public void request(int i, int j) {
if (i < 0 || i > versions.length || j < 0 || j > versions[i].length) return;
if (versions[i][j] == 0) return;
synchronized (nodeSubList) {
for (OnDemandData onDemandData = (OnDemandData) nodeSubList.reverseGetFirst();
onDemandData != null;
onDemandData = (OnDemandData) nodeSubList.reverseGetNext())
if (onDemandData.dataType == i && onDemandData.id == j) return;
OnDemandData onDemandData_1 = new OnDemandData();
onDemandData_1.dataType = i;
onDemandData_1.id = j;
onDemandData_1.incomplete = true;
synchronized (aClass19_1370) {
aClass19_1370.insertHead(onDemandData_1);
}
nodeSubList.push(onDemandData_1);
}
}
