public void Can_get_flattened_properties_for_nested_mapping()
{
var mappingFragment
= new MappingFragment(
new EntitySet(),
new EntityTypeMapping(
new EntitySetMapping(
new EntitySet(),
new EntityContainerMapping(new EntityContainer("C", DataSpace.CSpace)))), false);
Assert.Empty(mappingFragment.ColumnMappings);
var columnProperty = new EdmProperty("C", TypeUsage.Create(new PrimitiveType()
{
DataSpace = DataSpace.SSpace
}));
var property1 = EdmProperty.CreateComplex("P1", new ComplexType("CT"));
var property2 = new EdmProperty("P2");
var columnMappingBuilder1 = new ColumnMappingBuilder(columnProperty, new[] { property1, property2 });
mappingFragment.AddColumnMapping(columnMappingBuilder1);
var columnMappingBuilder2 = new ColumnMappingBuilder(columnProperty, new[] { property2 });
mappingFragment.AddColumnMapping(columnMappingBuilder2);
var columnMappingBuilders = mappingFragment.FlattenedProperties.ToList();
Assert.Equal(2, columnMappingBuilders.Count());
Assert.True(columnMappingBuilder1.PropertyPath.SequenceEqual(columnMappingBuilders.First().PropertyPath));
Assert.True(columnMappingBuilder2.PropertyPath.SequenceEqual(columnMappingBuilders.Last().PropertyPath));
}
public void Can_update_scalar_column_mapping()
{
var mappingFragment
= new MappingFragment(
new EntitySet(),
new EntityTypeMapping(
new EntitySetMapping(
new EntitySet(),
new EntityContainerMapping(new EntityContainer("C", DataSpace.CSpace)))), false);
var property = new EdmProperty("P");
mappingFragment.AddColumnMapping(new ColumnMappingBuilder(new EdmProperty("C", TypeUsage.Create(new PrimitiveType()
{
DataSpace = DataSpace.SSpace
})), new[] { property }));
var columnProperty = new EdmProperty("C'", TypeUsage.Create(new PrimitiveType()
{
DataSpace = DataSpace.SSpace
}));
var columnMappingBuilder = new ColumnMappingBuilder(columnProperty, new[] { property });
mappingFragment.AddColumnMapping(columnMappingBuilder);
var scalarPropertyMapping = (ScalarPropertyMapping)mappingFragment.PropertyMappings.Single();
Assert.Same(columnProperty, scalarPropertyMapping.Column);
Assert.Same(property, scalarPropertyMapping.Property);
}
public void Can_get_flattened_properties_for_nested_mapping()
{
var mappingFragment
= new MappingFragment(
new EntitySet(),
new EntityTypeMapping(
new EntitySetMapping(
new EntitySet(),
new EntityContainerMapping(new EntityContainer("C", DataSpace.CSpace)))), false);
Assert.Empty(mappingFragment.ColumnMappings);
var columnProperty = new EdmProperty("C", TypeUsage.Create(new PrimitiveType() { DataSpace = DataSpace.SSpace }));
var property1 = EdmProperty.CreateComplex("P1", new ComplexType("CT"));
var property2 = new EdmProperty("P2");
var columnMappingBuilder1 = new ColumnMappingBuilder(columnProperty, new[] { property1, property2 });
mappingFragment.AddColumnMapping(columnMappingBuilder1);
var columnMappingBuilder2 = new ColumnMappingBuilder(columnProperty, new[] { property2 });
mappingFragment.AddColumnMapping(columnMappingBuilder2);
var columnMappingBuilders = mappingFragment.FlattenedProperties.ToList();
Assert.Equal(2, columnMappingBuilders.Count());
Assert.True(columnMappingBuilder1.PropertyPath.SequenceEqual(columnMappingBuilders.First().PropertyPath));
Assert.True(columnMappingBuilder2.PropertyPath.SequenceEqual(columnMappingBuilders.Last().PropertyPath));
}
public void Can_remove_complex_column_mapping()
{
var mappingFragment
= new MappingFragment(
new EntitySet(),
new EntityTypeMapping(
new EntitySetMapping(
new EntitySet(),
new EntityContainerMapping(new EntityContainer("C", DataSpace.CSpace)))), false);
Assert.Empty(mappingFragment.ColumnMappings);
var columnProperty = new EdmProperty("C", TypeUsage.Create(new PrimitiveType()
{
DataSpace = DataSpace.SSpace
}));
