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.
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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 thatn
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 thatn
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 thatstringValue
stores or throws an exception if the stored value cannot be converted to a long that stores the exact same value andcoerce
is false.static long
toLongExact(java.lang.Number n)
Return the long thatn
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 thatn
stores, or throws an exception if the stored value cannot be converted to a short that stores the exact same value.
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Method Details
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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
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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
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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
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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 thatn
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 thatstringValue
stores or throws an exception if the stored value cannot be converted to a long that stores the exact same value andcoerce
is false. -
toIntExact
public static int toIntExact(java.lang.Number n)Return the int thatn
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 thatn
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 thatn
stores, or throws an exception if the stored value cannot be converted to a byte that stores the exact same value.
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