Exemple #1
0
 /// <summary>
 /// Get as name.
 /// </summary>
 /// <param name="joinList"></param>
 /// <param name="type"></param>
 /// <returns></returns>
 /// <remarks>
 /// As name is used if:
 /// 1. Data from different classes is saved to same table.
 /// 2. Several classes are using same class.
 /// 3. User is defined it using Alias attribute.
 /// </remarks>
 internal static string GetAsName(List <GXJoin> joinList, Type type, bool selectUsingAs)
 {
     //Data from different classes is saved to same table.
     if (selectUsingAs || GXDbHelpers.IsSharedTable(type))
     {
         string name   = GXDbHelpers.OriginalTableName(type);
         int    cnt    = 0;
         GXJoin target = null;
         foreach (GXJoin it in joinList)
         {
             if (type == it.Table1Type)
             {
                 target = it;
             }
             else if (it.Alias2 == name || it.Table2 == name)
             {
                 ++cnt;
                 //If we have more than one class that are sharing same table.
                 if (cnt != 1)
                 {
                     break;
                 }
             }
         }
         if (cnt > 1)
         {
             name = GXDbHelpers.GetTableName(type, false, '\0', null, false);
             if (target != null)
             {
                 target.Alias2 = name;
             }
             return(name);
         }
         if (selectUsingAs)
         {
             return(name);
         }
     }
     if (GXDbHelpers.IsAliasName(type))
     {
         return(GXDbHelpers.OriginalTableName(type));
     }
     return(null);
 }
Exemple #2
0
        private void GetRelations(Type type, List <GXJoin> joinList, List <Type> tables,
                                  Dictionary <Type, List <string> > columns, bool getRelations)
        {
            if (!tables.Contains(type))
            {
                //TODO: lisää shared table attribute.
                bool ignorebaseType = false;
                foreach (var it in tables)
                {
                    if (GXDbHelpers.IsSharedTable(it) && type.IsAssignableFrom(it.BaseType))
                    {
                        ignorebaseType = true;
                        break;
                    }
                }
                if (ignorebaseType)
                {
                    return;
                }
                tables.Add(type);