var property1 = EdmProperty.CreateComplex("P1", new ComplexType("CT"));
var property2 = new EdmProperty("P2");
var columnMappingBuilder = new ColumnMappingBuilder(columnProperty, new[] { property1, property2 });
mappingFragment.AddColumnMapping(columnMappingBuilder);
Assert.Same(columnMappingBuilder, mappingFragment.ColumnMappings.Single());
Assert.NotEmpty(mappingFragment.PropertyMappings);
mappingFragment.RemoveColumnMapping(columnMappingBuilder);
Assert.Empty(mappingFragment.ColumnMappings);
Assert.Empty(mappingFragment.PropertyMappings);
}
public void GetComplexPropertyMappings_should_return_all_complex_property_mappings_for_type()
{
var databaseMapping = new DbDatabaseMapping()
.Initialize(new EdmModel(DataSpace.CSpace), new EdmModel(DataSpace.SSpace));
var entitySet = new EntitySet
{
Name = "ES"
};
var entitySetMapping = databaseMapping.AddEntitySetMapping(entitySet);
var entityTypeMapping = new EntityTypeMapping(null);
entitySetMapping.AddTypeMapping(entityTypeMapping);
var entityTypeMappingFragment = new MappingFragment(entitySet, entityTypeMapping, false);
entityTypeMapping.AddFragment(entityTypeMappingFragment);
var complexType = new ComplexType("C");
var propertyMapping1
= new ColumnMappingBuilder(
new EdmProperty("C", TypeUsage.Create(new PrimitiveType() { DataSpace = DataSpace.SSpace })),
new[]
{
EdmProperty.CreateComplex("P1", complexType),
EdmProperty.CreatePrimitive("P", PrimitiveType.GetEdmPrimitiveType(PrimitiveTypeKind.String))
});
var type = typeof(object);
complexType.GetMetadataProperties().SetClrType(type);
entityTypeMappingFragment.AddColumnMapping(propertyMapping1);
var propertyMapping2
= new ColumnMappingBuilder(
new EdmProperty("C", TypeUsage.Create(new PrimitiveType() { DataSpace = DataSpace.SSpace })),
new List<EdmProperty>
{
EdmProperty.CreateComplex("P3", complexType),
EdmProperty.CreatePrimitive(
"P2", PrimitiveType.GetEdmPrimitiveType(PrimitiveTypeKind.String)),
});
entityTypeMappingFragment.AddColumnMapping(propertyMapping2);
Assert.Equal(2, databaseMapping.GetComplexPropertyMappings(typeof(object)).Count());
}
public void Cannot_add_invalid_column_mapping_builder()
{
var mappingFragment
= new MappingFragment(
new EntitySet(),
new EntityTypeMapping(
new EntitySetMapping(
new EntitySet(),
new EntityContainerMapping(new EntityContainer("C", DataSpace.CSpace)))), false);
Assert.Equal(
"columnMappingBuilder",
Assert.Throws <ArgumentNullException>(
() => mappingFragment.AddColumnMapping(null)).ParamName);
Assert.Equal(
Strings.InvalidColumnBuilderArgument("columnBuilderMapping"),
Assert.Throws <ArgumentException>(
() => mappingFragment.AddColumnMapping(
new ColumnMappingBuilder(new EdmProperty("S"), new List <EdmProperty>()))).Message);
}
public void Can_update_complex_column_mapping()
{
var mappingFragment
= new MappingFragment(
new EntitySet(),
new EntityTypeMapping(
new EntitySetMapping(
new EntitySet(),
new EntityContainerMapping(new EntityContainer("C", DataSpace.CSpace)))), false);
var property1 = EdmProperty.CreateComplex("P1", new ComplexType("CT"));
var property2 = new EdmProperty("P2");
var columnMappingBuilder1 = new ColumnMappingBuilder(new EdmProperty("C", TypeUsage.Create(new PrimitiveType()
{
DataSpace = DataSpace.SSpace
})), new[] { property1, property2 });
mappingFragment.AddColumnMapping(columnMappingBuilder1);
var columnProperty = new EdmProperty("C", TypeUsage.Create(new PrimitiveType()
{
DataSpace = DataSpace.SSpace
}));
var columnMappingBuilder2 = new ColumnMappingBuilder(columnProperty, new[] { property1, property2 });
mappingFragment.AddColumnMapping(columnMappingBuilder2);
var complexPropertyMapping = (ComplexPropertyMapping)mappingFragment.PropertyMappings.Single();
