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.parallax.server.blocklyprop.jsp.GetUrl.java

@Override
public void doTag() throws JspException, IOException {
    if (!Strings.isNullOrEmpty(url)) {
        // System.out.println("Geturl: " + url);

        PageContext pageContext = (PageContext) getJspContext();
        JspWriter out = pageContext.getOut();

        out.write(pageContext.getServletContext().getContextPath() + url);
    } else {//w w  w .j  a  v  a2 s.  c om
        System.out.println("Url = null or empty");
    }
}

From source file:com.hpcloud.mon.app.validation.MetricNameValidation.java

/**
 * Validates the {@code metricName} for the character constraints.
 * /*from   w w w . jav  a2s .  c om*/
 * @throws WebApplication if validation fails
 */
public static void validate(String metricName, @Nullable String service) {
    // General validations
    if (Strings.isNullOrEmpty(metricName))
        throw Exceptions.unprocessableEntity("Metric name is required");
    if (metricName.length() > 64)
        throw Exceptions.unprocessableEntity("Metric name %s must be 64 characters or less", metricName);
    if (!Services.isReserved(metricName) && !VALID_METRIC_NAME.matcher(metricName).matches())
        throw Exceptions.unprocessableEntity("Metric name %s may only contain: a-z A-Z 0-9 _ - .", metricName);

    // Service specific validations
    if (service != null && Services.isReserved(service)) {
        if (!Strings.isNullOrEmpty(metricName) && !Services.isValidMetricName(service, metricName)) {
            throw Exceptions.unprocessableEntity("%s is not a valid metric name for namespace %s", metricName,
                    service);
        }
    }
}

From source file:net.ltgt.guice.neo4j.Neo4jIndexProviders.java

public static Provider<Index<Node>> indexForNodes(final String name, Map<String, String> config) {
    Preconditions.checkArgument(!Strings.isNullOrEmpty(name));
    Preconditions.checkNotNull(config);// w  w w . java2  s.  co m

    final Map<String, String> configToUse = ImmutableMap.copyOf(config);

    return new Provider<Index<Node>>() {

        @Inject
        IndexManager indexManager;

        @Override
        public Index<Node> get() {
            return indexManager.forNodes(name, configToUse);
        }
    };
}

From source file:com.github.nbyl.xfdcontrol.service.Application.java

private static void installConfigLocation() throws FileNotFoundException {
    if (Strings.isNullOrEmpty(System.getProperty(SPRING_CONFIG_LOCATION))) {
        File configFile = new File(StandardSystemProperty.USER_HOME.value(), ".xfdcontrol.properties");
        LOGGER.debug("Loading configuration from file {}.", configFile.getAbsolutePath());

        if (!configFile.exists()) {
            throw new FileNotFoundException("Config file " + configFile.getPath() + " does not exist.");
        }/*from   w w  w . j  a va  2 s.co m*/

        System.setProperty(SPRING_CONFIG_LOCATION, configFile.getAbsolutePath());
    } else {
        LOGGER.debug("Configuration location already set.");
    }
}

From source file:com.parallax.server.blocklyprop.jsp.SetLocale.java

@Override
public void doTag() throws JspException, IOException {
    if (!Strings.isNullOrEmpty(locale)) {
        //            System.out.println("Set locale: " + locale);
        UserServiceImpl.getUserService().setLocale(locale);
    } else {/*  ww w. j  a  v a  2s  . c  o  m*/
        System.out.println("Locale = null or empty");
    }
}

From source file:org.apache.beam.sdk.metrics.MetricName.java

public static MetricName named(String namespace, String name) {
    checkArgument(!Strings.isNullOrEmpty(namespace), "Metric namespace must be non-empty");
    checkArgument(!Strings.isNullOrEmpty(name), "Metric name must be non-empty");
    return new AutoValue_MetricName(namespace, name);
}

From source file:org.opendaylight.netconf.sal.connect.util.MessageCounter.java

public String getNewMessageId(final String prefix) {
    Preconditions.checkArgument(Strings.isNullOrEmpty(prefix) == false, "Null or empty prefix");
    return String.format(messageIdBlueprint, prefix, getNewMessageId());
}

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

public static void assertSchema(final Schema expected, final Schema actual, String message) {
    String prefix = Strings.isNullOrEmpty(message) ? "" : message + ": ";
    assertNotNull(expected, prefix + "expected schema should not be null.");
    assertNotNull(actual, prefix + "actual schema should not be null.");
    assertEquals(expected.name(), actual.name(), prefix + "schema.name() should match.");
    assertEquals(expected.type(), actual.type(), prefix + "schema.type() should match.");
    assertEquals(expected.defaultValue(), actual.defaultValue(),
            prefix + "schema.defaultValue() should match.");
    assertEquals(expected.isOptional(), actual.isOptional(), prefix + "schema.isOptional() should match.");
    assertEquals(expected.doc(), actual.doc(), prefix + "schema.doc() should match.");
    assertEquals(expected.version(), actual.version(), prefix + "schema.version() should match.");
    //    assertMap(expected.parameters(), actual.parameters(), prefix + "schema.parameters() should match.");
    assertEquals(expected.parameters(), actual.parameters(), prefix + "schema.parameters() should match.");
    switch (expected.type()) {
    case ARRAY:/*from www.ja  v a 2  s  .  co  m*/
        assertSchema(expected.valueSchema(), actual.valueSchema(), message + "valueSchema does not match.");
        break;
    case MAP:
        assertSchema(expected.keySchema(), actual.keySchema(), message + "keySchema does not match.");
        assertSchema(expected.valueSchema(), actual.valueSchema(), message + "valueSchema does not match.");
        break;
    case STRUCT:
        assertEquals(expected.fields().size(), actual.fields().size(),
                message + "fields().size() does not match.");
        for (Field expectedField : expected.fields()) {
            Field actualField = actual.field(expectedField.name());
            assertField(expectedField, actualField, "field(" + expectedField.name() + ") does not match.");
        }
    }
}

From source file:org.apache.james.mailbox.model.BlobId.java

public static BlobId fromString(String raw) {
    Preconditions.checkArgument(!Strings.isNullOrEmpty(raw));
    return new BlobId(raw);
}

From source file:com.google.gitiles.FormatType.java

public static FormatType getFormatType(HttpServletRequest req) {
    FormatType result = (FormatType) req.getAttribute(FORMAT_TYPE_ATTRIBUTE);
    if (result != null) {
        return result;
    }//w w  w  .  j a v a2s  .c om

    String format = req.getParameter("format");
    if (format != null) {
        for (FormatType type : FormatType.values()) {
            if (format.equalsIgnoreCase(type.name())) {
                return set(req, type);
            }
        }
        throw new IllegalArgumentException("Invalid format " + format);
    }

    String accept = req.getHeader(HttpHeaders.ACCEPT);
    if (Strings.isNullOrEmpty(accept)) {
        return set(req, DEFAULT);
    }

    for (String p : accept.split("[ ,;][ ,;]*")) {
        for (FormatType type : FormatType.values()) {
            if (p.equals(type.mimeType)) {
                return set(req, type != HTML ? type : DEFAULT);
            }
        }
    }
    return set(req, DEFAULT);
}