Package org.elasticsearch.common

Class Numbers

java.lang.Object
org.elasticsearch.common.Numbers
public final class Numbers extends Object
A set of utilities for numbers.

  • Method Summary

    Modifier and Type
    Method
    Description
    static int
    bytesToInt(byte[] bytes, int offset)
     
    static long
    bytesToLong(byte[] bytes, int offset)
     
    static long
    bytesToLong(org.apache.lucene.util.BytesRef bytes)
     
    static short
    bytesToShort(byte[] bytes, int offset)
     
    static byte[]
    doubleToBytes(double val)
    Converts a double to a byte array.
    static byte[]
    intToBytes(int val)
     
    static boolean
    isPositiveNumeric(String string)
    Checks if the given string can be parsed as a positive integer value.
    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(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(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(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(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(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 Details

    • bytesToShort

      public static short bytesToShort(byte[] bytes, int offset)

    • bytesToInt

      public static int bytesToInt(byte[] bytes, int offset)

    • bytesToLong

      public static long bytesToLong(byte[] bytes, int offset)

    • bytesToLong

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

    • intToBytes

      public static byte[] intToBytes(int val)

    • 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

    • 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(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(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(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(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(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.

    • isPositiveNumeric

      public static boolean isPositiveNumeric(String string)
      Checks if the given string can be parsed as a positive integer value.