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

Introduction

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

Prototype

public static boolean isNullOrEmpty(@Nullable String string)

Source Link

Document

Returns true if the given string is null or is the empty string.

Usage

From source file:com.github.jcustenborder.kafka.connect.cdc.ChangeAssertions.java

static void assertMap(Map<String, ?> expected, Map<String, ?> actual, String message) {
    if (null == expected && null == actual) {
        return;/*ww  w  .  j  a  va 2  s.  c om*/
    }

    String prefix = Strings.isNullOrEmpty(message) ? "" : message + ": ";
    assertNotNull(expected, prefix + "expected cannot be null");
    assertNotNull(actual, prefix + "actual cannot be null");
    MapDifference<String, ?> mapDifference = Maps.difference(expected, actual);
    assertTrue(mapDifference.areEqual(), new MapDifferenceSupplier(mapDifference, prefix));
}

From source file:qa.qcri.nadeef.web.rest.SourceAction.java

public static void setup(SQLDialect dialect) {
    Tracer tracer = Tracer.getTracer(SourceAction.class);

    get("/:project/data/source", (request, response) -> {
        JsonObject json = new JsonObject();
        JsonArray result = new JsonArray();
        String project = request.params("project");

        if (Strings.isNullOrEmpty(project))
            throw new IllegalArgumentException("Input is not valid.");

        DBConfig dbConfig = new DBConfig(NadeefConfiguration.getDbConfig());
        dbConfig.switchDatabase(project);

        try {/*from  ww  w . j av a 2  s  .c o m*/
            List<String> tables = DBMetaDataTool.getTables(dbConfig);
            for (String tableName : tables)
                if (!tableName.equalsIgnoreCase("AUDIT") && !tableName.equalsIgnoreCase("VIOLATION")
                        && !tableName.equalsIgnoreCase("RULE") && !tableName.equalsIgnoreCase("RULETYPE")
                        && !tableName.equalsIgnoreCase("REPAIR") && !tableName.equalsIgnoreCase("PROJECT")
                        && tableName.toUpperCase().startsWith(TABLE_PREFIX))
                    result.add(new JsonPrimitive(tableName));
            json.add("data", result);
            return json;
        } catch (Exception ex) {
            tracer.err("Exception", ex);
            throw new RuntimeException(ex);
        }
    });
}

From source file:org.elasticsearch.plugin.readonlyrest.utils.BasicAuthUtils.java

public static String getBasicAuthUser(Map<String, String> headers) {
    String authHeader = extractAuthFromHeader(headers.get("Authorization"));
    if (!Strings.isNullOrEmpty(authHeader)) {
        try {//  w  w  w.j ava  2s  . co  m
            String[] splitted = new String(Base64.getDecoder().decode(authHeader)).split(":");
            return splitted.length > 0 ? splitted[0] : null;
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        }
    }
    return null;
}

From source file:br.com.tecsinapse.exporter.converter.LocalDateTimeTableCellConverter.java

@Override
public LocalDateTime apply(String input) {
    return Strings.isNullOrEmpty(input) ? null : LocalDateTime.parse(input);
}

From source file:io.opencensus.contrib.agent.Resources.java

/**
 * Returns a resource of the given name as a temporary file.
 *
 * @param resourceName name of the resource
 * @return a temporary {@link File} containing a copy of the resource
 * @throws FileNotFoundException if no resource of the given name is found
 * @throws IOException if an I/O error occurs
 *//*w  w  w.j  a  v a 2s  .  co  m*/
static File getResourceAsTempFile(String resourceName) throws IOException {
    checkArgument(!Strings.isNullOrEmpty(resourceName), "resourceName");

    File file = File.createTempFile(resourceName, ".tmp");
    try (OutputStream os = new FileOutputStream(file)) {
        getResourceAsTempFile(resourceName, file, os);
        return file;
    }
}

From source file:org.glowroot.common.util.Throwables.java

public static String getBestMessage(Throwable t) {
    Throwable rootCause;/*from   www.j  a  va 2  s . c o m*/
    try {
        rootCause = com.google.common.base.Throwables.getRootCause(t);
    } catch (IllegalArgumentException e) {
        // guava's Throwables throws IllegalArgumentException if there is a loop in the causal
        // chain (since guava 23.0)
        logger.warn(e.getMessage(), e);
        return t.toString();
    }
    // using Throwable.toString() to include the exception class name
    // because sometimes hard to know what message means without this context
    // e.g. java.net.UnknownHostException: google.com
    String message = rootCause.toString();
    if (Strings.isNullOrEmpty(message)) {
        // unlikely, but just in case
        return rootCause.getClass().getName();
    } else {
        return message;
    }
}

From source file:org.zalando.crypto.Decrypters.java

public static List<Decrypter> findByPrefix(List<Decrypter> decrypters, String prefix) {
    Preconditions.checkNotNull(decrypters, "'Decrypter's-list should not be null");
    Preconditions.checkArgument(!Strings.isNullOrEmpty(prefix), "'prefix' should never be null or empty.");
    return Lists.newArrayList(Iterables.filter(decrypters,
            Predicates.and(new PrefixedDecrypterPredicate(), new PrefixPredicate(prefix))));
}

From source file:org.shaf.shell.util.ViewUtils.java

/**
 * Returns a progress bar.//from  ww w.ja va 2  s  .  co  m
 * 
 * @param progress
 *            the progress indicator.
 * @return the progress bar.
 */
public static final String bar(final Progress progress) {
    int percent = (int) (100 * progress.getValue());
    int len = (int) (PROGRESS_BAR_LENGTH * progress.getValue());

    StringBuilder bar = new StringBuilder();
    bar.append('[');
    bar.append(Strings.repeat("=", len));
    bar.append(Strings.repeat(" ", 20 - len));
    bar.append(Strings.repeat(" ", 3 - String.valueOf(percent).length()));
    bar.append(String.valueOf(percent) + "%");
    bar.append(']');
    bar.append(((Strings.isNullOrEmpty(progress.getMessage())) ? "" : " : " + progress.getMessage()));
    return bar.toString();
}

From source file:org.zanata.client.commands.DocNameWithExt.java

public static DocNameWithExt from(String filename) {
    String extension = FilenameUtils.getExtension(filename);
    Preconditions.checkArgument(!Strings.isNullOrEmpty(extension), "expected a full filename (with extension)");
    return new DocNameWithExt(filename);
}

From source file:org.akraievoy.base.Parse.java

@Nullable
public static Byte oneByte(@Nullable String value, @Nullable Byte defaultVal) {
    if (Strings.isNullOrEmpty(value)) {
        return defaultVal;
    }/*from   w w w .ja va2 s .  c  om*/

    try {
        return Byte.parseByte(value);
    } catch (NumberFormatException e) {
        return defaultVal;
    }
}