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 $


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


            // cache pages in folder
            folderImpl.accessPages().clear();

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    /**
     * Jetspeed: PortletPreferencesProvider
     */    
    public void removeDefaults(org.apache.jetspeed.om.portlet.PortletDefinition pd)
    {
        Criteria c = new Criteria();
        c.addEqualTo("dtype", DISCRIMINATOR_PORTLET);
        c.addEqualTo("applicationName", pd.getApplication().getName());
        c.addEqualTo("portletName", pd.getPortletName());                
        QueryByCriteria query = QueryFactory.newQuery(DatabasePreference.class, c);
        getPersistenceBrokerTemplate().deleteByQuery(query);
        String defaultsCacheKey = getPortletPreferenceKey(pd.getApplication().getName(), pd.getPortletName());            
        preferenceCache.remove(defaultsCacheKey);
    }

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


            // cache page templates in folder
            folderImpl.accessPageTemplates().clear();

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


            // cache dynamic pages in folder
            folderImpl.accessDynamicPages().clear();

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        preferenceCache.remove(defaultsCacheKey);
    }


    public void removeDefaults(org.apache.jetspeed.om.portlet.PortletDefinition pd, String preferenceName)
    {
        Criteria c = new Criteria();
        c.addEqualTo("dtype", DISCRIMINATOR_PORTLET);
        c.addEqualTo("applicationName", pd.getApplication().getName());
        c.addEqualTo("portletName", pd.getPortletName());
        c.addEqualTo("name", preferenceName);
        QueryByCriteria query = QueryFactory.newQuery(DatabasePreference.class, c);
        getPersistenceBrokerTemplate().deleteByQuery(query);
        
        String defaultsCacheKey = getPortletPreferenceKey(pd.getApplication().getName(), pd.getPortletName());
        JetspeedPreferencesMap map = (JetspeedPreferencesMap) preferenceCache.get(defaultsCacheKey).getContent();

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    {
        if (null == clients)
        {
      try
      {
        QueryByCriteria query = QueryFactory.newQuery(getClientClass(), new Criteria());
              query.addOrderByAscending("evalOrder");
              this.clients = getPersistenceBrokerTemplate().getCollectionByQuery(query);
        }
        catch (Exception e)
        {

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     */
    public Collection getMediaTypesForMimeTypes(Iterator mimetypes)
    {
        //Find the MediaType by matching the Mimetype
        
        Criteria filter = new Criteria();


        Vector temp = new Vector();
        // Add Mimetypes to map and create query
        while (mimetypes.hasNext())
        {
            MimeType mt = (MimeType) mimetypes.next();


            // Add mimetype to query
            // Note: mimetypes is a member of MediaTypeImpl
            // criteria.addEqualTo("mimetypes.name", mt.getName());
            //stuff.add(new Integer(mt.getMimetypeId()));
            temp.add(mt.getName());
        }
        
        Collection co = null;
        if (temp.size() > 0)
        {
      try
      {
        filter.addIn("mimetypes.name", temp);
                  QueryByCriteria query = QueryFactory.newQuery(getMediaTypeClass(), filter);
                  co = getPersistenceBrokerTemplate().getCollectionByQuery(query);            
      }
      catch (Exception e)
      {

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     */
    public MediaType getMediaType(String mediaType)
    {        
      try
      {
          Criteria filter = new Criteria();        
          filter.addEqualTo("name", mediaType);
          QueryByCriteria query = QueryFactory.newQuery(getMediaTypeClass(), filter);
          return (MediaType) getPersistenceBrokerTemplate().getObjectByQuery(query);                   
    }
    catch (Exception e)
    {

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    {               
        //Find the MediaType by matching the Mimetype
      Collection mediaTypeCollection = null;
    try
    {
          Criteria filter = new Criteria();       
          filter.addEqualTo("mimetypes.name", mimeTypeName);
          
          QueryByCriteria query = QueryFactory.newQuery(getMediaTypeClass(), filter);
          mediaTypeCollection = getPersistenceBrokerTemplate().getCollectionByQuery(query);                    
    }
    catch (Exception e)

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    public Iterator getCapabilities()
    {
      QueryByCriteria query = null;
    try
    {
      query = QueryFactory.newQuery(getCapabilityClass(), new Criteria());
    }
    catch (Exception e)
    {
          String message =
              "CapabilityServiceImpl: getCapabilities query used invalid class ";

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