value <String>()]);
}
var objectType = jsonContext.ObjectType;
var entityType = _metadataStore.GetEntityType(objectType);
// an entity type
jsonContext.StructuralType = entityType;
var keyValues = entityType.KeyProperties
.Select(p => jObject[p.Name].ToObject(p.ClrType))
.ToArray();
var entityKey = EntityKey.Create(entityType, keyValues);
var entity = _entityManager.FindEntityByKey(entityKey);
if (entity == null)
{
entity = (IEntity)Activator.CreateInstance(objectType);
}
// must be called before populate
UpdateRefMap(jObject, entity);
_allEntities.Add(entity);
return(PopulateEntity(jsonContext, entity));
}
private EntityKey ExtractEntityKey(EntityType entityType, JNode jn)
{
var keyValues = entityType.KeyProperties
.Select(p => jn.Get(p.Name, p.ClrType))
.ToArray();
var entityKey = EntityKey.Create(entityType, keyValues);
return(entityKey);
}
protected virtual Object CreateAndPopulate(JsonContext jsonContext)
{
var jObject = jsonContext.JObject;
JToken refToken = null;
if (jObject.TryGetValue("$ref", out refToken))
{
return(_refMap[refToken.Value <String>()]);
}
EntityType entityType;
Type objectType;
JToken typeToken = null;
if (jObject.TryGetValue("$type", out typeToken))
{
var clrTypeName = typeToken.Value <String>();
var entityTypeName = StructuralType.ClrTypeNameToStructuralTypeName(clrTypeName);
entityType = _metadataStore.GetEntityType(entityTypeName);
objectType = entityType.ClrType;
if (!jsonContext.ObjectType.IsAssignableFrom(objectType))
{
throw new Exception("Unable to convert returned type: " + objectType.Name + " into type: " + jsonContext.ObjectType.Name);
}
jsonContext.ObjectType = objectType;
}
else
{
objectType = jsonContext.ObjectType;
entityType = _metadataStore.GetEntityType(objectType);
}
// an entity type
jsonContext.StructuralType = entityType;
var keyValues = entityType.KeyProperties
.Select(p => jObject[p.Name].ToObject(p.ClrType))
.ToArray();
var entityKey = EntityKey.Create(entityType, keyValues);
var entity = _entityManager.FindEntityByKey(entityKey);
if (entity == null)
{
entity = (IEntity)Activator.CreateInstance(objectType);
}
// must be called before populate
UpdateRefMap(jObject, entity);
_allEntities.Add(entity);
return(PopulateEntity(jsonContext, entity));
}
private ImportResult ImportEntities(JNode jn, ImportOptions importOptions)
{
importOptions = importOptions ?? ImportOptions.Default;
if (importOptions.ShouldMergeMetadata)
{
var msNode = jn.GetJNode("metadataStore");
if (msNode != null)
{
MetadataStore.ImportMetadata(msNode);
var dsJn = jn.GetJNode("dataService");
if (dsJn != null)
{
DefaultDataService = new DataService(dsJn);
}
var qoJn = jn.GetJNode("queryOptions");
if (qoJn != null)
{
DefaultQueryOptions = new QueryOptions(qoJn);
}
}
}
var entityGroupNodesMap = jn.GetJNodeArrayMap("entityGroupMap");
// tempKeyMap will have a new values where collisions will occur
var tempKeyMap = jn.GetJNodeArray("tempKeys").Select(jnEk => new EntityKey(jnEk)).ToDictionary(
ek => ek,
ek => this.FindEntityByKey(ek) == null ? ek : EntityKey.Create(ek.EntityType, KeyGenerator.GetNextTempId(ek.EntityType.KeyProperties.First()))
);
var mergeStrategy = (importOptions.MergeStrategy ?? this.DefaultQueryOptions.MergeStrategy ?? QueryOptions.Default.MergeStrategy).Value;
var importedEntities = new List <IEntity>();
using (NewIsLoadingBlock()) {
entityGroupNodesMap.ForEach(kvp => {
var entityTypeName = kvp.Key;
var entityNodes = kvp.Value;
var entityType = MetadataStore.GetEntityType(entityTypeName);
var entities = ImportEntityGroup(entityNodes, entityType, tempKeyMap, mergeStrategy);
importedEntities.AddRange(entities);
});
}
return(new ImportResult(importedEntities, tempKeyMap));
}
