Example usage for com.google.common.collect Lists partition

Introduction

In this page you can find the example usage for com.google.common.collect Lists partition.

Prototype

public static <T> List<List<T>> partition(List<T> list, int size) 

Source Link

Document

Returns consecutive List#subList(int,int) sublists of a list, each of the same size (the final list may be smaller).

Usage

From source file:org.sonar.css.checks.RuleDescriptionsGenerator.java

private String generateHtmlLessFunctionTable(List<StandardFunction> standardFunctions) {
    StringBuilder html = new StringBuilder("<table style=\"border: 0;\">\n");
    List<List<StandardFunction>> subLists = Lists.partition(standardFunctions, 3);
    for (List<StandardFunction> subList : subLists) {
        html.append("<tr>");
        for (StandardFunction standardCssFunction : subList) {
            List<String> links = standardCssFunction.getLinks().stream().filter(f -> f.contains("lesscss.org"))
                    .collect(Collectors.toList());
            html.append("<td style=\"border: 0; \">");
            if (!links.isEmpty()) {
                html.append("<a target=\"_blank\" href=\"").append(links.get(0)).append("\">");
            }//from   w w  w . jav  a2 s  .  c  o  m
            html.append("<code>").append(standardCssFunction.getName()).append("</code>");
            if (!links.isEmpty()) {
                html.append("</a>");
            }
            html.append("</code>");
            for (int i = 1; i < links.size(); i++) {
                html.append("&nbsp;&nbsp;<a target=\"_blank\" href=\"").append(links.get(i)).append("\">#")
                        .append(i + 1).append("</a>");
            }
            html.append("</td>\n");
        }
        html.append("</tr>");
    }
    html.append("</table>\n");
    return html.toString();
}

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From source file:org.openscada.ae.server.net.ServerConnectionHandler.java

public void dataChangedEvents(final String poolId, final List<Event> addedEvents) {
    for (final List<Event> chunk : Lists.partition(addedEvents, getChunkSize())) {
        final Message message = new Message(Messages.CC_EVENT_POOL_DATA);

        message.getValues().put(MESSAGE_QUERY_ID, new StringValue(poolId));
        message.getValues().put("events", EventMessageHelper.toValue(chunk));

        this.messenger.sendMessage(message);
    }// w w w  .  j a va 2 s  .  c o m
}

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From source file:com.palantir.atlasdb.keyvalue.cassandra.CassandraKeyValueService.java

private Map<Cell, Value> getRowsForSingleHost(final InetAddress host, final String tableName,
        final List<byte[]> rows, final long startTs) {
    try {//  ww  w.ja va2  s. c  o m
        int rowCount = 0;
        final Map<Cell, Value> result = Maps.newHashMap();
        int fetchBatchCount = configManager.getConfig().fetchBatchCount();
        for (final List<byte[]> batch : Lists.partition(rows, fetchBatchCount)) {
            rowCount += batch.size();
            result.putAll(clientPool.runWithPooledResourceOnHost(host,
                    new FunctionCheckedException<Client, Map<Cell, Value>, Exception>() {
                        @Override
                        public Map<Cell, Value> apply(Client client) throws Exception {
                            // We want to get all the columns in the row so set start and end to empty.
                            SliceRange slice = new SliceRange(ByteBuffer.wrap(PtBytes.EMPTY_BYTE_ARRAY),
                                    ByteBuffer.wrap(PtBytes.EMPTY_BYTE_ARRAY), false, Integer.MAX_VALUE);
                            SlicePredicate pred = new SlicePredicate();
                            pred.setSlice_range(slice);

                            List<ByteBuffer> rowNames = Lists.newArrayListWithCapacity(batch.size());
                            for (byte[] r : batch) {
                                rowNames.add(ByteBuffer.wrap(r));
                            }

                            ColumnParent colFam = new ColumnParent(internalTableName(tableName));
                            Map<ByteBuffer, List<ColumnOrSuperColumn>> results = multigetInternal(client,
                                    tableName, rowNames, colFam, pred, readConsistency);
                            Map<Cell, Value> ret = Maps.newHashMap();
                            new ValueExtractor(ret).extractResults(results, startTs, ColumnSelection.all());
                            return ret;
                        }

