45 lines
1.6 KiB
C#
45 lines
1.6 KiB
C#
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using System.Data.Linq;
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using System.Data.Objects;
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using System.Globalization;
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using System.Web.Resources;
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namespace System.Web.DynamicData.ModelProviders {
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internal class SchemaCreator {
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private static SchemaCreator s_instance = new SchemaCreator();
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public static SchemaCreator Instance {
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get {
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return s_instance;
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}
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}
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public virtual DataModelProvider CreateDataModel(object contextInstance, Func<object> contextFactory) {
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if (IsDataContext(contextInstance.GetType())) {
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return new DLinqDataModelProvider(contextInstance, contextFactory);
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}
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if (IsObjectContext(contextInstance.GetType())) {
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return new EFDataModelProvider(contextInstance, contextFactory);
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}
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throw new InvalidOperationException(String.Format(CultureInfo.CurrentCulture, DynamicDataResources.SchemaCreator_UnknownModel, contextInstance.GetType().FullName));
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}
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public virtual bool ValidDataContextType(Type contextType) {
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//
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return IsDataContext(contextType) || IsObjectContext(contextType);
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}
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internal static bool IsDataContext(Type contextType) {
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return IsValidType<DataContext>(contextType);
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}
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internal static bool IsObjectContext(Type contextType) {
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return IsValidType<ObjectContext>(contextType);
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}
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private static bool IsValidType<T>(Type contextType) where T : class {
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return contextType != null && typeof(T).IsAssignableFrom(contextType);
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}
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}
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}
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