Example usage for org.apache.commons.lang Validate isTrue

Introduction

In this page you can find the example usage for org.apache.commons.lang Validate isTrue.

Prototype

public static void isTrue(boolean expression, String message)

Source Link

Document

Validate an argument, throwing IllegalArgumentException if the test result is false.

This is used when validating according to an arbitrary boolean expression, such as validating a primitive number or using your own custom validation expression.

 Validate.isTrue( (i > 0), "The value must be greater than zero"); Validate.isTrue( myObject.isOk(), "The object is not OK");

For performance reasons, the message string should not involve a string append, instead use the #isTrue(boolean,String,Object) method.

Usage

From source file:com.opengamma.analytics.math.interpolation.DistanceCalculator.java

public static double getDistance(final double[] x1, final double[] x2) {
    final int dim = x1.length;
    Validate.isTrue(dim == x2.length, "different dimensions");
    double sum = 0;
    double diff;//from   www. jav  a  2s. c o m
    for (int i = 0; i < dim; i++) {
        diff = x1[i] - x2[i];
        sum += diff * diff;
    }
    return Math.sqrt(sum);
}

From source file:com.opengamma.analytics.financial.timeseries.util.TimeSeriesDataTestUtils.java

/**
 * Tests that the time series is not null or empty
 * @param ts The time series/*from   w  w  w .  j  a  va2s. c o m*/
 * @throws IllegalArgumentException If the time series is null or empty
 */
public static void testNotNullOrEmpty(final DoubleTimeSeries<?> ts) {
    Validate.notNull(ts, "time series");
    Validate.isTrue(!ts.isEmpty(), "time series");
}

From source file:com.opengamma.analytics.math.TrigonometricFunctionUtils.java

public static double acosh(final double x) {
    final double y = x * x - 1;
    Validate.isTrue(y >= 0, "|x|>=1.0 for real solution");
    return Math.log(x + Math.sqrt(x * x - 1));
}

From source file:com.jaxio.celerio.util.PackageUtil.java

static public String assemblePackage(String... packageChunks) {
    StringBuilder sb = new StringBuilder();

    for (String packageChunk : packageChunks) {
        if (stripToNull(packageChunk) != null) {
            if (sb.length() > 0) {
                sb.append(".");
            }/*from   www. j  a  v a 2 s.  co m*/
            sb.append(packageChunk.trim());
        }
    }

    Validate.isTrue(sb.length() > 0, "An assembled package is null or empty!");
    return sb.toString();
}

From source file:com.github.fritaly.svngraph.Utils.java

public static void validateElement(Element element, String name) {
    Validate.notNull(element, "The given DOM element is null");
    Validate.isTrue(element.getNodeName().equals(name),
            String.format("The name of the given element isn't valid (Expected: '%s', Actual: '%s'", name,
                    element.getNodeName()));
}

From source file:com.opengamma.analytics.financial.model.volatility.surface.Strike.java

public Strike(final double value) {
    Validate.isTrue(value >= 0, "negative strike");
    _value = value;
}

From source file:com.opengamma.analytics.financial.model.volatility.surface.Moneyness.java

public Moneyness(final double value) {
    Validate.isTrue(value >= 0, "negative moneyness");
    _value = value;
}

From source file:com.opengamma.maths.lowlevelapi.functions.utilities.Sum.java

/**
 * Sums over selected indices of a given vector
 * @param v the vector over which the sum will be undertaken
 * @param idx the indices to be included in the sum
 * @return the sum of dereferenced indices of vector v
 *///from  w  w  w .  j a  v  a2 s  .  com
public static double overIndices(double[] v, int[] idx) {
    Validate.notNull(v);
    Validate.notNull(idx);
    final int n = v.length;
    Validate.isTrue(Max.value(idx) < n, "Index out of range. Max of indexes is " + Max.value(idx)
            + " whereas vector to dereference is length " + n);
    Validate.isTrue(Min.value(idx) > -1, "Negative index dereference requested on vector");
    double tmp = 0;
    final int idxn = idx.length;
    for (int i = 0; i < idxn; i++) {
        tmp += v[idx[i]];
    }
    return tmp;
}

From source file:com.opengamma.analytics.math.matrix.DoubleMatrixUtils.java

/**
 * The identity matrix is a matrix with diagonal elements equals to one and zero elsewhere.
 * @param dimension The dimension of matrix required, not negative or zero
 * @return The identity matrix//from   w  w  w  . j  a  va 2s  . c  o  m
 */
public static DoubleMatrix2D getIdentityMatrix2D(final int dimension) {
    Validate.isTrue(dimension >= 0, "dimension must be >= 0");
    if (dimension == 0) {
        return DoubleMatrix2D.EMPTY_MATRIX;
    }
    if (dimension == 1) {
        return new DoubleMatrix2D(new double[][] { new double[] { 1 } });
    }
    final double[][] data = new double[dimension][dimension];
    for (int i = 0; i < dimension; i++) {
        data[i][i] = 1;
    }
    return new DoubleMatrix2D(data);
}

From source file:com.opengamma.analytics.financial.model.finitedifference.MeshingFunction.java

protected MeshingFunction(final int nPoints) {
    Validate.isTrue(nPoints > 1, "Need more than 1 point for a mesh");
    _nPoints = nPoints;
}