Subversion Repositories general

package ak.hostadmiral.core.model;

import java.util.*;

import net.sf.hibernate.*;

import net.sf.hibernate.type.Type;

import ak.hostadmiral.util.HibernateUtil;

import ak.hostadmiral.util.ModelException;

import ak.hostadmiral.util.ModelSecurityException;

public class InetDomainManager

	implements

		UserBeforeDeleteListener,

		UserDeletingListener

{

	private static InetDomainManager inetDomainManager = null;

	private static boolean registered = false;

	public static InetDomainManager getInstance()

	{

		return inetDomainManager;

	}

	protected static void register()

	{

		synchronized(InetDomainManager.class) {

			if(registered) return;

			registered = true;

			try {

				HibernateUtil.getConfiguration().addResource(

					"ak/hostadmiral/core/model/InetDomain.hbm.xml");

				inetDomainManager = new InetDomainManager();

			}

			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 InetDomainManager()

	{

		UserManager.getInstance().addBeforeDeleteListener(this);

		UserManager.getInstance().addDeletingListener(this);

	}

	public InetDomain create(User editor)

		throws ModelException

	{

		if(!allowedToCreate(editor)) throw new ModelSecurityException();

		return new InetDomain();

	}

	public boolean allowedToCreate(User editor)

		throws ModelException

	{

		return InetDomain.allowedToCreate(this, editor);

	}

	public InetDomain get(User editor, Long id)

		throws ModelException

	{

		InetDomain domain;

		try {

			domain = (InetDomain)HibernateUtil.currentSession().load(

				InetDomain.class, id);

		}

		catch(HibernateException ex)

		{

			throw new ModelException(ex);

		}

		if(!domain.viewableBy(editor))

			throw new ModelSecurityException();

		return domain;

	}

	public boolean nameExists(User editor, InetDomain domain, String name)

		throws ModelException

	{

		try {

			if(domain.getId() == null)

				return ((Integer)HibernateUtil.currentSession().iterate(

					"select count(*) from InetDomain d where name = ?",

					name, Hibernate.STRING)

					.next()).intValue() > 0;

			else

				return ((Integer)HibernateUtil.currentSession().iterate(

					"select count(*) from InetDomain d where name = ? and d != ?",

					new Object[] { name, domain },

					new Type[] { Hibernate.STRING, Hibernate.entity(InetDomain.class) } )

					.next()).intValue() > 0;

		}

		catch(HibernateException ex)

		{

			throw new ModelException(ex);

		}

	}

	protected InetDomain findForName(String name)

		throws ModelException

	{

		try {

			List list = HibernateUtil.currentSession().find(

				"select d from InetDomain d left join fetch d.owner where d.name=?",

				name, Hibernate.STRING);

			if(list.size() == 0)

				return null;

			else

				return (InetDomain)list.get(0);

		}

		catch(HibernateException ex)

		{

			throw new ModelException(ex);

		}

	}

	public void save(User editor, InetDomain domain)

		throws ModelException

	{

		if(!domain.editableBy(editor))

			throw new ModelSecurityException();

        boolean isNew = domain.isNew();

		//domain.setModUser(editor); // FIXME

		try {

			HibernateUtil.currentSession().saveOrUpdate(domain);

		}

		catch(HibernateException ex)

		{

			throw new ModelException(ex);

		}

        // inform listeners

        if(isNew) {

        	for(Iterator i = createdListeners.iterator(); i.hasNext(); ) {

        		InetDomainCreatedListener listener = (InetDomainCreatedListener)i.next();

    			listener.inetDomainCreated(editor, domain);

        	}

        }

        else {

            InetDomain oldDomain = domain.getOrigin();

            if(oldDomain == null) oldDomain = domain;

        	for(Iterator i = modifiedListeners.iterator(); i.hasNext(); ) {

        		InetDomainModifiedListener listener = (InetDomainModifiedListener)i.next();

    			listener.inetDomainModified(editor, domain, oldDomain);

        	}

        }

	}

    public void addCreatedListener(InetDomainCreatedListener listener)

    {

    	createdListeners.add(listener);

    }

    public void removeCreatedListener(InetDomainCreatedListener listener)

    {

    	createdListeners.remove(listener);

    }

    public void addModifiedListener(InetDomainModifiedListener listener)

    {

    	modifiedListeners.add(listener);

    }

    public void removeModifiedListener(InetDomainModifiedListener listener)

    {

    	modifiedListeners.remove(listener);

    }

    public void addBeforeDeleteListener(InetDomainBeforeDeleteListener listener)

    {

    	beforeDeleteListeners.add(listener);

    }

    public void removeBeforeDeleteListener(InetDomainBeforeDeleteListener listener)

    {

    	beforeDeleteListeners.remove(listener);

