/// <summary>
/// Raises the <see cref="E:Deleted"/> event.
/// </summary>
/// <param name="args">The <see cref="NBear.Web.Data.NBearDataSourceEventArgs"/> instance containing the event data.</param>
internal void OnDeleted(NBearDataSourceEventArgs args)
{
if (Deleted != null)
{
Deleted(this, args);
}
}
/// <summary>
/// Raises the <see cref="E:Saved"/> event.
/// </summary>
/// <param name="args">The <see cref="NBear.Web.Data.NBearDataSourceEventArgs"/> instance containing the event data.</param>
internal void OnSaved(NBearDataSourceEventArgs args)
{
if (Saved != null)
{
Saved(this, args);
}
}
protected override int ExecuteInsert(IDictionary values)
{
Gateway gateway = owner.Gateway;
Type type = Util.GetType(this.owner.TypeName);
object entity = Activator.CreateInstance(type);
foreach (string key in values.Keys)
{
PropertyInfo property = Util.DeepGetProperty(type, key);
if (property.CanWrite)
{
property.SetValue(entity, ChangeType(values[key], property.PropertyType), null);
}
}
NBearDataSourceEventArgs savingArgs = new NBearDataSourceEventArgs(entity);
owner.OnSaving(savingArgs);
entity = savingArgs.Entity;
if (entity == null)
{
return(0);
}
System.Data.Common.DbTransaction tran = null;
try
{
tran = gateway.BeginTransaction();
MethodInfo miSave = GetGatewayMethodInfo("Int32 Save[EntityType](EntityType, System.Data.Common.DbTransaction)");
miSave.MakeGenericMethod(type).Invoke(gateway, new object[] { entity, tran });
tran.Commit();
}
catch
{
tran.Rollback();
throw;
}
finally
{
gateway.CloseTransaction(tran);
}
owner.OnSaved(new NBearDataSourceEventArgs(entity));
this.OnDataSourceViewChanged(EventArgs.Empty);
return(1);
}
protected override int ExecuteDelete(IDictionary keys, IDictionary oldValues)
{
Gateway gateway = owner.Gateway;
Type type = Util.GetType(this.owner.TypeName);
string keyMember = null;
Type keyType = null;
object keyValue = null;
PropertyInfo keyMemberProperty = null;
List <string> keyNames = new List <string>();
List <object> keyValues = new List <object>();
if (keys != null && keys.Count > 0)
{
IEnumerator en = keys.Keys.GetEnumerator();
while (en.MoveNext())
{
keyMember = en.Current.ToString();
keyNames.Add(keyMember);
keyMemberProperty = Util.DeepGetProperty(type, keyMember);
keyValue = ChangeType(keys[keyMember], keyMemberProperty.PropertyType);
keyValues.Add(keyValue);
}
}
else
{
EntityConfiguration ec = MetaDataManager.GetEntityConfiguration(this.owner.TypeName);
foreach (PropertyConfiguration pc in ec.Properties)
{
if (pc.IsPrimaryKey)
{
keyMember = pc.Name;
keyNames.Add(keyMember);
keyType = Util.GetType(pc.PropertyType);
keyValue = ChangeType(oldValues[keyMember], keyType);
keyValues.Add(keyValue);
}
}
}
MethodInfo miFind = GetGatewayMethodInfo("EntityType Find[EntityType](System.Object[])");
object entity = miFind.MakeGenericMethod(type).Invoke(gateway, new object[] { keyValues.ToArray() });
if (entity == null)
{
return(0);
}
//check DBConcurrency
if (this.owner.ConflictDetection == ConflictOptions.CompareAllValues)
{
foreach (string key in oldValues.Keys)
{
if (keyNames.Contains(key))
{
continue;
}
PropertyInfo property = Util.DeepGetProperty(type, key);
if (property != null && property.GetValue(entity, null) != ChangeType(oldValues[key], property.PropertyType))
{