                Type          tp;
                bool          added;
                List <string> excluded  = null;
                List <string> cols      = null;
                string        tableName = null;
                if (columns != null && columns.ContainsKey(type))
                {
                    cols = columns[type];
                    if (cols.Contains("*"))
                    {
                        cols = null;
                    }
                }
                Dictionary <string, GXSerializedItem> properties = GXSqlBuilder.GetProperties(type);
                foreach (var it in properties)
                {
                    if (cols != null && !cols.Contains(it.Key))
                    {
                        continue;
                    }
                    if (!IsExcluded(it.Key, excluded))
                    {
                        if (it.Value.Relation != null && getRelations)
                        {
                            GXJoin j = new GXJoin();
                            tp           = it.Value.Relation.PrimaryTable;
                            j.Table1Type = tp;
                            bool shared = GXDbHelpers.IsSharedTable(tp);
                            if (shared || GXDbHelpers.IsAliasName(tp))
                            {
                                j.Alias1 = GXDbHelpers.OriginalTableName(tp);
                            }
                            j.Table2Type = it.Value.Relation.ForeignTable;
                            j.UpdateTables(tp, it.Value.Relation.ForeignTable);
                            //If nullable.
                            Type tp2 = it.Value.Relation.ForeignId.Type;
                            j.AllowNull1 = !shared && tp2.IsGenericType && tp2.GetGenericTypeDefinition() == typeof(Nullable <>);
                            if (!j.AllowNull1)
                            {
                                tp2          = it.Value.Relation.PrimaryId.Type;
                                j.AllowNull2 = !GXDbHelpers.IsSharedTable(it.Value.Relation.ForeignTable) &&
                                               tp2.IsGenericType && tp2.GetGenericTypeDefinition() == typeof(Nullable <>);
                            }
                            if (GXDbHelpers.IsSharedTable(it.Value.Relation.ForeignTable) ||
                                GXDbHelpers.IsAliasName(it.Value.Relation.ForeignTable))
                            {
                                j.Alias2 = GXDbHelpers.OriginalTableName(it.Value.Relation.ForeignTable);
                            }
                            if (it.Value.Relation.RelationType == RelationType.OneToOne ||
                                it.Value.Relation.RelationType == RelationType.Relation)
                            {
                                j.Column2 = GXDbHelpers.GetColumnName(it.Value.Relation.PrimaryId.Relation.ForeignId.Target as PropertyInfo, Parent.Settings.ColumnQuotation);
                                j.Column1 = GXDbHelpers.GetColumnName(it.Value.Relation.PrimaryId.Target as PropertyInfo, Parent.Settings.ColumnQuotation);
                                if (tables.Contains(it.Value.Relation.ForeignTable))
                                {
                                    continue;
                                }
                                //If nullable.
                                tp2          = it.Value.Relation.PrimaryId.Relation.ForeignId.Type;
                                j.AllowNull1 = !shared && tp2.IsGenericType && tp2.GetGenericTypeDefinition() == typeof(Nullable <>);
                                if (!j.AllowNull1)
                                {
                                    tp2          = it.Value.Relation.PrimaryId.Relation.PrimaryId.Type;
                                    j.AllowNull2 = !GXDbHelpers.IsSharedTable(it.Value.Relation.ForeignTable) &&
                                                   tp2.IsGenericType && tp2.GetGenericTypeDefinition() == typeof(Nullable <>);
                                }
                            }
                            else if (it.Value.Relation.RelationType == RelationType.OneToMany)
                            {
                                j.Column1 = GXDbHelpers.GetColumnName(it.Value.Relation.PrimaryId.Relation.ForeignId.Target as PropertyInfo, Parent.Settings.ColumnQuotation);
                                j.Column2 = GXDbHelpers.GetColumnName(it.Value.Relation.PrimaryId.Target as PropertyInfo, Parent.Settings.ColumnQuotation);
                                //If nullable.
                                tp2          = it.Value.Relation.ForeignId.Type;
                                j.AllowNull1 = !shared && tp2.IsGenericType && tp2.GetGenericTypeDefinition() == typeof(Nullable <>);
                                if (!j.AllowNull1)
                                {
                                    tp2          = it.Value.Relation.PrimaryId.Type;
                                    j.AllowNull2 = !GXDbHelpers.IsSharedTable(it.Value.Relation.ForeignTable) &&
                                                   tp2.IsGenericType && tp2.GetGenericTypeDefinition() == typeof(Nullable <>);
                                }
