/// <summary>
/// Creates a ADD COLUMN from current schema.
/// This MAY change de [DefaultValue] when [NotNull] to Comply with Sqlite
/// </summary>
/// <returns></returns>
public string ExportAddColumnAsStatement()
{
if (string.IsNullOrEmpty(ColumnName))
{
throw new ArgumentNullException("ColumnName can not be null");
}
if (ColumnName.Any(c => char.IsWhiteSpace(c)))
{
throw new ArgumentNullException("ColumnName can not contain whitespaces");
}
if (ColumnName.Any(c => char.IsSymbol(c)))
{
throw new ArgumentNullException("ColumnName can not contain symbols");
}
StringBuilder sb = new StringBuilder();
sb.Append(" ADD COLUMN ");
sb.Append(ColumnName);
sb.Append(" ");
sb.Append(SqliteType.ToString());
sb.Append(" ");
if (IsAI)
{
sb.Append("AUTOINCREMENT ");
}
// Columns with PK cannot be added in Sqlite
// Columns with UNIQUE cannot be added in Sqlite
// Columns with [NOT NULL] MUST HAVE a [DEFAULT VALUE]
if (!AllowNulls)
{
sb.Append("NOT NULL ");
if (DefaultValue == null)
{
setReasonableDefault(this);
}
}
if (DefaultValue != null)
{
sb.Append($"DEFAULT '{DefaultValue}'");
}
return(sb.ToString());
}
/// <summary>
/// Creates a CREATE TABLE column statment from current schema
/// </summary>
public string ExportColumnDefinitionAsStatement()
{
if (string.IsNullOrEmpty(ColumnName))
{
throw new ArgumentNullException("ColumnName can not be null");
}
if (ColumnName.Any(c => char.IsWhiteSpace(c)))
{
throw new ArgumentNullException("ColumnName can not contain whitespaces");
}
if (ColumnName.Any(c => char.IsSymbol(c)))
{
throw new ArgumentNullException("ColumnName can not contain symbols");
}
StringBuilder sb = new StringBuilder();
sb.Append(ColumnName);
sb.Append(" ");
sb.Append(SqliteType.ToString());
sb.Append(" ");
if (IsPK)
{
sb.Append("PRIMARY KEY ");
}
if (IsAI)
{
sb.Append("AUTOINCREMENT ");
}
if (IsUnique)
{
sb.Append("UNIQUE ");
}
if (!AllowNulls)
{
sb.Append("NOT NULL ");
}
if (DefaultValue != null)
{
sb.Append($"DEFAULT '{DefaultValue}'");
}
return(sb.ToString());
}
