Exemplo n.º 1
0
        public static Db.OeBoundFunctionParameter CreateBoundFunctionParameter(OeQueryContext queryContext)
        {
            var expressionBuilder = new OeExpressionBuilder(queryContext.JoinBuilder);

            Type          sourceEntityType = queryContext.EntitySetAdapter.EntityType;
            IEdmEntitySet sourceEntitySet  = OeEdmClrHelper.GetEntitySet(queryContext.EdmModel, queryContext.EntitySetAdapter.EntitySetName);
            Expression    source           = OeEnumerableStub.CreateEnumerableStubExpression(sourceEntityType, sourceEntitySet);

            source = expressionBuilder.ApplyNavigation(source, queryContext.ParseNavigationSegments);

            IEdmEntitySet targetEntitySet = OeOperationHelper.GetEntitySet(queryContext.ODataUri.Path);

            if (sourceEntitySet != targetEntitySet)
            {
                queryContext.ODataUri.Path = new ODataPath(new EntitySetSegment(targetEntitySet));
            }

            expressionBuilder = new OeExpressionBuilder(queryContext.JoinBuilder);
            Type       targetEntityType = queryContext.EdmModel.GetClrType(targetEntitySet.EntityType());
            Expression target           = OeEnumerableStub.CreateEnumerableStubExpression(targetEntityType, targetEntitySet);

            target = expressionBuilder.ApplySelect(target, queryContext);

            var sourceQueryExpression = new OeQueryExpression(queryContext.EdmModel, sourceEntitySet, source);
            var targetQueryExpression = new OeQueryExpression(queryContext.EdmModel, targetEntitySet, target)
            {
                EntryFactory = expressionBuilder.CreateEntryFactory(targetEntitySet)
            };

            Type            boundFunctionParameterType = typeof(Db.OeBoundFunctionParameter <,>).MakeGenericType(new[] { sourceEntityType, targetEntityType });
            ConstructorInfo ctor = boundFunctionParameterType.GetConstructor(new[] { typeof(OeQueryExpression), typeof(OeQueryExpression) });

            return((Db.OeBoundFunctionParameter)ctor.Invoke(new Object[] { sourceQueryExpression, targetQueryExpression }));
        }
Exemplo n.º 2
0
        public Expression CreateExpression(IQueryable query, OeConstantToVariableVisitor constantToVariableVisitor)
        {
            Expression expression;
            var        expressionBuilder = new OeExpressionBuilder(EdmModel, EntitySetAdapter.EntityType);

            expression = Expression.Constant(null, typeof(IEnumerable <>).MakeGenericType(EntitySetAdapter.EntityType));
            expression = expressionBuilder.ApplyNavigation(expression, ParseNavigationSegments);
            expression = expressionBuilder.ApplyFilter(expression, ODataUri.Filter);
            expression = expressionBuilder.ApplySkipToken(expression, SkipTokenParser, ODataUri.SkipToken);
            expression = expressionBuilder.ApplyAggregation(expression, ODataUri.Apply);
            expression = expressionBuilder.ApplySelect(expression, this);
            expression = expressionBuilder.ApplyOrderBy(expression, ODataUri.OrderBy);
            expression = expressionBuilder.ApplySkip(expression, ODataUri.Skip, ODataUri.Path);
            expression = expressionBuilder.ApplyTake(expression, ODataUri.Top, ODataUri.Path);
            expression = expressionBuilder.ApplyCount(expression, IsCountSegment);

            if (!IsCountSegment)
            {
                EntryFactory = CreateEntryFactory(expressionBuilder);
            }

            expression = constantToVariableVisitor.Translate(expression, expressionBuilder.Constants);
            if (ODataUri.QueryCount.GetValueOrDefault())
            {
                CountExpression = CreateCountExpression(query, expression);
            }

            return(SourceVisitor.Translate(query, expression));
        }
Exemplo n.º 3
0
        public Expression CreateExpression(OeConstantToVariableVisitor constantToVariableVisitor)
        {
            Expression expression;
            var        expressionBuilder = new OeExpressionBuilder(EdmModel, EntitySetAdapter.EntityType);

            expression = Expression.Constant(null, typeof(IEnumerable <>).MakeGenericType(EntitySetAdapter.EntityType));
            expression = expressionBuilder.ApplyNavigation(expression, ParseNavigationSegments);
            expression = expressionBuilder.ApplyFilter(expression, ODataUri.Filter);
            expression = expressionBuilder.ApplySkipToken(expression, SkipTokenNameValues, ODataUri.OrderBy, IsDatabaseNullHighestValue);
            expression = expressionBuilder.ApplyAggregation(expression, ODataUri.Apply);
            expression = expressionBuilder.ApplySelect(expression, this);
            expression = expressionBuilder.ApplyOrderBy(expression, ODataUri.OrderBy);
            expression = expressionBuilder.ApplySkip(expression, ODataUri.Skip, ODataUri.Path);
            expression = expressionBuilder.ApplyTake(expression, ODataUri.Top, ODataUri.Path);
            expression = expressionBuilder.ApplyCount(expression, IsCountSegment);

            if (!IsCountSegment)
            {
                EntryFactory = CreateEntryFactory(expressionBuilder);
            }
            if (SkipTokenNameValues != null)
            {
                SkipTokenAccessors = OeSkipTokenParser.GetAccessors(expression, ODataUri.OrderBy);
            }

            return(constantToVariableVisitor.Translate(expression, expressionBuilder.Constants));
        }
Exemplo n.º 4
0
        public Expression CreateExpression(out IReadOnlyDictionary <ConstantExpression, ConstantNode> constants)
        {
            Initialize();

