Example usage for java.lang Number longValue

Introduction

In this page you can find the example usage for java.lang Number longValue.

Prototype

public abstract long longValue();

Source Link

Document

Returns the value of the specified number as a long .

Usage

From source file:de.cebitec.readXplorer.util.GeneralUtils.java

/**
 * Converts a given number into a number of the given classType. If this is
 * not possible, it throws a ClassCastException
 * @param <T> one of the classes derived from Number
 * @param classType the type to convert the number into
 * @param number the number to convert/* www  .ja v  a  2s .c  o  m*/
 * @return The converted number
 */
public static <T extends Number> T convertNumber(Class<T> classType, Number number) throws ClassCastException {
    T convertedValue = null;
    if (classType.equals(Integer.class)) {
        convertedValue = classType.cast(number.intValue());
    } else if (classType.equals(Double.class)) {
        convertedValue = classType.cast(number.doubleValue());
    } else if (classType.equals(Long.class)) {
        convertedValue = classType.cast(number.longValue());
    } else if (classType.equals(Float.class)) {
        convertedValue = classType.cast(number.floatValue());
    } else if (classType.equals(Short.class)) {
        convertedValue = classType.cast(number.shortValue());
    } else if (classType.equals(Byte.class)) {
        convertedValue = classType.cast(number.byteValue());
    }

    if (convertedValue == null) {
        throw new ClassCastException("Cannot cast the given number into the given format.");
    }

    return convertedValue;
}

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From source file:NumberUtils.java

/**
 * Converts the given number to a <code>java.math.BigDecimal</code>.
 *
 * @param number//w ww.  ja  va2 s.c o m
 * @return java.math.BigDecimal
 * @throws IllegalArgumentException The given number is 'not a number' or infinite.
 */
public static BigDecimal toBigDecimal(Number number) throws IllegalArgumentException {
    if (number == null || number instanceof BigDecimal)
        return (BigDecimal) number;
    if (number instanceof BigInteger)
        return new BigDecimal((BigInteger) number);
    if (isDoubleCompatible(number)) {
        if (isNaN(number) || isInfinite(number))
            throw new IllegalArgumentException("Argument must not be NaN or infinite.");
        return new BigDecimal(number.toString());
    }
    if (isLongCompatible(number))
        return BigDecimal.valueOf(number.longValue());
    // => unknown Number type
    return new BigDecimal(String.valueOf(number.doubleValue()));
}

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From source file:iDynoOptimizer.MOEAFramework26.src.org.moeaframework.util.tree.NumberArithmetic.java

/**
 * Returns the value of dividing the first number by the second.  If the
 * second argument is {@code 0} and function protection is enabled, this
 * function returns {@code 1} regardless of the first argument's value.
 * /*from   w  w w  .ja  v  a 2 s  . c o m*/
 * @param a the first number
 * @param b the second number
 * @return the value of dividing the first number by the second
 */
public static Number div(Number a, Number b) {
    if (isFloatingPoint(a) || isFloatingPoint(b)) {
        if ((Math.abs(b.doubleValue()) < Settings.EPS) && Settings.isProtectedFunctions()) {
            return 1.0;
        } else {
            return a.doubleValue() / b.doubleValue();
        }
    } else {
        if ((b.longValue() == 0) && Settings.isProtectedFunctions()) {
            return 1L;
        } else {
            return a.longValue() / b.longValue();
        }
    }
}

---

From source file:iDynoOptimizer.MOEAFramework26.src.org.moeaframework.util.tree.NumberArithmetic.java

/**
 * Returns the remainder from dividing the first number by the second.  If
 * the second argument is {@code 0} and function protection is enabled, 
 * this function returns {@code 0} regardless of the first argument's
 * value.//from w w  w.j a  va 2  s .c om
 * 
 * @param a the first number
 * @param b the second number
 * @return the remainder from dividing the first number by the second
 */
public static Number mod(Number a, Number b) {
    if (isFloatingPoint(a) || isFloatingPoint(b)) {
        if ((Math.abs(b.doubleValue()) < Settings.EPS) && Settings.isProtectedFunctions()) {
            return 0.0;
        } else {
            return a.doubleValue() % b.doubleValue();
        }
    } else {
        if ((b.longValue() == 0) && Settings.isProtectedFunctions()) {
            return 0L;
        } else {
            return a.longValue() % b.longValue();
        }
    }
}

