/// <summary>
/// Extract the information from the supplied exception
/// and stores the information as a new ErrorLog
/// </summary>
public static ErrorLog Logg <T>(Exception e, bool suppressMessage = false)
{
if (ExceptionHandler.HasCaught(e))
{
return(ExceptionHandler.GetErrorLog(e) as ErrorLog);
}
var error = new ErrorLog
{
UserName = DwarfContext <T> .GetConfiguration().UserService.CurrentUser != null ? DwarfContext <T> .GetConfiguration().UserService.CurrentUser.UserName : "",
TimeStamp = DateTime.Now,
Message = e.Message,
Type = e.GetType().ToString(),
StackTrace = e.StackTrace,
Exception = e,
};
if (e.InnerException != null)
{
error.InnerException = Logg <T>(e.InnerException, suppressMessage);
}
DwarfContext <T> .GetDatabase().Insert <T, ErrorLog>(error);
if (!suppressMessage)
{
ExceptionHandler.Logg(error);
}
return(error);
}
/// <summary>
/// See base
/// </summary>
public void Delete()
{
if (!IsSaved)
{
return;
}
try
{
DbContextHelper <T> .BeginOperation();
OnBeforeDeleteInternal();
OnBeforeDelete();
DwarfContext <T> .GetDatabase().Delete(this);
DbContextHelper <T> .FinalizeOperation(false);
OnAfterDeleteInternal();
OnAfterDelete();
}
catch (Exception e)
{
DbContextHelper <T> .FinalizeOperation(true);
DwarfContext <T> .GetConfiguration().ErrorLogService.Logg(e);
throw;
}
finally
{
DbContextHelper <T> .EndOperation();
}
}
/// <summary>
/// Returns an object of the type T with the supplied Id
/// </summary>
protected static T Load(params WhereCondition <T>[] conditions)
{
if (!typeof(T).Implements <ICompositeId>())
{
throw new InvalidOperationException("This method may only be used for ICompositeId types");
}
return(DwarfContext <T> .GetDatabase().Select(conditions));
}
/// <summary>
/// Returns an object of the type T with the supplied Id
/// </summary>
public static T Load(Guid id)
{
if (typeof(T).Implements <ICompositeId>())
{
throw new InvalidOperationException("This method may not be used for ICompositeId types");
}
return(DwarfContext <T> .GetDatabase().Select <T>(id));
}
private void OnBeforeDeleteInternal()
{
//We want to persist all the Inverse OneToManyCollection upon deletion. Let's remove all lists that doesn't
//need persistance first (all objects therein will be deleted in the database via delete cascades anyways)
foreach (var pi in DwarfHelper.GetOneToManyProperties(this))
{
var propertyAtt = OneToManyAttribute.GetAttribute(pi.ContainedProperty);
if (propertyAtt == null)
{
throw new NullReferenceException(pi.Name + " is missing the OneToMany attribute...");
}
if (!propertyAtt.IsInverse)
{
continue;
}
var obj = (IDwarfList)pi.GetValue(this);
var owningProp = oneToManyAlternateKeys.ContainsKey(pi.Name) ? oneToManyAlternateKeys[pi.Name] : GetType().Name;
obj.Cast <IDwarf>().ForEachX(x => PropertyHelper.SetValue(x, owningProp, null));
obj.SaveAllInternal <T>();
}
if (DbContextHelper <T> .DbContext.IsAuditLoggingSuspended || DwarfContext <T> .GetConfiguration().AuditLogService == null)
{
return;
}
var traces = (from ep in DwarfHelper.GetDBProperties(GetType()).Where(x => !x.Name.Equals("Id"))
let oldValue = originalValues[ep.Name]
where oldValue != null && (oldValue is string? !string.IsNullOrEmpty(oldValue.ToString()) : true)
select new AuditLogEventTrace {
PropertyName = ep.Name, OriginalValue = oldValue
}).ToArray();
var collectionTraces = (from ep in DwarfHelper.GetGemListProperties(GetType())
