Resolved with findComponent and getRowData() :
public List<Trigger> getTriggerList() {
this.get();
return triggerList;
}
private void get() {
DataTable dataTable = (DataTable) FacesContext.getCurrentInstance()
.getViewRoot().findComponent("form:jobs");
JobDetail jb = (JobDetail) dataTable.getRowData();
this.triggerList = this.jobServiceImpl.getAllTriggers(scheduler,
jb.getKey());
}