// <summary>
// Initialize a new function command. Initializes the command object.
// </summary>
// <param name="functionMapping"> Function mapping metadata </param>
// <param name="translator"> Translator </param>
// <param name="stateEntries"> State entries handled by this operation. </param>
// <param name="stateEntry"> 'Root' state entry being handled by this function. </param>
internal FunctionUpdateCommand(
ModificationFunctionMapping functionMapping,
UpdateTranslator translator,
ReadOnlyCollection<IEntityStateEntry> stateEntries,
ExtractedStateEntry stateEntry)
: this(translator, stateEntries, stateEntry,
translator.GenerateCommandDefinition(functionMapping).CreateCommand())
{
DebugCheck.NotNull(functionMapping);
DebugCheck.NotNull(translator);
DebugCheck.NotNull(stateEntries);
}
private DbModificationCommandTree ConvertInternal(
DbDeleteCommandTree commandTree)
{
this._currentFunctionMapping = this._entityTypeModificationFunctionMapping != null ? this._entityTypeModificationFunctionMapping.DeleteFunctionMapping : this._associationSetModificationFunctionMapping.DeleteFunctionMapping;
return((DbModificationCommandTree) new DbDeleteCommandTree(commandTree.MetadataWorkspace, commandTree.DataSpace, commandTree.Target, commandTree.Predicate.Accept <DbExpression>((DbExpressionVisitor <DbExpression>) this)));
}
private void ConfigureParameters(ModificationFunctionMapping modificationStoredProcedureMapping)
{
foreach (var keyValue in _parameterNames)
{
var propertyPath = keyValue.Key.PropertyPath;
var parameterName = keyValue.Value.Item1;
var originalValueParameterName = keyValue.Value.Item2;
var parameterBindings
= modificationStoredProcedureMapping
.ParameterBindings
.Where(
pb => // First, try and match scalar/complex/many-to-many binding
(((pb.MemberPath.AssociationSetEnd == null) ||
pb.MemberPath.AssociationSetEnd.ParentAssociationSet.ElementType.IsManyToMany()) &&
propertyPath.Equals(
new PropertyPath(
pb.MemberPath.Members.OfType <EdmProperty>().Select(m => m.GetClrPropertyInfo()))))
||
// Otherwise, try and match IA FK bindings
((propertyPath.Count == 2) &&
(pb.MemberPath.AssociationSetEnd != null) &&
pb.MemberPath.Members.First().GetClrPropertyInfo().IsSameAs(propertyPath.Last()) &&
pb.MemberPath.AssociationSetEnd.ParentAssociationSet.AssociationSetEnds
.Select(ae => ae.CorrespondingAssociationEndMember.GetClrPropertyInfo())
.Where(pi => pi != null)
.Any(pi => pi.IsSameAs(propertyPath.First()))))
.ToList();
if (parameterBindings.Count == 1)
{
var parameterBinding = parameterBindings.Single();
if (!string.IsNullOrWhiteSpace(originalValueParameterName))
{
if (parameterBinding.IsCurrent)
{
throw Error.ModificationFunctionParameterNotFoundOriginal(
propertyPath,
modificationStoredProcedureMapping.Function.FunctionName);
}
}
parameterBinding.Parameter.Name = parameterName;
_configuredParameters.Add(parameterBinding.Parameter);
}
else if (parameterBindings.Count == 2)
{
var parameterBinding
= ((parameterBindings
.Select(pb => pb.IsCurrent)
.Distinct()
.Count() == 1) && // same value for both
parameterBindings
.All(pb => pb.MemberPath.AssociationSetEnd != null))
? !keyValue.Key.IsRightKey
? parameterBindings.First()
: parameterBindings.Last()
: parameterBindings.Single(pb => pb.IsCurrent);
parameterBinding.Parameter.Name = parameterName;
_configuredParameters.Add(parameterBinding.Parameter);
if (!string.IsNullOrWhiteSpace(originalValueParameterName))
{
parameterBinding = parameterBindings.Single(pb => !pb.IsCurrent);
parameterBinding.Parameter.Name = originalValueParameterName;
_configuredParameters.Add(parameterBinding.Parameter);
}
}
else
{
throw Error.ModificationFunctionParameterNotFound(
propertyPath,
modificationStoredProcedureMapping.Function.FunctionName);
}
}
var unconfiguredParameters
= modificationStoredProcedureMapping
.Function
.Parameters
.Except(_configuredParameters);
foreach (var parameter in unconfiguredParameters)
{
parameter.Name
= modificationStoredProcedureMapping
.Function
.Parameters
.Except(new[] { parameter })
.UniquifyName(parameter.Name);
}
}
// Walks through all parameter bindings in the function mapping and binds the parameters to the
// requested properties of the given state entry.
