|
public static GetDefinitionPageReferencePropertyInfo ( |
||
| metaDataType | ||
| Résultat | ||
/// <summary>
/// Returns all folder data given the page id and folder data type
/// </summary>
/// <param name="pageId"></param>
/// <param name="pageFolderType"></param>
/// <returns></returns>
public static IEnumerable <IData> GetFolderData(Guid pageId, Type pageFolderType)
{
//TODO: Consider caching here
ParameterExpression parameterExpression = Expression.Parameter(pageFolderType);
LambdaExpression lambdaExpression = Expression.Lambda(
Expression.Equal(
Expression.Property(
parameterExpression,
PageMetaDataFacade.GetDefinitionPageReferencePropertyInfo(pageFolderType)
),
Expression.Constant(
pageId,
typeof(Guid)
)
),
parameterExpression
);
Expression whereExpression = ExpressionCreator.Where(DataFacade.GetData(pageFolderType).Expression, lambdaExpression);
IEnumerable <IData> dataset = ExpressionHelper.GetCastedObjects <IData>(pageFolderType, whereExpression);
return(dataset);
}
/// <exclude />
public static bool HasFolderData(this IPage page, Type pageFolderType)
{
Verify.ArgumentNotNull(page, "page");
//TODO: Consider caching here
ParameterExpression parameterExpression = Expression.Parameter(pageFolderType);
LambdaExpression lambdaExpression = Expression.Lambda(
Expression.Equal(
Expression.Property(
parameterExpression,
PageMetaDataFacade.GetDefinitionPageReferencePropertyInfo(pageFolderType)
),
Expression.Constant(
page.Id,
typeof(Guid)
)
),
parameterExpression
);
Expression whereExpression = ExpressionCreator.Where(DataFacade.GetData(pageFolderType).Expression, lambdaExpression);
//TODO: Possible optimization here
return(DataFacade.GetData(pageFolderType).Provider.CreateQuery(whereExpression).ToEnumerableOfObjects().Any());
}
/// <exclude />
public static Guid GetMetaDataReferencedPageId(IData metaData)
{
PropertyInfo propertyInfo = PageMetaDataFacade.GetDefinitionPageReferencePropertyInfo(metaData.DataSourceId.InterfaceType);
Guid pageId = (Guid)propertyInfo.GetValue(metaData, null);
return(pageId);
}
