Package org.apache.mahout.common

Examples of org.apache.mahout.common.FileLineIterator.peek()

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        averageDiffs.clear();
        allRecommendableItemIDs.clear();
       
        FileLineIterator iterator = new FileLineIterator(dataFile, false);
        String firstLine = iterator.peek();
        while ((firstLine.length() == 0) || (firstLine.charAt(0) == COMMENT_CHAR)) {
          iterator.next();
          firstLine = iterator.peek();
        }
        char delimiter = FileDataModel.determineDelimiter(firstLine, 2);
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        FileLineIterator iterator = new FileLineIterator(dataFile, false);
        String firstLine = iterator.peek();
        while ((firstLine.length() == 0) || (firstLine.charAt(0) == COMMENT_CHAR)) {
          iterator.next();
          firstLine = iterator.peek();
        }
        char delimiter = FileDataModel.determineDelimiter(firstLine, 2);
        long averageCount = 0L;
        while (iterator.hasNext()) {
          averageCount = processLine(iterator.next(), delimiter, averageCount);
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    this.dataFile = dataFile.getAbsoluteFile();
    this.lastModified = dataFile.lastModified();
    this.lastUpdateFileModified = readLastUpdateFileModified();
   
    FileLineIterator iterator = new FileLineIterator(dataFile, false);
    String firstLine = iterator.peek();
    while ((firstLine.length() == 0) || (firstLine.charAt(0) == COMMENT_CHAR)) {
      iterator.next();
      firstLine = iterator.peek();
    }
    iterator.close();
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    FileLineIterator iterator = new FileLineIterator(dataFile, false);
    String firstLine = iterator.peek();
    while ((firstLine.length() == 0) || (firstLine.charAt(0) == COMMENT_CHAR)) {
      iterator.next();
      firstLine = iterator.peek();
    }
    iterator.close();
    delimiter = determineDelimiter(firstLine, 2);
    hasPrefValues = firstLine.indexOf(delimiter, firstLine.indexOf(delimiter) + 1) >= 0;
   
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        averageDiffs.clear();
        allRecommendableItemIDs.clear();
       
        FileLineIterator iterator = new FileLineIterator(dataFile, false);
        String firstLine = iterator.peek();
        while (firstLine.length() == 0 || firstLine.charAt(0) == COMMENT_CHAR) {
          iterator.next();
          firstLine = iterator.peek();
        }
        char delimiter = FileDataModel.determineDelimiter(firstLine);
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        FileLineIterator iterator = new FileLineIterator(dataFile, false);
        String firstLine = iterator.peek();
        while (firstLine.length() == 0 || firstLine.charAt(0) == COMMENT_CHAR) {
          iterator.next();
          firstLine = iterator.peek();
        }
        char delimiter = FileDataModel.determineDelimiter(firstLine);
        long averageCount = 0L;
        while (iterator.hasNext()) {
          averageCount = processLine(iterator.next(), delimiter, averageCount);
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    this.dataFile = dataFile.getAbsoluteFile();
    this.lastModified = dataFile.lastModified();
    this.lastUpdateFileModified = readLastUpdateFileModified();

    FileLineIterator iterator = new FileLineIterator(dataFile, false);
    String firstLine = iterator.peek();
    while ((firstLine.length() == 0) || (firstLine.charAt(0) == COMMENT_CHAR)) {
      iterator.next();
      firstLine = iterator.peek();
    }
    iterator.close();
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    FileLineIterator iterator = new FileLineIterator(dataFile, false);
    String firstLine = iterator.peek();
    while ((firstLine.length() == 0) || (firstLine.charAt(0) == COMMENT_CHAR)) {
      iterator.next();
      firstLine = iterator.peek();
    }
    iterator.close();

    delimiter = determineDelimiter(firstLine);
    delimiterPattern = Pattern.compile(String.valueOf(delimiter));
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    }
  }

  protected DataModel buildModel() throws IOException {
    FileLineIterator iterator = new FileLineIterator(dataFile, false);
    String firstLine = iterator.peek();
    while (firstLine.length() == 0 || firstLine.charAt(0) == COMMENT_CHAR) {
      iterator.next();
      firstLine = iterator.peek();
    }
    char delimiter = determineDelimiter(firstLine);
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  protected DataModel buildModel() throws IOException {
    FileLineIterator iterator = new FileLineIterator(dataFile, false);
    String firstLine = iterator.peek();
    while (firstLine.length() == 0 || firstLine.charAt(0) == COMMENT_CHAR) {
      iterator.next();
      firstLine = iterator.peek();
    }
    char delimiter = determineDelimiter(firstLine);
    boolean hasPrefValues = firstLine.indexOf(delimiter, firstLine.indexOf(delimiter) + 1) >= 0;

    if (hasPrefValues) {
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