本文整理了Java中org.apache.sis.util.Numbers类的一些代码示例，展示了Numbers类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Numbers类的具体详情如下：
包路径：org.apache.sis.util.Numbers
类名称：Numbers
[英]Static methods working with Number objects, and a few primitive types by extension.
[中]静态方法处理数字对象，以及扩展的一些基本类型。
代码示例来源：origin: org.apache.sis.core/sis-metadata
/**
* Returns the kind of value provided in the extended element.
* This is a generic code that describe the element type.
* For more accurate information, see {@link #getElementType()}.
*/
@Override
public Datatype getDataType() {
if (CharSequence.class.isAssignableFrom(elementType)) return Datatype.CHARACTER_STRING;
if (CodeList .class.isAssignableFrom(elementType)) return Datatype.CODE_LIST;
if (Enum .class.isAssignableFrom(elementType)) return Datatype.ENUMERATION;
if (Numbers.isInteger(elementType)) {
return Datatype.INTEGER;
}
// TODO: check the org.opengis.annotation.Classifier annotation here.
return Datatype.TYPE_CLASS;
}代码示例来源：origin: org.apache.sis.core/sis-utility
/**
* Returns the elements of the given collection as an array. This method can be used when the {@code valueClass}
* argument is not known at compile-time. If the {@code valueClass} is known at compile-time, then callers should
* use {@link Collection#toArray(Object[])} instead.
*
* @param <T> the compile-time value of {@code valueClass}.
* @param collection the collection from which to get the elements.
* @param valueClass the runtime type of collection elements.
* @return the collection elements as an array, or {@code null} if {@code collection} is null.
*
* @since 0.6
*/
@SuppressWarnings("unchecked")
public static <T> T[] toArray(final Collection<T> collection, final Class<T> valueClass) {
assert Numbers.primitiveToWrapper(valueClass) == valueClass : valueClass;
if (collection != null) {
return collection.toArray((T[]) Array.newInstance(valueClass, collection.size()));
}
return null;
}代码示例来源：origin: org.apache.sis.core/sis-utility
return false;
final Class<? extends Number> type = Numbers.widestClass(elementType, value.getClass());
value = Numbers.cast(value, type);
if (minValue != null) {
@SuppressWarnings("unchecked")
final int c = ((Comparable) Numbers.cast(minValue, type)).compareTo(value);
if (isMinIncluded ? (c > 0) : (c >= 0)) {
return false;
final int c = ((Comparable) Numbers.cast(maxValue, type)).compareTo(value);
if (isMaxIncluded ? (c < 0) : (c <= 0)) {
return false;代码示例来源：origin: org.apache.sis.core/sis-utility
/**
* Parses the given string. Callers shall catch the {@link NumberFormatException}
* and handle the error according the caller's method contract.
*
* @throws NumberFormatException if the parsing failed.
*/
private Object valueOf(final String source) throws NumberFormatException {
return (type != Number.class) ? Numbers.valueOf(source, type) : Numbers.narrowestNumber(source);
}代码示例来源：origin: org.apache.sis.core/sis-utility
/**
* Verifies that a value of the given type can be casted to the expected type.
* The expected type must be one of the {@link Numbers} constants.
*/
final void verifyType(final Class<? extends Number> type, final byte expected) {
final byte t = Numbers.getEnumConstant(type);
if (t < Numbers.BYTE || t > expected) {
throw new ClassCastException(Errors.format(Errors.Keys.CanNotConvertFromType_2,
type, Numbers.wrapperToPrimitive(getElementType())));
}
}代码示例来源：origin: org.apache.sis.core/sis-referencing
if (value instanceof Number) {
final Number n = (Number) value;
if (Numbers.isInteger(n.getClass())) {
final int xmlValue = n.intValue();
if (xmlValue >= 0 && xmlValue == n.doubleValue()) {
return ObjectConverters.convert(value, URI.class);
final Class<?> type = Numbers.primitiveToWrapper(value.getClass().getComponentType());
if (type != null && Number.class.isAssignableFrom(type)) {
if (Numbers.isInteger(type)) {
return new IntegerList(value);代码示例来源：origin: org.apache.sis.core/sis-utility
/**
* Constructs a range using the smallest type of {@link Number} that can hold the given values.
* This method performs the same work than {@link NumberRange#createBestFit
* NumberRange.createBestFit(…)} with an additional {@code unit} argument.
*
* <p>This method may return a shared instance, at implementation choice.</p>
*
* @param minValue the minimal value, or {@code null} if none.
* @param isMinIncluded {@code true} if the minimal value is inclusive, or {@code false} if exclusive.
* @param maxValue the maximal value, or {@code null} if none.
* @param isMaxIncluded {@code true} if the maximal value is inclusive, or {@code false} if exclusive.
* @param unit the unit of measurement, or {@code null} if unknown.
* @return the new range, or {@code null} if both {@code minValue} and {@code maxValue} are {@code null}.
*
* @see NumberRange#createBestFit(Number, boolean, Number, boolean)
*/
@SuppressWarnings({"rawtypes","unchecked"})
public static MeasurementRange<?> createBestFit(final Number minValue, final boolean isMinIncluded,
final Number maxValue, final boolean isMaxIncluded, final Unit<?> unit)
{
final Class<? extends Number> type = Numbers.widestClass(
Numbers.narrowestClass(minValue), Numbers.narrowestClass(maxValue));
if (type == null) {
return null;
}
return unique(new MeasurementRange(type,
Numbers.cast(minValue, type), isMinIncluded,
Numbers.cast(maxValue, type), isMaxIncluded, unit));
}代码示例来源：origin: apache/sis
/**
* Constructs a range with the same values than the specified range, casted to the specified type.
