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:tapestry.Constraints.java

/**
 * Constraint exception when flag is <code>true</code>.
 * /*  ww w.j  av  a  2s . co  m*/
 * @param flag
 *            boolean flag to be checked
 * @param message
 *            description of constraint
 */
public static final void constrain(boolean flag, String message) {
    try {
        Preconditions.checkArgument(flag, message);
    } catch (IllegalArgumentException e) {
        throw new ConstraintException(e);
    }
}

From source file:dodola.anole.lib.AsmUtils.java

/**
 * Gets the class name from a class member internal name, like {@code com/foo/Bar.baz:(I)V}.
 *//* w ww . java2s  .c  o  m*/
public static String getClassName(String memberName) {
    Preconditions.checkArgument(memberName.contains("."), "Class name passed as argument.");
    return memberName.substring(0, memberName.indexOf('.'));
}

From source file:com.continuuity.loom.scheduler.task.JobId.java

/**
 * Convert a string representation of a job id into an object while validating that the string is correctly
 * formatted. Throws an IllegalArgumentException if the string is invalid.
 *
 * @param jobIdStr String representation of a job id.
 * @return converted JobId based on the input string.
 *///  w  ww.java2s .  co  m
public static JobId fromString(String jobIdStr) {
    int index = jobIdStr.indexOf("-");
    Preconditions.checkArgument(index > 0, "invalid job id string " + jobIdStr);
    String clusterId = jobIdStr.substring(0, index);

    Preconditions.checkArgument(jobIdStr.indexOf("-", index + 1) < 0, "invalid job id string " + jobIdStr);
    long jobNum = Long.valueOf(jobIdStr.substring(index + 1));

    return new JobId(clusterId, jobNum);
}

From source file:org.haiku.haikudepotserver.dataobjects.UserRatingStability.java

public static List<UserRatingStability> getAll(ObjectContext context) {
    Preconditions.checkArgument(null != context, "the context must be supplied");
    return ObjectSelect.query(UserRatingStability.class).orderBy(NAME.asc()).sharedCache().select(context);
}

From source file:nl.matsv.viabackwards.ViaBackwards.java

public static void init(ViaBackwardsPlatform platform) {
    Preconditions.checkArgument(platform != null, "ViaBackwards is already initialized");

    ViaBackwards.platform = platform;/*from   w w w .  j a  va 2 s . c o m*/
}

From source file:com.zaradai.kunzite.optimizer.model.Series.java

public static Series newStepSeries(double start, double step, int steps) {
    Preconditions.checkArgument(step > 0, "Step must be positive");

    Series res = new Series();

    double value = start;

    for (int i = 0; i < steps; ++i) {
        res.values.add(value);/* www . j a  v a2  s .c om*/
        value += step;
    }

    return res;
}

From source file:com.google.security.zynamics.binnavi.disassembly.algorithms.CViewNodeHelpers.java

/**
 * Determines the start address of a view node.
 * //from   www  . ja va2  s .  co m
 * @param node The node whose address is determined.
 * 
 * @return The start address of the node.
 */
public static IAddress getAddress(final INaviViewNode node) {
    Preconditions.checkArgument(node instanceof IAddressNode,
            "IE00431: Node is not a code node or a function node");
    return ((IAddressNode) node).getAddress();
}

From source file:com.palantir.atlasdb.schema.SchemaVersion.java

public static SchemaVersion create(long version, long hotfix, long hotfixHotfix) {
    Preconditions.checkArgument(version > 0, "version must be greater than 0");
    return new SchemaVersion(version, hotfix, hotfixHotfix);
}

From source file:org.haiku.haikudepotserver.dataobjects.PkgLocalization.java

public static Optional<PkgLocalization> getForPkgAndNaturalLanguageCode(ObjectContext context, Pkg pkg,
        final String naturalLanguageCode) {
    Preconditions.checkArgument(null != context, "the context must be supplied");
    Preconditions.checkArgument(null != pkg, "the pkg must be supplied");
    Preconditions.checkArgument(!Strings.isNullOrEmpty(naturalLanguageCode),
            "the natural language code must be supplied");
    return findForPkg(context, pkg).stream()
            .filter(l -> l.getNaturalLanguage().getCode().equals(naturalLanguageCode))
            .collect(SingleCollector.optional());
}

From source file:org.fusesource.process.manager.support.FileUtils.java

public static void extractArchive(File archiveFile, File targetDirectory, String extractCommand,
        Duration timeLimit, Executor executor) throws CommandFailedException {
    Preconditions.checkNotNull(archiveFile, "archiveFile is null");
    Preconditions.checkNotNull(targetDirectory, "targetDirectory is null");
    Preconditions.checkArgument(targetDirectory.isDirectory(),
            "targetDirectory is not a directory: " + targetDirectory.getAbsolutePath());

    final String[] commands = extractCommand.split(" ");
    final String[] args = Arrays.copyOf(commands, commands.length + 1);
    args[args.length - 1] = archiveFile.getAbsolutePath();
    new Command(args).setDirectory(targetDirectory).setTimeLimit(timeLimit).execute(executor);
}