Examples of org.apache.lucene.misc.ChainedFilter

org.apache.lucene.misc.ChainedFilter

Allows multiple {@link Filter}s to be chained. Logical operations such as NOT and XOR are applied between filters. One operation can be used for all filters, or a specific operation can be declared for each filter.

Order in which filters are called depends on the position of the filter in the chain. It's probably more efficient to place the most restrictive filters /least computationally-intensive filters first.

          filters.add(new CachingWrapperFilter(new QueryWrapperFilter(filterQuery)));


        if (filters.size() == 1) {                // convert filters to filter
          filter = (Filter)filters.get(0);
        } else {
          filter = new ChainedFilter((Filter[])filters.toArray
                                     (new Filter[filters.size()]),
                                     ChainedFilter.AND);
        }
        if (!(filter instanceof CachingWrapperFilter))     // make sure bits are cached
          filter = new CachingWrapperFilter(filter);

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          filters.add(new QueryFilter(filterQuery));


        if (filters.size() == 1) {                // convert filters to filter
          filter = (Filter)filters.get(0);
        } else {
          filter = new ChainedFilter((Filter[])filters.toArray
                                     (new Filter[filters.size()]),
                                     ChainedFilter.AND);
        }
        if (!(filter instanceof QueryFilter))     // make sure bits are cached
          filter = new CachingWrapperFilter(filter);

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          filters.add(new QueryFilter(filterQuery));


        if (filters.size() == 1) {                // convert filters to filter
          filter = (Filter)filters.get(0);
        } else {
          filter = new ChainedFilter((Filter[])filters.toArray
                                     (new Filter[filters.size()]),
                                     ChainedFilter.AND);
        }
        if (!(filter instanceof QueryFilter))     // make sure bits are cached
          filter = new CachingWrapperFilter(filter);

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          filters.add(new CachingWrapperFilter(new QueryWrapperFilter(filterQuery)));


        if (filters.size() == 1) {                // convert filters to filter
          filter = (Filter)filters.get(0);
        } else {
          filter = new ChainedFilter((Filter[])filters.toArray
                                     (new Filter[filters.size()]),
                                     ChainedFilter.AND);
        }
        if (!(filter instanceof CachingWrapperFilter))     // make sure bits are cached
          filter = new CachingWrapperFilter(filter);

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          filters.add(new QueryFilter(filterQuery));


        if (filters.size() == 1) {                // convert filters to filter
          filter = (Filter)filters.get(0);
        } else {
          filter = new ChainedFilter((Filter[])filters.toArray
                                     (new Filter[filters.size()]),
                                     ChainedFilter.AND);
        }
        if (!(filter instanceof QueryFilter))     // make sure bits are cached
          filter = new CachingWrapperFilter(filter);

View Full Code Here

          filters.add(new QueryFilter(filterQuery));


        if (filters.size() == 1) {                // convert filters to filter
          filter = (Filter)filters.get(0);
        } else {
          filter = new ChainedFilter((Filter[])filters.toArray
                                     (new Filter[filters.size()]),
                                     ChainedFilter.AND);
        }
        if (!(filter instanceof QueryFilter))     // make sure bits are cached
          filter = new CachingWrapperFilter(filter);

View Full Code Here

    // Chain the Query (as filter) with our distance filter
    if (distanceFilter != null) {
      distanceFilter.reset();
    }
    QueryWrapperFilter qf = new QueryWrapperFilter(query);
    return new ChainedFilter(new Filter[] {qf, filter},
                             ChainedFilter.AND);
  }

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