throw new System.Data.DBConcurrencyException("The underlying data has changed.");
}
}
}
NBearDataSourceEventArgs deletingArgs = new NBearDataSourceEventArgs(entity);
owner.OnDeleting(deletingArgs);
entity = deletingArgs.Entity;
if (entity == null)
{
return(0);
}
System.Data.Common.DbTransaction tran = null;
try
{
tran = gateway.BeginTransaction();
MethodInfo miDelete = GetGatewayMethodInfo("Void Delete[EntityType](EntityType, System.Data.Common.DbTransaction)");
miDelete.MakeGenericMethod(type).Invoke(gateway, new object[] { entity, tran });
tran.Commit();
}
catch
{
tran.Rollback();
throw;
}
finally
{
gateway.CloseTransaction(tran);
}
owner.OnDeleted(new NBearDataSourceEventArgs(entity));
this.OnDataSourceViewChanged(EventArgs.Empty);
return(1);
}
protected override int ExecuteUpdate(IDictionary keys, IDictionary values, IDictionary oldValues)
{
Gateway gateway = owner.Gateway;
Type type = Util.GetType(this.owner.TypeName);
string keyMember = null;
Type keyType = null;
object keyValue = null;
PropertyInfo keyMemberProperty = null;
List <string> keyNames = new List <string>();
Entity entity = (Entity)Activator.CreateInstance(type);
if (keys != null && keys.Count > 0)
{
IEnumerator en = keys.Keys.GetEnumerator();
while (en.MoveNext())
{
keyMember = en.Current.ToString();
keyNames.Add(keyMember);
keyMemberProperty = Util.DeepGetProperty(type, keyMember);
keyValue = ChangeType(keys[keyMember], keyMemberProperty.PropertyType);
keyMemberProperty.SetValue(entity, keyValue, null);
}
}
else
{
EntityConfiguration ec = MetaDataManager.GetEntityConfiguration(this.owner.TypeName);
foreach (PropertyConfiguration pc in ec.Properties)
{
if (pc.IsPrimaryKey)
{
keyMember = pc.Name;
keyNames.Add(keyMember);
keyType = Util.GetType(pc.PropertyType);
keyValue = ChangeType(oldValues[keyMember], keyType);
keyMemberProperty = Util.DeepGetProperty(type, keyMember);
keyMemberProperty.SetValue(entity, keyValue, null);
}
}
}
bool changed = false;
entity.Attach();
foreach (string key in values.Keys)
{
if (keyNames.Contains(key))
{
continue;
}
PropertyInfo property = Util.DeepGetProperty(type, key);
if (this.owner.ConflictDetection == ConflictOptions.CompareAllValues)
{
if (property != null && property.GetValue(entity, null) != ChangeType(oldValues[key], property.PropertyType))
{
throw new System.Data.DBConcurrencyException("The underlying data has changed.");
}
}
if (values[key] == oldValues[key])
{
continue;
}
if (property != null && property.CanWrite)
{
changed = true;
property.SetValue(entity, ChangeType(values[key], property.PropertyType), null);
}
}
if (changed)
{
NBearDataSourceEventArgs savingArgs = new NBearDataSourceEventArgs(entity);
owner.OnSaving(savingArgs);
entity = (Entity)savingArgs.Entity;
if (entity == null)
{
return(0);
}
System.Data.Common.DbTransaction tran = null;
try
{
tran = gateway.BeginTransaction();
MethodInfo miSave = GetGatewayMethodInfo("Int32 Save[EntityType](EntityType, System.Data.Common.DbTransaction)");
miSave.MakeGenericMethod(type).Invoke(gateway, new object[] { entity, tran });
tran.Commit();
}
catch
{
tran.Rollback();
throw;
}
finally
{
gateway.CloseTransaction(tran);
}
owner.OnSaved(new NBearDataSourceEventArgs(entity));
this.OnDataSourceViewChanged(EventArgs.Empty);
}
return(changed ? 1 : 0);
}
