private Expression GetInnerSource(OeSelectItem navigationItem, ExpandedNavigationSelectItem item)
{
Type clrEntityType = _visitor.EdmModel.GetClrType(navigationItem.EdmProperty.DeclaringType);
PropertyInfo navigationClrProperty = OeEdmClrHelper.GetPropertyIgnoreCase(clrEntityType, navigationItem.EdmProperty);
Type itemType = OeExpressionHelper.GetCollectionItemType(navigationClrProperty.PropertyType);
if (itemType == null)
{
itemType = navigationClrProperty.PropertyType;
}
var visitor = new OeQueryNodeVisitor(_visitor, Expression.Parameter(itemType));
var expressionBuilder = new OeExpressionBuilder(_joinBuilder, visitor);
Expression innerSource = Expression.Constant(null, typeof(IEnumerable <>).MakeGenericType(itemType));
innerSource = expressionBuilder.ApplyFilter(innerSource, item.FilterOption);
if (item.SkipOption != null || item.TopOption != null)
{
Expression source = Expression.Constant(null, typeof(IEnumerable <>).MakeGenericType(navigationClrProperty.DeclaringType));
innerSource = OeCrossApplyBuilder.Build(source, innerSource, item, navigationItem.Path, expressionBuilder);
}
return(innerSource);
}
private Expression GetInnerSource(OeSelectItem navigationItem, ExpandedNavigationSelectItem item)
{
Type clrEntityType = _visitor.EdmModel.GetClrType(navigationItem.EdmProperty.DeclaringType);
PropertyInfo navigationClrProperty = clrEntityType.GetPropertyIgnoreCase(navigationItem.EdmProperty);
Type itemType = OeExpressionHelper.GetCollectionItemType(navigationClrProperty.PropertyType);
if (itemType == null)
{
itemType = navigationClrProperty.PropertyType;
}
var visitor = new OeQueryNodeVisitor(_visitor, Expression.Parameter(itemType));
var expressionBuilder = new OeExpressionBuilder(_joinBuilder, visitor);
var navigationEdmProperty = (IEdmNavigationProperty)navigationItem.EdmProperty;
if (navigationEdmProperty.ContainsTarget)
{
ModelBuilder.ManyToManyJoinDescription joinDescription = _visitor.EdmModel.GetManyToManyJoinDescription(navigationEdmProperty);
navigationEdmProperty = joinDescription.TargetNavigationProperty;
}
IEdmEntitySet innerEntitySet = OeEdmClrHelper.GetEntitySet(_visitor.EdmModel, navigationEdmProperty);
Expression innerSource = OeEnumerableStub.CreateEnumerableStubExpression(itemType, innerEntitySet);
innerSource = expressionBuilder.ApplyFilter(innerSource, item.FilterOption);
if (item.SkipOption != null || item.TopOption != null)
{
Expression source = OeEnumerableStub.CreateEnumerableStubExpression(navigationClrProperty.DeclaringType, (IEdmEntitySet)_navigationItem.EntitySet);
innerSource = OeCrossApplyBuilder.Build(source, innerSource, item, navigationItem.Path, expressionBuilder);
}
return(innerSource);
}
private Expression GetInnerSource(OeNavigationSelectItem navigationItem)
{
if (navigationItem.Parent == null)
{
throw new InvalidOperationException("Inner source cannot exist for root item");
}
Type clrEntityType = _edmModel.GetClrType(navigationItem.EdmProperty.DeclaringType);
PropertyInfo navigationClrProperty = clrEntityType.GetPropertyIgnoreCase(navigationItem.EdmProperty);
Type itemType = OeExpressionHelper.GetCollectionItemTypeOrNull(navigationClrProperty.PropertyType) ?? navigationClrProperty.PropertyType;
var visitor = new OeQueryNodeVisitor(_joinBuilder.Visitor, Expression.Parameter(itemType));
var expressionBuilder = new OeExpressionBuilder(_joinBuilder, visitor);
IEdmNavigationProperty navigationProperty = navigationItem.EdmProperty;
if (navigationItem.EdmProperty.ContainsTarget)
{
ModelBuilder.ManyToManyJoinDescription joinDescription = _edmModel.GetManyToManyJoinDescription(navigationProperty);
navigationProperty = joinDescription.TargetNavigationProperty;
}
IEdmEntitySet innerEntitySet = OeEdmClrHelper.GetEntitySet(_edmModel, navigationProperty);
Expression innerSource = OeEnumerableStub.CreateEnumerableStubExpression(itemType, innerEntitySet);
ExpandedNavigationSelectItem item = navigationItem.NavigationSelectItem;
innerSource = expressionBuilder.ApplyFilter(innerSource, item.FilterOption);
long?top = GetTop(navigationItem, item.TopOption);
if (top == null && item.SkipOption == null)
{
return(innerSource);
}
OrderByClause orderByClause = item.OrderByOption;
if (navigationItem.PageSize > 0)
{
orderByClause = OeSkipTokenParser.GetUniqueOrderBy(navigationItem.EntitySet, item.OrderByOption, null);
}
var entitySet = (IEdmEntitySet)navigationItem.Parent.EntitySet;
Expression source = OeEnumerableStub.CreateEnumerableStubExpression(navigationClrProperty.DeclaringType, entitySet);
var crossApplyBuilder = new OeCrossApplyBuilder(_edmModel, expressionBuilder);
return(crossApplyBuilder.Build(source, innerSource, navigationItem.Path, orderByClause, item.SkipOption, top));
}