            Expression expression;
            var        expressionBuilder = new OeExpressionBuilder(_joinBuilder);

            IEdmEntitySet entitySet = OeEdmClrHelper.GetEntitySet(EdmModel, EntitySetAdapter.EntitySetName);

            expression = OeEnumerableStub.CreateEnumerableStubExpression(EntitySetAdapter.EntityType, entitySet);
            expression = expressionBuilder.ApplyNavigation(expression, ParseNavigationSegments);
            if (ODataUri.Apply == null)
            {
                expression = expressionBuilder.ApplyFilter(expression, ODataUri.Filter);
                expression = expressionBuilder.ApplySelect(expression, this);
            }
            else
            {
                expression = expressionBuilder.ApplyAggregation(expression, ODataUri.Apply);
                expression = expressionBuilder.ApplyFilter(expression, ODataUri.Filter);
                expression = expressionBuilder.ApplySkipToken(expression, SkipTokenNameValues, ODataUri.OrderBy, IsDatabaseNullHighestValue); //order by aggregation
                expression = expressionBuilder.ApplyOrderBy(expression, ODataUri.OrderBy);
                expression = expressionBuilder.ApplySkip(expression, ODataUri.Skip, ODataUri.Path);
                expression = expressionBuilder.ApplyTake(expression, ODataUri.Top, ODataUri.Path);
            }

            if (ODataUri.Path.LastSegment is CountSegment)
            {
                expression = expressionBuilder.ApplyCount(expression, true);
            }
            else
            {
                OePropertyAccessor[] skipTokenAccessors = OeSkipTokenParser.GetAccessors(expression, ODataUri.OrderBy, _joinBuilder);
                EntryFactory = CreateEntryFactory(expressionBuilder, skipTokenAccessors);
            }

            constants = expressionBuilder.Constants;
            return(expression);
        }
Exemplo n.º 5
0
        public Expression CreateExpression(IQueryable query, OeConstantToVariableVisitor constantToVariableVisitor)
        {
            Expression expression;
            var        expressionBuilder = new OeExpressionBuilder(EdmModel, EntitySetAdapter.EntityType);

            expression = Expression.Constant(null, typeof(IEnumerable <>).MakeGenericType(EntitySetAdapter.EntityType));
            expression = expressionBuilder.ApplyNavigation(expression, ParseNavigationSegments);
            expression = expressionBuilder.ApplyFilter(expression, ODataUri.Filter);
            expression = expressionBuilder.ApplyAggregation(expression, ODataUri.Apply);
            expression = expressionBuilder.ApplySelect(expression, ODataUri.SelectAndExpand, ODataUri.Path, Headers.MetadataLevel);
            expression = expressionBuilder.ApplyOrderBy(expression, ODataUri.OrderBy);
            expression = expressionBuilder.ApplySkip(expression, ODataUri.Skip, ODataUri.Path);
            expression = expressionBuilder.ApplyTake(expression, ODataUri.Top, ODataUri.Path);
            expression = expressionBuilder.ApplyCount(expression, IsCountSegment);

            if (!IsCountSegment)
            {
                EntryFactory = CreateEntryFactory(expressionBuilder);
            }

            expression = constantToVariableVisitor.Translate(expression, expressionBuilder.Constants);
            return(SourceVisitor.Translate(query, expression));
        }
Exemplo n.º 6
0
        public Expression CreateExpression(OeConstantToVariableVisitor constantToVariableVisitor)
        {
            Expression expression;
            var        expressionBuilder = new OeExpressionBuilder(JoinBuilder);

            IEdmEntitySet entitySet = OeEdmClrHelper.GetEntitySet(EdmModel, EntitySetAdapter.EntitySetName);

            expression = OeEnumerableStub.CreateEnumerableStubExpression(EntitySetAdapter.EntityType, entitySet);
            expression = expressionBuilder.ApplyNavigation(expression, ParseNavigationSegments);
            expression = expressionBuilder.ApplyFilter(expression, ODataUri.Filter);
            if (ODataUri.Apply == null)
            {
                expression = expressionBuilder.ApplySelect(expression, this);
            }
            else
            {
                expression = expressionBuilder.ApplySkipToken(expression, SkipTokenNameValues, ODataUri.OrderBy, IsDatabaseNullHighestValue);
                expression = expressionBuilder.ApplyAggregation(expression, ODataUri.Apply);
                expression = expressionBuilder.ApplyOrderBy(expression, ODataUri.OrderBy);
                expression = expressionBuilder.ApplySkip(expression, ODataUri.Skip, ODataUri.Path);
                expression = expressionBuilder.ApplyTake(expression, ODataUri.Top, ODataUri.Path);
            }
            expression = expressionBuilder.ApplyCount(expression, IsCountSegment);

            if (!IsCountSegment)
            {
                EntryFactory = CreateEntryFactory(expressionBuilder);
            }

            if (SkipTokenNameValues != null)
            {
                SkipTokenAccessors = OeSkipTokenParser.GetAccessors(expression, ODataUri.OrderBy, JoinBuilder);
            }

            return(constantToVariableVisitor.Translate(expression, expressionBuilder.Constants));
        }