/// <summary>
/// Creates entity relation
/// </summary>
/// <param name="entity"></param>
public bool Create(IStorageEntityRelation entityRelation)
{
if (entityRelation == null)
{
throw new ArgumentNullException("entityRelation");
}
var mongoEntityRelation = entityRelation as MongoEntityRelation;
if (mongoEntityRelation == null)
{
throw new Exception("The specified entityRelation is not mongo storage object.");
}
MongoTransaction transaction = null;
if (!MongoStaticContext.Context.TransactionInProgress)
{
transaction = MongoStaticContext.Context.CreateTransaction(true, new MongoTransactionOptions {
Isolation = MongoTransactionIsolation.ReadUncommitted
});
}
lock (lockObject)
{
try
{
cachedRelations = null;
var created = MongoStaticContext.Context.EntityRelations.Create(mongoEntityRelation);
var relation = Read(mongoEntityRelation.Name);
var recRepo = new MongoRecordRepository();
var entityRepo = new MongoEntityRepository();
var originEntity = entityRepo.Read(relation.OriginEntityId);
var targetEntity = entityRepo.Read(relation.TargetEntityId);
recRepo.CreateRecordField(originEntity.Name, $"#{relation.Name}_targets", null);
recRepo.CreateRecordField(targetEntity.Name, $"#{relation.Name}_origins", null);
InvalidateRelationIndex(relation);
if (transaction != null)
{
transaction.Commit();
}
cachedRelations = null;
return(created);
}
catch
{
if (transaction != null)
{
transaction.Rollback();
}
throw;
}
}
}
/// <summary>
/// Deletes entity relation
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public bool Delete(Guid id)
{
lock (lockObject)
{
MongoTransaction transaction = null;
if (!MongoStaticContext.Context.TransactionInProgress)
{
transaction = MongoStaticContext.Context.CreateTransaction();
}
try
{
var relation = Read(id);
var recRepo = new MongoRecordRepository();
var entityRepo = new MongoEntityRepository();
var originEntity = entityRepo.Read(relation.OriginEntityId);
var targetEntity = entityRepo.Read(relation.TargetEntityId);
recRepo.RemoveRecordField(originEntity.Name, $"#{relation.Name}_targets");
recRepo.RemoveRecordField(targetEntity.Name, $"#{relation.Name}_origins");
InvalidateRelationIndex(relation, dropIndexes: true);
var result = MongoStaticContext.Context.EntityRelations.Delete(Query.EQ("_id", id));
if (transaction != null)
{
transaction.Commit();
}
cachedRelations = null;
return(result);
}
catch
{
if (transaction != null)
{
transaction.Rollback();
}
throw;
}
}
}
/// <summary>
/// Creates entity relation
/// </summary>
/// <param name="entity"></param>
public bool Create(IStorageEntityRelation entityRelation)
{
if (entityRelation == null)
throw new ArgumentNullException("entityRelation");
var mongoEntityRelation = entityRelation as MongoEntityRelation;
if (mongoEntityRelation == null)
throw new Exception("The specified entityRelation is not mongo storage object.");
MongoTransaction transaction = null;
if (!MongoStaticContext.Context.TransactionInProgress)
transaction = MongoStaticContext.Context.CreateTransaction( true, new MongoTransactionOptions { Isolation= MongoTransactionIsolation.ReadUncommitted});
lock (lockObject)
{
try
{
cachedRelations = null;
var created = MongoStaticContext.Context.EntityRelations.Create(mongoEntityRelation);
var relation = Read(mongoEntityRelation.Name);
var recRepo = new MongoRecordRepository();
var entityRepo = new MongoEntityRepository();
var originEntity = entityRepo.Read(relation.OriginEntityId);
var targetEntity = entityRepo.Read(relation.TargetEntityId);
recRepo.CreateRecordField(originEntity.Name, $"#{relation.Name}_targets", null);
recRepo.CreateRecordField(targetEntity.Name, $"#{relation.Name}_origins", null);
InvalidateRelationIndex(relation);
if (transaction != null)
transaction.Commit();
cachedRelations = null;
return created;
}
catch
{
if (transaction != null)
transaction.Rollback();
throw;
}
}
}
/// <summary>
/// Deletes entity relation
/// </summary>
/// <param name="id"></param>
/// <returns></returns>
public bool Delete(Guid id)
{
lock (lockObject)
{
MongoTransaction transaction = null;
if(!MongoStaticContext.Context.TransactionInProgress)
transaction = MongoStaticContext.Context.CreateTransaction();
try
{
var relation = Read(id);
var recRepo = new MongoRecordRepository();
var entityRepo = new MongoEntityRepository();
var originEntity = entityRepo.Read(relation.OriginEntityId);
var targetEntity = entityRepo.Read(relation.TargetEntityId);
recRepo.RemoveRecordField(originEntity.Name, $"#{relation.Name}_targets");
recRepo.RemoveRecordField(targetEntity.Name, $"#{relation.Name}_origins");
InvalidateRelationIndex(relation, dropIndexes: true);
var result = MongoStaticContext.Context.EntityRelations.Delete(Query.EQ("_id", id));
if (transaction != null)
transaction.Commit();
cachedRelations = null;
return result;
}
catch
{
if (transaction != null)
transaction.Rollback();
throw;
}
}
}