private static void BindFunctionParameters(
UpdateTranslator translator, ExtractedStateEntry stateEntry, ModificationFunctionMapping functionMapping,
FunctionUpdateCommand command, Dictionary<AssociationEndMember, IEntityStateEntry> currentReferenceEnds,
Dictionary<AssociationEndMember, IEntityStateEntry> originalReferenceEnds)
{
// bind all parameters
foreach (var parameterBinding in functionMapping.ParameterBindings)
{
PropagatorResult result;
// extract value
if (null != parameterBinding.MemberPath.AssociationSetEnd)
{
// find the relationship entry corresponding to the navigation
var endMember = parameterBinding.MemberPath.AssociationSetEnd.CorrespondingAssociationEndMember;
IEntityStateEntry relationshipEntry;
var hasTarget = parameterBinding.IsCurrent
? currentReferenceEnds.TryGetValue(endMember, out relationshipEntry)
: originalReferenceEnds.TryGetValue(endMember, out relationshipEntry);
if (!hasTarget)
{
if (endMember.RelationshipMultiplicity
== RelationshipMultiplicity.One)
{
var entitySetName = stateEntry.Source.EntitySet.Name;
var associationSetName = parameterBinding.MemberPath.AssociationSetEnd.ParentAssociationSet.Name;
throw new UpdateException(
Strings.Update_MissingRequiredRelationshipValue(entitySetName, associationSetName), null,
command.GetStateEntries(translator).Cast<ObjectStateEntry>().Distinct());
}
else
{
result = PropagatorResult.CreateSimpleValue(PropagatorFlags.NoFlags, null);
}
}
else
{
// get the actual value
var relationshipResult = parameterBinding.IsCurrent
? translator.RecordConverter.ConvertCurrentValuesToPropagatorResult(
relationshipEntry, ModifiedPropertiesBehavior.AllModified)
: translator.RecordConverter.ConvertOriginalValuesToPropagatorResult(
relationshipEntry, ModifiedPropertiesBehavior.AllModified);
var endResult = relationshipResult.GetMemberValue(endMember);
var keyProperty = (EdmProperty)parameterBinding.MemberPath.Members[0];
result = endResult.GetMemberValue(keyProperty);
}
}
else
{
// walk through the member path to find the appropriate propagator results
result = parameterBinding.IsCurrent ? stateEntry.Current : stateEntry.Original;
for (var i = parameterBinding.MemberPath.Members.Count; i > 0;)
{
--i;
var member = parameterBinding.MemberPath.Members[i];
result = result.GetMemberValue(member);
}
}
// create DbParameter
command.SetParameterValue(result, parameterBinding, translator);
}
// Add rows affected parameter
command.RegisterRowsAffectedParameter(functionMapping.RowsAffectedParameter);
}
private ModificationFunctionMapping GenerateFunctionMapping(
ModificationOperator modificationOperator,
EntitySetBase entitySetBase,
EntityTypeBase entityTypeBase,
DbDatabaseMapping databaseMapping,
IEnumerable <EdmProperty> parameterProperties,
IEnumerable <Tuple <ModificationFunctionMemberPath, EdmProperty> > iaFkProperties,
IList <ColumnMappingBuilder> columnMappings,
IEnumerable <EdmProperty> resultProperties = null,
string functionNamePrefix = null)
{
DebugCheck.NotNull(entitySetBase);
DebugCheck.NotNull(entityTypeBase);
DebugCheck.NotNull(databaseMapping);
DebugCheck.NotNull(parameterProperties);
DebugCheck.NotNull(iaFkProperties);
DebugCheck.NotNull(columnMappings);
var useOriginalValues = modificationOperator == ModificationOperator.Delete;
var parameterMappingGenerator
= new FunctionParameterMappingGenerator(_providerManifest);
var parameterBindings
= parameterMappingGenerator