    }

    public void addDeletingListener(InetDomainDeletingListener listener)

    {

    	deletingListeners.add(listener);

    }

    public void removeDeletingListener(InetDomainDeletingListener listener)

    {

    	deletingListeners.remove(listener);

    }

    public void addDeletedListener(InetDomainDeletedListener listener)

    {

    	deletedListeners.add(listener);

    }

    public void removeDeletedListener(InetDomainDeletedListener listener)

    {

    	deletedListeners.remove(listener);

    }

    public Collection beforeDelete(User editor, InetDomain domain, Collection known)

		throws ModelException

    {

    	Collection cascade = new ArrayList();

    	for(Iterator i = beforeDeleteListeners.iterator(); i.hasNext(); ) {

    		InetDomainBeforeDeleteListener listener = (InetDomainBeforeDeleteListener)i.next();

			Collection subcascade = listener.inetDomainBeforeDelete(editor, domain, known);

    		if(subcascade != null)

    			cascade.addAll(subcascade);

    	}

    	return cascade;

    }

	public void delete(User editor, InetDomain domain)

		throws ModelException

	{

	    // check rights

		if(!domain.deleteableBy(editor))

			throw new ModelSecurityException();

        // inform deleting listeners

    	for(Iterator i = deletingListeners.iterator(); i.hasNext(); ) {

    		InetDomainDeletingListener listener = (InetDomainDeletingListener)i.next();

			listener.inetDomainDeleting(editor, domain);

    	}

        // backup copy

        InetDomain oldDomain = new InetDomain(domain);

        // delete it

		try {

			HibernateUtil.currentSession().delete(domain);

		}

		catch(HibernateException ex)

		{

			throw new ModelException(ex);

		}

        // inform deleted listeners

    	for(Iterator i = deletedListeners.iterator(); i.hasNext(); ) {

    		InetDomainDeletedListener listener = (InetDomainDeletedListener)i.next();

			listener.inetDomainDeleted(editor, oldDomain);

    	}

	}

	public Collection listInetDomains(User editor)

		throws ModelException

	{

		try {

			if(editor.isSuperuser())

				return HibernateUtil.currentSession().find(

					"select d from InetDomain d left join fetch d.owner");

			else

				return HibernateUtil.currentSession().find(

					"select d from InetDomain d where d.owner=?",

					editor, Hibernate.entity(User.class));

		}

		catch(HibernateException ex)

		{

			throw new ModelException(ex);

		}

	}

	public boolean areInetDomainsAvailable(User editor)

		throws ModelException

	{

		try {

			if(editor.isSuperuser())

				return true;

			else

				return ((Integer)HibernateUtil.currentSession().iterate(

					"select count(*) from InetDomain where owner=?",

					editor, 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 domains;

		try {

			domains = HibernateUtil.currentSession().find(

				"select d from InetDomain d where d.owner = ?",

				user, Hibernate.entity(User.class) );

		}

		catch(HibernateException ex)

		{

			throw new ModelException(ex);

		}

    	Collection cascade = new ArrayList();

		for(Iterator i = domains.iterator(); i.hasNext(); ) {

			InetDomain d = (InetDomain)i.next();

            if(d.viewableBy(editor)) {

				if(d.deleteableBy(editor))

					cascade.add(new CascadeDeleteElement(d, CascadeDeleteElement.DELETE,

						this.beforeDelete(editor, d, known)));

				else

					cascade.add(new CascadeDeleteElement(d, CascadeDeleteElement.FORBIDDEN, null));

			}

			else {

				cascade.add(new CascadeDeleteElement(InetDomain.createLimitedCopy(d),

					CascadeDeleteElement.FORBIDDEN, null));

			}

		}

    	return cascade;

	}

	public void userDeleting(User editor, User user)

		throws ModelException

	{

        Collection domains;

		try {

			domains = HibernateUtil.currentSession().find(

				"select d from InetDomain d where d.owner = ?",

				user, Hibernate.entity(User.class) );

		}

		catch(HibernateException ex)

		{

			throw new ModelException(ex);

		}

		for(Iterator i = domains.iterator(); i.hasNext(); ) {

			delete(editor, (InetDomain)i.next());

		}

	}

	public static final Comparator NAME_COMPARATOR = new NameComparator();

	private static class NameComparator

		implements Comparator

	{

		public int compare(Object o1, Object o2)

		{

			if(!(o1 instanceof InetDomain) || !(o2 instanceof InetDomain))

				throw new ClassCastException("not a InetDomain");

		    InetDomain a1 = (InetDomain)o1;

		    InetDomain a2 = (InetDomain)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.getName().compareToIgnoreCase(a2.getName());

		}

		public boolean equals(Object obj)

		{

			return (obj instanceof NameComparator);

		}

	}

}