let oldValue = (IGemList)ep.GetValue(this)
where oldValue != null && oldValue.Count > 0
select new AuditLogEventTrace {
PropertyName = ep.Name, OriginalValue = oldValue
}).ToArray();
var many2ManyTraces = (from ep in DwarfHelper.GetManyToManyProperties(GetType())
let oldValue = ep.GetValue(this)
where oldValue != null && ((IList)oldValue).Count > 0
select new AuditLogEventTrace {
PropertyName = ep.Name, OriginalValue = oldValue
}).ToArray();
DwarfContext <T> .GetConfiguration().AuditLogService.Logg(this, AuditLogTypes.Deleted, traces.Union(collectionTraces).Union(many2ManyTraces).ToArray());
}
/// <summary>
/// Returns all AuditLog events for the supplied object
/// </summary>
public static List <AuditLog> GetAllEvents <T>(Guid id)
{
return(DwarfContext <T> .GetDatabase().SelectReferencing <T, AuditLog>
(
new WhereCondition <AuditLog> {
Column = x => x.ClassType, Value = typeof(T).Name
},
new WhereCondition <AuditLog> {
Column = x => x.ObjectId, Value = id
}
));
}
/// <summary>
/// Returns the "Created" AuditLog event for the supplied object
/// </summary>
public static AuditLog GetCreatedEvent <T>(T obj) where T : Dwarf <T>, new()
{
return(DwarfContext <T> .GetDatabase().SelectReferencing <T, AuditLog>
(
new WhereCondition <AuditLog> {
Column = x => x.ClassType, Value = obj.GetType().Name
},
new WhereCondition <AuditLog> {
Column = x => x.AuditLogType, Value = AuditLogTypes.Created
},
new WhereCondition <AuditLog> {
Column = x => x.ObjectId, Value = obj.Id
}
).FirstOrDefault());
}
/// <summary>
/// Stores an AuditLog object for the ongoing transaction
/// </summary>
public static IAuditLog Logg <T>(IDwarf obj, AuditLogTypes auditLogType, params AuditLogEventTrace[] auditUpdateEvents)
{
var type = DwarfHelper.DeProxyfy(obj);
if (type.Implements <IAuditLogless>() || type.Implements <IAuditLog>())
{
return(null);
}
var al = new AuditLog
{
ClassType = type.Name,
AuditLogType = auditLogType,
UserName = DwarfContext <T> .GetConfiguration().UserService.CurrentUser != null ? DwarfContext <T> .GetConfiguration().UserService.CurrentUser.UserName : string.Empty,
TimeStamp = DateTime.Now,
ObjectValue = obj.ToString(),
};
if (!type.Implements <ICompositeId>())
{
al.ObjectId = obj.Id.ToString();
}
else
{
foreach (var ep in DwarfHelper.GetPKProperties(type))
{
al.ObjectId += string.Format("[{0}: {1}]", ep.Name, ep.GetValue(obj));
}
}
if (auditLogType != AuditLogTypes.Created)
{
al.AuditDetails = "<?xml version=\"1.0\"?><Properties>";
foreach (var auditUpdateEvent in auditUpdateEvents)
{
al.AuditDetails += auditUpdateEvent.ToXml().ToString();
}
al.AuditDetails += "</Properties>";
}
DwarfContext <T> .GetDatabase().Insert <T, AuditLog>(al);
return(al);
}
/// <summary>
/// Restores the object's properties to their original values
/// </summary>
public void Refresh()
{
//Fetch the original values from the database (bypass the cache...)
var originalObject = DwarfContext <T> .GetDatabase().SelectReferencing <T>(new QueryBuilder().Select <T>().From <T>().Where(this, Cfg.PKProperties[DwarfHelper.DeProxyfy(this)]), false, true).FirstOrDefault();
if (originalObject != null)
{
foreach (var ep in DwarfHelper.GetDBProperties(GetType()))
{
SetOriginalValue(ep.Name, ep.GetValue(originalObject));
}
}
//Else should we throw an exception since the object has been deleted from the DB?
