Java Code Examples for net.fortuna.ical4j.model.Component#getProperty()

/**
 * <p>
 * Imports a calendar object containing a VAVAILABILITY. 
 * @param cal The calendar imported.
 * @throws CosmoDavException - if something is wrong this exception is thrown.
 * </p>
 */
public void setCalendar(Calendar cal) throws CosmoDavException {
    AvailabilityItem availability = (AvailabilityItem) getItem();
    
    availability.setAvailabilityCalendar(cal);
    
    Component comp = cal.getComponent(ICalendarConstants.COMPONENT_VAVAILABLITY);
    if (comp==null) {
        throw new UnprocessableEntityException("VCALENDAR does not contain a VAVAILABILITY");
    }

    String val = null;
    Property prop = comp.getProperty(Property.UID);
    if (prop != null) {
        val = prop.getValue();
    }
    if (StringUtils.isBlank(val)) {
        throw new UnprocessableEntityException("VAVAILABILITY does not contain a UID");
    }
    availability.setIcalUid(val);
}
 

/**
 * Parses the VTimezone Component of the given Calendar. If no, VTimezone component is found the
 * User Timezone is used
 *
 * @param calendar Calendar to parse
 * @param owner    Owner of the Calendar
 * @return Parsed TimeZone
 */
public TimeZone parseTimeZone(Calendar calendar, User owner) {
	if (calendar != null) {
		Component timezone = calendar.getComponent(Component.VTIMEZONE);
		if (timezone != null) {
			Property tzid = timezone.getProperty(Property.TZID);
			if (tzid != null) {
				return getTimeZone(tzid.getValue());
			}
		}
	}
	return getTimeZone(owner);
}
 

/**
 * Evaluates VEvent time range.
 * @param comps The component list.
 * @param filter The time range filter.
 * @return The result.
 */
private boolean evaluateVEventTimeRange(ComponentList<? extends Component> comps, TimeRangeFilter filter) {
    
    InstanceList instances = new InstanceList();
    if(filter.getTimezone()!=null) {
        instances.setTimezone(new TimeZone(filter.getTimezone()));
    }
    ArrayList<Component> mods = new ArrayList<Component>();
    
    for(Component comp : comps) {
        // Add master first
        if(comp.getProperty(Property.RECURRENCE_ID)==null) {
            instances.addComponent(comp, filter.getPeriod().getStart(), filter.getPeriod().getEnd());
        }
    }
    
    // Add overides after master has been added
    for(Component mod : mods) {
        instances.addOverride(mod, filter.getPeriod().getStart(), filter.getPeriod().getEnd());
    }
    
    if(instances.size()>0) {
        return true;
    }
    
    return false;
}
 

/**
 * gets master component.
 * @param components The component list.
 * @return The component.
 */
private Component getMasterComponent(ComponentList<? extends Component> components) {
    Iterator<? extends Component> it = components.iterator();
    while(it.hasNext()) {
        Component c = it.next();
        if(c.getProperty(Property.RECURRENCE_ID)==null) {
            return c;
        }
    }
    
    throw new IllegalArgumentException("no master found");
}
 

private void checkDatesForComponent(Component component){
    if(component == null){
        return;
    }
    
    Property dtStart = component.getProperty(Property.DTSTART);
    Property dtEnd = component.getProperty(Property.DTEND);
    
    if( dtStart instanceof DtStart && dtStart.getValue()!= null 
        && dtEnd instanceof DtEnd && dtEnd.getValue() != null 
       && ((DtStart)dtStart).getDate().compareTo(((DtEnd)dtEnd).getDate()) > 0 ){
        throw new IllegalArgumentException("End date [" + dtEnd + " is lower than start date [" + dtStart + "]");
    }
    
}
 

/**
 * Return the date that a trigger refers to, which can be an absolute
 * date or a date relative to the start or end time of a parent 
 * component (VEVENT/VTODO).
 * @param trigger The trigger.
 * @param parent The component.
 * @return date of trigger.
 */
public static Date getTriggerDate(Trigger trigger, Component parent) {
    
    if(trigger==null) {
        return null;
    }
    
    // if its absolute then we are done
    if(trigger.getDateTime()!=null) {
        return trigger.getDateTime();
    }
    
    // otherwise we need a start date if VEVENT
    DtStart start = (DtStart) parent.getProperty(Property.DTSTART);
    if(start==null && parent instanceof VEvent) {
        return null;
    }
    
    // is trigger relative to start or end
    Related related = (Related) trigger.getParameter(Parameter.RELATED);
    if(related==null || related.equals(Related.START)) {    
        // must have start date
        if(start==null) {
            return null;
        }
        
        // relative to start
        return Dates.getInstance(trigger.getDuration().getTime(start.getDate()), start.getDate());
    } else {
        // relative to end
        Date endDate = null;
        
        // need an end date or duration or due 
        DtEnd end = (DtEnd) parent.getProperty(Property.DTEND);
        if(end!=null) {
            endDate = end.getDate();
        }
       
        if(endDate==null) {
            Duration dur = (Duration) parent.getProperty(Property.DURATION);
            if(dur!=null && start!=null) {
                endDate= Dates.getInstance(dur.getDuration().getTime(start.getDate()), start.getDate());
            }
        }
        
        if(endDate==null) {
            Due due = (Due) parent.getProperty(Property.DUE);
            if(due!=null) {
                endDate = due.getDate();
            }
        }
        
        // require end date
        if(endDate==null) {
            return null;
        }
        
        return Dates.getInstance(trigger.getDuration().getTime(endDate), endDate);
    }
}
 

/**
 * Evaluates VToDo Time Range.
 * @param comps The component list.
 * @param filter The time range filter.
 * @return The boolean.
 * 
 */
private boolean evaulateVToDoTimeRange(ComponentList<? extends Component> comps, TimeRangeFilter filter) {
    ArrayList<Component> mods = new ArrayList<Component>();
    VToDo master = null;
    
    for(Component comp : comps) {
        // Add master first
        if(comp.getProperty(Property.RECURRENCE_ID)==null) {
            master = (VToDo) comp;
        }
    }
    
    // If there is no DTSTART, evaluate using special rules as
    // listed in the nice state table above
    if(mods.size()==0 && master.getStartDate()==null) {        
        return isVToDoInRange(master, filter.getPeriod());
    }
    
    // Otherwise use standard InstantList, which relies on
    // DTSTART,DURATION. 
    // TODO: Handle case of no DURATION and instead DUE
    // DUE is kind of like DTEND
    InstanceList instances = new InstanceList();
    if(filter.getTimezone()!=null) {
        instances.setTimezone(new TimeZone(filter.getTimezone()));
    }
    
    instances.addComponent(master, filter.getPeriod().getStart(), filter
            .getPeriod().getEnd());
    
    // Add overides after master has been added
    for(Component mod : mods) {
        instances.addOverride(mod, filter.getPeriod().getStart(), filter.getPeriod().getEnd());
    }
    
    if(instances.size()>0) {
        return true;
    }
    
    return false;
}
 

protected String getValue(Component component, String name) {
  if (component.getProperty(name) != null) {
    return component.getProperty(name).getValue();
  }
  return null;
}