Like all OsidLists, PoolConstrainerList provides a means for accessing PoolConstrainer elements sequentially either one at a time or many at a time. Examples:

while (pcl.hasNext()) {
     PoolConstrainer constrainer = pcl.getNextPoolConstrainer();
}

or

while (pcl.hasNext()) {
     PoolConstrainer[] constrainers = pcl.getNextPoolConstrainers(pcl.available());
}