Пример #1
0
        public void AddTable(DbTable t)
        {
            int ct = 0;

            foreach (DbTableConstraint constraint in t.references.Each())
            {
                if ((showExplicit.Checked && constraint.isForeignKey) || (showInferred.Checked && constraint.isSloppyForeignKey))
                {
                    ct++;
                }
            }

            foreach (DbTableConstraint constraint in t.constraints.Values)
            {
                if ((showExplicit.Checked && constraint.isForeignKey) || (showInferred.Checked && constraint.isSloppyForeignKey))
                {
                    ct++;
                }
            }

            if (ct == 0)
            {
                return;
            }

            string leftTable = T.AppendTo(t.name, t.GetAlias(true), " ");

            Microsoft.Msagl.Drawing.Shape shape = Microsoft.Msagl.Drawing.Shape.Box;
            Color       backColor   = Color.DarkKhaki;
            Color       borderColor = backColor;
            int         radius      = 20;
            DrawingNode node        = drawingGraph.AddNode(leftTable);

            node.Attr.FillColor   = node.Attr.FillColor = GraphColor(backColor);
            node.Attr.Color       = GraphColor(borderColor);
            node.Attr.LabelMargin = 10;
            node.Attr.Shape       = shape;
            node.Attr.XRadius     = radius;
            node.Attr.YRadius     = radius;
            node.LabelText        = leftTable;
            foreach (DbTableConstraint constraint in t.constraints.Values)
            {
                if ((showExplicit.Checked && constraint.isForeignKey) || (showInferred.Checked && constraint.isSloppyForeignKey))
                {
                    string rightTable = T.AppendTo(constraint.referencedTable.name, constraint.referencedTable.GetAlias(true), " ");
                    string edgeInfo   = constraint.RenderJoinCols(true);
                    Microsoft.Msagl.Drawing.Edge e = drawingGraph.AddEdge(leftTable, edgeInfo, rightTable);
                    e.Attr.Weight = 6;
                    paths.Add(t.name + "." + constraint.referencedTable.name);
                }
            }
        }
Пример #2
0
        public string AddTable(DbTable t, bool includeAlias)
        {
            string alias = "";

            if (includeAlias)
            {
                alias = t.GetAlias(true);
            }
            int insertPos = 0;

            if (query.from == null)
            {
                Keyword k = Keyword.CreateKeyword(0, "from");
                k.parentQuery = query;
                insertPos     = k.GetInsertOffset();
                inserts.Add(insertPos, ("from " + t.name + " " + alias).Trim());
            }
            else
            {
                if (query.from.tables.GetTableByName(t.name) == null)
                {
                    insertPos = query.from.rightExtent;
                    while (Char.IsWhiteSpace(Query.rootQuery.expression[insertPos - 1]))
                    {
                        insertPos--;
                    }
                    string bestJoin = null;
                    foreach (Table table in query.from.tables.tokens)
                    {
                        string join = table.dbTable.RenderJoin(t.name, includeAlias);
                        if (join != "" && (bestJoin == null || bestJoin.CountOccurrances('.') > join.CountOccurrances('.')))
                        {
                            bestJoin = join;
                        }
                    }
                    if (bestJoin != null)
                    {
                        inserts.Add(insertPos, bestJoin);
                    }
                }
            }

            return(alias);
        }