Package com.oracle.coherence.common.base

Class HashHelper

java.lang.Object

com.oracle.coherence.common.base.HashHelper

public abstract class HashHelper
extends Object

This abstract class contains helper functions for calculating hash code values for any group of java intrinsics.

Version:

1.00, 04/25/00

Author:

pm

Constructor Summary

Constructors

Constructor	Description
HashHelper()

Method Summary

Modifier and Type	Method	Description
static int	hash(boolean[] value, int hash)	Calculate a running hash using the boolean array value.
static int	hash(boolean value, int hash)	Calculate a running hash using the boolean value.
static int	hash(byte[] value, int hash)	Calculate a running hash using the byte array value.
static int	hash(byte value, int hash)	Calculate a running hash using the byte value.
static int	hash(char[] value, int hash)	Calculate a running hash using the char array value.
static int	hash(char value, int hash)	Calculate a running hash using the char value.
static int	hash(double[] value, int hash)	Calculate a running hash using the double array value.
static int	hash(double value, int hash)	Calculate a running hash using the double value.
static int	hash(float[] value, int hash)	Calculate a running hash using the float array value.
static int	hash(float value, int hash)	Calculate a running hash using the float value.
static int	hash(int[] value, int hash)	Calculate a running hash using the int array value.
static int	hash(int value, int hash)	Calculate a running hash using the int value.
static int	hash(long[] value, int hash)	Calculate a running hash using the long array value.
static int	hash(long value, int hash)	Calculate a running hash using the long value.
static int	hash(short[] value, int hash)	Calculate a running hash using the short array value.
static int	hash(short value, int hash)	Calculate a running hash using the short value.
static int	hash(Object[] value, int hash)	Calculate a running hash using the Object array value.
static int	hash(Object value, int hash)	Calculate a running hash using the Object value.
static String	hash(String s)	Shift the value into a different charset order.
static int	hash(Collection col, int hash)	Calculate a running hash using the Collection value.
static int	hashCode(Object o)	Return the hash code for the supplied object or 0 for null.

Methods inherited from class java.lang.Object

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

Constructor Detail

HashHelper

public HashHelper()

Method Detail

hash

public static int hash(boolean value,
                       int hash)

Calculate a running hash using the boolean value.

Parameters:

value - the boolean value for use in the hash

hash - the running hash value

Returns:

the resulting running hash value

hash

public static int hash(byte value,
                       int hash)

Calculate a running hash using the byte value.

Parameters:

value - the byte value for use in the hash

hash - the running hash value

Returns:

the resulting running hash value

hash

public static int hash(char value,
                       int hash)

Calculate a running hash using the char value.

Parameters:

value - the char value for use in the hash

hash - the running hash value

Returns:

the resulting running hash value

hash

public static int hash(double value,
                       int hash)

Calculate a running hash using the double value.

Parameters:

value - the double value for use in the hash

hash - the running hash value

Returns:

the resulting running hash value

hash

public static int hash(float value,
                       int hash)

Calculate a running hash using the float value.

Parameters:

value - the float value for use in the hash

hash - the running hash value

Returns:

the resulting running hash value

hash

public static int hash(int value,
                       int hash)

Calculate a running hash using the int value.

Parameters:

value - the int value for use in the hash

hash - the running hash value

Returns:

the resulting running hash value

hash

public static int hash(long value,
                       int hash)

Calculate a running hash using the long value.

Parameters:

value - the long value for use in the hash

hash - the running hash value

Returns:

the resulting running hash value

hash

public static int hash(short value,
                       int hash)

Calculate a running hash using the short value.

Parameters:

value - the short value for use in the hash

hash - the running hash value

Returns:

the resulting running hash value

hash

public static int hash(Object value,
                       int hash)

Calculate a running hash using the Object value.

Parameters:

value - the Object value for use in the hash

hash - the running hash value

Returns:

the resulting running hash value

hash

public static int hash(boolean[] value,
                       int hash)

Calculate a running hash using the boolean array value.

Parameters:

value - the boolean array value for use in the hash

hash - the running hash value

Returns:

the resulting running hash value

hash

public static int hash(byte[] value,
                       int hash)

Calculate a running hash using the byte array value.

Parameters:

value - the byte array value for use in the hash

hash - the running hash value

Returns:

the resulting running hash value

hash

public static int hash(char[] value,
                       int hash)

Calculate a running hash using the char array value.

Parameters:

value - the char array value for use in the hash

hash - the running hash value

Returns:

the resulting running hash value

hash

public static int hash(double[] value,
                       int hash)

Calculate a running hash using the double array value.

Parameters:

value - the double array value for use in the hash

hash - the running hash value

Returns:

the resulting running hash value

hash

public static int hash(float[] value,
                       int hash)

Calculate a running hash using the float array value.

Parameters:

value - the float array value for use in the hash

hash - the running hash value

Returns:

the resulting running hash value

hash

public static int hash(int[] value,
                       int hash)

Calculate a running hash using the int array value.

Parameters:

value - the int array value for use in the hash

hash - the running hash value

Returns:

the resulting running hash value

hash

public static int hash(long[] value,
                       int hash)

Calculate a running hash using the long array value.

Parameters:

value - the long array value for use in the hash

hash - the running hash value

Returns:

the resulting running hash value

hash

public static int hash(short[] value,
                       int hash)

Calculate a running hash using the short array value.

Parameters:

value - the short array value for use in the hash

hash - the running hash value

Returns:

the resulting running hash value

hash

public static int hash(Object[] value,
                       int hash)

Calculate a running hash using the Object array value.

Parameters:

value - the Object array value for use in the hash

hash - the running hash value

Returns:

the resulting running hash value

hash

public static int hash(Collection col,
                       int hash)

Calculate a running hash using the Collection value. The hash computed over the Collection's entries is order-independent.

Parameters:

col - the Collection value for use in the hash

hash - the running hash value

Returns:

the resulting running hash value

hash

public static String hash(String s)

Shift the value into a different charset order.

Parameters:

s - a String

Returns:

a String with a different charset ordering

hashCode

public static int hashCode(Object o)

Return the hash code for the supplied object or 0 for null.

Parameters:

o - the object to hash

Returns:

the hash code for the supplied object