Example usage for com.google.common.base Strings nullToEmpty

List of usage examples for com.google.common.base Strings nullToEmpty

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Introduction

In this page you can find the example usage for com.google.common.base Strings nullToEmpty.

Prototype

public static String nullToEmpty(@Nullable String string)

Source Link

Document

Returns the given string if it is non-null; the empty string otherwise.

Usage

From source file:org.gaul.s3proxy.AwsSignature.java

/**
 * Create Amazon V2 signature.  Reference:
 * http://docs.aws.amazon.com/general/latest/gr/signature-version-2.html
 *//*ww w. j  a va 2 s  .  c  om*/
static String createAuthorizationSignature(HttpServletRequest request, String uri, String credential) {
    // sort Amazon headers
    SortedSetMultimap<String, String> canonicalizedHeaders = TreeMultimap.create();
    for (String headerName : Collections.list(request.getHeaderNames())) {
        Collection<String> headerValues = Collections.list(request.getHeaders(headerName));
        headerName = headerName.toLowerCase();
        if (!headerName.startsWith("x-amz-")) {
            continue;
        }
        if (headerValues.isEmpty()) {
            canonicalizedHeaders.put(headerName, "");
        }
        for (String headerValue : headerValues) {
            canonicalizedHeaders.put(headerName, Strings.nullToEmpty(headerValue));
        }
    }

    // build string to sign
    StringBuilder builder = new StringBuilder().append(request.getMethod()).append('\n')
            .append(Strings.nullToEmpty(request.getHeader(HttpHeaders.CONTENT_MD5))).append('\n')
            .append(Strings.nullToEmpty(request.getHeader(HttpHeaders.CONTENT_TYPE))).append('\n');
    String expires = request.getParameter("Expires");
    if (expires != null) {
        builder.append(expires);
    } else if (!canonicalizedHeaders.containsKey("x-amz-date")) {
        builder.append(request.getHeader(HttpHeaders.DATE));
    }
    builder.append('\n');
    for (Map.Entry<String, String> entry : canonicalizedHeaders.entries()) {
        builder.append(entry.getKey()).append(':').append(entry.getValue()).append('\n');
    }
    builder.append(uri);

    char separator = '?';
    List<String> subresources = Collections.list(request.getParameterNames());
    Collections.sort(subresources);
    for (String subresource : subresources) {
        if (SIGNED_SUBRESOURCES.contains(subresource)) {
            builder.append(separator).append(subresource);

            String value = request.getParameter(subresource);
            if (!"".equals(value)) {
                builder.append('=').append(value);
            }
            separator = '&';
        }
    }

    String stringToSign = builder.toString();
    logger.trace("stringToSign: {}", stringToSign);

    // sign string
    Mac mac;
    try {
        mac = Mac.getInstance("HmacSHA1");
        mac.init(new SecretKeySpec(credential.getBytes(StandardCharsets.UTF_8), "HmacSHA1"));
    } catch (InvalidKeyException | NoSuchAlgorithmException e) {
        throw new RuntimeException(e);
    }
    return BaseEncoding.base64().encode(mac.doFinal(stringToSign.getBytes(StandardCharsets.UTF_8)));
}

From source file:io.macgyver.core.cli.LoginCommand.java

public Optional<String> readUsername() {
    String username = getConfig().path("username").asText();
    if (Strings.isNullOrEmpty(username)) {
        username = System.getProperty("user.name", "");
    }//from   w w w . j a v  a 2 s  .com
    String usernameFromConsole = Strings.nullToEmpty(System.console().readLine("username [%s]: ", username))
            .trim();

    if (!Strings.isNullOrEmpty(usernameFromConsole)) {
        username = usernameFromConsole;
    }
    logger.info("username: " + username);
    return Optional.ofNullable(username);
}

From source file:com.google.gerrit.server.change.PutTopic.java

@Override
public Object apply(ChangeResource req, Input input)
        throws BadRequestException, AuthException, ResourceConflictException, Exception {
    if (input == null) {
        input = new Input();
    }/*from   w ww  .  j  a  va2  s . c om*/

    ChangeControl control = req.getControl();
    Change change = req.getChange();
    if (!control.canEditTopicName()) {
        throw new AuthException("changing topic not permitted");
    }

