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package ak.hostadmiral.core.model;
import java.util.*;
import net.sf.hibernate.*;
import net.sf.hibernate.type.Type;
import ak.hostadmiral.util.CollectionUtils;
import ak.hostadmiral.util.HibernateUtil;
import ak.hostadmiral.util.ModelException;
import ak.hostadmiral.util.ModelSecurityException;
public class MailAliasManager
implements
UserBeforeDeleteListener,
UserDeletingListener,
InetDomainBeforeDeleteListener,
InetDomainDeletingListener
{
private static MailAliasManager mailAliasManager = null;
private static boolean registered = false;
public static MailAliasManager getInstance()
{
if(mailAliasManager == null)
mailAliasManager = new MailAliasManager();
return mailAliasManager;
}
protected static void register()
{
synchronized(MailAliasManager.class) {
if(registered) return;
registered = true;
try {
HibernateUtil.getConfiguration().addResource(
"ak/hostadmiral/core/model/MailAlias.hbm.xml");
}
catch(Exception ex) {
ex.printStackTrace();
throw new RuntimeException(ex.getMessage());
}
}
}
static {
register();
}
private Collection createdListeners = new ArrayList();
private Collection modifiedListeners = new ArrayList();
private Collection beforeDeleteListeners = new ArrayList();
private Collection deletingListeners = new ArrayList();
private Collection deletedListeners = new ArrayList();
private MailAliasManager()
{
UserManager.getInstance().addBeforeDeleteListener(this);
}
public MailAlias create(User editor)
throws ModelException
{
if(!allowedToCreate(editor)) throw new ModelSecurityException();
MailAlias alias = new MailAlias();
alias.setDestinations(new ArrayList());
return alias;
}
public boolean allowedToCreate(User editor)
throws ModelException
{
return MailAlias.allowedToCreate(this, editor);
}
public MailAlias get(User editor, Long id)
throws ModelException
{
MailAlias alias;
try {
alias = (MailAlias)HibernateUtil.currentSession().load(MailAlias.class, id);
}
catch(HibernateException ex)
{
throw new ModelException(ex);
}
if(!alias.viewableBy(editor))
throw new ModelSecurityException();
return alias;
}
public boolean addressExists(User editor, MailAlias alias, String address)
throws ModelException
{
if(alias.getDomain() == null)
throw new ModelException("Cannot check unique address for mail alias without domain");
try {
if(alias.getId() == null)
return ((Integer)HibernateUtil.currentSession().iterate(
"select count(*) from MailAlias where address = ? and domain = ?",
new Object[] { address, alias.getDomain() },
new Type[] { Hibernate.STRING, Hibernate.entity(InetDomain.class) } )
.next()).intValue() > 0;
else
return ((Integer)HibernateUtil.currentSession().iterate(
"select count(*) from MailAlias a where address = ? and domain = ? and a != ?",
new Object[] { address, alias.getDomain(), alias },
new Type[] { Hibernate.STRING, Hibernate.entity(InetDomain.class),
Hibernate.entity(MailAlias.class) } )
.next()).intValue() > 0;
}
catch(HibernateException ex)
{
throw new ModelException(ex);
}
}
protected MailAlias findForName(String name)
throws ModelException
{
try {
List list = HibernateUtil.currentSession().find(
"select a from MailAlias a left join fetch a.domain"
+ " left join fetch a.owner where a.name=?", name, Hibernate.STRING);
if(list.size() == 0)
return null;
else
return (MailAlias)list.get(0);
}
catch(HibernateException ex)
{
throw new ModelException(ex);
}
}
public void save(User editor, MailAlias mailAlias)
