Examples of org.apache.torque.util.Criteria

org.apache.torque.util.Criteria
This is a utility class that is used for retrieving different types of values from a hashtable based on a simple name string. This class is meant to minimize the amount of casting that needs to be done when working with Hashtables. NOTE: other methods will be added as needed and as time permits. @author Frank Y. Kim @author John D. McNally @author Brett McLaughlin @author Eric Dobbs @author Henning P. Schmiedehausen @author Sam Joseph @author Martin Poeschl @author Thomas Fischer @author Scott Eade @version $Id: Criteria.java 332758 2005-11-12 11:15:21Z tfischer $

     *         backend.
     */
    public GroupSet getGroups(Criteria criteria)
            throws DataBackendException
    {
        Criteria dbCriteria = new Criteria();
        Iterator keys = criteria.keySet().iterator();
        while (keys.hasNext())
        {
            String key = (String) keys.next();
            dbCriteria.put(GroupPeer.getColumnName(key), criteria.get(key));
        }
        List groups = new ArrayList(0);
        try
        {
            groups = GroupPeer.doSelect(criteria);

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     *         backend.
     */
    public RoleSet getRoles(Criteria criteria)
            throws DataBackendException
    {
        Criteria dbCriteria = new Criteria();
        Iterator keys = criteria.keySet().iterator();
        while (keys.hasNext())
        {
            String key = (String) keys.next();
            dbCriteria.put(RolePeer.getColumnName(key), criteria.get(key));
        }
        List roles = new ArrayList(0);
        try
        {
            roles = RolePeer.doSelect(criteria);

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     *         backend.
     */
    public PermissionSet getPermissions(Criteria criteria)
            throws DataBackendException
    {
        Criteria dbCriteria = new Criteria();
        Iterator keys = criteria.keySet().iterator();
        while (keys.hasNext())
        {
            String key = (String) keys.next();
            dbCriteria.put(PermissionPeer.getColumnName(key),
                    criteria.get(key));
        }
        List permissions = new Vector(0);
        try
        {

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        try
        {
            groupExists = checkExists(group);
            if (groupExists)
            {
                Criteria criteria = GroupPeer.buildCriteria(group);
                GroupPeer.doUpdate(criteria);
                return;
            }
        }
        catch (Exception e)

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        try
        {
            roleExists = checkExists(role);
            if (roleExists)
            {
                Criteria criteria = RolePeer.buildCriteria(role);
                RolePeer.doUpdate(criteria);
                return;
            }
        }
        catch (Exception e)

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        try
        {
            permissionExists = checkExists(permission);
            if (permissionExists)
            {
                Criteria criteria = PermissionPeer.buildCriteria(permission);
                PermissionPeer.doUpdate(criteria);
                return;
            }
        }
        catch (Exception e)

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            lockExclusive();
            groupExists = checkExists(group);
            if (!groupExists)
            {
                // add a row to the table
                Criteria criteria = GroupPeer.buildCriteria(group);
                GroupPeer.doInsert(criteria);
                // try to get the object back using the name as key.
                criteria = new Criteria();
                criteria.add(GroupPeer.NAME,
                        group.getName());
                List results = GroupPeer.doSelect(criteria);
                if (results.size() != 1)
                {
                    throw new DataBackendException(

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            lockExclusive();
            roleExists = checkExists(role);
            if (!roleExists)
            {
                // add a row to the table
                Criteria criteria = RolePeer.buildCriteria(role);
                RolePeer.doInsert(criteria);
                // try to get the object back using the name as key.
                criteria = new Criteria();
                criteria.add(RolePeer.NAME, role.getName());
                List results = RolePeer.doSelect(criteria);
                if (results.size() != 1)
                {
                    throw new DataBackendException(
                            "Internal error - query returned "

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            lockExclusive();
            permissionExists = checkExists(permission);
            if (!permissionExists)
            {
                // add a row to the table
                Criteria criteria = PermissionPeer.buildCriteria(permission);
                PermissionPeer.doInsert(criteria);
                // try to get the object back using the name as key.
                criteria = new Criteria();
                criteria.add(PermissionPeer.NAME,
                        permission.getName());
                List results = PermissionPeer.doSelect(criteria);
                if (results.size() != 1)
                {
                    throw new DataBackendException(

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        {
            lockExclusive();
            groupExists = checkExists(group);
            if (groupExists)
            {
                Criteria criteria = GroupPeer.buildCriteria(group);
                GroupPeer.doDelete(criteria);
                getAllGroups().remove(group);
                return;
            }
        }

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