public UniqueTableIndex AddUniqueIndex(ITable table, Field[] fields)
{
var index = new UniqueTableIndex(table, TableIndex.GetColumnsFromFields(fields));
AddIndex(index);
return(index);
}
public UniqueTableIndex AddUniqueIndex(ITable table, IColumn[] columns)
{
var index = new UniqueTableIndex(table, columns);
AddIndex(index);
return(index);
}
public virtual UniqueTableIndex?GenerateUniqueIndex(ITable table, UniqueIndexAttribute?attribute)
{
if (attribute == null)
{
return(null);
}
var result = new UniqueTableIndex(table, TableIndex.GetColumnsFromFields(this))
{
AvoidAttachToUniqueIndexes = attribute.AvoidAttachToUniqueIndexes
};
if (attribute.AllowMultipleNulls)
{
result.Where = IndexWhereExpressionVisitor.IsNull(this, false);
}
return(result);
}