public void VisitInsertClause(InsertClause insertClause, QueryModel queryModel) { if (insertClause.WithSelector != null) { QueryText.Append(" insert "); GetAqlExpression(insertClause.WithSelector, queryModel); } else { QueryText.AppendFormat(" insert {0} ", LinqUtility.ResolvePropertyName(insertClause.ItemName)); } QueryText.AppendFormat(" in {0} ", LinqUtility.ResolveCollectionName(Db, insertClause.CollectionType)); }
public override void VisitMainFromClause(MainFromClause fromClause, QueryModel queryModel) { if (fromClause.FromExpression as SubQueryExpression != null) { throw new Exception("MainFromClause.FromExpression cant be SubQueryExpression because group by is handle in itself clause"); } string fromName = LinqUtility.ResolveCollectionName(this.Db, fromClause.ItemType); // .Select(g => g.Select(gList => gList.Age)) subquery select, changes the fromName to group name (C1 for example) if (fromClause.FromExpression.Type.Name == "IGrouping`2") { var groupByClause = LinqUtility.PriorGroupBy(ParnetModelVisitor); var parentMVisitor = LinqUtility.FindParentModelVisitor(this); //parentMVisitor.GroupByNameCounter++; fromName = groupByClause[0].TranslateIntoName(); fromName = LinqUtility.ResolvePropertyName(fromName); } // == "IGrouping`2" => .Select(g => g.Select(gList => gList.Age)) subquery select if (fromClause.FromExpression.NodeType == ExpressionType.Constant || fromClause.FromExpression.Type.Name == "IGrouping`2") { if (fromClause.FromExpression.Type.Name == "ArangoQueryable`1" || fromClause.FromExpression.Type.Name == "IGrouping`2") { QueryText.AppendFormat(" for {0} in {1} ", LinqUtility.ResolvePropertyName(fromClause.ItemName), fromName); } else { QueryText.AppendFormat(" for {0} in ", LinqUtility.ResolvePropertyName(fromClause.ItemName)); GetAqlExpression(fromClause.FromExpression, queryModel); } } else { QueryText.AppendFormat(" for {0} in ", LinqUtility.ResolvePropertyName(fromClause.ItemName)); GetAqlExpression(fromClause.FromExpression, queryModel); } base.VisitMainFromClause(fromClause, queryModel); }
public override void VisitAdditionalFromClause(AdditionalFromClause fromClause, QueryModel queryModel, int index) { var subQuery = fromClause.FromExpression as SubQueryExpression; if (subQuery != null) { this.DontReturn = true; GetAqlExpression(subQuery, queryModel, handleJoin: true); } else if (fromClause.FromExpression.Type.Name == "ArangoQueryable`1") { string fromName = LinqUtility.ResolveCollectionName(this.Db, fromClause.ItemType); QueryText.AppendFormat(" for {0} in {1} ", LinqUtility.ResolvePropertyName(fromClause.ItemName), fromName); } else { QueryText.AppendFormat(" for {0} in ", LinqUtility.ResolvePropertyName(fromClause.ItemName)); GetAqlExpression(fromClause.FromExpression, queryModel); } }
protected override Expression VisitQuerySourceReference(QuerySourceReferenceExpression expression) { ModelVisitor.QueryText.AppendFormat(" {0}", LinqUtility.ResolvePropertyName(expression.ReferencedQuerySource.ItemName)); var mainFromClause = expression.ReferencedQuerySource as MainFromClause; // .Select(g => g.Select(gList => gList.Age)) subquery select, handle prior groupby source parameter names if (mainFromClause != null && mainFromClause.FromExpression.Type.Name == "IGrouping`2") { var groupByClauses = LinqUtility.PriorGroupBy(ModelVisitor); for (int i = 0; i < groupByClauses.Count; i++) { ModelVisitor.QueryText.AppendFormat("{0}{1}{2}" , i == 0 ? "." : "" , LinqUtility.ResolvePropertyName(groupByClauses[i].FromParameterName) , i != groupByClauses.Count - 1 ? "." : ""); } } return(expression); }
public void VisitGroupByClause(GroupByClause groupByClause, QueryModel queryModel, int index) { var parentMVisitor = LinqUtility.FindParentModelVisitor(this); parentMVisitor.GroupByNameCounter++; groupByClause.IntoName = "C" + parentMVisitor.GroupByNameCounter; groupByClause.FuncIntoName = Db.Setting.Linq.TranslateGroupByIntoName; groupByClause.FromParameterName = queryModel.MainFromClause.ItemName; QueryText.Append(" collect "); if (groupByClause.Selector.NodeType != ExpressionType.New) { groupByClause.CollectVariableName = "CV" + parentMVisitor.GroupByNameCounter; QueryText.AppendFormat(" {0} = ", LinqUtility.ResolvePropertyName(groupByClause.CollectVariableName)); } GetAqlExpression(groupByClause.Selector, queryModel, true); QueryText.AppendFormat(" into {0} ", LinqUtility.ResolvePropertyName(groupByClause.TranslateIntoName())); groupByClause.Visited = true; }
