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Java Source Code / Java Documentation » EJB Server resin 3.1.5 » resin » com.caucho.db.index 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   com.caucho.db.index.BTree

BTree
final public class BTree (Code)
Structure of the table:
 b4 - flags
 b4 - length
 b8 - parent
 b8 - next
 tuples*
 
Structure of a tuple:
 b8  - ptr to the actual data
 key - the tuple's key
 


Field Summary
final public static  longFAIL
    

Constructor Summary
public  BTree(Store store, long rootBlockId, int keySize, KeyCompare keyCompare)
     Creates a new BTree with the given backing.

Method Summary
public  voidclose()
    
public  voidcreate()
     Creates and initializes the btree.
public static  BTreecreateStringTest(Path path, int keySize)
    
public static  BTreecreateTest(Path path, int keySize)
    
public  ArrayList<String>getBlockKeys(long blockIndex)
    
public  longgetIndexRoot()
     Returns the index root.
public  voidinsert(byte[] keyBuffer, int keyOffset, int keyLength, long value, Transaction xa, boolean isOverride)
     Inserts the new value for the given key.
public  longlookup(byte[] keyBuffer, int keyOffset, int keyLength, Transaction xa)
    
public  voidremove(byte[] keyBuffer, int keyOffset, int keyLength, Transaction xa)
    
public  StringtoString()
    

Field Detail
FAIL
final public static long FAIL(Code)




Constructor Detail
BTree
public BTree(Store store, long rootBlockId, int keySize, KeyCompare keyCompare) throws IOException(Code)
Creates a new BTree with the given backing.
Parameters:
  store - the underlying store containing the btree.




Method Detail
close
public void close()(Code)



create
public void create() throws IOException(Code)
Creates and initializes the btree.



createStringTest
public static BTree createStringTest(Path path, int keySize) throws IOException, java.sql.SQLException(Code)



createTest
public static BTree createTest(Path path, int keySize) throws IOException, java.sql.SQLException(Code)



getBlockKeys
public ArrayList<String> getBlockKeys(long blockIndex) throws IOException(Code)
Testing: returns the keys for a block



getIndexRoot
public long getIndexRoot()(Code)
Returns the index root.



insert
public void insert(byte[] keyBuffer, int keyOffset, int keyLength, long value, Transaction xa, boolean isOverride) throws SQLException(Code)
Inserts the new value for the given key. false if the block needs to be split



lookup
public long lookup(byte[] keyBuffer, int keyOffset, int keyLength, Transaction xa) throws IOException, SQLException(Code)



remove
public void remove(byte[] keyBuffer, int keyOffset, int keyLength, Transaction xa) throws SQLException(Code)



toString
public String toString()(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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