// Adds element to 'columns' for every element of 'properties'. Also returns a map from properties
// at this level to the corresponding columns.
private static Dictionary <EdmProperty, EntityDataSourcePropertyColumn> AddPropertyColumns(List <EntityDataSourceColumn> columns, MetadataWorkspace ocWorkspace, EntityDataSourceMemberPath parent, IEnumerable <EdmProperty> properties, ReadOnlyCollection <EdmMember> interestingMembers)
{
Dictionary <EdmProperty, EntityDataSourcePropertyColumn> result = new Dictionary <EdmProperty, EntityDataSourcePropertyColumn>();
foreach (EdmProperty property in properties)
{
bool isLocallyInteresting = interestingMembers.Contains(property);
EntityDataSourceMemberPath prefix = new EntityDataSourceMemberPath(ocWorkspace, parent, property, isLocallyInteresting);
EdmType propertyType = property.TypeUsage.EdmType;
// add column for this entity property
EntityDataSourcePropertyColumn propertyColumn = new EntityDataSourcePropertyColumn(prefix);
columns.Add(propertyColumn);
result.Add(property, propertyColumn);
if (propertyType.BuiltInTypeKind == BuiltInTypeKind.ComplexType)
{
// add nested properties
// prepend the property name to the members of the complex type
AddPropertyColumns(columns, ocWorkspace, prefix, ((ComplexType)propertyType).Properties, interestingMembers);
}
// other property types are not currently supported (or possible in EF V1 for that matter)
}
return(result);
}
internal EntityDataSourceViewSchema(EntityDataSourceWrapperCollection wrappers)
{
DataColumn column;
List <DataColumn> keys = new List <DataColumn>();
PropertyDescriptorCollection properties = wrappers.GetItemProperties(null);
MetadataWorkspace workspace = wrappers.Context.MetadataWorkspace;
foreach (EntityDataSourceWrapperPropertyDescriptor property in properties)
{
Type propertyType = property.PropertyType;
column = ConstructColumn(property);
column.AllowDBNull = property.Column.IsNullable;
EntityDataSourcePropertyColumn propertyColumn = property.Column as EntityDataSourcePropertyColumn;
if (null != propertyColumn && propertyColumn.IsKey)
{
keys.Add(column);
}
Columns.Add(column);
}
this.PrimaryKey = keys.ToArray();
}