Reset();
}
private void CreateAuditLog(AuditLogTypes auditLogType, IEnumerable <AuditLogEventTrace> propertyTraces)
{
if (DbContextHelper <T> .DbContext.IsAuditLoggingSuspended || DwarfContext <T> .GetConfiguration().AuditLogService == null)
{
return;
}
if (auditLogType == AuditLogTypes.Updated)
{
var traces = propertyTraces.Union(CreateTraceEventsForManyToMany()).ToArray();
if (traces.Length > 0)
{
DwarfContext <T> .GetConfiguration().AuditLogService.Logg(this, auditLogType, traces);
}
}
else if (auditLogType == AuditLogTypes.Created)
{
DwarfContext <T> .GetConfiguration().AuditLogService.Logg(this, auditLogType);
}
}
internal static IEnumerable <Type> GetValidTypes <T>()
{
var baseType = DeProxyfy(typeof(T));
if (baseType != typeof(T))
{
throw new InvalidOperationException("T is a proxy class... Looks like you need to specify the complete namespace");
}
var typeList = baseType.Assembly.GetTypes().Where(type => type.Implements <IDwarf>() && !type.IsAbstract).ToList();
if (DwarfContext <T> .GetConfiguration().AuditLogService is AuditLogService <T> )
{
typeList.Add(typeof(AuditLog));
}
if (DwarfContext <T> .GetConfiguration().ErrorLogService is ErrorLogService <T> )
{
typeList.Add(typeof(ErrorLog));
}
return(typeList);
}
/// <summary>
/// A quick way to insert a lot of objects at the same time. No audit logs are created though
/// </summary>
protected static void BulkInsert(IEnumerable <T> objects)
{
try
{
DbContextHelper <T> .BeginOperation();
DwarfContext <T> .GetDatabase().BulkInsert(objects);
DbContextHelper <T> .FinalizeOperation(false);
}
catch (Exception e)
{
DbContextHelper <T> .FinalizeOperation(true);
DwarfContext <T> .GetConfiguration().ErrorLogService.Logg(e);
throw;
}
finally
{
DbContextHelper <T> .EndOperation();
}
}
/// <summary>
/// Deletes a ManyToMany relationship
/// </summary>
private static void DeleteManyToMany(IDwarf owner, IDwarf child, string alternateTableName = null)
{
try
{
DbContextHelper <T> .BeginOperation();
DwarfContext <T> .GetDatabase().DeleteManyToMany <T>(owner, child, alternateTableName);
DbContextHelper <T> .FinalizeOperation(false);
}
catch (Exception e)
{
DbContextHelper <T> .FinalizeOperation(true);
DwarfContext <T> .GetConfiguration().ErrorLogService.Logg(e);
throw;
}
finally
{
DbContextHelper <T> .EndOperation();
}
}
internal QueryBuilderLight Where <T>(string column, object value)
{
where.Append(string.Format("{0} [{1}].[{2}] = {3} ", (where.Length == 0 ? "WHERE " : "AND "), typeof(T).Name, column, DwarfContext <T> .GetDatabase().ValueToSqlString(value)));
return(this);
}
internal QueryBuilderLight Where(string column, object value, Type type)
{
where.Append(string.Format("{0} {1} = {2} ", (where.Length == 0 ? "WHERE " : "AND "), column, DwarfContext.GetDatabase(type).ValueToSqlString(value)));
return(this);
}
public static IDwarfConfiguration GetConfiguration <T>()
{
return(DwarfContext <T> .GetConfiguration());
}
/// <summary>
/// Executes a SQL statement against a connection object.
/// </summary>
public void ExecuteNonQuery(string query)
{
DwarfContext <T> .GetDatabase().ExecuteNonQuery <T>(query);
}
/// <summary>
/// Executes the query and returns the first column of the first row in the result set returned by the query. All other columns and rows are ignored.
/// </summary>
public TY ExecuteScalar <TY>(string query)
{
return(DwarfContext <T> .GetDatabase().ExecuteScalar <T, TY>(query));
}
/// <summary>
///Returns an object collection of the type T where
/// the supplied value matches the the target values via a common many to many table
/// </summary>
private static List <TY> LoadManyToManyRelation <TY>(IDwarf ownerObject, string alternateTableName = null) where TY : Dwarf <TY>, new()
{
return(DwarfContext <T> .GetDatabase().SelectManyToMany <TY>(ownerObject, alternateTableName));
}
/// <summary>
/// Executes a SQL statement against a connection object.
