public TableRelation(TableSymbol parentTable, IReadOnlyCollection <ColumnSymbol> parentColumns, TableSymbol childTable, IReadOnlyCollection <ColumnSymbol> childColumns)
{
if (parentColumns == null)
{
throw new ArgumentNullException(nameof(parentColumns));
}
if (childColumns == null)
{
throw new ArgumentNullException(nameof(childColumns));
}
if (parentColumns.Count == 0)
{
throw new ArgumentException(Resources.ParentColumnsMustContainAtLeastOneColumn, nameof(parentColumns));
}
if (childColumns.Count != parentColumns.Count)
{
throw new ArgumentException(Resources.ChildColumnsMustHaveSameSizeAsParentColumns, nameof(childColumns));
}
if (parentColumns.Any(c => !parentTable.Columns.Contains(c)))
{
throw new ArgumentException(Resources.AllParentColumnsMustBelongToSameTable, nameof(parentColumns));
}
if (childColumns.Any(c => !childTable.Columns.Contains(c)))
{
throw new ArgumentException(Resources.AllChildColumnsMustBelongToSameTable, nameof(childColumns));
}
ParentTable = parentTable;
ParentColumns = parentColumns.ToImmutableArray();
ChildTable = childTable;
ChildColumns = childColumns.ToImmutableArray();
}
internal TableInstanceSymbol(string name, TableSymbol table, Func <TableInstanceSymbol, ColumnSymbol, ValueSlot> valueFactory)
: base(name)
{
Table = table;
ColumnInstances = table.Columns.Select(c => new TableColumnInstanceSymbol(this, c, valueFactory)).ToImmutableArray();
}
internal TableInstanceSymbol(string name, TableSymbol table, ValueSlotFactory valueFactory)
: this(name, table, (ti, c) => valueFactory.CreateNamed($"{ti.Name}.{c.Name}", c.Type))
{
}