throws ModelException
{
if(!mailAlias.editableBy(editor))
throw new ModelSecurityException();
boolean isNew = mailAlias.isNew();
//mailAlias.setModUser(editor); // FIXME
try {
HibernateUtil.currentSession().saveOrUpdate(mailAlias);
}
catch(HibernateException ex)
{
throw new ModelException(ex);
}
// inform listeners
if(isNew) {
for(Iterator i = createdListeners.iterator(); i.hasNext(); ) {
MailAliasCreatedListener listener = (MailAliasCreatedListener)i.next();
listener.mailAliasCreated(editor, mailAlias);
}
}
else {
MailAlias oldMailAlias = mailAlias.getOrigin();
if(oldMailAlias == null) oldMailAlias = mailAlias;
for(Iterator i = modifiedListeners.iterator(); i.hasNext(); ) {
MailAliasModifiedListener listener = (MailAliasModifiedListener)i.next();
listener.mailAliasModified(editor, mailAlias, oldMailAlias);
}
}
}
public void addCreatedListener(MailAliasCreatedListener listener)
{
createdListeners.add(listener);
}
public void removeCreatedListener(MailAliasCreatedListener listener)
{
createdListeners.remove(listener);
}
public void addModifiedListener(MailAliasModifiedListener listener)
{
modifiedListeners.add(listener);
}
public void removeModifiedListener(MailAliasModifiedListener listener)
{
modifiedListeners.remove(listener);
}
public void addBeforeDeleteListener(MailAliasBeforeDeleteListener listener)
{
beforeDeleteListeners.add(listener);
}
public void removeBeforeDeleteListener(MailAliasBeforeDeleteListener listener)
{
beforeDeleteListeners.remove(listener);
}
public void addDeletingListener(MailAliasDeletingListener listener)
{
deletingListeners.add(listener);
}
public void removeDeletingListener(MailAliasDeletingListener listener)
{
deletingListeners.remove(listener);
}
public void addDeletedListener(MailAliasDeletedListener listener)
{
deletedListeners.add(listener);
}
public void removeDeletedListener(MailAliasDeletedListener listener)
{
deletedListeners.remove(listener);
}
public Collection beforeDelete(User editor, MailAlias mailAlias, Collection known)
throws ModelException
{
Collection cascade = new ArrayList();
for(Iterator i = beforeDeleteListeners.iterator(); i.hasNext(); ) {
MailAliasBeforeDeleteListener listener = (MailAliasBeforeDeleteListener)i.next();
Collection subcascade = listener.mailAliasBeforeDelete(editor, mailAlias, known);
if(subcascade != null)
cascade.addAll(subcascade);
}
return cascade;
}
public void delete(User editor, MailAlias mailAlias)
throws ModelException
{
// check rights
if(!mailAlias.deleteableBy(editor))
throw new ModelSecurityException();
// inform deleting listeners
for(Iterator i = deletingListeners.iterator(); i.hasNext(); ) {
MailAliasDeletingListener listener = (MailAliasDeletingListener)i.next();
listener.mailAliasDeleting(editor, mailAlias);
}
// backup copy
MailAlias oldMailAlias = new MailAlias(mailAlias);
// delete it
try {
HibernateUtil.currentSession().delete(mailAlias);
}
catch(HibernateException ex)
{
throw new ModelException(ex);
}
// inform deleted listeners
for(Iterator i = deletedListeners.iterator(); i.hasNext(); ) {
MailAliasDeletedListener listener = (MailAliasDeletedListener)i.next();
listener.mailAliasDeleted(editor, oldMailAlias);
}
}
public Collection listMailAliases(User editor)
throws ModelException
{
try {
if(editor.isSuperuser())
return HibernateUtil.currentSession().find(
"select a from MailAlias a left join fetch a.domain as d"
+ " left join fetch a.owner");
else
// FIXME: any problems for big lists or by pages?
