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

Introduction

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

Prototype

public static <T> T checkNotNull(T reference)

Source Link

Document

Ensures that an object reference passed as a parameter to the calling method is not null.

Usage

From source file:in.tum.de.ase.db.TicketsHandler.java

/**
 * Inserts the provided single ticket to the database
 *
 * @param eticket/*from w w  w .  j ava  2  s . c  o m*/
 *            provided ticket
 * @throws NullPointerException
 *             if argument is null
 */
public static void insertTicket(final Eticket eticket) {
    Preconditions.checkNotNull(eticket);

    if (eticket.getType() == EticketType.SINGLE) {
        EnvironmentInitializer.getInstance().getCollection().save(eticket);
    }
}

From source file:org.apache.gobblin.compliance.utils.PartitionUtils.java

/**
 * Add single quotes to the string, if not present.
 * TestString will be converted to 'TestString'
 *///from   ww  w.j  a v a  2  s.  co m
public static String getQuotedString(String st) {
    Preconditions.checkNotNull(st);
    String quotedString = "";
    if (!st.startsWith(SINGLE_QUOTE)) {
        quotedString += SINGLE_QUOTE;
    }
    quotedString += st;
    if (!st.endsWith(SINGLE_QUOTE)) {
        quotedString += SINGLE_QUOTE;
    }
    return quotedString;
}

From source file:com.spotify.sshagenttls.CertKeyPaths.java

private static Path checkExists(final Path path) {
    Preconditions.checkNotNull(path);
    Preconditions.checkArgument(path.toFile().canRead(), path + " does not exist or cannot be read");
    return path;//  w w w  . j  a v a  2  s . c  o m
}

From source file:com.empcraft.xpbank.util.ChunkUtil.java

public static Optional<Chunk> getLoadedChunk(World world, Location loc) {
    Preconditions.checkNotNull(loc);
    Optional<Chunk> loadedChunk = Optional.absent();

    final Chunk chunkAt = world.getChunkAt(loc);
    if (chunkAt.isLoaded()) {
        loadedChunk = Optional.of(chunkAt);
    }//  ww  w  .  j  a v a 2 s. c  o m

    return loadedChunk;
}

From source file:li.klass.fhem.util.BuildVersion.java

public static void execute(VersionDependent versionDependent, int buildVersion) {
    Preconditions.checkNotNull(versionDependent);
    Preconditions.checkArgument(buildVersion > 0);

    int apiVersion = android.os.Build.VERSION.SDK_INT;
    if (apiVersion >= buildVersion) {
        versionDependent.ifAboveOrEqual();
    } else {/*from w  ww  .  j  a  va2 s.  c o  m*/
        versionDependent.ifBelow();
    }
}

From source file:edu.byu.nlp.stats.GammaDistribution.java

/**
 * self-contained gamma generator. Multiply result with scale parameter (or
 * divide by rate parameter). After Teh (npbayes).
 * /*from w ww .  j  a va 2s  .  c  o  m*/
 * Taken From knowceans.
 */
public static double sample(double shape, RandomGenerator rnd) {
    Preconditions.checkArgument(shape > 0.0);
    Preconditions.checkNotNull(rnd);

    if (shape == 1.0) {
        /* Exponential */
        return -Math.log(rnd.nextDouble());
    } else if (shape < 1.0) {
        /* Use Johnk's generator */
        double cc = 1.0 / shape;
        double dd = 1.0 / (1.0 - shape);
        while (true) {
            double xx = Math.pow(rnd.nextDouble(), cc);
            double yy = xx + Math.pow(rnd.nextDouble(), dd);
            if (yy <= 1.0) {
                // FIXME: assertion error for rr = 0.010817814317923407
                // assert yy != 0 && xx / yy > 0 : "rr = " + rr;
                // INFO: this if is a hack
                if (yy != 0 && xx / yy > 0) {
                    return -Math.log(rnd.nextDouble()) * xx / yy;
                }
            }
        }
    } else { /* rr > 1.0 */
        /* Use bests algorithm */
        double bb = shape - 1.0;
        double cc = 3.0 * shape - 0.75;
        while (true) {
            double uu = rnd.nextDouble();
            double vv = rnd.nextDouble();
            double ww = uu * (1.0 - uu);
            double yy = Math.sqrt(cc / ww) * (uu - 0.5);
            double xx = bb + yy;
            if (xx >= 0) {
                double zz = 64.0 * ww * ww * ww * vv * vv;
                assert zz > 0 && bb != 0 && xx / bb > 0;
                if ((zz <= (1.0 - 2.0 * yy * yy / xx))
                        || (Math.log(zz) <= 2.0 * (bb * Math.log(xx / bb) - yy))) {
                    return xx;
                }
            }
        }
    }
}

From source file:com.cloudera.oryx.computation.common.records.avro.AvroSpec.java

private static DataType getDataType(Schema schema) {
    Schema.Type st = schema.getType();
    Preconditions.checkNotNull(st);
    switch (st) {
    case RECORD:// w  ww.java  2 s.  c  om
        return DataType.RECORD;
    case INT:
        return DataType.INT;
    case BOOLEAN:
        return DataType.BOOLEAN;
    case FLOAT:
    case DOUBLE:
        return DataType.DOUBLE;
    case STRING:
        return DataType.STRING;
    case LONG:
        return DataType.LONG;
    default:
        throw new IllegalStateException("Cannot support schema type = " + st);
    }
}

From source file:com.facebook.buck.rules.FakeInputRule.java

public static InputRule createWithRuleKey(String absolutePath, RuleKey customRuleKey) {
    return new FakeInputRule(new File(absolutePath), Preconditions.checkNotNull(customRuleKey));
}

From source file:com.spectralogic.ds3client.helpers.JobPartTrackerFactory.java

public static JobPartTracker buildPartTracker(final Iterable<BulkObject> objects) {
    final ArrayListMultimap<String, ObjectPart> multimap = ArrayListMultimap.create();
    for (final BulkObject bulkObject : Preconditions.checkNotNull(objects)) {
        multimap.put(bulkObject.getName(), new ObjectPart(bulkObject.getOffset(), bulkObject.getLength()));
    }//  w w  w. j av a  2  s . com
    return new JobPartTrackerImpl(new HashMap<>(
            Maps.transformEntries(multimap.asMap(), new BuildObjectPartTrackerFromObjectPartGroup())));
}

From source file:com.jivesoftware.os.server.http.jetty.jersey.server.binding.Injectable.java

@SuppressWarnings("unchecked")
public static <T2> Injectable<T2> ofUnsafe(Class<T2> injectableType, Object instance) {
    Preconditions.checkNotNull(injectableType);
    Preconditions.checkNotNull(instance);
    Preconditions.checkArgument(injectableType.isAssignableFrom(instance.getClass()),
            "Injectable must be assignable to type '" + injectableType + "': " + instance);
    return new Injectable<>(injectableType, (T2) instance);
}