                        @Override
                        public String toString() {
                            return "multiget_slice(" + tableName + ", " + batch.size() + " rows" + ")";
                        }
                    }));
        }
        if (rowCount > fetchBatchCount) {
            log.warn("Rebatched in getRows a call to " + tableName + " that attempted to multiget " + rowCount
                    + " rows; this may indicate overly-large batching on a higher level.\n"
                    + CassandraKeyValueServices.getFilteredStackTrace("com.palantir"));
        }
        return ImmutableMap.copyOf(result);
    } catch (Exception e) {
        throw Throwables.throwUncheckedException(e);
    }
}

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From source file:org.wso2.carbon.analytics.datasource.rdbms.RDBMSAnalyticsRecordStore.java

@Override
public void delete(int tenantId, String tableName, List<String> ids)
        throws AnalyticsException, AnalyticsTableNotAvailableException {
    if (ids.size() == 0) {
        return;/*from  ww  w .  j  ava 2 s  . c o  m*/
    }
    Connection conn = null;
    List<List<String>> idsSubLists = Lists.partition(ids,
            this.rdbmsQueryConfigurationEntry.getRecordBatchSize());
    try {
        conn = this.getConnection();
        for (List<String> idSubList : idsSubLists) {
            this.delete(conn, tenantId, tableName, idSubList);
        }
    } catch (SQLException e) {
        throw new AnalyticsException("Error in deleting records: " + e.getMessage(), e);
    } finally {
        RDBMSUtils.cleanupConnection(null, null, conn);
    }
}

---

From source file:org.sonar.css.checks.RuleDescriptionsGenerator.java

private String generateHtmlTableFromListOfStrings(List<String> elements) {
    StringBuilder html = new StringBuilder("<table style=\"border: 0;\">\n");
    List<List<String>> subLists = Lists.partition(elements, 3);
    for (List<String> subList : subLists) {
        html.append("<tr>");
        for (String element : subList) {
            html.append("<td style=\"border: 0; \">");
            html.append("<code>").append(element).append("</code>");
            html.append("</td>\n");
        }//from  w w  w .j  a  v  a  2 s  . com
        html.append("</tr>");
    }
    html.append("</table>\n");
    return html.toString();
}

---

From source file:org.lttng.scope.tmf2.views.ui.timegraph.swtjfx.SwtJfxTimeGraphViewer.java

private static Node prepareTreeContents(TimeGraphTreeRender treeRender, double paneWidth) {
    /* Prepare the tree element objects */
    List<Label> treeElements = treeRender.getAllTreeElements().stream()
            // TODO Put as a real tree. TreeView ?
            .map(elem -> new Label(elem.getName())).peek(label -> {
                label.setPrefHeight(ENTRY_HEIGHT);
                label.setPadding(new Insets(0, LABEL_SIDE_MARGIN, 0, LABEL_SIDE_MARGIN));
                /*//from  w  w w .ja v a  2 s  .  c  om
                 * Re-set the solid background for the labels, so we do not
                 * see the background lines through.
                 */
                label.setStyle(BACKGROUND_STYLE);
            }).collect(Collectors.toList());

    VBox treeElemsBox = new VBox(); // Change to TreeView eventually ?
    treeElemsBox.getChildren().addAll(treeElements);

    /* Prepare the Canvases with the horizontal alignment lines */
    List<Canvas> canvases = new ArrayList<>();
    int maxEntriesPerCanvas = (int) (MAX_CANVAS_HEIGHT / ENTRY_HEIGHT);
    Lists.partition(treeElements, maxEntriesPerCanvas).forEach(subList -> {
        int nbElements = subList.size();
        double height = nbElements * ENTRY_HEIGHT;

        Canvas canvas = new Canvas(paneWidth, height);
        drawBackgroundLines(canvas, ENTRY_HEIGHT);
        canvas.setCache(true);
        canvases.add(canvas);
    });
    VBox canvasBox = new VBox();
    canvasBox.getChildren().addAll(canvases);

    /* Put the background Canvas and the Tree View into their containers */
    StackPane stackPane = new StackPane(canvasBox, treeElemsBox);
    stackPane.setStyle(BACKGROUND_STYLE);
    return stackPane;
}