                            }
                            else if (it.Value.Relation.RelationType == RelationType.ManyToMany)
                            {
                                j.Table2Type = it.Value.Relation.RelationMapTable.Relation.PrimaryTable;
                                j.UpdateTables(tp, it.Value.Relation.RelationMapTable.Relation.PrimaryTable);
                                j.Column2 = GXDbHelpers.GetColumnName(GXSqlBuilder.FindRelation(it.Value.Relation.RelationMapTable.Relation.PrimaryTable, tp).Target as PropertyInfo, Parent.Settings.ColumnQuotation);
                                j.Column1 = GXDbHelpers.GetColumnName(GXSqlBuilder.FindUnique(tp).Target as PropertyInfo, Parent.Settings.ColumnQuotation);
                                added     = false;
                                //Check that join is not added already.
                                string j1 = j.Table1;
                                string j2 = j.Table2;
                                foreach (var it4 in joinList)
                                {
                                    string t1 = it4.Table1;
                                    string t2 = it4.Table2;
                                    if ((j1 == t1 && j2 == t2) || (j2 == t1 && j1 == t2))
                                    {
                                        added = true;
                                        break;
                                    }
                                }
                                if (!added)
                                {
                                    joinList.Add(j);
                                    j = new GXJoin();
                                    Type tmp = it.Value.Type;
                                    j.AllowNull1 = !!GXDbHelpers.IsSharedTable(tmp) && tmp.IsGenericType && tmp.GetGenericTypeDefinition() == typeof(Nullable <>);
                                    j.UpdateTables(it.Value.Relation.RelationMapTable.Relation.PrimaryTable, it.Value.Relation.ForeignTable);
                                    j.Column1 = GXDbHelpers.GetColumnName(it.Value.Relation.RelationMapTable.Target as PropertyInfo, Parent.Settings.ColumnQuotation);
                                    j.Column2 = GXDbHelpers.GetColumnName(it.Value.Relation.ForeignId.Target as PropertyInfo, Parent.Settings.ColumnQuotation);
                                    joinList.Add(j);
                                    tables.Add(it.Value.Relation.RelationMapTable.Relation.PrimaryTable);
                                    if (cols != null)
                                    {
                                        tables.Add(it.Value.Relation.ForeignTable);
                                    }
                                }
                                j = null;
                            }
                            if (j != null)
                            {
                                //Check that join is not added already.
                                added = false;
                                string j1    = j.Table1;
                                string j2    = j.Table2;
                                int    index = -1;
                                foreach (var it4 in joinList)
                                {
                                    string t1 = it4.Table1;
                                    string t2 = it4.Table2;
                                    if ((j1 == t1 && j2 == t2) || (j2 == t1 && j1 == t2))
                                    {
                                        added = true;
                                        break;
                                    }
                                    if (j.Alias2 != null && it4.Alias2 == j.Alias2)
                                    {
                                        ++index;
                                    }
                                }
                                //If we have multiple referenced to same table.
                                if (index != -1)
                                {
                                    j.Index = index + 1;
                                }
                                if (!added)
                                {
                                    joinList.Add(j);
                                }
                            }
                            if (cols == null || cols.Contains(it.Key))
                            {
                                GetRelations(it.Value.Relation.ForeignTable, joinList, tables, columns, getRelations);
                            }
                        }
                    }
                    else
                    {
                        System.Diagnostics.Debug.WriteLine("Column " + tableName + "." + it.Key + " Skipped.");
                    }
                }
            }
        }
Exemple #3
0
        private void SelectToString(GXDBSettings settings, StringBuilder sb, bool distinct,
                                    Dictionary <Type, List <string> > columnList, List <GXJoin> joinList, UInt32 index, UInt32 count)
        {
            Dictionary <Type, string> asTable = new Dictionary <Type, string>();
            string name;

