/// <summary>
/// Create a <see cref="ForeignKey"/> for the columns in the Table.
/// </summary>
/// <param name="keyName"></param>
/// <param name="keyColumns">An <see cref="IList"/> of <see cref="Column"/> objects.</param>
/// <param name="referencedEntityName"></param>
/// <param name="referencedColumns"></param>
/// <returns>
/// A <see cref="ForeignKey"/> for the columns in the Table.
/// </returns>
/// <remarks>
/// This does not necessarily create a <see cref="ForeignKey"/>, if
/// one already exists for the columns then it will return an
/// existing <see cref="ForeignKey"/>.
/// </remarks>
public virtual ForeignKey CreateForeignKey(string keyName, IEnumerable <Column> keyColumns, string referencedEntityName,
IEnumerable <Column> referencedColumns)
{
IEnumerable <Column> kCols = keyColumns;
IEnumerable <Column> refCols = referencedColumns;
var key = new ForeignKeyKey(kCols, referencedEntityName, refCols);
ForeignKey fk;
foreignKeys.TryGetValue(key, out fk);
if (fk == null)
{
fk = new ForeignKey();
// NOTE : if the name is null, we will generate an implicit name during second pass processing
// after we know the referenced table name (which might not be resolved yet).
fk.Name = keyName;
fk.Table = this;
foreignKeys.Add(key, fk);
fk.ReferencedEntityName = referencedEntityName;
fk.AddColumns(kCols);
if (referencedColumns != null)
{
fk.AddReferencedColumns(refCols);
}
}
if (!string.IsNullOrEmpty(keyName))
{
fk.Name = keyName;
}
return(fk);
}
/// <summary>
/// Create a <see cref="ForeignKey"/> for the columns in the Table.
/// </summary>
/// <param name="keyName"></param>
/// <param name="keyColumns">An <see cref="IList"/> of <see cref="Column"/> objects.</param>
/// <param name="referencedEntityName"></param>
/// <param name="referencedColumns"></param>
/// <returns>
/// A <see cref="ForeignKey"/> for the columns in the Table.
/// </returns>
/// <remarks>
/// This does not necessarily create a <see cref="ForeignKey"/>, if
/// one already exists for the columns then it will return an
/// existing <see cref="ForeignKey"/>.
/// </remarks>
public virtual ForeignKey CreateForeignKey(string keyName, IEnumerable <Column> keyColumns, string referencedEntityName,
IEnumerable <Column> referencedColumns)
{
IEnumerable <Column> kCols = keyColumns;
IEnumerable <Column> refCols = referencedColumns;
var key = new ForeignKeyKey(kCols, referencedEntityName, refCols);
ForeignKey fk;
foreignKeys.TryGetValue(key, out fk);
if (fk == null)
{
fk = new ForeignKey();
if (!string.IsNullOrEmpty(keyName))
{
fk.Name = keyName;
}
else
{
fk.Name = "FK" + UniqueColumnString(kCols, referencedEntityName);
//TODO: add referencedClass to disambiguate to FKs on the same columns, pointing to different tables
}
fk.Table = this;
foreignKeys.Add(key, fk);
fk.ReferencedEntityName = referencedEntityName;
fk.AddColumns(kCols);
if (referencedColumns != null)
{
fk.AddReferencedColumns(refCols);
}
}
if (!string.IsNullOrEmpty(keyName))
{
fk.Name = keyName;
}
return(fk);
}