---

From source file:com.netflix.metacat.usermetadata.mysql.MysqlUserMetadataService.java

@Override
public void saveMetadatas(final String user, final List<? extends HasMetadata> metadatas, final boolean merge) {
    try {/*from  w  w  w.  j ava2  s .co m*/
        final Connection conn = poolingDataSource.getConnection();
        try {
            @SuppressWarnings("unchecked")
            final List<List<HasMetadata>> subLists = Lists.partition((List<HasMetadata>) metadatas,
                    config.getUserMetadataMaxInClauseItems());
            for (List<HasMetadata> hasMetadatas : subLists) {
                final List<String> uris = Lists.newArrayList();
                final List<QualifiedName> names = Lists.newArrayList();
                // Get the names and uris
                final List<HasDefinitionMetadata> definitionMetadatas = Lists.newArrayList();
                final List<HasDataMetadata> dataMetadatas = Lists.newArrayList();
                hasMetadatas.stream().forEach(hasMetadata -> {
                    if (hasMetadata instanceof HasDefinitionMetadata) {
                        final HasDefinitionMetadata oDef = (HasDefinitionMetadata) hasMetadata;
                        names.add(oDef.getDefinitionName());
                        if (oDef.getDefinitionMetadata() != null) {
                            definitionMetadatas.add(oDef);
                        }
                    }
                    if (hasMetadata instanceof HasDataMetadata) {
                        final HasDataMetadata oData = (HasDataMetadata) hasMetadata;
                        if (oData.isDataExternal() && oData.getDataMetadata() != null
                                && oData.getDataMetadata().size() > 0) {
                            uris.add(oData.getDataUri());
                            dataMetadatas.add(oData);
                        }
                    }
                });
                if (!definitionMetadatas.isEmpty() || !dataMetadatas.isEmpty()) {
                    // Get the existing metadata based on the names and uris
                    final Map<String, ObjectNode> definitionMap = getDefinitionMetadataMap(names);
                    final Map<String, ObjectNode> dataMap = getDataMetadataMap(uris);
                    // Curate the list of existing and new metadatas
                    final List<Object[]> insertDefinitionMetadatas = Lists.newArrayList();
                    final List<Object[]> updateDefinitionMetadatas = Lists.newArrayList();
                    final List<Object[]> insertDataMetadatas = Lists.newArrayList();
                    final List<Object[]> updateDataMetadatas = Lists.newArrayList();
                    definitionMetadatas.stream().forEach(oDef -> {
                        final QualifiedName qualifiedName = oDef.getDefinitionName();
                        if (qualifiedName != null && oDef.getDefinitionMetadata() != null
                                && oDef.getDefinitionMetadata().size() != 0) {
                            final String name = qualifiedName.toString();
                            final ObjectNode oNode = definitionMap.get(name);
                            if (oNode == null) {
                                insertDefinitionMetadatas.add(
                                        new Object[] { metacatJson.toJsonString(oDef.getDefinitionMetadata()),
                                                user, user, name, });
                            } else {
                                metacatJson.mergeIntoPrimary(oNode, oDef.getDefinitionMetadata());
                                updateDefinitionMetadatas
                                        .add(new Object[] { metacatJson.toJsonString(oNode), user, name });
                            }
                        }
                    });
                    dataMetadatas.stream().forEach(oData -> {
                        final String uri = oData.getDataUri();
                        final ObjectNode oNode = dataMap.get(uri);
                        if (oData.getDataMetadata() != null && oData.getDataMetadata().size() != 0) {
                            if (oNode == null) {
                                insertDataMetadatas.add(new Object[] {
                                        metacatJson.toJsonString(oData.getDataMetadata()), user, user, uri, });
                            } else {
                                metacatJson.mergeIntoPrimary(oNode, oData.getDataMetadata());
                                updateDataMetadatas
                                        .add(new Object[] { metacatJson.toJsonString(oNode), user, uri });
                            }
                        }
                    });
                    //Now run the queries
                    final QueryRunner runner = new QueryRunner();
                    if (!insertDefinitionMetadatas.isEmpty()) {
                        runner.batch(conn, SQL.INSERT_DEFINITION_METADATA, insertDefinitionMetadatas
                                .toArray(new Object[insertDefinitionMetadatas.size()][4]));
                    }
                    if (!updateDefinitionMetadatas.isEmpty()) {
                        runner.batch(conn, SQL.UPDATE_DEFINITION_METADATA, updateDefinitionMetadatas
                                .toArray(new Object[updateDefinitionMetadatas.size()][3]));
                    }
                    if (!insertDataMetadatas.isEmpty()) {
                        runner.batch(conn, SQL.INSERT_DATA_METADATA,
                                insertDataMetadatas.toArray(new Object[insertDataMetadatas.size()][4]));
                    }
                    if (!updateDataMetadatas.isEmpty()) {
                        runner.batch(conn, SQL.UPDATE_DATA_METADATA,
                                updateDataMetadatas.toArray(new Object[updateDataMetadatas.size()][3]));
                    }
                }
            }
            conn.commit();
        } catch (SQLException e) {
            conn.rollback();
            throw e;
        } finally {
            conn.close();
        }
    } catch (SQLException e) {
        log.error("Sql exception", e);
        throw new UserMetadataServiceException("Failed to save metadata", e);
    }
}

