public void AddColumnMapping(ColumnMappingBuilder columnMappingBuilder)
        {
            Check.NotNull(columnMappingBuilder, "columnMappingBuilder");
            if (!columnMappingBuilder.PropertyPath.Any()
                || _columnMappings.Contains(columnMappingBuilder))
            {
                throw new ArgumentException(Strings.InvalidColumnBuilderArgument("columnBuilderMapping"));
            }

            DebugCheck.NotNull(columnMappingBuilder.ColumnProperty);

            _columnMappings.Add(columnMappingBuilder);

            StructuralTypeMapping structuralTypeMapping = this;
            EdmProperty property;

            // Turn the property path into a mapping fragment nested tree structure.

            var i = 0;
            for (; i < columnMappingBuilder.PropertyPath.Count - 1; i++)
            {
                // The first n-1 properties are complex so we just need to build
                // a corresponding tree of complex type mappings.

                property = columnMappingBuilder.PropertyPath[i];

                var complexPropertyMapping
                    = structuralTypeMapping
                        .Properties
                        .OfType<StorageComplexPropertyMapping>()
                        .SingleOrDefault(pm => ReferenceEquals(pm.EdmProperty, property));

                StorageComplexTypeMapping complexTypeMapping = null;

                if (complexPropertyMapping == null)
                {
                    complexTypeMapping = new StorageComplexTypeMapping(false);
                    complexTypeMapping.AddType(property.ComplexType);

                    complexPropertyMapping = new StorageComplexPropertyMapping(property);
                    complexPropertyMapping.AddTypeMapping(complexTypeMapping);

                    structuralTypeMapping.AddProperty(complexPropertyMapping);
                }

                structuralTypeMapping
                    = complexTypeMapping
                      ?? complexPropertyMapping.TypeMappings.Single();
            }

            // The last property has to be a scalar mapping to the target column.
            // Extract it and create the scalar mapping leaf node, ensuring that we 
            // set the target column.

            property = columnMappingBuilder.PropertyPath[i];

            var scalarPropertyMapping
                = structuralTypeMapping
                    .Properties
                    .OfType<StorageScalarPropertyMapping>()
                    .SingleOrDefault(pm => ReferenceEquals(pm.EdmProperty, property));

            if (scalarPropertyMapping == null)
            {
                scalarPropertyMapping
                    = new StorageScalarPropertyMapping(property, columnMappingBuilder.ColumnProperty);

                structuralTypeMapping.AddProperty(scalarPropertyMapping);

                columnMappingBuilder.SetTarget(scalarPropertyMapping);
            }
            else
            {
                scalarPropertyMapping.ColumnProperty = columnMappingBuilder.ColumnProperty;
            }
        }
Пример #2
0
        public void AddColumnMapping(ColumnMappingBuilder columnMappingBuilder)
        {
            DebugCheck.NotNull(columnMappingBuilder);
            DebugCheck.NotNull(columnMappingBuilder.ColumnProperty);
            Debug.Assert(columnMappingBuilder.PropertyPath.Any());
            Debug.Assert(!_columnMappings.Contains(columnMappingBuilder));

            _columnMappings.Add(columnMappingBuilder);

            IStructuralTypeMapping structuralTypeMapping = this;
            EdmProperty            property;

            // Turn the property path into a mapping fragment nested tree structure.

            var i = 0;

            for (; i < columnMappingBuilder.PropertyPath.Count - 1; i++)
            {
                // The first n-1 properties are complex so we just need to build
                // a corresponding tree of complex type mappings.

                property = columnMappingBuilder.PropertyPath[i];

                var complexPropertyMapping
                    = structuralTypeMapping
                      .Properties
                      .OfType <StorageComplexPropertyMapping>()
                      .SingleOrDefault(pm => ReferenceEquals(pm.EdmProperty, property));

                StorageComplexTypeMapping complexTypeMapping = null;

                if (complexPropertyMapping == null)
                {
                    complexTypeMapping = new StorageComplexTypeMapping(false);
                    complexTypeMapping.AddType(property.ComplexType);

                    complexPropertyMapping = new StorageComplexPropertyMapping(property);
                    complexPropertyMapping.AddTypeMapping(complexTypeMapping);

                    structuralTypeMapping.AddProperty(complexPropertyMapping);
                }

                structuralTypeMapping
                    = complexTypeMapping
                      ?? complexPropertyMapping.TypeMappings.Single();
            }

            // The last property has to be a scalar mapping to the target column.
            // Extract it and create the scalar mapping leaf node, ensuring that we
            // set the target column.

            property = columnMappingBuilder.PropertyPath[i];

            var scalarPropertyMapping
                = structuralTypeMapping
                  .Properties
                  .OfType <StorageScalarPropertyMapping>()
                  .SingleOrDefault(pm => ReferenceEquals(pm.EdmProperty, property));

            if (scalarPropertyMapping == null)
            {
                scalarPropertyMapping
                    = new StorageScalarPropertyMapping(property, columnMappingBuilder.ColumnProperty);

                structuralTypeMapping.AddProperty(scalarPropertyMapping);

                columnMappingBuilder.SetTarget(scalarPropertyMapping);
            }
            else
            {
                scalarPropertyMapping.ColumnProperty = columnMappingBuilder.ColumnProperty;
            }
        }