---

From source file:eu.geopaparazzi.library.util.Utilities.java

/**
 * Tries to adapt a value to the supplied type.
 *
 * @param value   the value to adapt.//from w  w w  .j  a  va2 s .  c om
 * @param adaptee the class to adapt to.
 * @return the adapted object or <code>null</code>, if it fails.
 */
public static <T> T adapt(Object value, Class<T> adaptee) {
    if (value instanceof Number) {
        Number num = (Number) value;
        if (adaptee.isAssignableFrom(Double.class)) {
            return adaptee.cast(num.doubleValue());
        } else if (adaptee.isAssignableFrom(Float.class)) {
            return adaptee.cast(num.floatValue());
        } else if (adaptee.isAssignableFrom(Integer.class)) {
            return adaptee.cast(num.intValue());
        } else if (adaptee.isAssignableFrom(Long.class)) {
            return adaptee.cast(num.longValue());
        } else if (adaptee.isAssignableFrom(String.class)) {
            return adaptee.cast(num.toString());
        } else {
            throw new IllegalArgumentException();
        }
    } else if (value instanceof String) {
        if (adaptee.isAssignableFrom(Double.class)) {
            try {
                Double parsed = Double.parseDouble((String) value);
                return adaptee.cast(parsed);
            } catch (Exception e) {
                return null;
            }
        } else if (adaptee.isAssignableFrom(Float.class)) {
            try {
                Float parsed = Float.parseFloat((String) value);
                return adaptee.cast(parsed);
            } catch (Exception e) {
                return null;
            }
        } else if (adaptee.isAssignableFrom(Integer.class)) {
            try {
                Integer parsed = Integer.parseInt((String) value);
                return adaptee.cast(parsed);
            } catch (Exception e) {
                return null;
            }
        } else if (adaptee.isAssignableFrom(String.class)) {
            return adaptee.cast(value);
        } else {
            throw new IllegalArgumentException();
        }
    } else {
        throw new IllegalArgumentException(
                "Can't adapt attribute of type: " + value.getClass().getCanonicalName()); //$NON-NLS-1$
    }
}

---

From source file:NumberUtils.java

/**
 * Converts the given number to a <code>java.math.BigInteger</code>.
 *
 * @param number/*  w ww . j a  va2 s.co m*/
 * @return java.math.BigInteger
 * @throws IllegalArgumentException The given number is 'not a number' or infinite.
 */
public static BigInteger toBigInteger(Number number) throws IllegalArgumentException {
    if (number == null || number instanceof BigInteger)
        return (BigInteger) number;
    if (number instanceof BigDecimal)
        return ((BigDecimal) number).toBigInteger();
    if (isDoubleCompatible(number)) {
        if (isNaN(number) || isInfinite(number))
            throw new IllegalArgumentException("Argument must not be NaN or infinite.");
        return new BigDecimal(number.toString()).toBigInteger();
    } // => isLongCompatible(number) or unknown Number type
    return BigInteger.valueOf(number.longValue());
}

---

From source file:org.paxle.se.index.lucene.impl.Converter.java

private static Fieldable number2field(org.paxle.core.doc.Field<?> field, Number data) {
    /* ===========================================================
     * Numbers//from   www  .ja  v  a  2 s .c  o m
     * - may be stored (if so, not compressed)
     * - may be indexed (no tokenization)
     * - no term vectors
     * =========================================================== */
    final long num;
    if (data instanceof Double) {
        num = Double.doubleToLongBits(data.doubleValue());
    } else if (data instanceof Float) {
        num = Float.floatToIntBits(data.floatValue());
    } else {
        num = data.longValue();
    }

    if (field.isIndex()) {
        return new Field(field.getName(), PaxleNumberTools.longToString(num), store(field, false),
                index(field));
    } else {
        return new Field(field.getName(), PaxleNumberTools.toBytes(num), store(field, false));
    }
}

---

From source file:com.redhat.rhn.domain.server.ServerFactory.java

/**
 * List all proxies for a given org//from w  w  w  . j  av  a  2 s. c om
 * @param user the user, who's accessible proxies will be returned.
 * @return a list of Proxy Server objects
 */
public static List<Server> lookupProxiesByOrg(User user) {
    Map<String, Object> params = new HashMap<String, Object>();
    params.put("userId", user.getId());
    params.put("orgId", user.getOrg().getId());
    List<Number> ids = singleton.listObjectsByNamedQuery("Server.listProxies", params);
    List<Server> servers = new ArrayList(ids.size());
    for (Number id : ids) {
        servers.add(lookupById(id.longValue()));
    }
    return servers;
}

---

From source file:com.redhat.rhn.domain.server.ServerFactory.java

/**
 * transforms a result set of id,name, count to a HostAndGuestCountView
 * object/*from   w ww . j a v  a  2 s.c o m*/
 * @param result a list of Object array of id,name, count
 * @return list of HostAndGuestCountView objects
 */
private static List convertToCountView(List out) {
    List ret = new ArrayList(out.size());
    for (Iterator itr = out.iterator(); itr.hasNext();) {
        Object[] row = (Object[]) itr.next();

        Number hostId = (Number) row[0];
        Long theHostId = new Long(hostId.longValue());
        String theHostName = (String) row[1];
        int guestCount = ((Number) row[2]).intValue();

        HostAndGuestCountView view = new HostAndGuestCountView(theHostId, theHostName, guestCount);
        ret.add(view);
    }
    return ret;
}

---

From source file:org.apache.jackrabbit.oak.plugins.document.util.Utils.java

/**
 * Returns the given number instance as a {@code Long}.
 *
 * @param n a number or {@code null}./*from   w ww  .  j av a 2  s  . c om*/
 * @return the number converted to a {@code Long} or {@code null}
 *      if {@code n} is {@code null}.
 */
public static Long asLong(@Nullable Number n) {
    if (n == null) {
        return null;
    } else if (n instanceof Long) {
        return (Long) n;
    } else {
        return n.longValue();
    }
}

---

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