Package org.apache.nutch.parse

Examples of org.apache.nutch.parse.ParseStatus$EmptyParseImpl

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      final ByteArrayInputStream bainput = new ByteArrayInputStream(
          contentInBytes);
      final InputStream input = bainput;

      if (contentLen != null && contentInBytes.length != len) {
        return new ParseStatus(ParseStatus.FAILED,
            ParseStatus.FAILED_TRUNCATED, "Content truncated at "
                + contentInBytes.length
                + " bytes. Parser can't handle incomplete pdf file.")
            .getEmptyParse(getConf());
      }

      ZipTextExtractor extractor = new ZipTextExtractor(getConf());

      // extract text
      resultText = extractor.extractText(new ByteArrayInputStream(
          contentInBytes), content.getUrl(), outLinksList);

    } catch (Exception e) {
      return new ParseStatus(ParseStatus.FAILED,
          "Can't be handled as Zip document. " + e).getEmptyParse(getConf());
    }

    if (resultText == null) {
      resultText = "";
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    String class2 = "org.apache.nutch.indexer.basic.BasicIndexingFilter";
    conf.set(IndexingFilters.INDEXINGFILTER_ORDER, class1 + " " + class2);

    IndexingFilters filters = new IndexingFilters(conf);
    filters.filter(new Document(), new ParseImpl("text", new ParseData(
        new ParseStatus(), "title", new Outlink[0], new Metadata())), new Text(
        "http://www.example.com/"), new CrawlDatum(), new Inlinks());
  }
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        } catch (Exception e) { // run time exception
            if (LOG.isWarnEnabled()) {
              e.printStackTrace(LogUtil.getWarnStream(LOG));
              LOG.warn("nutch:parse-rss:RSSParser Exception: " + e.getMessage());
            }
            return new ParseStatus(ParseStatus.FAILED,
                    "Can't be handled as rss document. " + e).getEmptyParse(getConf());
        }

        StringBuffer contentTitle = new StringBuffer(), indexText = new StringBuffer();
        List theOutlinks = new Vector();
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    String contentType = content.getContentType();

    String[] params = (String[]) TYPE_PARAMS_MAP.get(contentType);
    if (params == null)
      return new ParseStatus(ParseStatus.FAILED,
                      "No external command defined for contentType: " + contentType).getEmptyParse(getConf());

    String command = params[0];
    int timeout = Integer.parseInt(params[1]);

    if (LOG.isTraceEnabled()) {
      LOG.trace("Use "+command+ " with timeout="+timeout+"secs");
    }

    String text = null;
    String title = null;

    try {

      byte[] raw = content.getContent();

      String contentLength = content.getMetadata().get(Response.CONTENT_LENGTH);
      if (contentLength != null
            && raw.length != Integer.parseInt(contentLength)) {
          return new ParseStatus(ParseStatus.FAILED, ParseStatus.FAILED_TRUNCATED,
                "Content truncated at " + raw.length
            +" bytes. Parser can't handle incomplete "
            + contentType + " file.").getEmptyParse(getConf());
      }

      ByteArrayOutputStream os = new ByteArrayOutputStream(BUFFER_SIZE);
      ByteArrayOutputStream es = new ByteArrayOutputStream(BUFFER_SIZE/4);

      CommandRunner cr = new CommandRunner();

      cr.setCommand(command+ " " +contentType);
      cr.setInputStream(new ByteArrayInputStream(raw));
      cr.setStdOutputStream(os);
      cr.setStdErrorStream(es);

      cr.setTimeout(timeout);

      cr.evaluate();

      if (cr.getExitValue() != 0)
        return new ParseStatus(ParseStatus.FAILED,
                        "External command " + command
                        + " failed with error: " + es.toString()).getEmptyParse(getConf());

      text = os.toString();

    } catch (Exception e) { // run time exception
      return new ParseStatus(e).getEmptyParse(getConf());
    }

    if (text == null)
      text = "";
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    rtfParser.setDelegate(delegate);

    try {
      rtfParser.parse();
    } catch (ParseException e) {
        return new ParseStatus(ParseStatus.FAILED,
                               ParseStatus.FAILED_EXCEPTION,
                               e.toString()).getEmptyParse(conf);
    }

    Metadata metadata = new Metadata();
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    if (outlinks.size() > 0) {
      Outlink[] old = parse.getData().getOutlinks();
      String title = parse.getData().getTitle();
      List list = Arrays.asList(old);
      outlinks.addAll(list);
      ParseStatus status = parse.getData().getStatus();
      String text = parse.getText();
      Outlink[] newlinks = (Outlink[])outlinks.toArray(new Outlink[outlinks.size()]);
      ParseData parseData = new ParseData(status, title, newlinks,
                                          parse.getData().getContentMeta(),
                                          parse.getData().getParseMeta());
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  }
 
  public Parse getParse(Content c) {
    String type = c.getContentType();
    if (type != null && !type.trim().equals("") && !type.toLowerCase().startsWith("application/x-javascript"))
      return new ParseStatus(ParseStatus.FAILED_INVALID_FORMAT,
              "Content not JavaScript: '" + type + "'").getEmptyParse(getConf());
    String script = new String(c.getContent());
    Outlink[] outlinks = getJSLinks(script, "", c.getUrl());
    if (outlinks == null) outlinks = new Outlink[0];
    // Title? use the first line of the script...
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      byte[] raw = content.getContent();

