private void PreserveFunctionScalarPropertyMapping(
CommandProcessorContext cpc, FunctionScalarProperty fsp, Property createdComplexTypeProperty)
{
// this represents a path to a scalar Property in the original EntityType properties tree
var propertiesChain = fsp.GetMappedPropertiesList();
// we need to create a corresponding path in changed EntityType
// in order to do that we need to replace first (root) item with a created property from ComplexType...
propertiesChain.RemoveAt(0);
propertiesChain.Insert(0, createdComplexTypeProperty);
// and add the created EntityType complex property as a root of that path
propertiesChain.Insert(0, _createdComplexProperty);
var mf = fsp.GetParentOfType(typeof(ModificationFunction)) as ModificationFunction;
Debug.Assert(
null != mf,
"PreserveFunctionScalarPropertyMapping(): Could not find ancestor of type + " + typeof(ModificationFunction).FullName);
if (null != mf)
{
var cmd = new CreateFunctionScalarPropertyTreeCommand(
mf, propertiesChain, null, fsp.ParameterName.Target, fsp.Version.Value);
CommandProcessor.InvokeSingleCommand(cpc, cmd);
}
}
protected override void InvokeInternal(CommandProcessorContext cpc)
{
Debug.Assert(cpc != null, "InvokeInternal is called when ExitingFunctionScalarProperty is null.");
// safety check, this should never be hit
if (_existingFunctionScalarProperty == null)
{
throw new InvalidOperationException("InvokeInternal is called when ExitingFunctionScalarProperty is null.");
}
if (_propChain == null &&
_pointingNavProp == null &&
_param == null &&
_version != null)
{
// setting new version only
if (string.Compare(_existingFunctionScalarProperty.Version.Value, _version, StringComparison.CurrentCulture) != 0)
{
var mfAncestor = _existingFunctionScalarProperty.GetParentOfType(typeof(ModificationFunction)) as ModificationFunction;
Debug.Assert(
mfAncestor != null,
"Bad attempt to set version on FunctionScalarProperty which does not have a ModificationFunction ancestor");
if (mfAncestor != null)
{
Debug.Assert(
mfAncestor.FunctionType == ModificationFunctionType.Update,
"Bad attempt to set version on FunctionScalarProperty which has a ModificationFunction ancestor whose FunctionType is "
+
mfAncestor.FunctionType.ToString() + ". Should be " + ModificationFunctionType.Update.ToString());
if (mfAncestor.FunctionType == ModificationFunctionType.Update)
{
_existingFunctionScalarProperty.Version.Value = _version;
}
}
}
_updatedFunctionScalarProperty = _existingFunctionScalarProperty;
return;
}
// if not just setting version then need to delete and re-create FunctionScalarProperty
// to allow for changes in properties chain
// where nulls have been passed in, use existing values (except for _pointingNavProp where null
// indicates "use no NavProp for the new property")
var mf = _existingFunctionScalarProperty.GetParentOfType(typeof(ModificationFunction)) as ModificationFunction;
Debug.Assert(mf != null, "Bad attempt to change FunctionScalarProperty which does not have a ModificationFunction ancestor");
if (mf == null)
{
return;
}
var propChain = (_propChain != null ? _propChain : _existingFunctionScalarProperty.GetMappedPropertiesList());
var parameter = (_param != null ? _param : _existingFunctionScalarProperty.ParameterName.Target);
var version = (_version != null ? _version : _existingFunctionScalarProperty.Version.Value);
// now construct delete command for existing FunctionScalarProperty followed by create with new properties
var cmd1 = _existingFunctionScalarProperty.GetDeleteCommand();
var cmd2 =
new CreateFunctionScalarPropertyTreeCommand(mf, propChain, _pointingNavProp, parameter, version);
cmd2.PostInvokeEvent += (o, eventsArgs) =>
{
_updatedFunctionScalarProperty = cmd2.FunctionScalarProperty;
Debug.Assert(
_updatedFunctionScalarProperty != null,
"CreateFunctionScalarPropertyTreeCommand should not result in null FunctionScalarProperty");
};
var cp = new CommandProcessor(cpc, cmd1, cmd2);
try
{
cp.Invoke();
}
finally
{
_updatedFunctionScalarProperty = null;
}
}
private void PreserveFunctionScalarPropertyMapping(
CommandProcessorContext cpc, FunctionScalarProperty fsp, Property createdComplexTypeProperty)
{
// this represents a path to a scalar Property in the original EntityType properties tree
var propertiesChain = fsp.GetMappedPropertiesList();
// we need to create a corresponding path in changed EntityType
// in order to do that we need to replace first (root) item with a created property from ComplexType...
propertiesChain.RemoveAt(0);
propertiesChain.Insert(0, createdComplexTypeProperty);
// and add the created EntityType complex property as a root of that path
propertiesChain.Insert(0, _createdComplexProperty);
var mf = fsp.GetParentOfType(typeof(ModificationFunction)) as ModificationFunction;
Debug.Assert(
null != mf,
"PreserveFunctionScalarPropertyMapping(): Could not find ancestor of type + " + typeof(ModificationFunction).FullName);
if (null != mf)
{
var cmd = new CreateFunctionScalarPropertyTreeCommand(
mf, propertiesChain, null, fsp.ParameterName.Target, fsp.Version.Value);
CommandProcessor.InvokeSingleCommand(cpc, cmd);
}
}
