/** True when all items are open */
boolean itemsOpen = true;
+
+ /** True when history collection will write data to disk */
+ boolean enabled = true;
+
+ /**
+ * Transient info only set in {@link #beginStep(NumberBinding, Object)} based on
+ * {@link #enabled}
+ */
+ private transient boolean stepEnabled = true;
public FlushPolicy flushPolicy = FlushPolicy.FlushOnEveryStep;
this.history = history;
this.state = (CollectorState) previousState.clone();
}
-
+
+ public void setEnabled(boolean enabled) {
+ this.enabled = enabled;
+ }
+
+ @Override
+ public boolean isEnabled() {
+ return enabled;
+ }
+
@Override
public synchronized void addItem(Bean item) throws HistoryException {
try {
@Override
public void beginStep(NumberBinding binding, Object time) throws HistoryException {
- openAllItems();
+ stepEnabled = enabled;
updateDt(binding, time);
state.time.setValue(binding, time);
+ if (enabled) {
+ openAllItems();
+ }
}
@Override
public void setValue(String id, Binding binding, Object value) throws HistoryException {
+ // Short-circuit calls when collection not enabled
+ if (!stepEnabled)
+ return;
+
VariableState vs = state.values.get( id );
if (vs == null) {
vs = new VariableState();
@Override
public void endStep() throws HistoryException {
+ if (!stepEnabled)
+ return;
// Write values to streams
for (ActiveStream i : items)
{
/// Extend existing band
// Extend endTime value
- if (!i.hasEndTime) {
- i.current.setTime( time.getBinding(), time.getValue() );
- } else {
- i.current.setEndTime( time.getBinding(), time.getValue() );
+
+ // This ensures that a value band's end time isn't the same
+ // as the next band's start time which makes it possible to
+ // know what are the timestamps between which the item value
+ // changed from a to b. This allows us to more correctly render
+ // steps and sloped lines accoring to the actual data.
+ if (!i.itemState.ooDeadband || isMinMaxFormat) {
+ if (!i.hasEndTime) {
+ i.current.setTime( time.getBinding(), time.getValue() );
+ } else {
+ i.current.setEndTime( time.getBinding(), time.getValue() );
+ }
}
+
if (i.itemState.ooDeadband || isMinMaxFormat) {
if (isValidValue) {
// Set last value