    ReviewDb db = dbProvider.get();
    final String newTopicName = Strings.nullToEmpty(input.topic);
    String oldTopicName = Strings.nullToEmpty(change.getTopic());
    if (!oldTopicName.equals(newTopicName)) {
        String summary;
        if (oldTopicName.isEmpty()) {
            summary = "Topic set to \"" + newTopicName + "\".";
        } else if (newTopicName.isEmpty()) {
            summary = "Topic \"" + oldTopicName + "\" removed.";
        } else {
            summary = String.format("Topic updated from \"%s\" to \"%s\".", oldTopicName, newTopicName);
        }

        ChangeMessage cmsg = new ChangeMessage(
                new ChangeMessage.Key(change.getId(), ChangeUtil.messageUUID(db)),
                ((IdentifiedUser) control.getCurrentUser()).getAccountId(), change.currentPatchSetId());
        StringBuilder msgBuf = new StringBuilder(summary);
        if (!Strings.isNullOrEmpty(input.message)) {
            msgBuf.append("\n\n");
            msgBuf.append(input.message);
        }
        cmsg.setMessage(msgBuf.toString());

        db.changes().atomicUpdate(change.getId(), new AtomicUpdate<Change>() {
            @Override
            public Change update(Change change) {
                change.setTopic(Strings.emptyToNull(newTopicName));
                return change;
            }
        });
        db.changeMessages().insert(Collections.singleton(cmsg));
    }
    return Strings.isNullOrEmpty(newTopicName) ? Response.none() : newTopicName;
}

From source file:com.google.gerrit.server.change.CherryPickCommit.java

@Override
public ChangeInfo apply(CommitResource rsrc, CherryPickInput input)
        throws OrmException, IOException, UpdateException, RestApiException {
    String message = Strings.nullToEmpty(input.message).trim();
    String destination = Strings.nullToEmpty(input.destination).trim();
    int parent = input.parent == null ? 1 : input.parent;

    if (destination.isEmpty()) {
        throw new BadRequestException("destination must be non-empty");
    }//from   ww  w .j  av a  2s . c  o m

    ProjectControl projectControl = rsrc.getProject();
    Capable capable = projectControl.canPushToAtLeastOneRef();
    if (capable != Capable.OK) {
        throw new AuthException(capable.getMessage());
    }

    RevCommit commit = rsrc.getCommit();
    String refName = RefNames.fullName(destination);
    RefControl refControl = projectControl.controlForRef(refName);
    if (!refControl.canUpload()) {
        throw new AuthException("Not allowed to cherry pick " + commit + " to " + destination);
    }

    Project.NameKey project = projectControl.getProject().getNameKey();
    try {
        Change.Id cherryPickedChangeId = cherryPickChange.cherryPick(null, null, null, null, project, commit,
                message.isEmpty() ? commit.getFullMessage() : message, refName, refControl, parent);
        return json.noOptions().format(project, cherryPickedChangeId);
    } catch (InvalidChangeOperationException e) {
        throw new BadRequestException(e.getMessage());
    } catch (IntegrationException e) {
        throw new ResourceConflictException(e.getMessage());
    }
}

From source file:com.b2international.snowowl.server.console.RemoteJobsCommandProvider.java

public void _remotejobs(final CommandInterpreter interpreter) {

    try {/*from  w w  w  .j a v a 2  s.  c  o m*/

        final String cmd = Strings.nullToEmpty(interpreter.nextArgument()).toLowerCase();

        switch (cmd) {
        case "list":
            listJobs(interpreter);
            break;
        case "cancel":
            cancelJob(interpreter);
            break;
        default:
            interpreter.println(getHelp());
            break;
        }

    } catch (final Exception ex) {
        interpreter.println(ex.getMessage());
    }
}

From source file:org.cogroo.util.TextUtils.java

/**
 * @return the <code>String</code> to be printed
 *//*from w  w w . j  av a  2s. com*/
public static String nicePrint(Document document) {
    boolean printAdditionalContext = false;
    StringBuilder output = new StringBuilder();

    output.append("Document text: ").append(document.getText()).append("\n\n");

    if (document.getSentences() != null) {
        int cont = 0;
        for (Sentence sentence : document.getSentences()) {
            cont++;
            output.append("{Sentence ").append(cont).append(": ").append(sentence.getText()).append("\n");

            List<Token> tokens = sentence.getTokens();

            String format;

