Examples of com.google.common.base.Splitter

com.google.common.base.Splitter
Do not do this! Splitter splitter = Splitter.on('/'); splitter.trimResults(); // does nothing! return splitter.split("wrong / wrong / wrong");} The separator recognized by the splitter does not have to be a single literal character as in the examples above. See the methods {@link #on(String)}, {@link #on(Pattern)} and {@link #on(CharMatcher)} for examplesof other ways to specify separators.
Note: this class does not mimic any of the quirky behaviors of similar JDK methods; for instance, it does not silently discard trailing separators, as does {@link String#split(String)}, nor does it have a default behavior of using five particular whitespace characters as separators, like {@link java.util.StringTokenizer}. @author Julien Silland @author Jesse Wilson @author Kevin Bourrillion @author Louis Wasserman @since Guava release 01

   * @param resourceName Where to get the data.
   * @return A matrix of the results.
   * @throws IOException If there is an error reading the data
   */
  static Matrix readCsv(String resourceName) throws IOException {
    Splitter onCommas = Splitter.on(',').trimResults(CharMatcher.anyOf(" \""));


    Readable isr = new InputStreamReader(Resources.getResource(resourceName).openStream(), Charsets.UTF_8);
    List<String> data = CharStreams.readLines(isr);
    String first = data.get(0);
    data = data.subList(1, data.size());


    List<String> values = Lists.newArrayList(onCommas.split(first));
    Matrix r = new DenseMatrix(data.size(), values.size());


    int column = 0;
    Map<String, Integer> labels = Maps.newHashMap();
    for (String value : values) {
      labels.put(value, column);
      column++;
    }
    r.setColumnLabelBindings(labels);


    int row = 0;
    for (String line : data) {
      column = 0;
      values = Lists.newArrayList(onCommas.split(line));
      for (String value : values) {
        r.set(row, column, Double.parseDouble(value));
        column++;
      }
      row++;

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    //
    // This test uses a deterministic split that is neither outstandingly good nor bad




    RandomUtils.useTestSeed();
    Splitter onComma = Splitter.on(",");


    // read the data
    List<String> raw = Resources.readLines(Resources.getResource("iris.csv"), Charsets.UTF_8);


    // holds features
    List<Vector> data = Lists.newArrayList();


    // holds target variable
    List<Integer> target = Lists.newArrayList();


    // for decoding target values
    Dictionary dict = new Dictionary();


    // for permuting data later
    List<Integer> order = Lists.newArrayList();


    for (String line : raw.subList(1, raw.size())) {
      // order gets a list of indexes
      order.add(order.size());


      // parse the predictor variables
      Vector v = new DenseVector(5);
      v.set(0, 1);
      int i = 1;
      Iterable<String> values = onComma.split(line);
      for (String value : Iterables.limit(values, 4)) {
        v.set(i++, Double.parseDouble(value));
      }
      data.add(v);

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    }
  }


  @Test
  public void incompleteBeta() throws IOException {
    Splitter onComma = Splitter.on(",").trimResults();


    InputSupplier<InputStreamReader> input =
        Resources.newReaderSupplier(Resources.getResource("beta-test-data.csv"), Charsets.UTF_8);
    boolean header = true;
    for (String line : CharStreams.readLines(input)) {
      if (header) {
        // skip
        header = false;
      } else {
        Iterable<String> values = onComma.split(line);
        double alpha = Double.parseDouble(Iterables.get(values, 0));
        double beta = Double.parseDouble(Iterables.get(values, 1));
        double x = Double.parseDouble(Iterables.get(values, 2));
        double ref = Double.parseDouble(Iterables.get(values, 3));
        double actual = Gamma.incompleteBeta(alpha, beta, x);

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        if (getName().getLocalName().equals(NodeOperationType.NODE_LOCAL_NAME)) {
            return;
        }


        // everything else should be merged, duplicates should be eliminated.
        Splitter splitter = Splitter.on(',');
        ImmutableSet.Builder<String> targetValues = ImmutableSet.builder();
        targetValues.addAll(splitter.split(higherPriority.getValue()));
        targetValues.addAll(splitter.split(getValue()));
        higherPriority.getXml().setValue(Joiner.on(',').join(targetValues.build()));
    }

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        close();
    }


    private Message.Request parseLine(String line)
    {
        Splitter splitter = Splitter.on(' ').trimResults().omitEmptyStrings();
        Iterator<String> iter = splitter.split(line).iterator();
        if (!iter.hasNext())
            return null;
        String msgType = iter.next().toUpperCase();
        if (msgType.equals("STARTUP"))
        {

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        boolean ignoreAndDeleteEmptyFields = cmd.hasOption(ignoreAndDeleteEmptyFieldsOption.getLongOpt());
        long maxErrors = OptionUtil.getLongOption(cmd, maxErrorsOption, 1L);


        if (cmd.hasOption(rolesOption.getLongOpt())) {
            Set<String> roles = new HashSet<String>();
            Splitter splitter = Splitter.on(",").trimResults().omitEmptyStrings();
            for (String role : splitter.split(cmd.getOptionValue(rolesOption.getLongOpt()))) {
                roles.add(role);
            }
            AuthorizationContextHolder.setCurrentContext(new AuthorizationContext("lily-import", repositoryName, roles));
        }

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        String repositoryName = OptionUtil.getStringOption(cmd, repositoryOption, RepoAndTableUtil.DEFAULT_REPOSITORY);
        String tableName = OptionUtil.getStringOption(cmd, tableOption, Table.RECORD.name);


        if (cmd.hasOption(rolesOption.getLongOpt())) {
            Set<String> roles = new HashSet<String>();
            Splitter splitter = Splitter.on(",").trimResults().omitEmptyStrings();
            for (String role : splitter.split(cmd.getOptionValue(rolesOption.getLongOpt()))) {
                roles.add(role);
            }
            AuthorizationContextHolder.setCurrentContext(new AuthorizationContext("lily-scan-records", repositoryName, roles));
        }

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  }




  @Nonnull
  private static List<? extends String> splitPath( @Nonnull String fileName ) {
    Splitter splitter = Splitter.on( File.separator ).omitEmptyStrings();
    return Lists.newArrayList( splitter.split( fileName ) );
  }

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    return Lists.newArrayList( splitter.split( fileName ) );
  }


  @Nonnull
  private static List<? extends String> splitProjectId( @Nonnull String projectId ) {
    Splitter splitter = Splitter.on( new PackageSeparatorCharMatcher() ).omitEmptyStrings();
    return Lists.newArrayList( splitter.split( projectId ) );
  }

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    }


    @Inject(value = "struts.freeroute.controllerSuffixes", required = true)
    private void setControllerSuffixes(String controllerSuffixes) {


        Splitter splitter = Splitter.on(",").trimResults().omitEmptyStrings();
        this.controllerSuffixes = Sets.newHashSet(splitter.split(controllerSuffixes));
    }

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