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Java Source Code / Java Documentation » Scripting » Kawa » gnu.kawa.util 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   gnu.kawa.util.GeneralHashTable

All known Subclasses:   gnu.expr.NameLookup,
GeneralHashTable
public class GeneralHashTable (Code)
A generic hash table. Supports deletions, and re-allocates the table when too big. The equivalence relation can be customized.


Field Summary
protected  intmask
    
protected  intnum_bindings
    
protected  HashNode[]table
    

Constructor Summary
public  GeneralHashTable()
    
public  GeneralHashTable(int capacity)
    

Method Summary
public  voidclear()
    
public  Objectget(Object key, Object defaultValue)
    
public  HashNodegetNode(Object key)
    
public  inthash(Object key)
     Calculate hash code of a key.
public  inthash(HashNode node)
    
protected  HashNodemakeEntry(Object key, int hash, Object value)
     Allocate a new node in the hash table.
public  booleanmatches(Object key, int hash, HashNode node)
    
public  booleanmatches(Object value1, Object value2)
     Compare two keys for equivalence.
protected static  HashNodenext(HashNode node)
    
public  Objectput(Object key, Object value)
    
public  Objectput(Object key, int hash, Object value)
    
protected  voidrehash()
    
public  Objectremove(Object key)
    
public  intsize()
    

Field Detail
mask
protected int mask(Code)



num_bindings
protected int num_bindings(Code)



table
protected HashNode[] table(Code)




Constructor Detail
GeneralHashTable
public GeneralHashTable()(Code)



GeneralHashTable
public GeneralHashTable(int capacity)(Code)




Method Detail
clear
public void clear()(Code)



get
public Object get(Object key, Object defaultValue)(Code)



getNode
public HashNode getNode(Object key)(Code)



hash
public int hash(Object key)(Code)
Calculate hash code of a key. You may need to override this if you override the matches method.



hash
public int hash(HashNode node)(Code)



makeEntry
protected HashNode makeEntry(Object key, int hash, Object value)(Code)
Allocate a new node in the hash table.



matches
public boolean matches(Object key, int hash, HashNode node)(Code)



matches
public boolean matches(Object value1, Object value2)(Code)
Compare two keys for equivalence. Override this and the GeneralHashTable.hash(Object) method if you want a different equivalence relation.



next
protected static HashNode next(HashNode node)(Code)



put
public Object put(Object key, Object value)(Code)



put
public Object put(Object key, int hash, Object value)(Code)



rehash
protected void rehash()(Code)



remove
public Object remove(Object key)(Code)



size
public int size()(Code)



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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