A mechanism is provided to exchange information comprised in objects between object-oriented and non-object-oriented environments. The mechanism converts an object or a collection of objects into key-value-pairs clearly assigned to its originate object and vice versa. The mechanism feeds the keys and the values of the clearly assigned key-value-pairs one-by-one into a data stream to be used to transport information comprised in the objects from an object-oriented to a non-object-oriented environment and vice versa. Each key and/or value is only fed one time into the data stream and is then replaced by a placeholder referring to the key and/or value already sent.