/// <summary>
/// Fetches the Column Definition for the specified columnid.
/// </summary>
/// <value>
/// The <see cref="ColumnDefinition"/> for the specifed column identifier
/// </value>
/// <param name="columnid">The columnid.</param>
/// <returns>The <see cref="ColumnDefinition"/> for the specified column identifier.</returns>
public ColumnDefinition this[Columnid columnid]
{
get
{
if (this.database != null)
{
lock (this.database.IsamSession)
{
if (this.cachedColumnDefinition != columnid.Name.ToLower(CultureInfo.InvariantCulture) ||
this.columnUpdateID != DatabaseCommon.SchemaUpdateID)
{
JET_COLUMNBASE columnBase;
Api.JetGetColumnInfo(
this.database.IsamSession.Sesid,
this.database.Dbid,
this.tableName,
columnid.Name,
out columnBase);
this.columnDefinition = ColumnDefinition.Load(this.database, this.tableName, columnBase);
this.cachedColumnDefinition = columnid.Name.ToLower(CultureInfo.InvariantCulture);
this.columnUpdateID = DatabaseCommon.SchemaUpdateID;
}
return(this.columnDefinition);
}
}
else
{
return((ColumnDefinition)this.Dictionary[columnid.Name.ToLower(CultureInfo.InvariantCulture)]);
}
}
}
