Executing Drivers conditionally
org.lcsim allows you to add (Sub-)Drivers to your (Parent-)Driver.
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add(new SubDriverClass());
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You can put this anywhere in your code!
The Event loop process needs to be told to execute the child Drivers specifically. This is done with
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super.process() |
Again, this statement can appear anywhere in your code, even in conditional statements.
You can combie these statements to specifically run your Drivers only on certain events. Like so:
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import java.util.List;
import org.lcsim.event.EventHeader;
import org.lcsim.event.MCParticle;
import org.lcsim.util.Driver;
class PrintDriver1 extends Driver {
public void process(EventHeader e) {
System.out.println("PrintDriver1 has been called");
}
}
class PrintDriver2 extends Driver {
public void process(EventHeader e) {
System.out.println("PrintDriver2 has been called");
}
}
public class FilterExample extends Driver {
// Permanently add a Sub-Driver to this one
public FilterExample() {
add(new PrintDriver1());
}
public void process(EventHeader e) {
List<MCParticle> parts = e.getMCParticles();
System.out.println("Size: " + parts.size());
if (parts.size() < 100) {
// Execute all added Sub-Drivers
super.process(e);
} else if (parts.size() < 150) {
// Add a Driver just for now
PrintDriver2 p2 = new PrintDriver2();
add(p2);
// again, execute ALL Sub-Drivers
super.process(e);
// you can even remove a Driver.
remove(p2);
} else {
System.out.println("None is called");
}
}
}
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