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 long bytesToLong​(org.apache.lucene.util.BytesRef bytes)  
    static byte[] doubleToBytes​(double val)
    Converts a double to a byte array.
    static byte[] intToBytes​(int val)  
    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 Details

    • 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​(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.