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

org.apache.ojb.broker.query.QueryByCriteria
represents a search by criteria. "find all articles where article.price > 100" could be represented as: Criteria crit = new Criteria(); crit.addGreaterThan("price", new Double(100)); Query qry = new QueryByCriteria(Article.class, crit); The PersistenceBroker can retrieve Objects by Queries as follows: PersistenceBroker broker = PersistenceBrokerFactory.createPersistenceBroker(); Collection col = broker.getCollectionByQuery(qry); Creation date: (24.01.2001 21:45:46) @author Thomas Mahler @version $Id: QueryByCriteria.java,v 1.26.2.4 2005/12/21 22:27:09 tomdz Exp $

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

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        if (temp.size() > 0)
        {
      try
      {
        filter.addIn("mimetypes.name", temp);
                  QueryByCriteria query = QueryFactory.newQuery(getMediaTypeClass(), filter);
                  co = getPersistenceBrokerTemplate().getCollectionByQuery(query);            
      }
      catch (Exception e)
      {
          String message =

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

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    try
    {
          Criteria filter = new Criteria();       
          filter.addEqualTo("mimetypes.name", mimeTypeName);
          
          QueryByCriteria query = QueryFactory.newQuery(getMediaTypeClass(), filter);
          mediaTypeCollection = getPersistenceBrokerTemplate().getCollectionByQuery(query);                    
    }
    catch (Exception e)
    {
          String message =

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     * Obtain an iterator of all existing capabilities.
     * @return Returns an iterator for all existing Capabilities of type <code>Capability</code>
     */
    public Iterator getCapabilities()
    {
      QueryByCriteria query = null;
    try
    {
      query = QueryFactory.newQuery(getCapabilityClass(), new Criteria());
    }
    catch (Exception e)
    {
          String message =
              "CapabilityServiceImpl: getCapabilities query used invalid class ";
          log.error(message, e);
          return null;
    }
        query.addOrderByAscending("name");
        return getPersistenceBrokerTemplate().getCollectionByQuery(query).iterator();        
    }

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     */
    public Iterator getMimeTypes()
    {
    try
    {
      QueryByCriteria query = QueryFactory.newQuery(getMimeTypeClass(), new Criteria());
          query.addOrderByAscending("name");
          return getPersistenceBrokerTemplate().getCollectionByQuery(query).iterator();                
    }
    catch (Exception e)
    {
          String message =

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     */
    public Iterator getMediaTypes()
    {
    try
    {
      QueryByCriteria query = QueryFactory.newQuery(getMediaTypeClass(), new Criteria());
          query.addOrderByAscending("name");
          return getPersistenceBrokerTemplate().getCollectionByQuery(query).iterator();                        
    }
    catch (Exception e)
    {
          String message =

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