/// </summary>
public void ExecuteNonQuery(QueryBuilder queryBuilder)
{
DwarfContext <T> .GetDatabase().ExecuteNonQuery <T>(queryBuilder);
}
/// <summary>
/// See base
/// </summary>
public static List <AuditLog> LoadAll <T>()
{
return(DwarfContext <T> .GetDatabase().SelectReferencing <T, AuditLog>());
}
/// <summary>
/// Returns an object collection of the type T where
/// the object's value(s) matches the supplied value(s)
/// </summary>
protected static List <TY> LoadReferencing <TY>(params WhereCondition <TY>[] conditions) where TY : Dwarf <TY>, new()
{
return(DwarfContext <T> .GetDatabase().SelectReferencing <T, TY>(conditions));
}
/// <summary>
/// Returns an object collection of the type T where
/// the object's value(s) matches the supplied value(s)
/// </summary>
protected static List <TY> LoadReferencing <TY>(QueryBuilder queryBuilder, bool overrideSelect = true) where TY : Dwarf <TY>, new()
{
return(DwarfContext <T> .GetDatabase().SelectReferencing <TY>(queryBuilder, overrideSelect));
}
/// <summary>
/// Returns an object collection of the type T where
/// the object's value(s) matches the supplied value(s)
/// </summary>
public static List <T> LoadReferencing(QueryBuilder queryBuilder)
{
return(DwarfContext <T> .GetDatabase().SelectReferencing <T>(queryBuilder));
}
/// <summary>
/// Executes a SQL statement against a connection object and returns a list of dynamic objects
/// </summary>
public List <dynamic> ExecuteQuery(string query)
{
return(DwarfContext <T> .GetDatabase().ExecuteCustomQuery <T>(query));
}
/// <summary>
/// Returns an object collection of the type T where
/// the object's value(s) matches the supplied value(s)
/// </summary>
protected static List <TY> LoadReferencing <TY>(QueryMergers queryMerger, params QueryBuilder[] queryBuilders) where TY : Dwarf <TY>, new()
{
return(DwarfContext <T> .GetDatabase().SelectReferencing <TY>(queryMerger, queryBuilders));
}
/// <summary>
/// See base
/// </summary>
public static AuditLog Load <T>(Guid id)
{
return(DwarfContext <T> .GetDatabase().Select <T, AuditLog>(id));
}
/// <summary>
/// Executes a SQL statement against a connection object and returns a list of dynamic objects
/// </summary>
public List <dynamic> ExecuteQuery(QueryBuilder queryBuilder)
{
return(DwarfContext <T> .GetDatabase().ExecuteCustomQuery <T>(queryBuilder));
}
/// <summary>
/// Executes the query and returns the first column of the first row in the result set returned by the query. All other columns and rows are ignored.
/// </summary>
public TY ExecuteScalar <TY>(QueryBuilder queryBuilder)
{
return(DwarfContext <T> .GetDatabase().ExecuteScalar <T, TY>(queryBuilder));
}
/// <summary>
/// See base
/// </summary>
public void Save()
{
if (isDeleted)
{
return;
}
try
{
DbContextHelper <T> .BeginOperation();
if (!Id.HasValue)
{
Id = internallyProvidedCustomId.HasValue ? internallyProvidedCustomId : Guid.NewGuid();
}
OnBeforeSave();
var faultyForeignKeys = FaultyForeignKeys(this).ToList();
if (faultyForeignKeys.Count > 0)
{
DbContextHelper <T> .RegisterInvalidObject(this, faultyForeignKeys);
DbContextHelper <T> .FinalizeOperation(false);
return;
}
else
{
DbContextHelper <T> .UnRegisterInvalidObject(this);
}
var auditLogType = AuditLogTypes.Updated;
var traces = CreateTraceEventsForProperties();
if (IsSaved)
{
if (traces.Length > 0) //IsDirty
{
DwarfContext <T> .GetDatabase().Update(this, traces.Select(x => PropertyHelper.GetProperty <T>(x.PropertyName)));
}
}
else
{
auditLogType = AuditLogTypes.Created;
DwarfContext <T> .GetDatabase().Insert <T, T>(this, Id);
}
CreateAuditLog(auditLogType, traces);
PersistOneToManyCollections();
PersistManyToManyCollections();
OnAfterSave();
DbContextHelper <T> .FinalizeOperation(false);
OnAfterSaveInternal();
}
catch (Exception e)
{
DbContextHelper <T> .FinalizeOperation(true);
DwarfContext <T> .GetConfiguration().ErrorLogService.Logg(e);
throw;
}
finally
{
DbContextHelper <T> .EndOperation();
}
}
