Design patterns Adapter Adapter Pattern (PHP)
Example
A real world example using a scientific experiment where certain routines are performed on different types of tissue. The class contains two functions by default to get the tissue or routine separately. In a later version we have then adapted it using a new class to add a function that gets both. This means we have not edited the original code and therefore do not run any risk of breaking our existing class (and no retesting).
class Experiment {
private $routine;
private $tissue;
function __construct($routine_in, $tissue_in) {
$this->routine = $routine_in;
$this->tissue = $tissue_in;
}
function getRoutine() {
return $this->routine;
}
function getTissue() {
return $this->tissue;
}
}
class ExperimentAdapter {
private $experiment;
function __construct(Experiment $experiment_in) {
$this->experiment = $experiment_in;
}
function getRoutineAndTissue() {
return $this->experiment->getTissue().' ('. $this->experiment->getRoutine().')';
}
}