var typeMapping = complexPropertyMapping.TypeMappings.Single();
var scalarPropertyMapping = (ScalarPropertyMapping)typeMapping.PropertyMappings.Single();
Assert.Same(columnProperty, scalarPropertyMapping.Column);
Assert.Same(property2, scalarPropertyMapping.Property);
}
public void Cannot_add_duplicate_column_mapping_builder()
{
var mappingFragment
= new MappingFragment(
new EntitySet(),
new EntityTypeMapping(
new EntitySetMapping(
new EntitySet(),
new EntityContainerMapping(new EntityContainer("C", DataSpace.CSpace)))), false);
var columnMappingBuilder =
new ColumnMappingBuilder(new EdmProperty("S", TypeUsage.Create(new PrimitiveType()
{
DataSpace = DataSpace.SSpace
})), new[] { new EdmProperty("S") });
mappingFragment.AddColumnMapping(columnMappingBuilder);
Assert.Equal(
Strings.InvalidColumnBuilderArgument("columnBuilderMapping"),
Assert.Throws <ArgumentException>(
() => mappingFragment.AddColumnMapping(columnMappingBuilder)).Message);
}
public void GetPropertyMapping_should_return_mapping_with_path()
{
var entityTypeMapping = new EntityTypeMapping(null);
var propertyFoo = EdmProperty.CreateComplex("Foo", new ComplexType("CT"));
var propertyBar = EdmProperty.CreatePrimitive("Bar", PrimitiveType.GetEdmPrimitiveType(PrimitiveTypeKind.String));
var entityPropertyMapping
= new ColumnMappingBuilder(
new EdmProperty("C", TypeUsage.Create(new PrimitiveType() { DataSpace = DataSpace.SSpace })),
new[]
{
propertyFoo,
propertyBar,
});
var entityTypeMappingFragment
= new MappingFragment(new EntitySet(), entityTypeMapping, false);
entityTypeMappingFragment.AddColumnMapping(entityPropertyMapping);
entityTypeMapping.AddFragment(entityTypeMappingFragment);
Assert.Same(entityPropertyMapping, entityTypeMapping.GetPropertyMapping(propertyFoo, propertyBar));
}
public void Can_update_complex_column_mapping()
{
var mappingFragment
= new MappingFragment(
new EntitySet(),
new EntityTypeMapping(
new EntitySetMapping(
new EntitySet(),
new EntityContainerMapping(new EntityContainer("C", DataSpace.CSpace)))), false);
var property1 = EdmProperty.CreateComplex("P1", new ComplexType("CT"));
var property2 = new EdmProperty("P2");
var columnMappingBuilder1 = new ColumnMappingBuilder(new EdmProperty("C", TypeUsage.Create(new PrimitiveType() { DataSpace = DataSpace.SSpace })), new[] { property1, property2 });
mappingFragment.AddColumnMapping(columnMappingBuilder1);
var columnProperty = new EdmProperty("C", TypeUsage.Create(new PrimitiveType() { DataSpace = DataSpace.SSpace }));
var columnMappingBuilder2 = new ColumnMappingBuilder(columnProperty, new[] { property1, property2 });
mappingFragment.AddColumnMapping(columnMappingBuilder2);
var complexPropertyMapping = (ComplexPropertyMapping)mappingFragment.PropertyMappings.Single();
var typeMapping = complexPropertyMapping.TypeMappings.Single();
var scalarPropertyMapping = (ScalarPropertyMapping)typeMapping.PropertyMappings.Single();
Assert.Same(columnProperty, scalarPropertyMapping.Column);
Assert.Same(property2, scalarPropertyMapping.Property);
}
// <summary>
// Makes sure only the required property mappings are present
// </summary>
private static void ConfigureTypeMappings(
TableMapping tableMapping,
Dictionary<EntityType, EntityTypeMapping> rootMappings,
EntityType entityType,
MappingFragment propertiesTypeMappingFragment,
MappingFragment conditionTypeMappingFragment)
{
var existingPropertyMappings =
new List<ColumnMappingBuilder>(
propertiesTypeMappingFragment.ColumnMappings.Where(pm => !pm.ColumnProperty.IsPrimaryKeyColumn));
var existingConditions = new List<ConditionPropertyMapping>(propertiesTypeMappingFragment.ColumnConditions);
foreach (var columnMapping in from cm in tableMapping.ColumnMappings
from pm in cm.PropertyMappings
where pm.EntityType == entityType
