/// <summary>
/// Extract PrimaryKey Definition from context
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
public static MySqlKeyDefinition ExtractPrimaryKey(PrimaryKeyTableConstraintContext context)
{
if (context == null)
{
throw new ArgumentOutOfRangeException($"{nameof(context)} is null");
}
var keys = context.GetIndexNames();
var pkName = context.GetChildlen <IndexColumnNamesContext>()
.Single()
.GetText().RemoveBackQuote().RemoveParenthesis();
var pkIndexes = keys.Select(x => x.RemoveBackQuote().RemoveParenthesis()).ToArray();
var definition = new MySqlKeyDefinition
{
KeyName = pkName,
Indexes = pkIndexes.Select((x, i) => new MySqlKeyDetailDefinition
{
Order = i,
IndexKey = x,
})
.ToArray(),
};
return(definition);
}
/// <summary>
/// Listener for Primary Key detection
/// </summary>
/// <param name="context"></param>
public override void EnterPrimaryKeyTableConstraint([NotNull] PrimaryKeyTableConstraintContext context)
{
base.EnterPrimaryKeyTableConstraint(context);
// primary key (pk)
var definition = MySqlKeyDefinition.ExtractPrimaryKey(context);
TableDefinition.PrimaryKey = definition;
// map PrimaryKey and existing Column reference
definition.AddPrimaryKeyReferenceOnColumn(TableDefinition.Columns);
}
/// <summary>
/// Get PrimaryKey names from context.
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
public static string[] GetIndexNames(this PrimaryKeyTableConstraintContext context)
{
if (context == null)
{
throw new ArgumentOutOfRangeException($"{nameof(context)} is null");
}
var result = context.GetChildlen <IndexColumnNamesContext>()
.SelectMany(x => x.GetChildlen <IndexColumnNameContext>())
.Select(x => x.GetText())
.ToArray();
return(result);
}
