Example usage for java.lang Number shortValue

List of usage examples for java.lang Number shortValue

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Introduction

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

Prototype

public short shortValue()

Source Link

Document

Returns the value of the specified number as a short .

Usage

From source file:Main.java

/**
 * convert value to given type./*w w  w .j  a  v  a 2 s  . c o  m*/
 * null safe.
 *
 * @param value value for convert
 * @param type  will converted type
 * @return value while converted
 */
public static Object convertCompatibleType(Object value, Class<?> type) {

    if (value == null || type == null || type.isAssignableFrom(value.getClass())) {
        return value;
    }
    if (value instanceof String) {
        String string = (String) value;
        if (char.class.equals(type) || Character.class.equals(type)) {
            if (string.length() != 1) {
                throw new IllegalArgumentException(String.format("CAN NOT convert String(%s) to char!"
                        + " when convert String to char, the String MUST only 1 char.", string));
            }
            return string.charAt(0);
        } else if (type.isEnum()) {
            return Enum.valueOf((Class<Enum>) type, string);
        } else if (type == BigInteger.class) {
            return new BigInteger(string);
        } else if (type == BigDecimal.class) {
            return new BigDecimal(string);
        } else if (type == Short.class || type == short.class) {
            return Short.valueOf(string);
        } else if (type == Integer.class || type == int.class) {
            return Integer.valueOf(string);
        } else if (type == Long.class || type == long.class) {
            return Long.valueOf(string);
        } else if (type == Double.class || type == double.class) {
            return Double.valueOf(string);
        } else if (type == Float.class || type == float.class) {
            return Float.valueOf(string);
        } else if (type == Byte.class || type == byte.class) {
            return Byte.valueOf(string);
        } else if (type == Boolean.class || type == boolean.class) {
            return Boolean.valueOf(string);
        } else if (type == Date.class) {
            try {
                return new SimpleDateFormat(DATE_FORMAT).parse((String) value);
            } catch (ParseException e) {
                throw new IllegalStateException("Failed to parse date " + value + " by format " + DATE_FORMAT
                        + ", cause: " + e.getMessage(), e);
            }
        } else if (type == Class.class) {
            return forName((String) value);
        }
    } else if (value instanceof Number) {
        Number number = (Number) value;
        if (type == byte.class || type == Byte.class) {
            return number.byteValue();
        } else if (type == short.class || type == Short.class) {
            return number.shortValue();
        } else if (type == int.class || type == Integer.class) {
            return number.intValue();
        } else if (type == long.class || type == Long.class) {
            return number.longValue();
        } else if (type == float.class || type == Float.class) {
            return number.floatValue();
        } else if (type == double.class || type == Double.class) {
            return number.doubleValue();
        } else if (type == BigInteger.class) {
            return BigInteger.valueOf(number.longValue());
        } else if (type == BigDecimal.class) {
            return BigDecimal.valueOf(number.doubleValue());
        } else if (type == Date.class) {
            return new Date(number.longValue());
        }
    } else if (value instanceof Collection) {
        Collection collection = (Collection) value;
        if (type.isArray()) {
            int length = collection.size();
            Object array = Array.newInstance(type.getComponentType(), length);
            int i = 0;
            for (Object item : collection) {
                Array.set(array, i++, item);
            }
            return array;
        } else if (!type.isInterface()) {
            try {
                Collection result = (Collection) type.newInstance();
                result.addAll(collection);
                return result;
            } catch (Throwable e) {
                e.printStackTrace();
            }
        } else if (type == List.class) {
            return new ArrayList<>(collection);
        } else if (type == Set.class) {
            return new HashSet<>(collection);
        }
    } else if (value.getClass().isArray() && Collection.class.isAssignableFrom(type)) {
        Collection collection;
        if (!type.isInterface()) {
            try {
                collection = (Collection) type.newInstance();
            } catch (Throwable e) {
                collection = new ArrayList<>();
            }
        } else if (type == Set.class) {
            collection = new HashSet<>();
        } else {
            collection = new ArrayList<>();
        }
        int length = Array.getLength(value);
        for (int i = 0; i < length; i++) {
            collection.add(Array.get(value, i));
        }
        return collection;
    }
    return value;
}