return CollectionUtils.addUnique(
HibernateUtil.currentSession().find(
"select a from MailAlias a left join fetch a.domain as d"
+ " left join fetch a.owner"
+ " where d.owner=?",
new Object[] { editor }, new Type[] { Hibernate.entity(User.class) } ),
HibernateUtil.currentSession().find(
"select a from MailAlias a left join fetch a.domain as d"
+ " left join fetch a.owner"
+ " where a.owner=?",
new Object[] { editor }, new Type[] { Hibernate.entity(User.class) } ));
}
catch(HibernateException ex)
{
throw new ModelException(ex);
}
}
public boolean areMailAliasesAvailable(User editor)
throws ModelException
{
try {
if(editor.isSuperuser()
|| InetDomainManager.getInstance().areInetDomainsAvailable(editor))
{
return true;
}
else {
return ((Integer)HibernateUtil.currentSession().iterate(
"select count(*) from MailAlias a left join a.domain as d"
+ " where d.owner=? or a.owner=?",
new Object[] { editor, editor },
new Type[] { Hibernate.entity(User.class), Hibernate.entity(User.class) })
.next()).intValue() > 0;
}
}
catch(HibernateException ex)
{
throw new ModelException(ex);
}
}
public Collection userBeforeDelete(User editor, User user, Collection known)
throws ModelException
{
Collection mailAliases;
try {
mailAliases = HibernateUtil.currentSession().find(
"select a from MailAlias a left join fetch a.domain where a.owner = ?",
user, Hibernate.entity(User.class) );
}
catch(HibernateException ex)
{
throw new ModelException(ex);
}
return iterateBeforeDelete(editor, mailAliases, known);
}
public void userDeleting(User editor, User user)
throws ModelException
{
Collection mailAliases;
try {
mailAliases = HibernateUtil.currentSession().find(
"select a from MailAlias a left join fetch a.domain where a.owner = ?",
user, Hibernate.entity(User.class) );
}
catch(HibernateException ex)
{
throw new ModelException(ex);
}
for(Iterator i = mailAliases.iterator(); i.hasNext(); ) {
delete(editor, (MailAlias)i.next());
}
}
public Collection inetDomainBeforeDelete(User editor, InetDomain domain, Collection known)
throws ModelException
{
Collection mailAliases;
try {
mailAliases = HibernateUtil.currentSession().find(
"select a from MailAlias a left join fetch a.owner where a.domain = ?",
domain, Hibernate.entity(InetDomain.class) );
}
catch(HibernateException ex)
{
throw new ModelException(ex);
}
return iterateBeforeDelete(editor, mailAliases, known);
}
public void inetDomainDeleting(User editor, InetDomain domain)
throws ModelException
{
Collection mailAliases;
try {
mailAliases = HibernateUtil.currentSession().find(
"select a from MailAlias a left join fetch a.owner where a.domain = ?",
domain, Hibernate.entity(InetDomain.class) );
}
catch(HibernateException ex)
{
throw new ModelException(ex);
}
for(Iterator i = mailAliases.iterator(); i.hasNext(); ) {
delete(editor, (MailAlias)i.next());
}
}
private Collection iterateBeforeDelete(User editor, Collection mailAliases, Collection known)
throws ModelException
{
Collection cascade = new ArrayList();
for(Iterator i = mailAliases.iterator(); i.hasNext(); ) {
MailAlias mailAlias = (MailAlias)i.next();
if(mailAlias.viewableBy(editor)) {
if(mailAlias.deleteableBy(editor))
cascade.add(new CascadeDeleteElement(mailAlias, CascadeDeleteElement.DELETE,
this.beforeDelete(editor, mailAlias, known)));
else
cascade.add(new CascadeDeleteElement(mailAlias, CascadeDeleteElement.FORBIDDEN,
null));
}
else {
cascade.add(new CascadeDeleteElement(MailAlias.createLimitedCopy(mailAlias),
CascadeDeleteElement.FORBIDDEN, null));
}
}
return cascade;
}
public static final Comparator ADDRESS_COMPARATOR = new AddressComparator();
private static class AddressComparator
implements Comparator
{
public int compare(Object o1, Object o2)
{
if(!(o1 instanceof MailAlias) || !(o2 instanceof MailAlias))
throw new ClassCastException("not a MailAlias");
MailAlias a1 = (MailAlias)o1;
MailAlias a2 = (MailAlias)o2;
if(a1 == null && a2 == null)
return 0;
else if(a1 == null && a2 != null)
return -1;
else if(a1 != null && a2 == null)
return 1;
else
return a1.getAddress().compareToIgnoreCase(a2.getAddress());
}
public boolean equals(Object obj)
{
return (obj instanceof AddressComparator);
}
}
}