public static GXDeleteArgs Delete <T>(T item)
{
if (item == null)
{
throw new ArgumentNullException("Deleted item can't be null.");
}
if (item is GXTableBase tb)
{
tb.BeforeRemove();
}
GXDeleteArgs arg;
if (item is IEnumerable)
{
arg = Delete(GXInternal.GetPropertyType(typeof(T)));
foreach (var it in item as IEnumerable)
{
arg.Where.Or <T>(q => it);
}
return(arg);
}
GXSerializedItem si = GXSqlBuilder.FindUnique(typeof(T));
if (si == null)
{
throw new ArgumentException("Delete by ID failed. Target class must be derived from IUnique.");
}
string name = GXDbHelpers.GetColumnName(si.Target as PropertyInfo, '\0');
arg = DeleteAll <T>();
arg.Where.Or <IUnique <T> >(_ => name.Equals(item));
return(arg);
}
private static GXSelectArgs SelectByIdInternal <T, IDTYPE>(IDTYPE id, Expression <Func <T, object> > columns)
{
GXSelectArgs arg = GXSelectArgs.Select <T>(columns);
GXSerializedItem si = GXSqlBuilder.FindUnique(typeof(T));
if (si == null)
{
throw new ArgumentException("Select by ID failed. Target class must be derived from IUnique.");
}
string name = GXDbHelpers.GetColumnName(si.Target as PropertyInfo, '\0');
arg.Where.Or <IUnique <T> >(q => name.Equals(id));
return(arg);
}
public static GXDeleteArgs DeleteById <T>(object id)
{
if (id == null)
{
throw new ArgumentNullException("Invalid Id.");
}
GXDeleteArgs arg = DeleteAll <T>();
GXSerializedItem si = GXSqlBuilder.FindUnique(typeof(T));
if (si == null)
{
throw new Exception("DeleteById failed. Class is not derived from IUnique.");
}
string name = GXDbHelpers.GetColumnName(si.Target as PropertyInfo, '\0');
arg.Where.Or <IUnique <T> >(q => name.Equals(id));
return(arg);
}
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.");
}
}
}
}
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));
}
}
}