.Generate(
modificationOperator == ModificationOperator.Insert &&
IsTableSplitDependent(entityTypeBase, databaseMapping)
? ModificationOperator.Update
: modificationOperator,
parameterProperties,
columnMappings,
new List <EdmProperty>(),
useOriginalValues)
.Concat(
parameterMappingGenerator
.Generate(iaFkProperties, useOriginalValues))
.ToList();
var parameters
= parameterBindings.Select(b => b.Parameter).ToList();
UniquifyParameterNames(parameters);
var functionPayload
= new EdmFunctionPayload
{
ReturnParameters = new FunctionParameter[0],
Parameters = parameters.ToArray(),
IsComposable = false
};
var function
= databaseMapping.Database
.AddFunction(
(functionNamePrefix ?? entityTypeBase.Name) + "_" + modificationOperator.ToString(),
functionPayload);
var functionMapping
= new ModificationFunctionMapping(
entitySetBase,
entityTypeBase,
function,
parameterBindings,
null,
resultProperties != null
? resultProperties.Select(
p => new ModificationFunctionResultBinding(
columnMappings.First(cm => cm.PropertyPath.SequenceEqual(new[] { p })).ColumnProperty.Name,
p))
: null);
return(functionMapping);
}
public void WriteAssociationSetMapping_should_write_modification_function_mapping()
{
var fixture = new Fixture();
var entityType = new EntityType("E", "N", DataSpace.CSpace);
var entitySet = new EntitySet("ES", "S", null, null, entityType);
new EntityContainer("EC", DataSpace.SSpace).AddEntitySetBase(entitySet);
var associationSet = new AssociationSet("AS", new AssociationType("A", XmlConstants.ModelNamespace_3, false, DataSpace.CSpace));
var associationEndMember1 = new AssociationEndMember("Source", new EntityType("E", "N", DataSpace.CSpace));
associationSet.AddAssociationSetEnd(new AssociationSetEnd(entitySet, associationSet, associationEndMember1));
var associationEndMember2 = new AssociationEndMember("Target", new EntityType("E", "N", DataSpace.CSpace));
associationSet.AddAssociationSetEnd(new AssociationSetEnd(entitySet, associationSet, associationEndMember2));
var storageModificationFunctionMapping
= new ModificationFunctionMapping(
associationSet,
associationSet.ElementType,
new EdmFunction("F", "N", DataSpace.SSpace, new EdmFunctionPayload()),
new[]
{
new ModificationFunctionParameterBinding(
new FunctionParameter(
"P",
TypeUsage.Create(PrimitiveType.GetEdmPrimitiveType(PrimitiveTypeKind.Int32)),
ParameterMode.In),
new ModificationFunctionMemberPath(
new EdmMember[]
{
new EdmProperty("K"),
associationEndMember1
},
associationSet),
true),
new ModificationFunctionParameterBinding(
new FunctionParameter(
"P",
TypeUsage.Create(PrimitiveType.GetEdmPrimitiveType(PrimitiveTypeKind.Int32)),
ParameterMode.In),
new ModificationFunctionMemberPath(
new EdmMember[]
{
new EdmProperty("K"),
associationEndMember2
},
associationSet),
false)
},
null,
null);
var associationSetMapping
= new AssociationSetMapping(
associationSet,
entitySet)
{
SourceEndMapping
= new EndPropertyMapping
{
AssociationEnd = associationEndMember1
},
TargetEndMapping
= new EndPropertyMapping
{
AssociationEnd = associationEndMember2
},
ModificationFunctionMapping = new AssociationSetModificationFunctionMapping(
associationSet,
storageModificationFunctionMapping,
storageModificationFunctionMapping)
};
fixture.Writer.WriteAssociationSetMappingElement(associationSetMapping);
Assert.Equal(
@"<AssociationSetMapping Name=""AS"" TypeName="".A"" StoreEntitySet=""E"">