protected override Expression VisitParameter(ParameterExpression expression) { string name = expression.Name; if (expression.Type.Name == "TraversalData`2") { string prefix = LinqUtility.MemberNameFromMap(name, "graph", ModelVisitor); ModelVisitor.QueryText.AppendFormat(" {{ {0} : {1}, {2} : {3}, {4} : {5} }} ", LinqUtility.ResolvePropertyName($"vertex"), LinqUtility.ResolvePropertyName($"{prefix}_Vertex"), LinqUtility.ResolvePropertyName($"edge"), LinqUtility.ResolvePropertyName($"{prefix}_Edge"), LinqUtility.ResolvePropertyName($"path"), LinqUtility.ResolvePropertyName($"{prefix}_Path")); return(expression); } if (expression.Type.Name == "ShortestPathData`2") { string prefix = LinqUtility.MemberNameFromMap(name, "graph", ModelVisitor); ModelVisitor.QueryText.AppendFormat(" {{ {0} : {1}, {2} : {3} }} ", LinqUtility.ResolvePropertyName($"vertex"), LinqUtility.ResolvePropertyName($"{prefix}_Vertex"), LinqUtility.ResolvePropertyName($"edge"), LinqUtility.ResolvePropertyName($"{prefix}_Edge")); return(expression); } ModelVisitor.QueryText.AppendFormat(" {0} ", LinqUtility.ResolvePropertyName(name)); return(expression); }
public void VisitTraversalClause(ITraversalClause traversalClause, QueryModel queryModel, int index) { string prefix = LinqUtility.MemberNameFromMap(traversalClause.Identifier, "graph", this); if (traversalClause.TargetVertex != null) { QueryText.AppendFormat(" for {0}, {1} in ", LinqUtility.ResolvePropertyName($"{prefix}_Vertex"), LinqUtility.ResolvePropertyName($"{prefix}_Edge")); } else { QueryText.AppendFormat(" for {0}, {1}, {2} in ", LinqUtility.ResolvePropertyName($"{prefix}_Vertex"), LinqUtility.ResolvePropertyName($"{prefix}_Edge"), LinqUtility.ResolvePropertyName($"{prefix}_Path")); } if (traversalClause.Min != null && traversalClause.Max != null) { QueryText.AppendFormat(" {0}..{1} ", traversalClause.Min.Value, traversalClause.Max); } QueryText.AppendFormat(" {0} ", traversalClause.Direction != null ? traversalClause.Direction.Value : Utils.EdgeDirectionToString(EdgeDirection.Any)); if (traversalClause.TargetVertex != null) { QueryText.Append(" shortest_path "); GetAqlExpression(traversalClause.StartVertex, queryModel); QueryText.Append(" to "); GetAqlExpression(traversalClause.TargetVertex, queryModel); } else { GetAqlExpression(traversalClause.StartVertex, queryModel); } if (string.IsNullOrEmpty(traversalClause.GraphName) == false) { QueryText.AppendFormat(" graph \"{0}\" ", traversalClause.GraphName); } else { StringBuilder edges = new StringBuilder(); for (int i = 0; i < traversalClause.EdgeCollections.Count; i++) { var e = traversalClause.EdgeCollections[i]; if (i != 0) { edges.Append(", "); } if (e.Direction.HasValue) { edges.AppendFormat("{0} ", Utils.EdgeDirectionToString(e.Direction.Value)); } edges.Append(LinqUtility.ResolvePropertyName(e.CollectionName)); } QueryText.Append(edges); } if (traversalClause.Options != null) { QueryText.AppendFormat(" options {0} ", new DocumentSerializer(Db).SerializeWithoutReader(traversalClause.Options.Value)); } }
public void VisitUpdateReplaceClause(UpdateReplaceClause updateReplaceClause, QueryModel queryModel) { if (updateReplaceClause.KeySelector != null) { QueryText.AppendFormat(" {0} ", updateReplaceClause.Command); GetAqlExpression(updateReplaceClause.KeySelector, queryModel); QueryText.AppendFormat(" with "); } else { QueryText.AppendFormat(" {0} {1} with ", updateReplaceClause.Command, LinqUtility.ResolvePropertyName(updateReplaceClause.ItemName)); } GetAqlExpression(updateReplaceClause.WithSelector, queryModel); QueryText.AppendFormat(" in {0} ", LinqUtility.ResolveCollectionName(Db, updateReplaceClause.CollectionType)); }