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.gsr.myschool.server.repos.spec.UserSpec.java

public static Specification<User> firstnameLike(final String name) {
    return new Specification<User>() {
        @Override/*from  www .  j  a  v a2s  .  com*/
        public Predicate toPredicate(Root<User> userRoot, CriteriaQuery<?> query, CriteriaBuilder cb) {
            String likePattern = Strings.isNullOrEmpty(name) ? "%" : "%" + name + "%";
            return cb.like(userRoot.<String>get("firstName"), likePattern);
        }
    };
}

From source file:com.google.cloud.tools.appengine.operations.cloudsdk.internal.args.Args.java

/**
 * Produces the flag form of a string value.
 *
 * @return {@code [--name, value]} or {@code []} if value is null.
 *///from  w  w  w .  j  a  v  a  2  s.c  o m
static List<String> string(String name, @Nullable String value) {
    if (!Strings.isNullOrEmpty(value)) {
        return Arrays.asList("--" + name, value);
    }
    return Collections.emptyList();
}

From source file:com.google.gerrit.httpd.plugins.ContextMapper.java

private static boolean isAuthorizedCall(HttpServletRequest req) {
    return !Strings.isNullOrEmpty(req.getServletPath()) && req.getServletPath().startsWith(AUTHORIZED_PREFIX);
}

From source file:org.apache.isis.schema.utils.jaxbadapters.JodaLocalDateStringAdapter.java

public static LocalDate parse(final String date) {
    if (Strings.isNullOrEmpty(date)) {
        return null;
    }/*  w  ww. j a  v  a 2  s. c  om*/
    return dateFormatter.parseLocalDate(date);
}

From source file:org.gradle.util.Path.java

public static Path path(String path) {
    if (Strings.isNullOrEmpty(path)) {
        throw new InvalidUserDataException("A path must be specified!");
    }//from w  ww.  j ava2  s .co  m
    if (path.equals(SEPARATOR)) {
        return ROOT;
    } else {
        return parsePath(path);
    }
}

From source file:org.apache.isis.schema.utils.jaxbadapters.JodaLocalTimeStringAdapter.java

public static LocalTime parse(final String date) {
    if (Strings.isNullOrEmpty(date)) {
        return null;
    }/* w  ww  . j  a  va  2s  .c om*/
    return dateFormatter.parseLocalTime(date);
}

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

public static void setup(SQLDialect dialect) {
    SQLDialectBase dialectInstance = SQLDialectBase.createDialectBaseInstance(dialect);
    get("/:project/data/rule", (x, response) -> {
        String project = x.params("project");
        if (Strings.isNullOrEmpty(project))
            throw new IllegalArgumentException("Input is not valid.");

        return SQLUtil.query(project, dialectInstance.queryRule(), true);
    });//  ww w  .ja v a  2 s .c  om

    get("/:project/data/rule/:ruleName", (x, response) -> {
        String ruleName = x.params("ruleName");
        String project = x.params("project");
        if (Strings.isNullOrEmpty(project) || Strings.isNullOrEmpty(ruleName))
            throw new IllegalArgumentException("Input is not valid.");

        return SQLUtil.query(project, dialectInstance.queryRule(ruleName), true);
    });

    delete("/:project/data/rule", (x, response) -> {
        HashMap<String, Object> json = HTTPPostJsonParser.parse(x.body());
        @SuppressWarnings("unchecked")
        List<String> ruleNames = (List<String>) json.get("rules");
        String project = (String) json.get("project");

        if (Strings.isNullOrEmpty(project) || ruleNames == null || ruleNames.size() == 0)
            throw new IllegalArgumentException("Input is not valid.");

        for (String ruleName : ruleNames)
            SQLUtil.update(project, dialectInstance.deleteRule(ruleName));
        return 0;
    });

    post("/:project/data/rule", (request, response) -> {
        String project = request.params("project");
        String type = request.queryParams("type");
        String name = request.queryParams("name");
        String table1 = request.queryParams("table1");
        String table2 = request.queryParams("table2");
        String code = request.queryParams("code");
        if (Strings.isNullOrEmpty(type) || Strings.isNullOrEmpty(name) || Strings.isNullOrEmpty(table1)
                || Strings.isNullOrEmpty(code) || Strings.isNullOrEmpty(project))
            throw new IllegalArgumentException("Input is not valid.");

        // Doing a delete and insert
        SQLUtil.update(project, dialectInstance.deleteRule(name));

        return SQLUtil.update(project,
                dialectInstance.insertRule(type.toUpperCase(), code, table1, table2, name));
    });
}

From source file:com.cloudant.common.CouchUtils.java

public static boolean isValidDocumentId(String docId) {
    // http://wiki.apache.org/couch/HTTP_Document_API#Documents
    if (Strings.isNullOrEmpty(docId)) {
        return false;
    }//  w  ww  . j a va 2  s. com

    if (docId.charAt(0) == '_') {
        return (docId.startsWith(CouchConstants._design_prefix)
                || docId.startsWith(CouchConstants._local_prefix));
    }

    return true;
}

From source file:com.fanmei.pay4j.weixin.type.CurrencyType.java

public static CurrencyType of(String type) {
    if (Strings.isNullOrEmpty(type)) {
        return CNY;
    }/*from w ww  . j ava  2s.  c o  m*/
    for (CurrencyType currencyType : CurrencyType.values()) {
        if (currencyType.desc.equals(type)) {
            return currencyType;
        }
    }
    return CNY;
}

From source file:org.killbill.billing.plugin.avatax.client.ClientUtils.java

public static Boolean getBooleanProperty(final Properties properties, final String key) {
    final String property = properties.getProperty(AvaTaxActivator.PROPERTY_PREFIX + key);
    return Strings.isNullOrEmpty(property) ? true : Boolean.valueOf(property);
}