<EndProperty Name=""Source"" />
<EndProperty Name=""Target"" />
<ModificationFunctionMapping>
<InsertFunction FunctionName=""N.F"">
<EndProperty Name=""Source"">
<ScalarProperty Name=""K"" ParameterName=""P"" Version=""Current"" />
</EndProperty>
<EndProperty Name=""Target"">
<ScalarProperty Name=""K"" ParameterName=""P"" Version=""Original"" />
</EndProperty>
</InsertFunction>
<DeleteFunction FunctionName=""N.F"">
<EndProperty Name=""Source"">
<ScalarProperty Name=""K"" ParameterName=""P"" Version=""Current"" />
</EndProperty>
<EndProperty Name=""Target"">
<ScalarProperty Name=""K"" ParameterName=""P"" Version=""Original"" />
</EndProperty>
</DeleteFunction>
</ModificationFunctionMapping>
</AssociationSetMapping>",
fixture.ToString());
}
// Walks through all parameter bindings in the function mapping and binds the parameters to the
// requested properties of the given state entry.
private static void BindFunctionParameters(
UpdateTranslator translator, ExtractedStateEntry stateEntry, ModificationFunctionMapping functionMapping,
FunctionUpdateCommand command, Dictionary <AssociationEndMember, IEntityStateEntry> currentReferenceEnds,
Dictionary <AssociationEndMember, IEntityStateEntry> originalReferenceEnds)
{
// bind all parameters
foreach (var parameterBinding in functionMapping.ParameterBindings)
{
PropagatorResult result;
// extract value
if (null != parameterBinding.MemberPath.AssociationSetEnd)
{
// find the relationship entry corresponding to the navigation
var endMember = parameterBinding.MemberPath.AssociationSetEnd.CorrespondingAssociationEndMember;
IEntityStateEntry relationshipEntry;
var hasTarget = parameterBinding.IsCurrent
? currentReferenceEnds.TryGetValue(endMember, out relationshipEntry)
: originalReferenceEnds.TryGetValue(endMember, out relationshipEntry);
if (!hasTarget)
{
if (endMember.RelationshipMultiplicity
== RelationshipMultiplicity.One)
{
var entitySetName = stateEntry.Source.EntitySet.Name;
var associationSetName = parameterBinding.MemberPath.AssociationSetEnd.ParentAssociationSet.Name;
throw new UpdateException(
Strings.Update_MissingRequiredRelationshipValue(entitySetName, associationSetName), null,
command.GetStateEntries(translator).Cast <ObjectStateEntry>().Distinct());
}
else
{
result = PropagatorResult.CreateSimpleValue(PropagatorFlags.NoFlags, null);
}
}
else
{
// get the actual value
var relationshipResult = parameterBinding.IsCurrent
? translator.RecordConverter.ConvertCurrentValuesToPropagatorResult(
relationshipEntry, ModifiedPropertiesBehavior.AllModified)
: translator.RecordConverter.ConvertOriginalValuesToPropagatorResult(
relationshipEntry, ModifiedPropertiesBehavior.AllModified);
var endResult = relationshipResult.GetMemberValue(endMember);
var keyProperty = (EdmProperty)parameterBinding.MemberPath.Members[0];
result = endResult.GetMemberValue(keyProperty);
}
}
else
{
// walk through the member path to find the appropriate propagator results
result = parameterBinding.IsCurrent ? stateEntry.Current : stateEntry.Original;
for (var i = parameterBinding.MemberPath.Members.Count; i > 0;)
{
--i;
var member = parameterBinding.MemberPath.Members[i];
result = result.GetMemberValue(member);
}
}
// create DbParameter
command.SetParameterValue(result, parameterBinding, translator);
}
// Add rows affected parameter
command.RegisterRowsAffectedParameter(functionMapping.RowsAffectedParameter);
}
