org.ardverk.collection
Class CharArrayKeyAnalyzer

java.lang.Object
  extended by org.ardverk.collection.AbstractKeyAnalyzer<char[]>
      extended by org.ardverk.collection.CharArrayKeyAnalyzer
All Implemented Interfaces:
java.io.Serializable, java.util.Comparator<char[]>, KeyAnalyzer<char[]>

public class CharArrayKeyAnalyzer
extends AbstractKeyAnalyzer<char[]>

An KeyAnalyzer for char[]s

See Also:
Serialized Form

Field Summary
static CharArrayKeyAnalyzer INSTANCE
          A singleton instance of CharArrayKeyAnalyzer
static int LENGTH
          The number of bits per Character
 
Fields inherited from interface org.ardverk.collection.KeyAnalyzer
EQUAL_BIT_KEY, NULL_BIT_KEY, OUT_OF_BOUNDS_BIT_KEY
 
Constructor Summary
CharArrayKeyAnalyzer()
           
 
Method Summary
 int bitIndex(char[] key, int offsetInBits, int lengthInBits, char[] other, int otherOffsetInBits, int otherLengthInBits)
          Returns the n-th different bit between key and found.
 int bitsPerElement()
          Returns the number of bits per element in the key.
 boolean isBitSet(char[] key, int bitIndex, int lengthInBits)
          Returns whether or not a bit is set
 boolean isPrefix(char[] prefix, int offsetInBits, int lengthInBits, char[] key)
          Determines whether or not the given prefix (from offset to length) is a prefix of the given key.
 int lengthInBits(char[] key)
          Returns the length of the Key in bits.
 
Methods inherited from class org.ardverk.collection.AbstractKeyAnalyzer
compare
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 
Methods inherited from interface java.util.Comparator
equals
 

Field Detail

INSTANCE

public static final CharArrayKeyAnalyzer INSTANCE
A singleton instance of CharArrayKeyAnalyzer


LENGTH

public static final int LENGTH
The number of bits per Character

See Also:
Constant Field Values
Constructor Detail

CharArrayKeyAnalyzer

public CharArrayKeyAnalyzer()
Method Detail

bitsPerElement

public int bitsPerElement()
Returns the number of bits per element in the key. This is only useful for variable-length keys, such as Strings.


lengthInBits

public int lengthInBits(char[] key)
Returns the length of the Key in bits.


bitIndex

public int bitIndex(char[] key,
                    int offsetInBits,
                    int lengthInBits,
                    char[] other,
                    int otherOffsetInBits,
                    int otherLengthInBits)
Returns the n-th different bit between key and found. This starts the comparison in key at 'keyStart' and goes for 'keyLength' bits, and compares to the found key starting at 'foundStart' and going for 'foundLength' bits.


isBitSet

public boolean isBitSet(char[] key,
                        int bitIndex,
                        int lengthInBits)
Returns whether or not a bit is set


isPrefix

public boolean isPrefix(char[] prefix,
                        int offsetInBits,
                        int lengthInBits,
                        char[] key)
Determines whether or not the given prefix (from offset to length) is a prefix of the given key.



Copyright © 2005-2009 Roger Kapsi, Sam Berlin. All Rights Reserved.