Examples of org.apache.ojb.broker.query.Criteria

org.apache.ojb.broker.query.Criteria
Persistent Criteria can be used to retrieve sets of objects based on their attributes Normally each attribute is ANDed together, an OR can be performed by creating a new PersistentCriteria and adding it.
Criteria are used, rather than a simple string, because they can be precompiled for efficiency. This code is based on stuff from COBRA - Java Object Persistence Layer Copyright (C) 1997, 1998 DB Harvey-George eMail: cobra@lowrent.org @author Jakob Braeuchi @version $Id: Criteria.java,v 1.45.2.5 2005/12/21 22:27:09 tomdz Exp $

            JetspeedPreferencesMap map = (JetspeedPreferencesMap)cachedElement.getContent();
            return map;
        }            
        // not found in cache, lookup in database
        JetspeedPreferencesMap map = new JetspeedPreferencesMap(); 
        Criteria c = new Criteria();
        c.addEqualTo("dtype", DISCRIMINATOR_USER);
        c.addEqualTo("applicationName", appName);
        c.addEqualTo("portletName", portletName);
        c.addEqualTo("entityId", entityId);
        c.addEqualTo("userName", userName);
        QueryByCriteria query = QueryFactory.newQuery(DatabasePreference.class, c);
        Iterator<DatabasePreference> preferences = getPersistenceBrokerTemplate().getIteratorByQuery(query);
        while (preferences.hasNext())
        {
            DatabasePreference preference = preferences.next();

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        {
            String appName = window.getPortletDefinition().getApplication().getName();
            String portletName = window.getPortletDefinition().getPortletName();
            String entityId = window.getPortletEntityId();        
            // always read in to get a fresh copy for merge
            Criteria c = new Criteria();
            c.addEqualTo("dtype", DISCRIMINATOR_USER);
            c.addEqualTo("applicationName", appName);
            c.addEqualTo("portletName", portletName);
            c.addEqualTo("entityId", entityId);
            c.addEqualTo("userName", userName);
            QueryByCriteria query = QueryFactory.newQuery(DatabasePreference.class, c);
            Map<String, DatabasePreference> mergeMap = new HashMap<String, DatabasePreference>();
            List<DatabasePreference> deletes = new LinkedList<DatabasePreference>();
            List<DatabasePreference> updates = new LinkedList<DatabasePreference>();
            List<PortletPreference> inserts = new LinkedList<PortletPreference>();

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        }


        // retrieve page element from database
        try
        {
            Criteria filter = new Criteria();
            filter.addEqualTo("path", path);
            QueryByCriteria query = QueryFactory.newQuery(fragmentsElementImplType, filter);
            BaseFragmentsElement fragmentsElement = (BaseFragmentsElement)getPersistenceBrokerTemplate().getObjectByQuery(query);
            
            // return page element or throw exception
            if (fragmentsElement == null)

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        }


        // retrieve link from database
        try
        {
            Criteria filter = new Criteria();
            filter.addEqualTo("path", path);
            QueryByCriteria query = QueryFactory.newQuery(LinkImpl.class, filter);
            Link link = (Link)getPersistenceBrokerTemplate().getObjectByQuery(query);
            
            // return link or throw exception
            if (link == null)

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     * Jetspeed: PortletPreferencesProvider
     */
    public void preloadApplicationPreferences(String portletApplicationName)
    {
        JetspeedPreferencesMap map = new JetspeedPreferencesMap();
        Criteria c = new Criteria();
        c.addEqualTo("dtype", DISCRIMINATOR_PORTLET);
        c.addEqualTo("applicationName", portletApplicationName);
        
        String previousPortletName = "";
        QueryByCriteria query = QueryFactory.newQuery(DatabasePreference.class, c);
        query.addOrderByAscending("dtype");
        query.addOrderByAscending("applicationName");

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        }


        // retrieve document from database
        try
        {
            Criteria filter = new Criteria();
            filter.addEqualTo("path", path);
            QueryByCriteria query = QueryFactory.newQuery(PageSecurityImpl.class, filter);
            PageSecurity document = (PageSecurity)getPersistenceBrokerTemplate().getObjectByQuery(query);
            
            // return page or throw exception
            if (document == null)

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     * Jetspeed: PortletPreferencesProvider
     */    
    public void preloadUserPreferences()
    {
        JetspeedPreferencesMap map = new JetspeedPreferencesMap();
        Criteria c = new Criteria();
        c.addEqualTo("dtype", DISCRIMINATOR_USER);        
        String previousKey = "";
        QueryByCriteria query = QueryFactory.newQuery(DatabasePreference.class, c);
        query.addOrderByAscending("dtype");
        query.addOrderByAscending("applicationName");
        query.addOrderByAscending("portletName");

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    {
        String appName = pd.getApplication().getName();
        String portletName = pd.getPortletName();
        String preferenceName = preference.getName();
        
        Criteria c = new Criteria();
        c.addEqualTo("dtype", DISCRIMINATOR_PORTLET);
        c.addEqualTo("applicationName", appName);
        c.addEqualTo("portletName", portletName);
        c.addEqualTo("entityId", EMPTY_VALUE);
        c.addEqualTo("userName", EMPTY_VALUE);
        c.addEqualTo("name", preferenceName);
        QueryByCriteria query = QueryFactory.newQuery(DatabasePreference.class, c);
        DatabasePreference dbPref = (DatabasePreference) getPersistenceBrokerTemplate().getObjectByQuery(query);
        
        if (dbPref == null)
        {

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        }


        // retrieve folder from database
        try
        {
            Criteria filter = new Criteria();
            filter.addEqualTo("path", folderPath);
            QueryByCriteria query = QueryFactory.newQuery(FolderImpl.class, filter);
            Folder folder = (Folder)getPersistenceBrokerTemplate().getObjectByQuery(query);
            
            // return folder or throw exception
            if (folder == null)

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        // perform lookup of folder folders collection and cache in folder
        try
        {
            // query for folders
            Criteria filter = new Criteria();
            filter.addEqualTo("parent", new Integer(folderImpl.getIdentity()));
            QueryByCriteria query = QueryFactory.newQuery(FolderImpl.class, filter);
            Collection folders = getPersistenceBrokerTemplate().getCollectionByQuery(query);


            // cache folders in folder
            folderImpl.accessFolders().clear();

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