select new
{
cm.Column,
Property = pm
})
{
if (columnMapping.Property.PropertyPath != null
&&
!IsRootTypeMapping(
rootMappings, columnMapping.Property.EntityType, columnMapping.Property.PropertyPath))
{
var existingPropertyMapping =
propertiesTypeMappingFragment.ColumnMappings.SingleOrDefault(
x => x.PropertyPath == columnMapping.Property.PropertyPath);
if (existingPropertyMapping != null)
{
existingPropertyMappings.Remove(existingPropertyMapping);
}
else
{
existingPropertyMapping
= new ColumnMappingBuilder(columnMapping.Column, columnMapping.Property.PropertyPath);
propertiesTypeMappingFragment.AddColumnMapping(existingPropertyMapping);
}
}
if (columnMapping.Property.Conditions != null)
{
foreach (var condition in columnMapping.Property.Conditions)
{
if (conditionTypeMappingFragment.ColumnConditions.Contains(condition))
{
existingConditions.Remove(condition);
}
else if (!entityType.Abstract)
{
conditionTypeMappingFragment.AddConditionProperty(condition);
}
}
}
}
// Any leftover mappings are removed
foreach (var leftoverPropertyMapping in existingPropertyMappings)
{
propertiesTypeMappingFragment.RemoveColumnMapping(leftoverPropertyMapping);
}
foreach (var leftoverCondition in existingConditions)
{
conditionTypeMappingFragment.RemoveConditionProperty(leftoverCondition);
}
if (entityType.Abstract)
{
propertiesTypeMappingFragment.ClearConditions();
}
}
public void Cannot_add_invalid_column_mapping_builder()
{
var mappingFragment
= new MappingFragment(
new EntitySet(),
new EntityTypeMapping(
new EntitySetMapping(
new EntitySet(),
new EntityContainerMapping(new EntityContainer("C", DataSpace.CSpace)))), false);
Assert.Equal(
"columnMappingBuilder",
Assert.Throws<ArgumentNullException>(
() => mappingFragment.AddColumnMapping(null)).ParamName);
Assert.Equal(
Strings.InvalidColumnBuilderArgument("columnBuilderMapping"),
Assert.Throws<ArgumentException>(
() => mappingFragment.AddColumnMapping(
new ColumnMappingBuilder(new EdmProperty("S"), new List<EdmProperty>()))).Message);
}
BuildEntityTypeMapping(EntitySetMapping storeEntitySetMapping, SimpleMappingContext mappingContext, EntitySet storeEntitySet)
{
Debug.Assert(storeEntitySetMapping != null, "storeEntitySetMapping != null");
Debug.Assert(mappingContext != null, "mappingContext != null");
var entityType = storeEntitySetMapping.EntitySet.ElementType;
var entityTypeMapping = new EntityTypeMapping(storeEntitySetMapping);
entityTypeMapping.AddType(entityType);
var mappingFragment = new MappingFragment(storeEntitySet, entityTypeMapping, false);
entityTypeMapping.AddFragment(mappingFragment);
foreach (var propertyMapping in BuildPropertyMapping(storeEntitySet.ElementType, mappingContext))
{
mappingFragment.AddColumnMapping(propertyMapping);
}
return entityTypeMapping;
}
public void Generate(
EntityType entityType,
IEnumerable<EdmProperty> properties,
EntitySetMapping entitySetMapping,
MappingFragment entityTypeMappingFragment,
IList<EdmProperty> propertyPath,
bool createNewColumn)
{
DebugCheck.NotNull(entityType);
DebugCheck.NotNull(properties);
DebugCheck.NotNull(entityTypeMappingFragment);
DebugCheck.NotNull(propertyPath);
var rootDeclaredProperties = entityType.GetRootType().DeclaredProperties;
foreach (var property in properties)
{
if (property.IsComplexType
&& propertyPath.Any(
p => p.IsComplexType
&& (p.ComplexType == property.ComplexType)))
{
throw Error.CircularComplexTypeHierarchy();
}
propertyPath.Add(property);
if (property.IsComplexType)
{
Generate(
entityType,
property.ComplexType.Properties,
entitySetMapping,
entityTypeMappingFragment,
propertyPath,
createNewColumn);
}
else
{
var tableColumn
= entitySetMapping.EntityTypeMappings
.SelectMany(etm => etm.MappingFragments)
.SelectMany(etmf => etmf.ColumnMappings)