            foreach (var it in columnList)
            {
                name = GetAsName(joinList, it.Key, settings.SelectUsingAs);
                if (name != null)
                {
                    asTable.Add(it.Key, name);
                }
            }
            sb.Append("SELECT ");
            if (distinct)
            {
                sb.Append("DISTINCT ");
            }
            if (index != 0 || count != 0)
            {
                if (index != 0 && count == 0)
                {
                    throw new ArgumentOutOfRangeException("Count can't be zero if index is given.");
                }
                if (index != 0)
                {
                    if (settings.LimitType == LimitType.Top)
                    {
                        sb.Length = 0;
                        sb.Append("SELECT * FROM (SELECT TOP ");
                        sb.Append(count);
                        sb.Append(" GX.* FROM (");
                        sb.Append("SELECT ");
                        if (distinct)
                        {
                            sb.Append("DISTINCT ");
                        }
                        sb.Append("TOP ");
                        sb.Append(index + count);
                        sb.Append(" ");
                    }
                }
                else
                {
                    if (settings.LimitType == LimitType.Top)
                    {
                        sb.Append("TOP ");
                        sb.Append(count);
                        sb.Append(" ");
                    }
                }
            }
            string tableAs, table;
            bool   first = true;

            foreach (var it in columnList)
            {
                if (asTable.ContainsKey(it.Key))
                {
                    tableAs = asTable[it.Key];
                }
                else
                {
                    tableAs = null;
                }
                if (GXDbHelpers.IsSharedTable(it.Key) || GXDbHelpers.IsAliasName(it.Key))
                {
                    table = GXDbHelpers.AddQuotes(GXDbHelpers.OriginalTableName(it.Key), settings.TableQuotation);
                }
                else
                {
                    table = GXDbHelpers.GetTableName(it.Key, true, settings.TableQuotation, settings.TablePrefix);
                }
                foreach (var col in it.Value)
                {
                    name = null;
                    if (first)
                    {
                        first = false;
                    }
                    else
                    {
                        sb.Append(", ");
                    }
                    //Check is this method.
                    int pos = col.LastIndexOf('(');
                    //Table name is not added if only one table.
                    if (pos == -1 && joinList.Count != 0)
                    {
                        if (asTable.Count > 1 && tableAs != null)
                        {
                            sb.Append(tableAs);
                        }
                        else
                        {
                            sb.Append(table);
                        }
                        sb.Append(".");
                    }
                    if (pos == -1) //If table field.
                    {
                        if (col == "*")
                        {
                            sb.Append(col);
                        }
                        else
                        {
                            name = GXDbHelpers.AddQuotes(col, settings.ColumnQuotation);
                            sb.Append(name);
                        }
                        if (tableAs != null)
                        {
                            sb.Append(" AS ");
                            name = GXDbHelpers.AddQuotes(tableAs + "." + col, settings.ColumnQuotation);
                            sb.Append(name);
                        }
                        else if (settings.SelectUsingAs && index == 0)
                        {
                            sb.Append(" AS ");
                            name = GXDbHelpers.AddQuotes(tableAs + "." + col, settings.ColumnQuotation);
                            sb.Append(name);
                        }
                    }
                    else //If method like COUNT(*)
                    {
                        sb.Append(col);
                        if (settings.SelectUsingAs && index == 0)
                        {
                            sb.Append(" AS ");
                            name = GXDbHelpers.AddQuotes(tableAs + "." + col.Substring(0, pos), settings.ColumnQuotation);
                            sb.Append(name);
                        }
                    }
                    if (Maps.ContainsKey(col))
                    {
                        sb.Append(" AS ");
                        sb.Append(GXDbHelpers.AddQuotes(Maps[col], settings.ColumnQuotation));
                    }
                }
            }
            if (columnList.Count == 0)
            {
                sb.Append("*");
            }
            if (joinList.Count == 0)
            {
                sb.Append(" FROM ");
                first = true;
                foreach (var it in columnList)
                {
                    if (first)
                    {
                        first = false;
                    }
                    else
                    {
                        sb.Append(", ");
                    }
                    sb.Append(GXDbHelpers.GetTableName(it.Key, settings.UseQuotationWhereColumns, settings.TableQuotation, settings.TablePrefix));
                    if (asTable.ContainsKey(it.Key))
                    {
                        sb.Append(" ");
                        sb.Append(GXDbHelpers.AddQuotes(asTable[it.Key], settings.TableQuotation));
                    }
                }
            }
            else
            {
                //If we are adding relation to same table more than once.
                Dictionary <string, int> list = new Dictionary <string, int>();
                sb.Append(" FROM ");
                first = true;
                if (joinList.Count != 1)
                {
                    for (int pos = 0; pos < joinList.Count; ++pos)
                    {
                        sb.Append("(");
                    }
                }
                foreach (var it in joinList)
                {
                    if (first)
                    {
                        sb.Append(GXDbHelpers.AddQuotes(it.Table1, settings.TableQuotation));
                        if (asTable.ContainsKey(it.Table1Type))
                        {
                            sb.Append(" ");
                            sb.Append(GXDbHelpers.AddQuotes(asTable[it.Table1Type], settings.TableQuotation));
                        }
                        else
                        {
                            if (it.Alias1 != null)
                            {
                                sb.Append(" ");
                                sb.Append(it.Alias1);
                            }
                        }
                        first = false;
                    }

                    switch (it.Type)
                    {
                    case JoinType.Inner:
                        sb.Append(" INNER JOIN ");
                        break;

                    case JoinType.Left:
                        sb.Append(" LEFT OUTER JOIN ");
                        break;