      String contentLength = content.getMetadata().get(Response.CONTENT_LENGTH);
      if (contentLength != null
            && raw.length != Integer.parseInt(contentLength)) {
          return new ParseStatus(ParseStatus.FAILED, ParseStatus.FAILED_TRUNCATED,
                  "Content truncated at "+raw.length
            +" bytes. Parser can't handle incomplete pdf file.").getEmptyParse(getConf());
      }

      PDFParser parser = new PDFParser(new ByteArrayInputStream(raw));
      parser.parse();

      pdf = parser.getPDDocument();

      if (pdf.isEncrypted()) {
        DocumentEncryption decryptor = new DocumentEncryption(pdf);
        //Just try using the default password and move on
        decryptor.decryptDocument("");
      }

      // collect text
      PDFTextStripper stripper = new PDFTextStripper();
      text = stripper.getText(pdf);

      // collect title
      PDDocumentInformation info = pdf.getDocumentInformation();
      title = info.getTitle();
      // more useful info, currently not used. please keep them for future use.
      metadata.add(Metadata.PAGE_COUNT, String.valueOf(pdf.getPageCount()));
      metadata.add(Metadata.AUTHOR, info.getAuthor());
      metadata.add(Metadata.SUBJECT, info.getSubject());
      metadata.add(Metadata.KEYWORDS, info.getKeywords());
      metadata.add(Metadata.CREATOR, info.getCreator());
      metadata.add(Metadata.PUBLISHER, info.getProducer());
     
      //TODO: Figure out why we get a java.io.IOException: Error converting date:1-Jan-3 18:15PM
      //error here
     
      //metadata.put(DATE, dcDateFormatter.format(info.getCreationDate().getTime()));
      //metadata.put(LAST_MODIFIED, dcDateFormatter.format(info.getModificationDate().getTime()));

    } catch (CryptographyException e) {
      return new ParseStatus(ParseStatus.FAILED,
              "Error decrypting document. " + e).getEmptyParse(getConf());
    } catch (InvalidPasswordException e) {
      return new ParseStatus(ParseStatus.FAILED,
              "Can't decrypt document - invalid password. " + e).getEmptyParse(getConf());
    } catch (Exception e) { // run time exception
        if (LOG.isWarnEnabled()) {
          LOG.warn("General exception in PDF parser: "+e.getMessage());
          e.printStackTrace(LogUtil.getWarnStream(LOG));       
        }
      return new ParseStatus(ParseStatus.FAILED,
              "Can't be handled as pdf document. " + e).getEmptyParse(getConf());
    } finally {
      try {
        if (pdf != null)
          pdf.close();
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    Metadata metadata = new Metadata();
    metadata.add(Response.CONTENT_TYPE, source);
    MoreIndexingFilter filter = new MoreIndexingFilter();
    filter.setConf(conf);
    NutchDocument doc = filter.filter(new NutchDocument(), new ParseImpl("text", new ParseData(
        new ParseStatus(), "title", new Outlink[0], metadata)), new Text(
        "http://www.example.com/"), new CrawlDatum(), new Inlinks());
    assertEquals("mime type not detected", expected, doc.getFieldValue("type"));
  }
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        } catch (Exception e) { // run time exception
            if (LOG.isWarnEnabled()) {
              e.printStackTrace(LogUtil.getWarnStream(LOG));
              LOG.warn("nutch:parse-rss:RSSParser Exception: " + e.getMessage());
            }
            return new ParseStatus(ParseStatus.FAILED,
                    "Can't be handled as rss document. " + e).getEmptyParseResult(content.getUrl(), getConf());
        }

        StringBuffer contentTitle = new StringBuffer(), indexText = new StringBuffer();
        List theOutlinks = new Vector();
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Related Classes of org.apache.nutch.parse.ParseStatus$EmptyParseImpl

  • com.atlantbh.nutch.filter.xpath.XPathHtmlParserFilter
  • org.apache.nutch.indexer.more.TestMoreIndexingFilter
  • org.apache.nutch.indexer.TestIndexingFilters
  • org.apache.nutch.metadata.Metadata
  • org.apache.nutch.parse.ext.ExtParser
  • org.apache.nutch.parse.ext.WaxExtParser
  • org.apache.nutch.parse.feed.FeedParser
  • org.apache.nutch.parse.js.JSParseFilter
  • org.apache.nutch.parse.mp3.MP3Parser
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