From source file:nl.strohalm.cyclos.utils.conversion.CoercionHelper.java

@SuppressWarnings({ "unchecked", "rawtypes" })
private static Object convert(Class toType, Object value) {
    if ("".equals(value)) {
        value = null;//from w ww.jav  a 2  s  .c  o  m
    }
    // If we do not want a collection, but the value is one, use the first value
    if (value != null && !(Collection.class.isAssignableFrom(toType) || toType.isArray())
            && (value.getClass().isArray() || value instanceof Collection)) {
        final Iterator it = IteratorUtils.getIterator(value);
        if (!it.hasNext()) {
            value = null;
        } else {
            value = it.next();
        }
    }

    // Check for null values
    if (value == null) {
        if (toType.isPrimitive()) {
            // On primitives, use the default value
            if (toType == Boolean.TYPE) {
                value = Boolean.FALSE;
            } else if (toType == Character.TYPE) {
                value = '\0';
            } else {
                value = 0;
            }
        } else {
            // For objects, return null
            return null;
        }
    }

    // Check if the value is already of the expected type
    if (toType.isInstance(value)) {
        return value;
    }

    // If the class is primitive, use the wrapper, so we have an easier work of testing instances
    if (toType.isPrimitive()) {
        toType = ClassUtils.primitiveToWrapper(toType);
    }

    // Convert to well-known types
    if (String.class.isAssignableFrom(toType)) {
        if (value instanceof Entity) {
            final Long entityId = ((Entity) value).getId();
            return entityId == null ? null : entityId.toString();
        }
        return value.toString();
    } else if (Number.class.isAssignableFrom(toType)) {
        if (!(value instanceof Number)) {
            if (value instanceof String) {
                value = new BigDecimal((String) value);
            } else if (value instanceof Date) {
                value = ((Date) value).getTime();
            } else if (value instanceof Calendar) {
                value = ((Calendar) value).getTimeInMillis();
            } else if (value instanceof Entity) {
                value = ((Entity) value).getId();
                if (value == null) {
                    return null;
                }
            } else {
                throw new ConversionException("Invalid number: " + value);
            }
        }
        final Number number = (Number) value;
        if (Byte.class.isAssignableFrom(toType)) {
            return number.byteValue();
        } else if (Short.class.isAssignableFrom(toType)) {
            return number.shortValue();
        } else if (Integer.class.isAssignableFrom(toType)) {
            return number.intValue();
        } else if (Long.class.isAssignableFrom(toType)) {
            return number.longValue();
        } else if (Float.class.isAssignableFrom(toType)) {
            return number.floatValue();
        } else if (Double.class.isAssignableFrom(toType)) {
            return number.doubleValue();
        } else if (BigInteger.class.isAssignableFrom(toType)) {
            return new BigInteger(number.toString());
        } else if (BigDecimal.class.isAssignableFrom(toType)) {
            return new BigDecimal(number.toString());
        }
    } else if (Boolean.class.isAssignableFrom(toType)) {
        if (value instanceof Number) {
            return ((Number) value).intValue() != 0;
        } else if ("on".equalsIgnoreCase(value.toString())) {
            return true;
        } else {
            return Boolean.parseBoolean(value.toString());
        }
    } else if (Character.class.isAssignableFrom(toType)) {
        final String str = value.toString();
        return (str.length() == 0) ? null : str.charAt(0);
    } else if (Calendar.class.isAssignableFrom(toType)) {
        if (value instanceof Date) {
            final Calendar cal = new GregorianCalendar();
            cal.setTime((Date) value);
            return cal;
        }
    } else if (Date.class.isAssignableFrom(toType)) {
        if (value instanceof Calendar) {
            final long millis = ((Calendar) value).getTimeInMillis();
            try {
                return ConstructorUtils.invokeConstructor(toType, millis);
            } catch (final Exception e) {
                throw new IllegalStateException(e);
            }
        }
    } else if (Enum.class.isAssignableFrom(toType)) {
        Object ret;
        try {
            ret = Enum.valueOf(toType, value.toString());
        } catch (final Exception e) {
            ret = null;
        }
        if (ret == null) {
            Object[] possible;
            try {
                possible = (Object[]) toType.getMethod("values").invoke(null);
            } catch (final Exception e) {
                throw new IllegalStateException(
                        "Couldn't invoke the 'values' method for enum " + toType.getName());
            }
            if (StringValuedEnum.class.isAssignableFrom(toType)) {
                final String test = coerce(String.class, value);
                for (final Object item : possible) {
                    if (((StringValuedEnum) item).getValue().equals(test)) {
                        ret = item;
                        break;
                    }
                }
            } else if (IntValuedEnum.class.isAssignableFrom(toType)) {
                final int test = coerce(Integer.TYPE, value);
                for (final Object item : possible) {
                    if (((IntValuedEnum) item).getValue() == test) {
                        ret = item;
                        break;
                    }
                }
            } else {
                throw new ConversionException("Invalid enum: " + value);
            }
        }
        return ret;
    } else if (Entity.class.isAssignableFrom(toType)) {
        final Long id = coerce(Long.class, value);
        return EntityHelper.reference(toType, id);
    } else if (Locale.class.isAssignableFrom(toType)) {
        return LocaleConverter.instance().valueOf(value.toString());
    } else if (Collection.class.isAssignableFrom(toType)) {
        final Collection collection = (Collection) ClassHelper.instantiate(toType);
        final Iterator iterator = IteratorUtils.getIterator(value);
        while (iterator.hasNext()) {
            collection.add(iterator.next());
        }
        return collection;
    } else if (toType.isArray()) {
        final Collection collection = coerceCollection(toType.getComponentType(), value);
        final Object[] array = (Object[]) Array.newInstance(toType.getComponentType(), collection.size());
        return collection.toArray(array);
    }