.Where(pm => pm.PropertyPath.SequenceEqual(propertyPath))
.Select(pm => pm.ColumnProperty)
.FirstOrDefault();
if (tableColumn == null || createNewColumn)
{
var columnName
= string.Join("_", propertyPath.Select(p => p.Name));
tableColumn
= MapTableColumn(
property,
columnName,
!rootDeclaredProperties.Contains(propertyPath.First()));
entityTypeMappingFragment.Table.AddColumn(tableColumn);
if (entityType.KeyProperties().Contains(property))
{
entityTypeMappingFragment.Table.AddKeyMember(tableColumn);
}
}
entityTypeMappingFragment.AddColumnMapping(
new ColumnMappingBuilder(tableColumn, propertyPath.ToList()));
}
propertyPath.Remove(property);
}
}
public void Generate_should_exclude_sgp_properties_from_corresponding_function_mappings()
{
var functionMappingGenerator
= new ModificationFunctionMappingGenerator(ProviderRegistry.Sql2008_ProviderManifest);
var databaseMapping
= new DbDatabaseMapping()
.Initialize(new EdmModel(DataSpace.CSpace), new EdmModel(DataSpace.SSpace));
var entityType = new EntityType("E", "N", DataSpace.CSpace);
var intProperty = EdmProperty.CreatePrimitive("Id", PrimitiveType.GetEdmPrimitiveType(PrimitiveTypeKind.Int32));
intProperty.SetStoreGeneratedPattern(StoreGeneratedPattern.Identity);
entityType.AddKeyMember(intProperty);
var stringProperty = EdmProperty.CreatePrimitive("Name", PrimitiveType.GetEdmPrimitiveType(PrimitiveTypeKind.String));
stringProperty.SetStoreGeneratedPattern(StoreGeneratedPattern.Computed);
entityType.AddMember(stringProperty);
var entitySetMapping
= databaseMapping.AddEntitySetMapping(
databaseMapping.Model.AddEntitySet("ES", entityType));
var storageEntityTypeMapping
= new EntityTypeMapping(
new EntitySetMapping(new EntitySet(), databaseMapping.EntityContainerMappings.Single()));
storageEntityTypeMapping.AddType(entityType);
var storageMappingFragment = new MappingFragment(new EntitySet(), storageEntityTypeMapping, false);
storageMappingFragment.AddColumnMapping(
new ColumnMappingBuilder(new EdmProperty("C0", TypeUsage.Create(new PrimitiveType() { DataSpace = DataSpace.SSpace })), new[] { intProperty }));
storageMappingFragment.AddColumnMapping(
new ColumnMappingBuilder(new EdmProperty("C1", TypeUsage.Create(new PrimitiveType() { DataSpace = DataSpace.SSpace })), new[] { stringProperty }));
storageEntityTypeMapping.AddFragment(storageMappingFragment);
entitySetMapping.AddTypeMapping(storageEntityTypeMapping);
functionMappingGenerator.Generate(entityType, databaseMapping);
var modificationFunctionMapping
= entitySetMapping.ModificationFunctionMappings.Single();
Assert.NotNull(modificationFunctionMapping);
var functionMapping = modificationFunctionMapping.InsertFunctionMapping;
Assert.NotNull(functionMapping);
Assert.Equal(0, functionMapping.ParameterBindings.Count);
Assert.Equal(2, functionMapping.ResultBindings.Count);
var function = functionMapping.Function;
Assert.NotNull(function);
Assert.Equal("E_Insert", function.Name);
Assert.Equal(0, function.Parameters.Count);
functionMapping = modificationFunctionMapping.UpdateFunctionMapping;
Assert.NotNull(functionMapping);
Assert.Equal(1, functionMapping.ParameterBindings.Count);
Assert.Equal(1, functionMapping.ResultBindings.Count);
function = functionMapping.Function;
Assert.NotNull(function);
Assert.Equal("E_Update", function.Name);
Assert.Equal(1, function.Parameters.Count);
functionMapping = modificationFunctionMapping.DeleteFunctionMapping;
Assert.NotNull(functionMapping);
Assert.Equal(1, functionMapping.ParameterBindings.Count);
Assert.Null(functionMapping.ResultBindings);
function = modificationFunctionMapping.DeleteFunctionMapping.Function;
Assert.NotNull(function);
Assert.Equal("E_Delete", function.Name);
Assert.Equal(1, function.Parameters.Count);
