#### Discovery Filter

The Discovery Filter controller is used to implement the `discoverySelectors` field of `MeshConfig`. This controller reads `Namespace`s in the cluster to determine if they should be "selected". Many controllers consumer this filter to only process a subset of configurations.

#### Multicluster

import java.util.Arrays;
import java.util.Collections;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.artifact.resolver.filter.ExcludesArtifactFilter;
import org.apache.maven.repository.DelegatingLocalArtifactRepository;
import org.apache.maven.repository.RepositorySystem;
import org.apache.maven.repository.TestRepositorySystem;

            try {
                try (Writer writer = new BufferedWriter(new OutputStreamWriter(Files.newOutputStream(tempFile), getCsvEncoding()))) {
                    elevateWordService.exportCsv(writer);
                } catch (final Exception e) {
                    logger.warn("Failed to process a request.", e);

 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.artifact.resolver.filter;

import org.apache.maven.artifact.Artifact;

/**
 * InversionArtifactFilter
 */
@Deprecated
public class InversionArtifactFilter implements ArtifactFilter {
    private final ArtifactFilter toInvert;

	"http://dbflute.org/meta/lastadi10.dtd">
<components namespace="fessCrawler">
	<include path="crawler/container.xml"/>
	<include path="crawler/client.xml"/>
	<include path="crawler/rule.xml"/>
	<include path="crawler/filter.xml"/>
	<include path="crawler/interval.xml"/>
	<include path="crawler/extractor.xml"/>
	<include path="crawler/mimetype.xml"/>
	<include path="crawler/encoding.xml"/>
	<include path="crawler/urlconverter.xml"/>

      } catch (InterruptedException e) {
        /* ignore */
      }
      try {
        // Fill up heap so soft references get cleared.
        filler = new byte[max(filler.length, filler.length * 2)];
      } catch (OutOfMemoryError e) {
      }
    }

    CacheTesting.processPendingNotifications(cache);
    assertEquals(1, cache.size());
    assertEquals(1, removalListener.getCount());
  }

 * method minus filenames filtered by the specified filter.
 *
 * @param filter a filename filter to exclude filenames from the results
 * @throws SmbException
 # @return An array of filenames
 */
    public String[] list( SmbFilenameFilter filter ) throws SmbException {
        return list( "*", ATTR_DIRECTORY | ATTR_HIDDEN | ATTR_SYSTEM, filter, null );
    }

/**

  static <E extends @Nullable Object> Collection<E> filterCollection(
      Collection<E> collection, Predicate<? super E> predicate) {
    if (collection instanceof Set) {
      return Sets.filter((Set<E>) collection, predicate);
    } else {
      return Collections2.filter(collection, predicate);
    }
  }

  @Override
  public boolean containsKey(@CheckForNull Object key) {
    return asMap().get(key) != null;
  }

  @Override

        // set function score
        final QueryBuilder queryBuilder = buildFunctionScoreQuery(query, q);
        builder.addSort("_score", SortOrder.DESC);

        // set filter query.
        final List<QueryBuilder> filterList = new ArrayList<>(10);
        if (!tags.isEmpty()) {
            filterList.add(buildFilterQuery(FieldNames.TAGS, tags));
        }

        if (childUrlSet != null) {
            // add an url
            try {
                storeChildUrls(childUrlSet.stream().filter(rd -> StringUtil.isNotBlank(rd.getUrl())).collect(Collectors.toSet()),
                        urlQueue.getUrl(), urlQueue.getDepth() != null ? urlQueue.getDepth() + 1 : 1);
            } catch (final Throwable t) {