    // We don't know how to convert the value
    throw new ConversionException("Cannot coerce value to: " + toType.getName());
}

From source file:org.batoo.jpa.common.reflect.ReflectHelper.java

/**
 * Converts the number into number Type/*from   ww  w  . j  a  v  a 2 s.co  m*/
 * 
 * @param value
 *            the number value
 * @param numberType
 *            the number type
 * @return the converted number value
 * 
 * @since $version
 * @author hceylan
 */
public static Number convertNumber(Number value, Class<?> numberType) {
    if (numberType == Integer.class) {
        return value.intValue();
    }

    if (numberType == Long.class) {
        return value.longValue();
    }

    if (numberType == Short.class) {
        return value.shortValue();
    }

    if (numberType == Byte.class) {
        return value.byteValue();
    }

    if (numberType == Float.class) {
        return value.floatValue();
    }

    if (numberType == Double.class) {
        return value.doubleValue();
    }

    throw new IllegalArgumentException(numberType + " not supported");
}

From source file:org.briljantframework.data.vector.Convert.java

@SuppressWarnings("unchecked")
private static <T> T convertNumber(Class<T> cls, Number num) {
    if (cls.equals(Double.class) || cls.equals(Double.TYPE)) {
        return (T) (Double) num.doubleValue();
    } else if (cls.equals(Float.class) || cls.equals(Float.TYPE)) {
        return (T) (Float) num.floatValue();
    } else if (cls.equals(Long.class) || cls.equals(Long.TYPE)) {
        return (T) (Long) num.longValue();
    } else if (cls.equals(Integer.class) || cls.equals(Integer.TYPE)) {
        return (T) (Integer) num.intValue();
    } else if (cls.equals(Short.class) || cls.equals(Short.TYPE)) {
        return (T) (Short) num.shortValue();
    } else if (cls.equals(Byte.class) || cls.equals(Byte.TYPE)) {
        return (T) (Byte) num.byteValue();
    } else if (Complex.class.equals(cls)) {
        return cls.cast(Complex.valueOf(num.doubleValue()));
    } else if (Logical.class.equals(cls)) {
        return cls.cast(num.intValue() == 1 ? Logical.TRUE : Logical.FALSE);
    } else if (Boolean.class.equals(cls)) {
        return cls.cast(num.intValue() == 1);
    } else {//from  w w  w. j ava  2 s . c  o m
        return Na.of(cls);
    }
}

