/// <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);
}
internal static void UpdateJoins(GXDBSettings settings, GXJoinCollection list, List <GXJoin> joins)
{
char separtor = settings.ColumnQuotation;
bool allowNull;
MemberExpression me;
foreach (KeyValuePair <JoinType, BinaryExpression> it in list.List)
{
GXJoin join = new GXJoin();
join.Type = it.Key;
me = GetMemberExpression(it.Value.Left, out allowNull);
MemberInfo m = me.Member;
Expression e = me.Expression;
join.Column1 = GXDbHelpers.GetColumnName(m, separtor);
join.AllowNull1 = allowNull;
m = GetMemberExpression(it.Value.Right, out allowNull).Member;
join.Column2 = GXDbHelpers.GetColumnName(m, separtor);
join.AllowNull2 = allowNull;
join.UpdateTables(e.Type, m.DeclaringType);
joins.Add(join);
}
}
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.");
}
}
}
}
