Example usage for com.google.common.base Preconditions checkArgument

Introduction

In this page you can find the example usage for com.google.common.base Preconditions checkArgument.

Prototype

public static void checkArgument(boolean expression, @Nullable Object errorMessage)

Source Link

Document

Ensures the truth of an expression involving one or more parameters to the calling method.

Usage

From source file:io.druid.query.Queries.java

public static void verifyAggregations(List<AggregatorFactory> aggFactories, List<PostAggregator> postAggs) {
    Preconditions.checkNotNull(aggFactories, "aggregations cannot be null");
    Preconditions.checkArgument(aggFactories.size() > 0, "Must have at least one AggregatorFactory");

    final Set<String> aggNames = Sets.newHashSet();
    for (AggregatorFactory aggFactory : aggFactories) {
        Preconditions.checkArgument(aggNames.add(aggFactory.getName()), "[%s] already defined",
                aggFactory.getName());/*from  ww w  . j  a  v a  2  s.  c o  m*/
    }

    if (postAggs != null && !postAggs.isEmpty()) {
        final Set<String> combinedAggNames = Sets.newHashSet(aggNames);

        for (PostAggregator postAgg : postAggs) {
            final Set<String> dependencies = postAgg.getDependentFields();
            final Set<String> missing = Sets.difference(dependencies, combinedAggNames);

            Preconditions.checkArgument(missing.isEmpty(), "Missing fields [%s] for postAggregator [%s]",
                    missing, postAgg.getName());
            Preconditions.checkArgument(combinedAggNames.add(postAgg.getName()), "[%s] already defined");
        }
    }
}

From source file:org.geogig.osm.internal.log.OSMMappingLogEntry.java

public static OSMMappingLogEntry fromString(String s) {
    String[] tokens = s.split("\t");
    Preconditions.checkArgument(tokens.length == 2, "Wrong mapping log entry definition");
    return new OSMMappingLogEntry(ObjectId.valueOf(tokens[0]), ObjectId.valueOf(tokens[1]));
}

From source file:org.rpmcomparator.service.ValidatorUtil.java

/**
 * @param fileName/* w ww  . j  a va  2  s  . c o  m*/
 * @return
 * @throws IOException,RuntimeException
 */
public static File getValideFile(String fileName) {
    File file = new File(Preconditions.checkNotNull(fileName, "Give file cannot be null"));
    Preconditions.checkArgument(file.exists(), "Give file:" + fileName + "Should exist");
    return file;
}

From source file:security.AuthenticationManager.java

public static void authenticateUser(String userName, String password) throws NamingException {
    Preconditions.checkArgument(!StringUtils.isAnyEmpty(userName, password),
            "Username or password cannot be empty");
    try {//www  .j  a  v a2  s  .  c  o m
        LoginContext lc = new LoginContext("WHZ-Authentication", new WHZCallbackHandler(userName, password));
        lc.login();
    } catch (LoginException le) {
        throw new AuthenticationException(le.toString());
    }
}

From source file:com.xiaomi.linden.hadoop.indexing.util.LindenConfigBuilder.java

public static LindenConfig build() throws IOException {
    File lindenProperties = new File("lindenProperties");
    Preconditions.checkArgument(lindenProperties.exists(), "can not find linden properties file.");

    try {//from  w  ww.  j a  v a 2  s .  c om
        LindenConfig lindenConf = com.xiaomi.linden.core.LindenConfigBuilder.build(lindenProperties);
        File lindenSchema = new File("lindenSchema");
        Preconditions.checkArgument(lindenSchema.exists(), "can not find linden schema file.");
        LindenSchema schema;
        try {
            schema = LindenSchemaBuilder.build(lindenSchema);
        } catch (Exception e) {
            logger.error("Linden schema builder exception", e);
            throw new IOException(e);
        }
        lindenConf.setSchema(schema);
        lindenConf.setIndexType(LindenConfig.IndexType.RAM);
        return lindenConf;
    } catch (Exception e) {
        logger.error("Linden search config builder exception", e);
        throw new IOException(e);
    }
}

From source file:io.spikex.core.util.StringTokenizer.java

public static String[] tokenize(final String str, final String delim) {

    // Sanity checks
    Preconditions.checkArgument(str != null && str.length() > 0, "str is null or empty");
    Preconditions.checkArgument(delim != null && delim.length() > 0, "delim is null or empty");

    String[] temp = m_temp.get();
    int tempLen = (str.length() / 2) + 2;
    int delimLen = delim.length();

    if (temp == null || temp.length < tempLen) {
        temp = new String[tempLen];
        m_temp.set(temp);//  w  ww  . java2  s. co m
    }

    int wordCount = 0;
    int i = 0;
    int j = str.indexOf(delim);

    while (j >= 0) {
        temp[wordCount++] = str.substring(i, j);
        i = j + delimLen;
        j = str.indexOf(delim, i);
    }

    //temp[wordCount++] = str.substring(i);
    m_remaining.set(str.substring(i).getBytes().length);

    String[] result = new String[wordCount];
    System.arraycopy(temp, 0, result, 0, wordCount);
    return result;
}

From source file:org.eclipse.xtend.core.macro.ConditionUtils.java

public static void notRemoved(final EObject object, final String name) {
    StringConcatenation _builder = new StringConcatenation();
    _builder.append(name);//from   w  w  w  . j av a  2  s .c o m
    _builder.append(" cannot be null");
    Preconditions.checkArgument((object != null), _builder);
    Resource _eResource = object.eResource();
    boolean _tripleNotEquals = (_eResource != null);
    StringConcatenation _builder_1 = new StringConcatenation();
    _builder_1.append(name);
    _builder_1.append(" cannot be removed");
    Preconditions.checkArgument(_tripleNotEquals, _builder_1);
}

From source file:de.jackwhite20.cobra.client.CobraClientFactory.java

public static CobraClient create(int connectTimeout) {

    Preconditions.checkArgument(connectTimeout > 0, "connectTimeout cannot be negative");

    return new CobraClientImpl(connectTimeout);
}

From source file:com.github.steveash.jg2p.util.Zipper.java

public static <A, B> List<Pair<A, B>> up(Iterable<A> a, Iterable<B> b) {
    ArrayList<Pair<A, B>> result = Lists.newArrayList();
    Iterator<A> iterA = a.iterator();
    Iterator<B> iterB = b.iterator();
    while (iterA.hasNext()) {
        Preconditions.checkArgument(iterB.hasNext(), "B is shorter than A, must be same size");
        A aa = iterA.next();/*  w ww. j  a  va2  s. c  o m*/
        B bb = iterB.next();
        result.add(Pair.of(aa, bb));
    }
    Preconditions.checkArgument(!iterB.hasNext(), "A is shorter than B, must be same size");
    return result;
}

From source file:org.apache.beam.sdk.extensions.euphoria.core.translate.OperatorTranslators.java

static <T> PCollection<T> getSingleInput(PCollectionList<T> inputs) {
    Preconditions.checkArgument(inputs.size() == 1, "There should be exactly one input.");
    return inputs.get(0);
}