From source file:com.amazonaws.hal.client.ConversionUtil.java

private static Object convertFromNumber(Class<?> clazz, Number value) {
    if (String.class.isAssignableFrom(clazz)) {
        return value.toString();
    } else if (int.class.isAssignableFrom(clazz) || Integer.class.isAssignableFrom(clazz)) {
        return value.intValue();
    } else if (long.class.isAssignableFrom(clazz) || Long.class.isAssignableFrom(clazz)) {
        return value.longValue();
    } else if (short.class.isAssignableFrom(clazz) || Short.class.isAssignableFrom(clazz)) {
        return value.shortValue();
    } else if (double.class.isAssignableFrom(clazz) || Double.class.isAssignableFrom(clazz)) {
        return value.doubleValue();
    } else if (float.class.isAssignableFrom(clazz) || Float.class.isAssignableFrom(clazz)) {
        return value.floatValue();
    } else if (boolean.class.isAssignableFrom(clazz) || Boolean.class.isAssignableFrom(clazz)) {
        return Boolean.valueOf(value.toString());
    } else if (char.class.isAssignableFrom(clazz) || Character.class.isAssignableFrom(clazz)) {
        if (value.longValue() <= 255) {
            return (char) value.longValue();
        } else {//from w  w w.j a  v  a 2 s.c  o  m
            throw new RuntimeException("Not sure how to convert " + value + " to a " + clazz.getSimpleName());
        }
    } else if (byte.class.isAssignableFrom(clazz) || Byte.class.isAssignableFrom(clazz)) {
        return value.byteValue();
    } else if (BigDecimal.class.isAssignableFrom(clazz)) {
        return new BigDecimal(value.toString());
    } else if (BigInteger.class.isAssignableFrom(clazz)) {
        // Necessary because BigInteger(long) is a private method and we need to convert the Number to a long to
        // prevent the constructor from throwing a NumberFormatException Example: BigInteger(1.2)
        return new BigInteger(String.valueOf(value.longValue()));
    } else if (Date.class.isAssignableFrom(clazz)) {
        return new Date(value.longValue());
    } else if (clazz.isEnum()) {
        try {
            //noinspection unchecked
            return Enum.valueOf((Class<Enum>) clazz, value.toString());
        } catch (IllegalArgumentException e) {
            log.error(String.format(
                    "'%s' is not a recognized enum value for %s.  Returning default of %s instead.", value,
                    clazz.getName(), clazz.getEnumConstants()[0]));

            return clazz.getEnumConstants()[0];
        }
    } else {
        throw new RuntimeException("Not sure how to convert " + value + " to a " + clazz.getSimpleName());
    }
}

From source file:voldemort.VoldemortClientShell.java

@SuppressWarnings("unchecked")
protected static Object tightenNumericTypes(Object o) {
    if (o == null) {
        return null;
    } else if (o instanceof List) {
        List l = (List) o;
        for (int i = 0; i < l.size(); i++)
            l.set(i, tightenNumericTypes(l.get(i)));
        return l;
    } else if (o instanceof Map) {
        Map m = (Map) o;// w  w w.  j  av  a  2 s .c om
        for (Map.Entry entry : (Set<Map.Entry>) m.entrySet())
            m.put(entry.getKey(), tightenNumericTypes(entry.getValue()));
        return m;
    } else if (o instanceof Number) {
        Number n = (Number) o;
        if (o instanceof Integer) {
            if (n.intValue() < Byte.MAX_VALUE)
                return n.byteValue();
            else if (n.intValue() < Short.MAX_VALUE)
                return n.shortValue();
            else
                return n;
        } else if (o instanceof Double) {
            if (n.doubleValue() < Float.MAX_VALUE)
                return n.floatValue();
            else
                return n;
        } else {
            throw new RuntimeException("Unsupported numeric type: " + o.getClass());
        }
    } else {
        return o;
    }
}

