Java Doc for BLOBContainerImpl.java in  » Database-DBMS » Ozone-1.1 » org » ozoneDB » blob » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Database DBMS » Ozone 1.1 » org.ozoneDB.blob 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.ozoneDB.OzoneObject
      org.ozoneDB.blob.BLOBContainerImpl

BLOBContainerImpl
public class BLOBContainerImpl extends OzoneObject implements BLOBContainer(Code)
The BLOB implementation. The data are stored in several BLOBPages. The data of the BLOB can be accessed through BLOBInOutputStreams.
author:
   SMB
version:
   $Revision: 1.1 $Date: 2001/12/18 10:31:30 $


Field Summary
final protected static  intDEFAULT_PAGE_SIZE
    
protected  booleandebug
    
protected  intpageSize
    
protected  DxVectorpages
    

Constructor Summary
public  BLOBContainerImpl()
    

Method Summary
public  intavailable(int _index)
     Returns the available bytes of this BLOB beginning at index.
public  voidinit(int _pageSize)
    
public  voidonDelete()
    
protected  intpageNum(int index)
    
protected  intpageOff(int index)
    
public  byte[]read(int index, int len)
    
public  voidwrite(int _index, byte[] b, int off, int len)
     Writes the content of the Array into the BLOB starting at index.

Field Detail
DEFAULT_PAGE_SIZE
final protected static int DEFAULT_PAGE_SIZE(Code)



debug
protected boolean debug(Code)



pageSize
protected int pageSize(Code)



pages
protected DxVector pages(Code)




Constructor Detail
BLOBContainerImpl
public BLOBContainerImpl()(Code)




Method Detail
available
public int available(int _index) throws Exception(Code)
Returns the available bytes of this BLOB beginning at index. NEVER WRITE ON BLOB WHILE EXECUTING THIS METHOD!
Parameters:
  _index - the startposition the number of available bytes after _index
exception:
  Exception - (some kind of databaseexception ?)



init
public void init(int _pageSize)(Code)



onDelete
public void onDelete() throws Exception(Code)
THIS MUST BE CALLED ON DELETE TO KILL ALL REFERENCED BLOBPAGES ! (hope the database does this for me...)



pageNum
protected int pageNum(int index)(Code)



pageOff
protected int pageOff(int index)(Code)



read
public byte[] read(int index, int len) throws Exception(Code)



write
public void write(int _index, byte[] b, int off, int len) throws Exception(Code)
Writes the content of the Array into the BLOB starting at index.
Parameters:
  _index - the write startposition in the BLOB
Parameters:
  b - the bytearray to be stored
Parameters:
  off - the startindex in the bytearray
Parameters:
  len - the number of bytes to be written into the BLOB
exception:
  Exception -



Methods inherited from org.ozoneDB.OzoneObject
public ObjectContainer container()(Code)(Java Doc)
public OzoneInterface database()(Code)(Java Doc)
public void deleteRecursive()(Code)(Java Doc)
public ObjectID getObjectID()(Code)(Java Doc)
public String handle()(Code)(Java Doc)
public int hashCode()(Code)(Java Doc)
public void onCreate() throws Exception(Code)(Java Doc)
public void onDelete() throws Exception(Code)(Java Doc)
public OzoneProxy self()(Code)(Java Doc)
public synchronized void setContainer(ObjectContainer _container)(Code)(Java Doc)
public String toString()(Code)(Java Doc)
public boolean toXML(ContentHandler ch) throws SAXException(Code)(Java Doc)

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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