Package org.apache.nutch.util

Examples of org.apache.nutch.util.ObjectCache

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    }
  }

  public static CollectionManager getCollectionManager(Configuration conf) {
    String key = "collectionmanager";
    ObjectCache objectCache = ObjectCache.get(conf);
    CollectionManager impl = (CollectionManager) objectCache.getObject(key);
    if (impl == null) {
      try {
        if (LOG.isInfoEnabled()) {
          LOG.info("Instantiating CollectionManager");
        }
        impl = new CollectionManager(conf);
        objectCache.setObject(key, impl);
      } catch (Exception e) {
        throw new RuntimeException("Couldn't create CollectionManager",
            e);
      }
    }
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    }
  }

  public static CollectionManager getCollectionManager(Configuration conf) {
    String key = "collectionmanager";
    ObjectCache objectCache = ObjectCache.get(conf);
    CollectionManager impl = (CollectionManager) objectCache.getObject(key);
    if (impl == null) {
      try {
        if (LOG.isInfoEnabled()) {
          LOG.info("Instantiating CollectionManager");
        }
        impl = new CollectionManager(conf);
        objectCache.setObject(key, impl);
      } catch (Exception e) {
        throw new RuntimeException("Couldn't create CollectionManager",
            e);
      }
    }
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  public URLNormalizers(Configuration conf, String scope) {
    this.conf = conf;
    this.extensionPoint = PluginRepository.get(conf).getExtensionPoint(
            URLNormalizer.X_POINT_ID);
    ObjectCache objectCache = ObjectCache.get(conf);
   
    if (this.extensionPoint == null) {
      throw new RuntimeException("x point " + URLNormalizer.X_POINT_ID
              + " not found.");
    }

    normalizers = (URLNormalizer[])objectCache.getObject(URLNormalizer.X_POINT_ID + "_" + scope);
    if (normalizers == null) {
      normalizers = getURLNormalizers(scope);
    }
    if (normalizers == EMPTY_NORMALIZERS) {
      normalizers = (URLNormalizer[])objectCache.getObject(URLNormalizer.X_POINT_ID + "_" + SCOPE_DEFAULT);
      if (normalizers == null) {
        normalizers = getURLNormalizers(SCOPE_DEFAULT);
      }
    }
   
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   *         scope.
   * @throws PluginRuntimeException
   */
  URLNormalizer[] getURLNormalizers(String scope) {
    List<Extension> extensions = getExtensions(scope);
    ObjectCache objectCache = ObjectCache.get(conf);
   
    if (extensions == EMPTY_EXTENSION_LIST) {
      return EMPTY_NORMALIZERS;
    }
   
    List<URLNormalizer> normalizers = new Vector<URLNormalizer>(extensions.size());

    Iterator<Extension> it = extensions.iterator();
    while (it.hasNext()) {
      Extension ext = it.next();
      URLNormalizer normalizer = null;
      try {
        // check to see if we've cached this URLNormalizer instance yet
        normalizer = (URLNormalizer) objectCache.getObject(ext.getId());
        if (normalizer == null) {
          // go ahead and instantiate it and then cache it
          normalizer = (URLNormalizer) ext.getExtensionInstance();
          objectCache.setObject(ext.getId(), normalizer);
        }
        normalizers.add(normalizer);
      } catch (PluginRuntimeException e) {
        e.printStackTrace();
        LOG.warn("URLNormalizers:PluginRuntimeException when "
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   *         empty list.
   * @throws PluginRuntimeException
   */
  @SuppressWarnings("unchecked")
  private List<Extension> getExtensions(String scope) {
    ObjectCache objectCache = ObjectCache.get(conf);
    List<Extension> extensions =
      (List<Extension>) objectCache.getObject(URLNormalizer.X_POINT_ID + "_x_"
                                                + scope);

    // Just compare the reference:
    // if this is the empty list, we know we will find no extension.
    if (extensions == EMPTY_EXTENSION_LIST) {
      return EMPTY_EXTENSION_LIST;
    }

    if (extensions == null) {
      extensions = findExtensions(scope);
      if (extensions != null) {
        objectCache.setObject(URLNormalizer.X_POINT_ID + "_x_" + scope, extensions);
      } else {
        // Put the empty extension list into cache
        // to remember we don't know any related extension.
        objectCache.setObject(URLNormalizer.X_POINT_ID + "_x_" + scope, EMPTY_EXTENSION_LIST);
        extensions = EMPTY_EXTENSION_LIST;
      }
    }
    return extensions;
  }
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  private Map<String, String> keyMap = new HashMap<String, String>();
  private Map<String, String> copyMap = new HashMap<String, String>();
  private String uniqueKey = "id";
 
  public static synchronized SolrMappingReader getInstance(Configuration conf) {
    ObjectCache cache = ObjectCache.get(conf);
    SolrMappingReader instance = (SolrMappingReader)cache.getObject(SolrMappingReader.class.getName());
    if (instance == null) {
      instance = new SolrMappingReader(conf);
      cache.setObject(SolrMappingReader.class.getName(), instance);
    }
    return instance;
  }
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Related Classes of org.apache.nutch.util.ObjectCache

  • org.apache.nutch.analysis.AnalyzerFactory
  • org.apache.nutch.analysis.CommonGrams
  • org.apache.nutch.collection.CollectionManager
  • org.apache.nutch.crawl.FetchScheduleFactory
  • org.apache.nutch.crawl.SignatureFactory
  • org.apache.nutch.indexer.field.FieldFilters
  • org.apache.nutch.indexer.IndexingFilters
  • org.apache.nutch.indexer.IndexWriters
  • org.apache.nutch.indexer.solr.SolrMappingReader
  • org.apache.nutch.indexwriter.solr.SolrMappingReader
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