}
public static void MovePropertyMapping(
DbDatabaseMapping databaseMapping,
IEnumerable<EntitySet> entitySets,
MappingFragment fromFragment,
MappingFragment toFragment,
ColumnMappingBuilder propertyMappingBuilder,
bool requiresUpdate,
bool useExisting)
{
// move the column from the formTable to the table in fragment
if (requiresUpdate && fromFragment.Table != toFragment.Table)
{
UpdatePropertyMapping(databaseMapping, entitySets, GetColumnMappingIndex(databaseMapping), propertyMappingBuilder, fromFragment.Table, toFragment.Table, useExisting);
}
// move the propertyMapping
fromFragment.RemoveColumnMapping(propertyMappingBuilder);
toFragment.AddColumnMapping(propertyMappingBuilder);
}
public void Can_remove_complex_column_mapping()
{
var mappingFragment
= new MappingFragment(
new EntitySet(),
new EntityTypeMapping(
new EntitySetMapping(
new EntitySet(),
new EntityContainerMapping(new EntityContainer("C", DataSpace.CSpace)))), false);
Assert.Empty(mappingFragment.ColumnMappings);
var columnProperty = new EdmProperty("C", TypeUsage.Create(new PrimitiveType() { DataSpace = DataSpace.SSpace }));
var property1 = EdmProperty.CreateComplex("P1", new ComplexType("CT"));
var property2 = new EdmProperty("P2");
var columnMappingBuilder = new ColumnMappingBuilder(columnProperty, new[] { property1, property2 });
mappingFragment.AddColumnMapping(columnMappingBuilder);
Assert.Same(columnMappingBuilder, mappingFragment.ColumnMappings.Single());
Assert.NotEmpty(mappingFragment.PropertyMappings);
mappingFragment.RemoveColumnMapping(columnMappingBuilder);
Assert.Empty(mappingFragment.ColumnMappings);
Assert.Empty(mappingFragment.PropertyMappings);
}
public void Cannot_add_duplicate_column_mapping_builder()
{
var mappingFragment
= new MappingFragment(
new EntitySet(),
new EntityTypeMapping(
new EntitySetMapping(
new EntitySet(),
new EntityContainerMapping(new EntityContainer("C", DataSpace.CSpace)))), false);
var columnMappingBuilder =
new ColumnMappingBuilder(new EdmProperty("S", TypeUsage.Create(new PrimitiveType() { DataSpace = DataSpace.SSpace })), new[] { new EdmProperty("S") });
mappingFragment.AddColumnMapping(columnMappingBuilder);
Assert.Equal(
Strings.InvalidColumnBuilderArgument("columnBuilderMapping"),
Assert.Throws<ArgumentException>(
() => mappingFragment.AddColumnMapping(columnMappingBuilder)).Message);
}
public static void CopyPropertyMappingToFragment(
ColumnMappingBuilder propertyMappingBuilder, MappingFragment fragment,
Func<EdmProperty, bool> isCompatible, bool useExisting)
{
// Ensure column is in the fragment's table
var column = TablePrimitiveOperations.IncludeColumn(fragment.Table, propertyMappingBuilder.ColumnProperty, isCompatible, useExisting);
// Add the property mapping
fragment.AddColumnMapping(
new ColumnMappingBuilder(column, propertyMappingBuilder.PropertyPath));
}
public void Can_add_scalar_column_mapping()
{
var mappingFragment
= new MappingFragment(
new EntitySet(),
new EntityTypeMapping(
new EntitySetMapping(
new EntitySet(),
new EntityContainerMapping(new EntityContainer("C", DataSpace.CSpace)))), false);
Assert.Empty(mappingFragment.ColumnMappings);
var columnProperty = new EdmProperty("C", TypeUsage.Create(new PrimitiveType() { DataSpace = DataSpace.SSpace }));
var property = new EdmProperty("P");
var columnMappingBuilder = new ColumnMappingBuilder(columnProperty, new[] { property });
mappingFragment.AddColumnMapping(columnMappingBuilder);
Assert.Same(columnMappingBuilder, mappingFragment.ColumnMappings.Single());
var scalarPropertyMapping = (ScalarPropertyMapping)mappingFragment.PropertyMappings.Single();
Assert.Same(columnProperty, scalarPropertyMapping.Column);
Assert.Same(property, scalarPropertyMapping.Property);
}