*
* @param type the element type, usually one of {@link Byte}, {@link Short},
* {@link Integer}, {@link Long}, {@link Float} or {@link Double}.
* @param range the range to copy. The elements must be {@link Number} instances.
* @throws IllegalArgumentException if the given type is not one of the primitive wrappers for numeric types.
*/
NumberRange(final Class<E> type, final Range<? extends Number> range)
throws IllegalArgumentException
{
super(type, Numbers.cast(range.minValue, type), range.isMinIncluded,
Numbers.cast(range.maxValue, type), range.isMaxIncluded);
}代码示例来源：origin: org.apache.sis.core/sis-utility
/** Returns the increment between all consecutive values */
@Override public Number increment(final double tolerance) {
return Numbers.wrap(increment, type);
}代码示例来源：origin: org.apache.sis.core/sis-utility
/**
* Declares this converter as a injective or surjective function,
* depending on whether conversions loose information or not.
*/
@Override
public Set<FunctionProperty> properties() {
return EnumSet.of(Numbers.widestClass(sourceClass, targetClass) == targetClass
? FunctionProperty.INJECTIVE : FunctionProperty.SURJECTIVE,
FunctionProperty.ORDER_PRESERVING, FunctionProperty.INVERTIBLE);
}代码示例来源：origin: org.apache.sis.core/sis-utility
final boolean tb = minInc; minInc = maxInc; maxInc = tb;
if (Numbers.isInteger(type)) {
minInc &= (minimum == (minimum = Math.floor(minimum)));
maxInc &= (maximum == (maximum = Math.ceil (maximum)));
Numbers.cast(minimum, type), minInc,
Numbers.cast(maximum, type), maxInc, targetUnit);代码示例来源：origin: apache/sis
newValues[0] = Numbers.valueOfNil(targetType);
targetType = Numbers.primitiveToWrapper(targetType);
} else {代码示例来源：origin: org.apache.sis.core/sis-utility
/**
* Returns {@code true} if the given type is one of the types supported
* by {@link NumberConverter}.
*/
private static boolean isSupportedNumber(final Class<?> type) {
final int code = Numbers.getEnumConstant(type);
return (code >= Numbers.BYTE && code <= Numbers.BIG_DECIMAL);
}
}代码示例来源：origin: org.apache.sis.core/sis-utility
baseValueClass = (baseValueClass != null) ? Numbers.wrapperToPrimitive(baseValueClass) : Object.class;
return types;代码示例来源：origin: org.apache.sis.core/sis-utility
switch (getEnumConstant(type)) {
case BYTE: number = (N) Byte .valueOf((byte) value); break;
case SHORT: number = (N) Short .valueOf((short) value); break;
case BIG_INTEGER: number = (N) BigInteger.valueOf((long) value); break;
case BIG_DECIMAL: return (N) BigDecimal.valueOf(value); // No need to verify.
default: throw unknownType(type);代码示例来源：origin: org.apache.sis.core/sis-utility
/**
* Converts the given number to a {@code Comparable} if its type is different.
*/
@Override
public java.lang.Comparable<?> apply(final Number source) {
if (source == null || source instanceof java.lang.Comparable<?>) {
return (java.lang.Comparable<?>) source;
}
return (java.lang.Comparable<?>) Numbers.narrowestNumber(source);
}
}代码示例来源：origin: org.apache.sis.core/sis-utility
/**
* Returns a "nil" value. This is used for creating empty ranges.
*/
private Object valueOfNil() {
Object value = Numbers.valueOfNil(elementType);
if (value == null) {
if (Date.class.isAssignableFrom(elementType)) {
value = new Date();
} else {
value = 0;
}
}
return convert(value);
}代码示例来源：origin: apache/sis
/**
* Tests {@link Numbers#isFloat(Class)}.
*/
@Test
public void testIsFloat() {
assertFalse(isFloat(Byte .TYPE));
assertFalse(isFloat(Short .TYPE));
assertFalse(isFloat(Integer .TYPE));
assertFalse(isFloat(Long .TYPE));
assertTrue (isFloat(Float .TYPE));
assertTrue (isFloat(Double .TYPE));
assertFalse(isFloat(Byte .class));
assertFalse(isFloat(Short .class));
assertFalse(isFloat(Integer .class));
assertFalse(isFloat(Long .class));
assertTrue (isFloat(Float .class));
assertTrue (isFloat(Double .class));
assertFalse(isFloat(String .class));
assertFalse(isFloat(Character.class));
}代码示例来源：origin: apache/sis
if (value instanceof Number) {
final Number n = (Number) value;
if (Numbers.isInteger(n.getClass())) {
final int xmlValue = n.intValue();
if (xmlValue >= 0 && xmlValue == n.doubleValue()) {
return ObjectConverters.convert(value, URI.class);
final Class<?> type = Numbers.primitiveToWrapper(value.getClass().getComponentType());
if (type != null && Number.class.isAssignableFrom(type)) {
if (Numbers.isInteger(type)) {
return new IntegerList(value);代码示例来源：origin: org.apache.sis.core/sis-utility
/**
* Constructs a range with the same values than the specified range, casted to the specified type.
*
* @param type the element type, usually one of {@link Byte}, {@link Short},
* {@link Integer}, {@link Long}, {@link Float} or {@link Double}.
* @param range the range to copy. The elements must be {@link Number} instances.
* @throws IllegalArgumentException if the given type is not one of the primitive wrappers for numeric types.
*/
NumberRange(final Class<E> type, final Range<? extends Number> range)
throws IllegalArgumentException
{
super(type, Numbers.cast(range.minValue, type), range.isMinIncluded,
Numbers.cast(range.maxValue, type), range.isMaxIncluded);
}内容来源于网络，如有侵权，请联系作者删除！