public static CouchDocument Dehydrate(object entity, PropertyInfo identityProperty, string revision, bool delete)
{
var couchDocument = new CouchDocument();
var entityType = entity.GetType();
if (delete)
{
couchDocument["_id"] = entityType.GetProperty(identityProperty.Name).GetValue(entity, null);
couchDocument["_rev"] = revision;
couchDocument["_deleted"] = true;
}
else
{
couchDocument["Type"] = entityType.Name;
if (revision != String.Empty)
{
couchDocument["_rev"] = revision;
}
foreach (PropertyInfo property in entityType.GetProperties().Where(p => p.CanRead))
{
var key = property.Name;
if (key == identityProperty.Name)
{
key = "_id";
}
var propertyValue = property.GetValue(entity, null);
couchDocument[key] = propertyValue;
}
}
return(couchDocument);
}
public void SaveChanges()
{
var docs = new List <CouchDocument>();
var entities = new List <object>();
foreach (var entity in DeletedEntities)
{
EntityMetadata entityMetadata;
if (EntityMetadataMap.TryGetValue(entity, out entityMetadata))
{
EntityMetadataMap.Remove(entity);
IdentityMap.Remove(entityMetadata.Key);
Type entityType = entity.GetType();
PropertyInfo identityProperty = CouchDatabase.CouchDocumentConvention.GetIdentityPropertyFor(entityType);
docs.Add(CouchDocument.Dehydrate(entity, identityProperty, entityMetadata.Revision, true));
entities.Add(entity);
}
}
DeletedEntities.Clear();
foreach (var entity in EntityMetadataMap.Where(pair => IsEntityDirty(pair.Key, pair.Value)))
{
Type entityType = entity.Key.GetType();
PropertyInfo identityProperty = CouchDatabase.CouchDocumentConvention.GetIdentityPropertyFor(entityType);
docs.Add(CouchDocument.Dehydrate(entity.Key, identityProperty, entity.Value.Revision, false));
entities.Add(entity.Key);
}
if (docs.Count == 0 && entities.Count == 0)
{
return;
}
var bulkDocsMessage = new BulkDocsMessage(docs);
var bulkDocsCommand = new BulkDocsCommand(CouchDatabase.Name, bulkDocsMessage);
BulkDocsResult[] results = CouchDatabase.CouchProxy.Execute <BulkDocsResult[]>(bulkDocsCommand);
for (int index = 0; index < results.Length; index++)
{
BulkDocsResult result = results[index];
object entity = entities[index];
EntityMetadata entityMetadata;
if (EntityMetadataMap.TryGetValue(entity, out entityMetadata) == false)
{
continue;
}
IdentityMap[result.Id] = entity;
entityMetadata.Revision = result.Rev;
entityMetadata.OriginalEntity = entity;
}
}
public T Load <T>(string id) where T : new()
{
object existingEntity;
if (IdentityMap.TryGetValue(id, out existingEntity))
{
return((T)existingEntity);
}
var getDocumentCommand = new GetDocumentCommand(CouchDatabase.Name, id);
CouchDocument couchDocument = CouchDatabase.CouchProxy.Execute <CouchDocument>(getDocumentCommand);
return(StalkEntity <T>(couchDocument));
}
private T StalkEntity <T>(CouchDocument couchDocument) where T : new()
{
PropertyInfo identityProperty = CouchDatabase.CouchDocumentConvention.GetIdentityPropertyFor(typeof(T));
T entity = couchDocument.Hydrate <T>(identityProperty);
EntityMetadata entityMetadata = new EntityMetadata
{
Key = couchDocument["_id"].ToString(),
Revision = couchDocument["_rev"].ToString(),
OriginalEntity = entity
};
EntityMetadataMap[entity] = entityMetadata;
IdentityMap[entityMetadata.Key] = entity;
return(entity);
}
