private void UpdateIdentities(OeLinq2DbTable table, int lastIndex)
{
if (table.Identities.Count == 0)
{
return;
}
foreach (IEdmNavigationPropertyBinding navigationBinding in _orderedTableTypes[lastIndex].EdmEntitySet.NavigationPropertyBindings)
{
if (navigationBinding.NavigationProperty.IsPrincipal() || navigationBinding.NavigationProperty.Partner == null)
{
for (int j = 0; j <= lastIndex; j++)
{
if (_orderedTableTypes[j].EdmEntitySet == navigationBinding.Target)
{
List <PropertyInfo> dependentProperties = GetDependentProperties(_orderedTableTypes[j].ClrTableType, navigationBinding.NavigationProperty);
OeLinq2DbTable targetTable = GetTable(_orderedTableTypes[j].ClrTableType);
targetTable.UpdateIdentities(dependentProperties[0], table.Identities);
if (targetTable.IsKey(dependentProperties[0]))
{
foreach (PropertyInfo dependentProperty in GetDependentProperties(dependentProperties[0], _orderedTableTypes, j))
{
GetTable(dependentProperty.DeclaringType).UpdateIdentities(dependentProperty, table.Identities);
}
}
break;
}
}
}
}
}
public int SaveChanges(DataConnection dataConnection)
{
int count = 0;
for (int i = _orderedTableTypes.Length - 1; i >= 0; i--)
{
OeLinq2DbTable table = GetTable(_orderedTableTypes[i].ClrTableType);
if (table != null)
{
count += table.SaveInserted(dataConnection);
UpdateIdentities(table, i);
count += table.SaveUpdated(dataConnection);
}
}
for (int i = 0; i < _orderedTableTypes.Length; i++)
{
OeLinq2DbTable table = GetTable(_orderedTableTypes[i].ClrTableType);
if (table != null)
{
count += table.SaveDeleted(dataConnection);
}
}
return(count);
}
internal OeLinq2DbTable <T> GetTable <T>() where T : class
{
if (_tables.TryGetValue(typeof(T), out OeLinq2DbTable value))
{
return((OeLinq2DbTable <T>)value);
}
var table = new OeLinq2DbTable <T>();
_tables.Add(typeof(T), table);
return(table);
}
public OeLinq2DbTable <T> GetTable <T>()
{
OeLinq2DbTable value;
if (_tables.TryGetValue(typeof(T), out value))
{
return((OeLinq2DbTable <T>)value);
}
var table = new OeLinq2DbTable <T>();
_tables.Add(typeof(T), table);
return(table);
}
private void UpdateIdentities(OeLinq2DbTable table, List <ClrTypeEdmSet> clrTypeEdmSetList, int lastIndex)
{
if (table.Identities.Count == 0)
{
return;
}
foreach (IEdmNavigationPropertyBinding navigationBinding in clrTypeEdmSetList[lastIndex].EdmSet.NavigationPropertyBindings)
{
if (navigationBinding.NavigationProperty.IsPrincipal())
{
for (int j = 0; j <= lastIndex; j++)
{
if (clrTypeEdmSetList[j].EdmSet == navigationBinding.Target)
{
var dependentProperties = GetDependentProperties(clrTypeEdmSetList[j].ClrType, navigationBinding.NavigationProperty);
GetTable(clrTypeEdmSetList[j].ClrType).UpdateIdentities(dependentProperties.Single(), table.Identities);
break;
}
}
}
}
}
public int SaveChanges(IEdmModel edmModel, OeEntitySetMetaAdapterCollection entitySetMetaAdapters, DataConnection dataConnection)
{
List <ClrTypeEdmSet> clrTypeEdmSetList = GetClrTypeEdmSetList(edmModel, entitySetMetaAdapters);
int count = 0;
for (int i = clrTypeEdmSetList.Count - 1; i >= 0; i--)
{
OeLinq2DbTable table = GetTable(clrTypeEdmSetList[i].ClrType);
count += table.SaveInserted(dataConnection);
UpdateIdentities(table, clrTypeEdmSetList, i);
count += table.SaveUpdated(dataConnection);
}
for (int i = 0; i < clrTypeEdmSetList.Count; i++)
{
OeLinq2DbTable table = GetTable(clrTypeEdmSetList[i].ClrType);
count += table.SaveDeleted(dataConnection);
}
return(count);
}