---

From source file:org.sonar.css.checks.RuleDescriptionsGenerator.java

private String generateHtmlTable(List<StandardCssObject> standardCssObjects) {
    StringBuilder html = new StringBuilder("<table style=\"border: 0;\">\n");
    List<List<StandardCssObject>> subLists = Lists.partition(standardCssObjects, 3);
    for (List<StandardCssObject> subList : subLists) {
        html.append("<tr>");
        for (StandardCssObject standardCssObject : subList) {
            html.append("<td style=\"border: 0; \">");
            if (!standardCssObject.getLinks().isEmpty()) {
                html.append("<a target=\"_blank\" href=\"").append(standardCssObject.getLinks().get(0))
                        .append("\">");
            }/*from  w w  w .j av  a 2  s .  c o  m*/
            html.append("<code>").append(standardCssObject.getName()).append("</code>");
            if (!standardCssObject.getLinks().isEmpty()) {
                html.append("</a>");
            }
            html.append("</code>");
            for (int i = 1; i < standardCssObject.getLinks().size(); i++) {
                html.append("&nbsp;&nbsp;<a target=\"_blank\" href=\"")
                        .append(standardCssObject.getLinks().get(i)).append("\">#").append(i + 1)
                        .append("</a>");
            }
            html.append("</td>\n");
        }
        html.append("</tr>");
    }
    html.append("</table>\n");
    return html.toString();
}

---

From source file:org.apache.beam.sdk.util.GcsUtil.java

/**
 * Makes get {@link BatchRequest BatchRequests}.
 *
 * @param paths {@link GcsPath GcsPaths}.
 * @param results mutable {@link List} for return values.
 * @return {@link BatchRequest BatchRequests} to execute.
 * @throws IOException/*from  www .j a  v a 2 s  .c  o  m*/
 */
@VisibleForTesting
List<BatchRequest> makeGetBatches(Collection<GcsPath> paths, List<StorageObjectOrIOException[]> results)
        throws IOException {
    List<BatchRequest> batches = new LinkedList<>();
    for (List<GcsPath> filesToGet : Lists.partition(Lists.newArrayList(paths), MAX_REQUESTS_PER_BATCH)) {
        BatchRequest batch = createBatchRequest();
        for (GcsPath path : filesToGet) {
            results.add(enqueueGetFileSize(path, batch));
        }
        batches.add(batch);
    }
    return batches;
}

---

From source file:org.openscada.ae.server.net.ServerConnectionHandler.java

public void sendQueryData(final QueryImpl queryImpl, final List<Event> events) {
    // TODO: check if query is still active

    for (final List<Event> chunk : Lists.partition(events, getChunkSize())) {
        final Message message = new Message(Messages.CC_QUERY_DATA);
        message.getValues().put("data", EventMessageHelper.toValue(chunk));
        message.getValues().put(MESSAGE_QUERY_ID, new LongValue(queryImpl.getQueryId()));
        this.messenger.sendMessage(message);
    }/*from  w ww  .  java  2  s . c om*/
}

---

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