From source file:com.jeeframework.util.validate.GenericTypeValidator.java

/**
 *  Checks if the value can safely be converted to a short primitive.
 *
 *@param  value   The value validation is being performed on.
 *@param  locale  The locale to use to parse the number (system default if
 *      null)vv//from  ww w.  j av  a2 s.  c  om
 *@return the converted Short value.
 */
public static Short formatShort(String value, Locale locale) {
    Short result = null;

    if (value != null) {
        NumberFormat formatter = null;
        if (locale != null) {
            formatter = NumberFormat.getNumberInstance(locale);
        } else {
            formatter = NumberFormat.getNumberInstance(Locale.getDefault());
        }
        formatter.setParseIntegerOnly(true);
        ParsePosition pos = new ParsePosition(0);
        Number num = formatter.parse(value, pos);

        // If there was no error      and we used the whole string
        if (pos.getErrorIndex() == -1 && pos.getIndex() == value.length()) {
            if (num.doubleValue() >= Short.MIN_VALUE && num.doubleValue() <= Short.MAX_VALUE) {
                result = new Short(num.shortValue());
            }
        }
    }

    return result;
}

From source file:org.lingcloud.molva.ocl.util.GenericTypeValidator.java

/**
 * Checks if the value can safely be converted to a short primitive.
 * /* w ww  .  j a  va2s.  co  m*/
 * @param value
 *            The value validation is being performed on.
 * @param locale
 *            The locale to use to parse the number (system default if
 *            null)vv
 * @return the converted Short value.
 */
public static Short formatShort(String value, Locale locale) {
    Short result = null;

    if (value != null) {
        NumberFormat formatter = null;
        if (locale != null) {
            formatter = NumberFormat.getNumberInstance(locale);
        } else {
            formatter = NumberFormat.getNumberInstance(Locale.getDefault());
        }
        formatter.setParseIntegerOnly(true);
        ParsePosition pos = new ParsePosition(0);
        Number num = formatter.parse(value, pos);

        // If there was no error and we used the whole string
        if (pos.getErrorIndex() == -1 && pos.getIndex() == value.length()) {
            if (num.doubleValue() >= Short.MIN_VALUE && num.doubleValue() <= Short.MAX_VALUE) {
                result = Short.valueOf(num.shortValue());
            }
        }
    }

    return result;
}

From source file:net.yck.wkrdb.common.shared.PropertyConverter.java

/**
 * Convert the specified object into a Short.
 *
 * @param value//  w w  w. j a v  a2  s . c om
 *            the value to convert
 * @return the converted value
 * @throws ConversionException
 *             thrown if the value cannot be converted to a short
 */
public static Short toShort(Object value) throws ConversionException {
    Number n = toNumber(value, Short.class);
    if (n instanceof Short) {
        return (Short) n;
    } else {
        return n.shortValue();
    }
}

From source file:easyJ.common.validate.GenericTypeValidator.java

/**
 * Checks if the value can safely be converted to a short primitive.
 * //from   w  ww  .  j  a va 2  s . com
 * @param value
 *                The value validation is being performed on.
 * @param locale
 *                The locale to use to parse the number (system default if
 *                null)vv
 * @return the converted Short value.
 */
public static Short formatShort(String value, Locale locale) {
    Short result = null;

    if (value != null) {
        NumberFormat formatter = null;
        if (locale != null) {
            formatter = NumberFormat.getNumberInstance(locale);
        } else {
            formatter = NumberFormat.getNumberInstance(Locale.getDefault());
        }
        formatter.setParseIntegerOnly(true);
        ParsePosition pos = new ParsePosition(0);
        Number num = formatter.parse(value, pos);

        // If there was no error and we used the whole string
        if (pos.getErrorIndex() == -1 && pos.getIndex() == value.length()) {
            if (num.doubleValue() >= Short.MIN_VALUE && num.doubleValue() <= Short.MAX_VALUE) {
                result = new Short(num.shortValue());
            }
        }
    }

    return result;
}