Examples of TableWriter

liquibase.dbdoc.TableWriter
org.geotools.io.TableWriter
A character stream that can be used to format tables. Columns are separated by tabulations ('\t') and rows are separated by line terminators ('\r', '\n' or "\r\n"). Every table's cells are stored in memory until {@link #flush()} is invoked. When invoked,{@link #flush()} copy cell's contents to the underlying stream while replacingtabulations by some amount of spaces. The exact number of spaces is computed from cell's widths. {@code TableWriter} produces correct output whendisplayed with a monospace font.

For example, the following code...
```
 TableWriter out = new TableWriter(new OutputStreamWriter(System.out), 3); out.write("Prénom\tNom\n"); out.nextLine('-'); out.write("Idéphonse\tLaporte\nSarah\tCoursi\nYvan\tDubois"); out.flush(); 
```
...produces the following output:
```
 Prénom      Nom ---------   ------- Idéphonse   Laporte Sarah       Coursi Yvan        Dubois 
```
@since 2.0 @source $URL$ @version $Id$ @author Martin Desruisseaux (IRD)
org.grouplens.lenskit.util.table.writer.TableWriter
uplens.org">GroupLens Research

Examples of org.geotools.io.TableWriter

        Collections.sort(categories, this);
        /*
         * Prints the table header.
         */
        final Vocabulary resources = Vocabulary.getResources(locale);
        final TableWriter table  = new TableWriter(out, TableWriter.SINGLE_VERTICAL_LINE);
        table.setMultiLinesCells(true);
        table.writeHorizontalSeparator();
        table.write(resources.getString(VocabularyKeys.FACTORY));
        table.nextColumn();
        table.write(resources.getString(VocabularyKeys.AUTHORITY));
        table.nextColumn();
        table.write(resources.getString(VocabularyKeys.VENDOR));
        table.nextColumn();
        table.write(resources.getString(VocabularyKeys.IMPLEMENTATIONS));
        table.nextLine();
        table.nextLine(TableWriter.DOUBLE_HORIZONTAL_LINE);
        final StringBuilder vendors         = new StringBuilder();
        final StringBuilder implementations = new StringBuilder();
        for (final Iterator<Class<?>> it=categories.iterator(); it.hasNext();) {
            /*
             * Writes the category name (CRSFactory, DatumFactory, etc.)
             */
            final Class<?> category = it.next();
            table.write(Classes.getShortName(category));
            table.nextColumn();
            /*
             * Writes the authorities in a single cell. Same for vendors and implementations.
             */
            final Iterator<?> providers = registry.getServiceProviders(category, null, null);
            while (providers.hasNext()) {
                if (implementations.length() != 0) {
                    table          .write ('\n');
                    vendors        .append('\n');
                    implementations.append('\n');
                }
                final Factory provider = (Factory) providers.next();
                final Citation vendor = provider.getVendor();
                vendors.append(vendor.getTitle().toString(locale));
                implementations.append(Classes.getShortClassName(provider));
                if (provider instanceof AuthorityFactory) {
                    final Citation authority = ((AuthorityFactory) provider).getAuthority();
                    final Iterator<? extends Identifier> identifiers =
                            authority.getIdentifiers().iterator();
                    final String identifier = identifiers.hasNext()
                            ? identifiers.next().getCode().toString()
                            : authority.getTitle().toString(locale);
                    table.write(identifier);
                }
            }
            /*
             * Writes the vendors.
             */
            table.nextColumn();
            table.write(vendors.toString());
            vendors.setLength(0);
            /*
             * Writes the implementation class name.
             */
            table.nextColumn();
            table.write(implementations.toString());
            implementations.setLength(0);
            table.writeHorizontalSeparator();
        }
        table.flush();
    }

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Examples of org.geotools.io.TableWriter

         * scope (or authority) declared in 'titles', in the same order. It will
         * also contains a "Description" column if there is some.
         */
        int column = 0;
        synchronized (lock) {
            final TableWriter table = new TableWriter(out, TableWriter.SINGLE_VERTICAL_LINE);
            table.setMultiLinesCells(true);
            table.writeHorizontalSeparator();
            /*
             * Writes all column headers.
             */
            for (final Object element : titles.keySet()) {
                if (hide[column++]) {
                    continue;
                }
                final String title;
                if (element == null) {
                    title = "Identifier"; // TODO: localize
                } else if (element instanceof String) {
                    title = (String) element;
                } else {
                    title = "Alias " + element; // TODO: localize
                }
                table.write(title);
                table.nextColumn();
            }
            if (descriptions != null) {
                table.write("Description"); // TODO: localize
            }
            table.writeHorizontalSeparator();
            /*
             * Writes all row.
             */
            int counter = 0;
            for (final String[] aliases : names) {
                for (column=0; column<hide.length; column++) {
                    if (hide[column]) {
                        continue;
                    }
                    if (column < aliases.length) {
                        final String alias = aliases[column];
                        if (alias != null) {
                            table.write(alias);
                        }
                    }
                    table.nextColumn();
                }
                if (descriptions != null) {
                    final String remarks = descriptions[counter++];
                    if (remarks != null) {
                        table.write(remarks);
                    }
                }
                table.nextLine();
            }
            table.writeHorizontalSeparator();
            table.flush();
        }
    }

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Examples of org.grouplens.lenskit.util.table.writer.TableWriter


    @Nullable
    @Override
    public Void createContext(Attributed algorithm, TTDataSet dataSet, Recommender recommender) {
        Preconditions.checkState(evalLayout != null, "evaluation not in progress");
        TableWriter w = evalLayout.prefixTable(writer, algorithm, dataSet);
        for (List<Object> row: function.apply(recommender)) {
            try {
                w.writeRow(row.toArray());
            } catch (IOException e) {
                throw new RuntimeException("error writing row", e);
            }
        }
        return null;

