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package com.sun.ejb.containers;
import java.util.Date;
import java.util.Collection;
import java.util.Set;
import java.util.HashSet;
import java.util.Iterator;
import java.io.Serializable;
import javax.ejb.EJBLocalObject;
import javax.ejb.TimerService;
import javax.ejb.Timer;
import javax.ejb.EJBException;
import javax.ejb.FinderException;
import javax.ejb.CreateException;
import com.sun.enterprise.Switch;
/*
* EJBTimerServiceWrappers is the application-level representation
* of the EJB timer service.
*
* @author Kenneth Saks
*/
public class EJBTimerServiceWrapper implements TimerService {
private EJBTimerService timerService_;
private EJBContextImpl ejbContext_;
private long containerId_;
private boolean entity_;
// Only used for entity beans
private Object timedObjectPrimaryKey_;
public EJBTimerServiceWrapper(EJBTimerService timerService,
EJBContextImpl ejbContext)
{
timerService_ = timerService;
ejbContext_ = ejbContext;
BaseContainer container = (BaseContainer) ejbContext.getContainer();
containerId_ = container.getEjbDescriptor().getUniqueId();
entity_ = false;
timedObjectPrimaryKey_ = null;
}
public EJBTimerServiceWrapper(EJBTimerService timerService,
EntityContextImpl entityContext)
{
this(timerService, ((EJBContextImpl)entityContext));
entity_ = true;
// Delay access of primary key since this might have been called
// from ejbCreate
timedObjectPrimaryKey_ = null;
}
public Timer createTimer(long duration, Serializable info)
throws IllegalArgumentException, IllegalStateException, EJBException {
checkCreateTimerCallPermission();
if( duration < 0 ) {
throw new IllegalArgumentException("invalid duration=" + duration);
}
TimerPrimaryKey timerId = null;
try {
timerId = timerService_.createTimer
(containerId_, getTimedObjectPrimaryKey(), duration, 0, info);
} catch(CreateException ce) {
EJBException ejbEx = new EJBException();
ejbEx.initCause(ce);
throw ejbEx;
}
return new TimerWrapper(timerId, timerService_);
}
public Timer createTimer(long initialDuration, long intervalDuration,
Serializable info)
throws IllegalArgumentException, IllegalStateException, EJBException {
checkCreateTimerCallPermission();
if( initialDuration < 0 ) {
throw new IllegalArgumentException("invalid initial duration = " +
initialDuration);
} else if( intervalDuration < 0 ) {
throw new IllegalArgumentException("invalid interval duration = " +
intervalDuration);
}
TimerPrimaryKey timerId = null;
try {
timerId = timerService_.createTimer
(containerId_, getTimedObjectPrimaryKey(), initialDuration,
intervalDuration, info);
} catch(CreateException ce) {
EJBException ejbEx = new EJBException();
ejbEx.initCause(ce);
throw ejbEx;
}
return new TimerWrapper(timerId, timerService_);
}
public Timer createTimer(Date expiration, Serializable info)
throws IllegalArgumentException, IllegalStateException, EJBException {
checkCreateTimerCallPermission();
if( expiration == null ) {
throw new IllegalArgumentException("null expiration");
}
TimerPrimaryKey timerId = null;
try {
timerId = timerService_.createTimer(containerId_,
getTimedObjectPrimaryKey(),
expiration, 0, info);
} catch(CreateException ce) {
EJBException ejbEx = new EJBException();
ejbEx.initCause(ce);
throw ejbEx;
}
return new TimerWrapper(timerId, timerService_);
}
public Timer createTimer(Date initialExpiration, long intervalDuration,
Serializable info)
throws IllegalArgumentException, IllegalStateException, EJBException {
checkCreateTimerCallPermission();
if( initialExpiration == null ) {
throw new IllegalArgumentException("null expiration");
} else if ( intervalDuration < 0 ) {
throw new IllegalArgumentException("invalid interval duration = " +
intervalDuration);
}
TimerPrimaryKey timerId = null;
try {
timerId = timerService_.createTimer(containerId_,
getTimedObjectPrimaryKey(), initialExpiration,
intervalDuration, info);
} catch(CreateException e) {
EJBException ejbEx = new EJBException();
ejbEx.initCause(e);
throw ejbEx;
}
return new TimerWrapper(timerId, timerService_);
}
public Collection getTimers() throws IllegalStateException, EJBException {
checkCallPermission();
Collection timerIds = new HashSet();
if( ejbContext_.isTimedObject() ) {
try {
timerIds = timerService_.getTimerIds
(containerId_, getTimedObjectPrimaryKey());
} catch(FinderException fe) {
EJBException ejbEx = new EJBException();
ejbEx.initCause(fe);
throw ejbEx;
}
}
Collection timerWrappers = new HashSet();
for(Iterator iter = timerIds.iterator(); iter.hasNext();) {
TimerPrimaryKey next = (TimerPrimaryKey) iter.next();
timerWrappers.add( new TimerWrapper(next, timerService_) );
}
return timerWrappers;
}
private Object getTimedObjectPrimaryKey() {
if( !entity_ ) {
return null;
} else {
synchronized(this) {
if( timedObjectPrimaryKey_ == null ) {
timedObjectPrimaryKey_ =
((EntityContextImpl) ejbContext_).getPrimaryKey();
}
}
}
return timedObjectPrimaryKey_;
}
private void checkCreateTimerCallPermission()
throws IllegalStateException {
if( ejbContext_.isTimedObject() ) {
checkCallPermission();
} else {
throw new IllegalStateException("EJBTimerService.createTimer can "
+ "only be called from a timed object. This EJB does not "
+ "implement javax.ejb.TimedObject");
}
}
private void checkCallPermission()
throws IllegalStateException {
ejbContext_.checkTimerServiceMethodAccess();
}
}