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:co.cask.hydrator.plugin.common.CubeUtils.java

public static Map<String, String> parseAndGetProperties(String property, String propertyValue, String delimiter,
        String fieldDelimiter, Function<String, String> keyFunction) {
    Map<String, String> result = new HashMap<>();
    List<String> fieldGroups = Arrays.asList(propertyValue.split(delimiter));
    for (String group : fieldGroups) {
        String[] split = group.split(fieldDelimiter);
        if (split.length != 2) {
            //should not happen
            throw new IllegalArgumentException(
                    String.format("For Property {} Parameter {} , name or value is empty, please check config",
                            property, group));
        }//from w w  w  .j a  va 2 s.c o m
        if (Strings.isNullOrEmpty(split[0])) {
            throw new IllegalArgumentException(String.format("Empty key/value is not allowed in {}", property));
        }
        if (Strings.isNullOrEmpty(split[1])) {
            throw new IllegalArgumentException(String.format("Empty key/value is not allowed in {}", property));
        }
        result.put(keyFunction.apply(split[0]), split[1]);
    }
    return result;
}

From source file:org.apache.isis.core.metamodel.facets.param.parameter.regex.RegExFacetForParameterAnnotation.java

public static RegExFacet create(final Parameter parameter, final Class<?> parameterType,
        final FacetHolder holder) {

    if (parameter == null) {
        return null;
    }// www  .j  a va2s .  c  o m
    if (!Annotations.isString(parameterType)) {
        return null;
    }

    final String pattern = parameter.regexPattern();
    if (Strings.isNullOrEmpty(pattern)) {
        return null;
    }

    final String replacement = parameter.regexPatternReplacement();
    final int patternFlags = parameter.regexPatternFlags();

    return new RegExFacetForParameterAnnotation(pattern, patternFlags, holder, replacement);
}

From source file:org.apache.isis.core.metamodel.facets.properties.property.regex.RegExFacetForPropertyAnnotation.java

public static RegExFacet create(final Property annotation, final Class<?> returnType,
        final FacetHolder holder) {

    if (annotation == null) {
        return null;
    }/*from ww  w  .  j a  v  a  2s  .  c  om*/

    if (!Annotations.isString(returnType)) {
        return null;
    }

    final String pattern = annotation.regexPattern();
    if (Strings.isNullOrEmpty(pattern)) {
        return null;
    }

    final String replacement = annotation.regexPatternReplacement();
    final int patternFlags = annotation.regexPatternFlags();

    return new RegExFacetForPropertyAnnotation(pattern, patternFlags, holder, replacement);
}

From source file:com.google.devtools.depan.filesystem.eclipse.FileSystemNodePainter.java

private static final Color getColor(String key) {
    String colorTxt = prefs.getString(key);
    if (Strings.isNullOrEmpty(colorTxt)) {
        return Color.BLACK;
    }//from www  .j  a v a2  s.c o  m

    return Colors.getRgb(colorTxt);
}

From source file:com.enonic.cms.core.search.facet.model.AbstractFacetModel.java

public void validate() {
    if (Strings.isNullOrEmpty(this.name)) {
        throw new FacetQueryException("Facet must specify name");
    }//  www . ja v  a2s  .  co m
}

From source file:com.infinities.keystone4j.KeystonePreconditions.java

public static void requireMatchingId(String id, BaseEntity entity) {
    if (!Strings.isNullOrEmpty(entity.getId()) && !id.equals(entity.getId())) {
        throw new BadRequestException(REQUIRE_MATCHING_ID);

    }/* w  w  w  .j  a va 2 s . c o  m*/
}

From source file:com.infinities.skyport.distributed.impl.hazelcast.hazeltask.Hazeltask.java

public synchronized static HazeltaskInstance newHazeltaskInstance(String topologyName,
        HazelcastInstance hazelcast, PoolConfig poolConfig, ScheduledExecutorService scheduler,
        ServiceProvider serviceProvider) {
    if (Strings.isNullOrEmpty(topologyName)) {
        throw new NullPointerException(topologyName);
    }//w  w  w.j  a  va  2  s.c o  m
    HazeltaskInstance instance = instances.get(topologyName);
    if (instance == null) {
        checkNotNull(hazelcast, "invalid hazelcast");
        checkNotNull(poolConfig, "invalid poolConfig");
        checkNotNull(scheduler, "invalid scheduler");
        checkNotNull(serviceProvider, "invalid service provider");
        instance = new HazeltaskInstance(topologyName, hazelcast, poolConfig, scheduler, serviceProvider);
        if (instances.putIfAbsent(instance.getTopologyName(), instance) != null) {
            throw new IllegalStateException("An instance for the name " + topologyName + " already exists!");
        }
        instance.start();
    }

    return instance;
}

From source file:org.apache.james.core.User.java

public static User fromUsername(String username) {
    Preconditions.checkNotNull(username);
    Preconditions.checkArgument(!Strings.isNullOrEmpty(username));

    List<String> parts = ImmutableList.copyOf(Splitter.on('@').split(username));
    switch (parts.size()) {
    case 1://from w  ww  .  j a v  a  2  s  . com
        return fromLocalPartWithoutDomain(username);
    case 2:
        return fromLocalPartWithDomain(parts.get(0), parts.get(1));
    }
    throw new IllegalArgumentException("The username should not contain multiple domain delimiter.");
}

From source file:org.apache.cloudstack.acl.RoleType.java

public static RoleType fromString(final String name) {
    if (!Strings.isNullOrEmpty(name) && Enums.getIfPresent(RoleType.class, name).isPresent()) {
        return RoleType.valueOf(name);
    }/*  ww w .java 2s.  c  om*/
    throw new IllegalStateException("Illegal RoleType name provided");
}

From source file:com.arto.event.util.StringUtil.java

public static String checkSize(Object obj, int maxSize) throws Exception {
    if (obj == null)
        return "";

    String value = "";
    if (obj instanceof String) {
        value = (String) obj;//from   ww  w.ja  va 2  s  . co  m
    } else {
        value = toJsonString(obj);
    }

    if (Strings.isNullOrEmpty(value) || maxSize <= 0) {
        return value;
    }

    if (value.getBytes("utf-8").length <= maxSize) {
        return value;
    }
    throw new Exception("String size over max size. string:" + value + ", max size:" + maxSize);
}