Package org.elasticsearch.common

Class Numbers

java.lang.Object

org.elasticsearch.common.Numbers

public final class Numbers
extends java.lang.Object

A set of utilities for numbers.

Method Summary

Modifier and Type	Method	Description
static double	bytesToDouble(byte[] arr)	Converts a byte array to double.
static double	bytesToDouble(org.apache.lucene.util.BytesRef bytes)
static float	bytesToFloat(byte[] arr)	Converts a byte array to float.
static float	bytesToFloat(org.apache.lucene.util.BytesRef bytes)
static int	bytesToInt(byte[] arr)	Converts a byte array to an int.
static int	bytesToInt(org.apache.lucene.util.BytesRef bytes)
static long	bytesToLong(byte[] arr)	Converts a byte array to a long.
static long	bytesToLong(org.apache.lucene.util.BytesRef bytes)
static short	bytesToShort(byte[] arr)	Converts a byte array to an short.
static short	bytesToShort(org.apache.lucene.util.BytesRef bytes)
static byte[]	doubleToBytes(double val)	Converts a double to a byte array.
static byte[]	floatToBytes(float val)	Converts a float to a byte array.
static byte[]	intToBytes(int val)	Converts an int to a byte array.
static boolean	isValidDouble(double value)	Returns true if value is neither NaN nor infinite.
static byte[]	longToBytes(long val)	Converts a long to a byte array.
static byte[]	shortToBytes(int val)	Converts an int to a byte array.
static byte	toByteExact(java.lang.Number n)	Return the byte that n stores, or throws an exception if the stored value cannot be converted to a byte that stores the exact same value.
static int	toIntExact(java.lang.Number n)	Return the int that n stores, or throws an exception if the stored value cannot be converted to an int that stores the exact same value.
static long	toLong(java.lang.String stringValue, boolean coerce)	Return the long that stringValue stores or throws an exception if the stored value cannot be converted to a long that stores the exact same value and coerce is false.
static long	toLongExact(java.lang.Number n)	Return the long that n stores, or throws an exception if the stored value cannot be converted to a long that stores the exact same value.
static short	toShortExact(java.lang.Number n)	Return the short that n stores, or throws an exception if the stored value cannot be converted to a short that stores the exact same value.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

bytesToShort

public static short bytesToShort(byte[] arr)

Converts a byte array to an short.

Parameters:

arr - The byte array to convert to an short

Returns:

The int converted

bytesToShort

public static short bytesToShort(org.apache.lucene.util.BytesRef bytes)

bytesToInt

public static int bytesToInt(byte[] arr)

Converts a byte array to an int.

Parameters:

arr - The byte array to convert to an int

Returns:

The int converted

bytesToInt

public static int bytesToInt(org.apache.lucene.util.BytesRef bytes)

bytesToLong

public static long bytesToLong(byte[] arr)

Converts a byte array to a long.

Parameters:

arr - The byte array to convert to a long

Returns:

The long converter

bytesToLong

public static long bytesToLong(org.apache.lucene.util.BytesRef bytes)

bytesToFloat

public static float bytesToFloat(byte[] arr)

Converts a byte array to float.

Parameters:

arr - The byte array to convert to a float

Returns:

The float converted

bytesToFloat

public static float bytesToFloat(org.apache.lucene.util.BytesRef bytes)

bytesToDouble

public static double bytesToDouble(byte[] arr)

Converts a byte array to double.

Parameters:

arr - The byte array to convert to a double

Returns:

The double converted

bytesToDouble

public static double bytesToDouble(org.apache.lucene.util.BytesRef bytes)

intToBytes

public static byte[] intToBytes(int val)

Converts an int to a byte array.

Parameters:

val - The int to convert to a byte array

Returns:

The byte array converted

shortToBytes

public static byte[] shortToBytes(int val)

Converts an int to a byte array.

Parameters:

val - The int to convert to a byte array

Returns:

The byte array converted

longToBytes

public static byte[] longToBytes(long val)

Converts a long to a byte array.

Parameters:

val - The long to convert to a byte array

Returns:

The byte array converted

floatToBytes

public static byte[] floatToBytes(float val)

Converts a float to a byte array.

Parameters:

val - The float to convert to a byte array

Returns:

The byte array converted

doubleToBytes

public static byte[] doubleToBytes(double val)

Converts a double to a byte array.

Parameters:

val - The double to convert to a byte array

Returns:

The byte array converted

isValidDouble

public static boolean isValidDouble(double value)

Returns true if value is neither NaN nor infinite.

toLongExact

public static long toLongExact(java.lang.Number n)

Return the long that n stores, or throws an exception if the stored value cannot be converted to a long that stores the exact same value.

toLong

public static long toLong(java.lang.String stringValue,
                          boolean coerce)

Return the long that stringValue stores or throws an exception if the stored value cannot be converted to a long that stores the exact same value and coerce is false.

toIntExact

public static int toIntExact(java.lang.Number n)

Return the int that n stores, or throws an exception if the stored value cannot be converted to an int that stores the exact same value.

toShortExact

public static short toShortExact(java.lang.Number n)

Return the short that n stores, or throws an exception if the stored value cannot be converted to a short that stores the exact same value.

toByteExact

public static byte toByteExact(java.lang.Number n)

Return the byte that n stores, or throws an exception if the stored value cannot be converted to a byte that stores the exact same value.