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com.tangosol.util
Class HashHelper

java.lang.Object
com.tangosol.util.HashHelper

public abstract class HashHelper

extends java.lang.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

HashHelper()

Method Summary

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(java.util.Collection col, int hash) Calculate a running hash using the Collection 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(java.lang.Object[] value, int hash) Calculate a running hash using the Object array value.
static int	hash(java.lang.Object value, int hash) Calculate a running hash using the Object 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 java.lang.String	hash(java.lang.String s) Shift the value into a different charset order.

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(java.lang.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(java.lang.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(java.util.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 java.lang.String hash(java.lang.String s)

Shift the value into a different charset order.

Parameters:

s - a String

Returns:

a String with a different charset ordering

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