Examples of org.hibernate.search.engine.Loader

org.hibernate.search.engine.Loader
Interface defining a set of operations in order to load entities which matched a query. Depending on the type of indexed entities and the type of query different strategies can be used. @author Emmanuel Bernard

   * projections or <code>Criteria</code> are used.
   *
   * @return The loader instance to use to load the results of the query.
   */
  private Loader getLoader() {
    Loader loader;
    if ( indexProjection != null ) {
      loader = getProjectionLoader();
    }
    else if ( criteria != null ) {
      loader = getCriteriaLoader();

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      int first = first();
      int max = max( first, queryHits.totalHits );
      DocumentExtractor extractor = new DocumentExtractor(
          queryHits, searchFactoryImplementor, indexProjection, idFieldNames, allowFieldSelectionInProjection
      );
      Loader loader = getLoader();
      return new ScrollableResultsImpl(
          searcher, first, max, fetchSize, extractor, loader, searchFactoryImplementor, this.session
      );
    }
    catch ( IOException e ) {

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          queryHits, searchFactoryImplementor, indexProjection, idFieldNames, allowFieldSelectionInProjection
      );
      for ( int index = first; index <= max; index++ ) {
        infos.add( extractor.extract( index ) );
      }
      Loader loader = getLoader();
      List list = loader.load( infos.toArray( new EntityInfo[infos.size()] ) );
      if ( resultTransformer == null || loader instanceof ProjectionLoader ) {
        //stay consistent with transformTuple which can only be executed during a projection
        return list;
      }
      else {

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          queryHits, searchFactoryImplementor, indexProjection, idFieldNames, allowFieldSelectionInProjection
      );
      for ( int index = first; index <= max; index++ ) {
        infos.add( extractor.extract( index ) );
      }
      Loader loader = getLoader();
      return new IteratorImpl( infos, loader );
    }
    catch ( IOException e ) {
      throw new HibernateException( "Unable to query Lucene index", e );
    }

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   * projections or <code>Criteria</code> are used.
   *
   * @return The loader instance to use to load the results of the query.
   */
  private Loader getLoader() {
    Loader loader;
    if ( indexProjection != null ) {
      loader = getProjectionLoader();
    }
    else if ( criteria != null ) {
      loader = getCriteriaLoader();

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      int first = first();
      int max = max( first, queryHits.totalHits );
      DocumentExtractor extractor = new DocumentExtractor(
          queryHits, searchFactoryImplementor, indexProjection, idFieldNames, allowFieldSelectionInProjection
      );
      Loader loader = getLoader();
      return new ScrollableResultsImpl(
          searcher, first, max, fetchSize, extractor, loader, searchFactoryImplementor, this.session
      );
    }
    catch ( IOException e ) {

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          queryHits, searchFactoryImplementor, indexProjection, idFieldNames, allowFieldSelectionInProjection
      );
      for ( int index = first; index <= max; index++ ) {
        infos.add( extractor.extract( index ) );
      }
      Loader loader = getLoader();
      List list = loader.load( infos.toArray( new EntityInfo[infos.size()] ) );
      if ( resultTransformer == null || loader instanceof ProjectionLoader ) {
        //stay consistent with transformTuple which can only be executed during a projection
        return list;
      }
      else {

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          queryHits, searchFactoryImplementor, indexProjection, idFieldNames, allowFieldSelectionInProjection
      );
      for ( int index = first; index <= max; index++ ) {
        infos.add( extractor.extract( index ) );
      }
      Loader loader = getLoader( sess, searchFactoryImplementor );
      return new IteratorImpl( infos, loader );
    }
    catch ( IOException e ) {
      throw new HibernateException( "Unable to query Lucene index", e );
    }

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      int first = first();
      int max = max( first, queryHits.totalHits );
      DocumentExtractor extractor = new DocumentExtractor(
          queryHits, searchFactory, indexProjection, idFieldNames, allowFieldSelectionInProjection
      );
      Loader loader = getLoader( ( Session ) this.session, searchFactory );
      return new ScrollableResultsImpl(
          searcher, first, max, fetchSize, extractor, loader, searchFactory
      );
    }
    catch ( IOException e ) {

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          queryHits, searchFactoryImplementor, indexProjection, idFieldNames, allowFieldSelectionInProjection
      );
      for ( int index = first; index <= max; index++ ) {
        infos.add( extractor.extract( index ) );
      }
      Loader loader = getLoader( sess, searchFactoryImplementor );
      List list = loader.load( infos.toArray( new EntityInfo[infos.size()] ) );
      if ( resultTransformer == null || loader instanceof ProjectionLoader ) {
        //stay consistent with transformTuple which can only be executed during a projection
        return list;
      }
      else {

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