Re: [rules-users] (no subject)

im getting the following error on doing that Exception in thread "pool-2-thread-1" Exception executing consequence for rule "size" in com.net: java.lang.NullPointerException what might be the problem? On Mon, Mar 10, 2014 at 4:16 PM, Wolfgang Laun <wolfgang.laun(a)gmail.com&gt;wrote: > Seeing that the list is static you can use the usual way for accessing > a static class member: > > Event.listOfEvent.add( ... ); > > @Mauricio: It's not unusual to maintain a static collection (even > though there may be better ways, esp. with Drools). > > > > On 10/03/2014, Mauricio Salatino <salaboy(a)gmail.com&gt; wrote: > > Can you please elaborate about why do you want to do that? what's the > point > > of having a list inside of the Event class that will contain the same > > event? > > > > The "Then" side of the rule is pure java.. so you just do > > event.getEvents().add(event); > > > > but I don't see the point of doing that. > > > > Regards > > > > > > On Mon, Mar 10, 2014 at 10:31 AM, Sandhya Sree > > <sandhyachinnaraj(a)gmail.com&gt;wrote: > > > >> hi , > >> > >> i have a class called Event which is as follows: > >> > >> public class Event { > >> private String name; > >> private File source; > >> private Date timeStamp; > >> public static List<Event> listOfEvents; > >> > >> public Event(String name, File source, Date timeStamp) { > >> this.name = name; > >> this.source = source; > >> this.timeStamp = timeStamp; > >> } > >> public String getName() { > >> return name; > >> } > >> public void setName(String name) { > >> this.name = name; > >> } > >> public File getSource() { > >> return source; > >> } > >> public void setSource(File source) { > >> this.source = source; > >> } > >> public Date getTimeStamp() { > >> return timeStamp; > >> } > >> public void setTimeStamp(Date timeStamp) { > >> this.timeStamp = timeStamp; > >> } > >> > >> > >> public void display() > >> { > >> System.out.println(name +" " + "in folder: " + source + " on " + > >> timeStamp ); > >> } > >> > >> > >> > >> there are also some other classes associated with my project.. i have > >> a > >> rules file which computes the size of a folder and creates an object > >> of > >> Event class. every time this object of Event class is created i wwant > >> to > >> put it in a List<Event>.. how can i do this.. > >> > >> my rules is as follows: > >> > >> rule "size" > >> when > >> $p: RuleContext($size: getOldContext().getParent().getUsableSpace() > >> > > >> (30*1024*1024)) > >> > >> then > >> Event event = new Event("folder almost full", > >> $p.getOldContext().getParent(), new Date()); > >> event.display(); > >> ......here i want to put this event into the List<Event> declared > >> in > >> Event Class..... > >> > >> end > >> > >> > >> > >> thanks, > >> Sandhya > >> > >> _______________________________________________ > >> rules-users mailing list > >> rules-users(a)lists.jboss.org > >> https://lists.jboss.org/mailman/listinfo/rules-users > >> > > > > > > > > -- > > - MyJourney @ http://salaboy.com <http://salaboy.wordpress.com> > > - Co-Founder @ http://www.jugargentina.org > > - Co-Founder @ http://www.jbug.com.ar > > > > - Salatino "Salaboy" Mauricio - > > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users >