org.opentripplanner.util

Class BitSetUtils

java.lang.Object

org.opentripplanner.util.BitSetUtils

public final class BitSetUtils
extends Object

A compact bit set utility class. It rely on the client to store the bit set himself (either as a byte, short, int or long, depending on the amount of bits needed), to prevent having to store a reference and create another heavy object instance such as with the BitSet class. Usage is rather simple:

 
 short flags; // or int, long, byte
 
 public boolean isFooBar() {
     return BitSetUtils.get(flags, FOOBAR_INDEX);
 }
 
 public void setFooBar(boolean foobar) {
     flags = BitSetUtils.set(flags, FOOBAR_INDEX, foobar);
 }
 
 

Author:

laurent

Constructor Summary

Constructors

Constructor and Description
BitSetUtils()

Method Summary

Modifier and Type	Method and Description
static boolean	get(byte bitset, int index)
static boolean	get(int bitset, int index)
static boolean	get(long bitset, int index)
static boolean	get(short bitset, int index)
static byte	set(byte bitset, int index, boolean value)
static int	set(int bitset, int index, boolean value)
static long	set(long bitset, int index, boolean value)
static short	set(short bitset, int index, boolean value)

Methods inherited from class java.lang.Object

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

Constructor Detail

BitSetUtils

public BitSetUtils()

Method Detail

get

public static final boolean get(byte bitset,
                                int index)

set

public static final byte set(byte bitset,
                             int index,
                             boolean value)

get

public static final boolean get(short bitset,
                                int index)

set

public static final short set(short bitset,
                              int index,
                              boolean value)

get

public static final boolean get(int bitset,
                                int index)

set

public static final int set(int bitset,
                            int index,
                            boolean value)

get

public static final boolean get(long bitset,
                                int index)

set

public static final long set(long bitset,
                             int index,
                             boolean value)