Extending a data entity with Chain of Command is the same as extending a table.
Create an extension class, use “ExtensionOf” attribute, call method and use Chain of command.
[ExtensionOf(tableStr(PurchPurchaseOrderHeaderV2Entity))]
final class Al0PurchPurchaseOrderHeaderV2Entity_Extension
{
/// <summary>
/// Extension method
/// </summary>
/// <param name = "_entityCtx"></param>
/// <param name = "_dataSourceCtx"></param>
public void mapDataSourceToEntity(DataEntityRuntimeContext _entityCtx, DataEntityDataSourceRuntimeContext _dataSourceCtx)
{
//your code here....
next mapDataSourceToEntity(_entityCtx, _dataSourceCtx);
}
}