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Examples of org.grouplens.lenskit.util.table.writer.TableWriter

    /**
     * Prepare the evaluation by opening all outputs and initializing metrics.
     */
    ExperimentOutputs openExperimentOutputs(ExperimentOutputLayout layouts, MeasurementSuite measures, TableWriter results, Closer closer) throws IOException {
        TableLayout resultLayout = layouts.getResultsLayout();
        TableWriter allResults = results;
        if (outputFile != null) {
            TableWriter disk = closer.register(CSVWriter.open(outputFile, resultLayout));
            allResults = new MultiplexedTableWriter(resultLayout, allResults, disk);
        }
        TableWriter user = null;
        if (userOutputFile != null) {
            user = closer.register(CSVWriter.open(userOutputFile, layouts.getUserLayout()));
        }
        List<Metric<?>> metrics = Lists.newArrayList();
        for (MetricFactory<?> metric : measures.getMetricFactories()) {

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Examples of org.grouplens.lenskit.util.table.writer.TableWriter

    List<Metric<?>> getMetrics() {
        return metrics;
    }


    public ExperimentOutputs getPrefixed(Attributed algo, TTDataSet data) {
        TableWriter results = layouts.prefixTable(resultsWriter, algo, data);
        TableWriter user = layouts.prefixTable(userWriter, algo, data);
        return new ExperimentOutputs(layouts, results, user, metrics);
    }

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Examples of org.grouplens.lenskit.util.table.writer.TableWriter

    }


    private File makeCSV(EventDAO dao, File file, boolean writeRatings) throws IOException {
        // TODO Make this not re-copy data unnecessarily
        Object[] row = new Object[writeRatings ? 3 : 2];
        TableWriter table = CSVWriter.open(file, null);
        try {
            Cursor<Rating> ratings = dao.streamEvents(Rating.class);
            try {
                for (Rating r: ratings) {
                    Preference p = r.getPreference();
                    if (p != null) {
                        row[0] = r.getUserId();
                        row[1] = r.getItemId();
                        if (writeRatings) {
                            row[2] = p.getValue();
                        }
                        table.writeRow(row);
                    }
                }
            } finally {
                ratings.close();
            }
        } finally {
            table.close();
        }
        return file;
    }

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Examples of org.grouplens.lenskit.util.table.writer.TableWriter

        EventBus bus = task.getProject().getEventBus();
        bus.post(JobEvents.started(this));
        Closer closer = Closer.create();
        try {
            outputs = task.getOutputs().getPrefixed(algorithmInfo, dataSet);
            TableWriter userResults = outputs.getUserWriter();
            List<Object> outputRow = Lists.newArrayList();


            logger.info("Building {} on {}", algorithmInfo, dataSet);
            StopWatch buildTimer = new StopWatch();
            buildTimer.start();
            buildRecommender();
            buildTimer.stop();
            logger.info("Built {} in {}", algorithmInfo.getName(), buildTimer);


            logger.info("Measuring {} on {}", algorithmInfo.getName(), dataSet.getName());


            StopWatch testTimer = new StopWatch();
            testTimer.start();
            List<Object> userRow = Lists.newArrayList();


            List<MetricWithAccumulator<?>> accumulators = Lists.newArrayList();


            for (Metric<?> eval: outputs.getMetrics()) {
                accumulators.add(makeMetricAccumulator(eval));
            }


            LongSet testUsers = dataSet.getTestData().getUserDAO().getUserIds();
            final NumberFormat pctFormat = NumberFormat.getPercentInstance();
            pctFormat.setMaximumFractionDigits(2);
            pctFormat.setMinimumFractionDigits(2);
            final int nusers = testUsers.size();
            logger.info("Testing {} on {} ({} users)", algorithmInfo, dataSet, nusers);
            int ndone = 0;
            for (LongIterator iter = testUsers.iterator(); iter.hasNext();) {
                if (Thread.interrupted()) {
                    throw new InterruptedException("eval job interrupted");
                }
                long uid = iter.nextLong();
                userRow.add(uid);
                userRow.add(null); // placeholder for the per-user time
                assert userRow.size() == 2;


                Stopwatch userTimer = Stopwatch.createStarted();
                TestUser test = getUserResults(uid);


                userRow.add(test.getTrainHistory().size());
                userRow.add(test.getTestHistory().size());


                for (MetricWithAccumulator<?> accum : accumulators) {
                    List<Object> ures = accum.measureUser(test);
                    if (ures != null) {
                        userRow.addAll(ures);
                    }
                }
                userTimer.stop();
                userRow.set(1, userTimer.elapsed(TimeUnit.MILLISECONDS) * 0.001);
                if (userResults != null) {
                    try {
                        userResults.writeRow(userRow);
                    } catch (IOException e) {
                        throw new RuntimeException("error writing user row", e);
                    }
                }
                userRow.clear();

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Examples of org.grouplens.lenskit.util.table.writer.TableWriter

     * Clean up the job after it is finished (freeing memory, etc.).
     */
    protected abstract void cleanup();


    private void writeMetricValues(StopWatch build, StopWatch test, List<Object> measures, List<MetricWithAccumulator<?>> accums) throws IOException {
        TableWriter results = outputs.getResultsWriter();


        List<Object> row = Lists.newArrayList();
        row.add(build.getTime());
        row.add(test.getTime());
        row.addAll(measures);
        for (MetricWithAccumulator<?> acc : accums) {
            row.addAll(acc.getResults());
        }
        results.writeRow(row);
    }

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