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:org.haiku.haikudepotserver.dataobjects.MediaType.java

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

From source file:org.mayocat.image.util.ImageUtils.java

/**
 * @param width the width of the image to compute the ratio for
 * @param height the height of the image to compute the ratio for
 * @return the image ratio, under the form <code</>x:y</code> where x represents the horizontal dimension and y the
 *         vertical dimension of the ratio
 *//*  w w  w  .j  ava 2s  . c  om*/
public static String imageRatio(Integer width, Integer height) {
    Preconditions.checkArgument(!(width == 0 && height == 0),
            "Cannot compute image ration when both width and height are zero");

    Integer gcd = IntMath.gcd(width, height);
    return (width / gcd) + ":" + (height / gcd);
}

From source file:org.janusgraph.util.encoding.ConversionHelper.java

public static final int getTTLSeconds(Duration duration) {
    Preconditions.checkArgument(duration != null && !duration.isZero(), "Must provide non-zero TTL");
    long ttlSeconds = Math.max(1, duration.getSeconds());
    assert ttlSeconds > 0;
    Preconditions.checkArgument(ttlSeconds <= Integer.MAX_VALUE, "tll value is too large [%s] - value overflow",
            duration);/*  www  .ja  v a  2s .co m*/
    return (int) ttlSeconds;
}

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

public static List<UserPasswordResetToken> findByUser(ObjectContext context, User user) {
    Preconditions.checkArgument(null != context, "the context must be supplied");
    Preconditions.checkArgument(null != user, "the user must be supplied");
    return ObjectSelect.query(UserPasswordResetToken.class).where(USER.eq(user)).select(context);
}

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

public static Optional<PkgUrlType> getByCode(ObjectContext context, String code) {
    Preconditions.checkArgument(null != context, "the context must be supplied");
    Preconditions.checkArgument(!Strings.isNullOrEmpty(code), "a code is required to get the url type");
    return getAll(context).stream().filter(put -> put.getCode().equals(code))
            .collect(SingleCollector.optional());
}

From source file:com.github.hilcode.versionator.Result.java

public static final <ANY, F, S> Result<F, S> asSuccess(final Result<ANY, S> result) {
    Preconditions.checkArgument(result.isSuccess(), "Invalid cast, this Result represents a Failure.");
    @SuppressWarnings("unchecked")
    final Result<F, S> result_ = (Result<F, S>) result;
    return result_;
}

From source file:com.github.hilcode.versionator.misc.Either.java

public static final <T, L, R> Either<L, R> asLeft(final Either<L, T> either) {
    Preconditions.checkArgument(either.isLeft(), "Invalid cast, this Either represents a Right.");
    @SuppressWarnings("unchecked")
    final Either<L, R> either_ = (Either<L, R>) either;
    return either_;
}

From source file:fr.norad.visuwall.plugin.sonar.QualityMeasures.java

static SonarQualityMeasure asQualityMeasure(Measure measure, String measureKey) {
    Preconditions.checkNotNull(measure, "measure is mandatory");
    Preconditions.checkArgument(!measureKey.isEmpty(), "measureKey is mandatory");
    Preconditions.checkNotNull(measure.getValue(), "measure must have a value");
    Double value = measure.getValue();
    SonarQualityMeasure qualityMeasure = new SonarQualityMeasure();
    qualityMeasure.setKey(measureKey);// ww w.ja  v a2 s.c  o  m
    qualityMeasure.setValue(value);
    qualityMeasure.setFormattedValue(measure.getFormattedValue());
    return qualityMeasure;
}

From source file:org.ros.android.view.visualization.TextureBitmapUtilities.java

public static Bitmap createSquareBitmap(int[] pixels, int width, int height, int fillColor) {
    Preconditions.checkArgument(pixels.length == width * height, String.format(
            "Pixel data does not match specified dimensions: %d != %d * %d", pixels.length, width, height));
    int bitmapSize = Math.max(width, height);
    int[] squarePixelArray = makeSquarePixelArray(pixels, width, height, bitmapSize, fillColor);
    return Bitmap.createBitmap(squarePixelArray, bitmapSize, bitmapSize, Bitmap.Config.ARGB_8888);
}

From source file:io.warp10.script.fwt.FWT.java

public static double[] forward(Wavelet wavelet, double[] timeBased) {
    Preconditions.checkArgument(0 == (timeBased.length & (timeBased.length - 1)),
            "Can only perform FWT on data whose cardinality is a power of 2.");

    double[] hilbert = Arrays.copyOf(timeBased, timeBased.length);

    int h = hilbert.length;
    int transformWavelength = wavelet.getTransformWavelength(); // 2, 4, 8, 16, 32, ...

    while (h >= transformWavelength) {

        double[] temp = wavelet.forward(hilbert, h);

        System.arraycopy(temp, 0, hilbert, 0, h);

        h = h >> 1;//w ww. j  ava 2 s.c om
    } // levels

    return hilbert;
}