                    case JoinType.Right:
                        sb.Append(" RIGHT OUTER JOIN ");
                        break;

                    default:
                        throw new ArgumentOutOfRangeException("Invalid join type.");
                    }
                    sb.Append(GXDbHelpers.AddQuotes(it.Table2, settings.TableQuotation));
                    //Add alias if used and it is not same as table name.
                    if (asTable.ContainsKey(it.Table2Type))
                    {
                        sb.Append(" ");
                        sb.Append(GXDbHelpers.AddQuotes(asTable[it.Table2Type], settings.TableQuotation));
                    }
                    sb.Append(" ON ");
                    if (asTable.ContainsKey(it.Table1Type))
                    {
                        sb.Append(" ");
                        sb.Append(GXDbHelpers.AddQuotes(asTable[it.Table1Type], settings.TableQuotation));
                    }
                    else
                    {
                        sb.Append(GXDbHelpers.AddQuotes(it.Table1, settings.TableQuotation));
                    }
                    sb.Append('.');
                    sb.Append(it.Column1);
                    sb.Append('=');
                    //Add alias if used.
                    if (asTable.ContainsKey(it.Table2Type))
                    {
                        //sb.Append(it.Table2);
                        sb.Append(GXDbHelpers.AddQuotes(asTable[it.Table2Type], settings.TableQuotation));
                    }
                    else
                    {
                        sb.Append(GXDbHelpers.AddQuotes(it.Table2, settings.TableQuotation));
                        if (it.Alias2 == null && it.Index != 0)
                        {
                            sb.Append(it.Index);
                        }
                    }
                    sb.Append('.');
                    sb.Append(it.Column2);
                    if (it.AllowNull1)
                    {
                        sb.Append(" OR ");
                        //Add alias if used.
                        if (asTable.ContainsKey(it.Table1Type))
                        {
                            sb.Append(GXDbHelpers.AddQuotes(asTable[it.Table1Type], settings.TableQuotation));
                        }
                        else
                        {
                            sb.Append(GXDbHelpers.AddQuotes(it.Table1, settings.TableQuotation));
                        }
                        sb.Append('.');
                        sb.Append(it.Column1);
                        sb.Append(" IS NULL");
                    }

                    if (it.AllowNull2)
                    {
                        sb.Append(" OR ");
                        //Add alias if used.
                        if (asTable.ContainsKey(it.Table2Type))
                        {
                            sb.Append(GXDbHelpers.AddQuotes(asTable[it.Table2Type], settings.TableQuotation));
                        }
                        else
                        {
                            sb.Append(GXDbHelpers.AddQuotes(it.Table2, settings.TableQuotation));
                        }
                        sb.Append('.');
                        sb.Append(it.Column2);
                        sb.Append(" IS NULL");
                    }

                    if (joinList.Count != 1)
                    {
                        sb.Append(")");
                    }
                }
            }
            if (index != 0)
            {
                if (settings.LimitType == LimitType.Top)
                {
                    List <Type> tables = new List <Type>();
                    foreach (var it in columnList)
                    {
                        if (!tables.Contains(it.Key))
                        {
                            tables.Add(it.Key);
                        }
                    }
                    GXSerializedItem si = null;
                    foreach (var it in tables)
                    {
                        if ((si = GXSqlBuilder.FindUnique(it)) != null)
                        {
                            break;
                        }
                    }
                    string id;
                    //Add alias if used.
                    if (asTable.ContainsKey((si.Target as PropertyInfo).ReflectedType))
                    {
                        id = GXDbHelpers.AddQuotes(asTable[(si.Target as PropertyInfo).ReflectedType] + "." + GXDbHelpers.GetColumnName(si.Target as PropertyInfo, '\0'), settings.TableQuotation);
                    }
                    else
                    {
                        id = GXDbHelpers.GetColumnName(si.Target as PropertyInfo, '\0');
                    }

                    sb.Append(string.Format(" ORDER BY {0}) AS GX ORDER BY GX.{0} DESC) AS GX2", id));
                }
            }
        }