            Joiner joiner = Joiner.on(", ");

            if (tokens != null) {
                String[] lexemes = new String[tokens.size()];
                String[] posTags = new String[tokens.size()];
                String[] features = new String[tokens.size()];
                String[] lemmas = new String[tokens.size()];
                String[] chunks = new String[tokens.size()];
                String[] schunks = new String[tokens.size()];

                output.append("   (token, class tag, feature tag, lexeme, chunks, function)\n");
                for (int i = 0; i < tokens.size(); i++) {
                    Token t = tokens.get(i);

                    lexemes[i] = Strings.nullToEmpty(t.getLexeme());
                    posTags[i] = Strings.nullToEmpty(t.getPOSTag());
                    features[i] = Strings.nullToEmpty(t.getFeatures());

                    if (t.getLemmas() != null)
                        lemmas[i] = joiner.join(t.getLemmas());
                    else
                        lemmas[i] = "";

                    String head = "";
                    if (t.isChunkHead()) {
                        head = "*";
                    }
                    chunks[i] = t.getChunkTag() + head;

                    schunks[i] = t.getSyntacticTag();
                }

                format = "   | %-" + maxSize(lexemes) + "s | %-" + maxSize(posTags) + "s | %-"
                        + maxSize(features) + "s | %-" + maxSize(lemmas) + "s | %-" + maxSize(chunks) + "s | %-"
                        + maxSize(schunks) + "s |\n";

                for (int i = 0; i < tokens.size(); i++) {

                    output.append(String.format(format, lexemes[i], posTags[i], features[i], lemmas[i],
                            chunks[i], schunks[i]));

                }
                output.append("\n");

                if (printAdditionalContext) {
                    String[][] addcontext = TextUtils.additionalContext(tokens,
                            Arrays.asList(Analyzers.CONTRACTION_FINDER, Analyzers.NAME_FINDER));
                    for (String[] line : addcontext) {
                        for (String col : line) {
                            output.append("[");
                            if (col == null) {
                                output.append("-");
                            } else {
                                output.append(col);
                            }
                            output.append("]");
                        }
                        output.append("\n");
                    }
                }

            }

            output.append("   Syntax tree: \n   ");
            output.append(sentence.asTree().toSyntaxTree());

            output.append("\n}\n");
        }
    }
    return output.toString();
}

From source file:com.facebook.buck.plugin.intellij.ui.TargetsTreeRenderer.java

@Override
protected void initComponent(JTree tree, Object value, boolean selected, boolean expanded, boolean leaf,
        int row, boolean hasFocus) {
    if (value instanceof TargetNode) {
        TargetNode node = (TargetNode) value;
        String[] text = new String[] { node.getName() };
        Icon icon;/*from  w ww  .  j a v  a 2 s  . com*/
        switch (node.getType()) {
        case DIRECTORY:
            icon = AllIcons.Hierarchy.Base;
            break;
        case JAVA_LIBRARY:
            icon = AllIcons.Modules.Library;
            break;
        case JAVA_BINARY:
            icon = AllIcons.RunConfigurations.Application;
            break;
        case JAVA_TEST:
            icon = AllIcons.RunConfigurations.Junit;
            break;
        case OTHER:
            icon = AllIcons.General.ExternalTools;
            break;
        default:
            icon = AllIcons.General.Error;
        }
        setText(text, "");
        setIcon(icon);
    } else {
        String[] text = new String[] { value == null ? "" : value.toString() };
        text[0] = Strings.nullToEmpty(text[0]);
        setText(text, null);
        setIcon(null);
    }
}

From source file:org.activityinfo.ui.client.component.formdesigner.container.SectionWidgetContainer.java

public void syncWithModel() {
    widgetContainer.getLabel().setHTML("<h3>"
            + SafeHtmlUtils.fromString(Strings.nullToEmpty(formSection.getLabel())).asString() + "</h3>");
}

From source file:br.edu.utfpr.cm.JGitMinerWeb.services.metric.social.NumberOfMentionsMetric.java

private Integer calculateNumberOfMentions(EntityIssue issue) throws Exception {
    Integer numberOfMentions = 0;

    numberOfMentions += MentionsValidator.mentionInString(Strings.nullToEmpty(issue.getBody()));

    for (EntityComment entityComment : issue.getComments()) {

        numberOfMentions += MentionsValidator.mentionInString(Strings.nullToEmpty(entityComment.getBody()));

    }/*from   www.ja  va2s  .  co  m*/

    return numberOfMentions;
}

From source file:uk.org.ngo.squeezer.model.Album.java

public Album(Map<String, String> record) {
    setId(record.containsKey("album_id") ? record.get("album_id") : record.get("id"));
    setName(record.get("album"));
    setArtist(record.get("artist"));
    setYear(Util.parseDecimalIntOrZero(record.get("year")));
    setArtwork_track_id(record.get("artwork_track_id"));
    mArtworkUrl = Uri.parse(Strings.nullToEmpty(record.get("artwork_url")));
}