public MethodCallExpression Build(IEdmModel edmModel, Expression outerSource, Expression innerSource, IReadOnlyList <IEdmNavigationProperty> joinPath, IEdmNavigationProperty navigationProperty) { if (navigationProperty.ContainsTarget) { ModelBuilder.ManyToManyJoinDescription joinDescription = edmModel.GetManyToManyJoinDescription(navigationProperty); IEdmEntitySet joinEntitySet = OeEdmClrHelper.GetEntitySet(edmModel, joinDescription.JoinNavigationProperty); Expression joinSource = OeEnumerableStub.CreateEnumerableStubExpression(joinDescription.JoinClassType, joinEntitySet); outerSource = Build(outerSource, joinSource, joinPath, joinDescription.JoinNavigationProperty, false); AddJoinPath(joinPath, joinDescription.JoinNavigationProperty); var fixedJoinPath = new IEdmNavigationProperty[joinPath.Count + 1]; for (int i = 0; i < joinPath.Count; i++) { fixedJoinPath[i] = joinPath[i]; } fixedJoinPath[fixedJoinPath.Length - 1] = joinDescription.JoinNavigationProperty; outerSource = Build(outerSource, innerSource, fixedJoinPath, joinDescription.TargetNavigationProperty, true); _joinPaths.RemoveAt(_joinPaths.Count - 1); } else { outerSource = Build(outerSource, innerSource, joinPath, navigationProperty, false); } AddJoinPath(joinPath, navigationProperty); return((MethodCallExpression)outerSource); }
public MethodCallExpression Build(Expression outer, Expression inner, ODataPath odataPath, OrderByClause orderBy, long?skip, long?top) { var segment = (NavigationPropertySegment)odataPath.LastSegment; IEdmNavigationProperty navigationProperty = segment.NavigationProperty; if (navigationProperty.ContainsTarget) { ModelBuilder.ManyToManyJoinDescription joinDescription = _edmModel.GetManyToManyJoinDescription(navigationProperty); IEdmEntitySet joinEntitySet = OeEdmClrHelper.GetEntitySet(_edmModel, joinDescription.JoinNavigationProperty); outer = OeEnumerableStub.CreateEnumerableStubExpression(joinDescription.JoinClassType, joinEntitySet); navigationProperty = joinDescription.TargetNavigationProperty; } Type outerType = OeExpressionHelper.GetCollectionItemType(outer.Type); ParameterExpression outerParameter = Expression.Parameter(outerType, outerType.Name); inner = new ReplaceParameterVisitor(outerParameter).Visit(inner); //replace $it Expression subquery = CreateWhereExpression(outerParameter, inner, navigationProperty); subquery = _expressionBuilder.ApplyOrderBy(subquery, orderBy); subquery = _expressionBuilder.ApplySkip(subquery, skip, odataPath); subquery = _expressionBuilder.ApplyTake(subquery, top, odataPath); Type innerType = OeExpressionHelper.GetCollectionItemType(inner.Type); MethodInfo selectManyMethdoInfo = OeMethodInfoHelper.GetSelectManyMethodInfo(outerType, innerType); return(Expression.Call(selectManyMethdoInfo, outer, Expression.Lambda(subquery, outerParameter))); }
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)); }