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Java Source Code / Java Documentation » Search Engine » Jofti » com.jofti.core

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Class Diagram

Java Document (Java Doc)

com.jofti.core .IStoreManager

All known Subclasses:   com.jofti.store .AbstractStoreManager,
IStoreManager
public interface IStoreManager (Code)

The store manager is responsible for mediating between the store implementations and the the index.

After retrieving a page the caller SHOULD ensure they call either store, remove or release after finishing with a page. Failure to do so may well have an impact on the performance of the store in being able to recycle pages.

author:
   xenephon
since:
   Jofti 1.2

Method Summary
abstract public String getName()

public IStoreKey getNextKey()
     Returns the next available storeKey to the caller.
abstract public void init(Properties properties)
     Initialises the store manager.
public void releasePage(IStoreKey key, IPage obj)
     Called by the client to notify the manager that they have finished with the page.
public void remove(IStoreKey key, IPage page)
     Removes the page from the store and frees up the positions specified in the storeKey.
public void removeAll()
     Removes all entries from the store.
public StoreWrapper retrieve(IStoreKey key)
     Returns a StoreWrapper object which containes the StoreKey and the IPage the key refers to.
abstract public void setName(String name)

public EntrySplitWrapper[] split(IPage page, int entryNumber)
     Splits an IPage into two IPage objects with a fair distribution of entries.
public IStoreKey store(IStoreKey key, IPage obj)

Stores the page in the store.

Method Detail
getName
abstract public String getName()(Code)

getNextKey
public IStoreKey getNextKey() throws JoftiException(Code)
Returns the next available storeKey to the caller.
throws:
  JoftiException -

init
abstract public void init(Properties properties) throws JoftiException(Code)
Initialises the store manager.
Parameters:
  properties -
throws:
  JoftiException -

releasePage
public void releasePage(IStoreKey key, IPage obj)(Code)
Called by the client to notify the manager that they have finished with the page.
Parameters:
  key -
Parameters:
  obj -

remove
public void remove(IStoreKey key, IPage page) throws JoftiException(Code)
Removes the page from the store and frees up the positions specified in the storeKey.
Parameters:
  key -
Parameters:
  page -
throws:
  JoftiException -

removeAll
public void removeAll() throws JoftiException(Code)
Removes all entries from the store.
throws:
  JoftiException -

retrieve
public StoreWrapper retrieve(IStoreKey key) throws JoftiException(Code)
Returns a StoreWrapper object which containes the StoreKey and the IPage the key refers to.
Parameters:
  key -
throws:
  JoftiException -

setName
abstract public void setName(String name)(Code)

split
public EntrySplitWrapper[] split(IPage page, int entryNumber)(Code)
Splits an IPage into two IPage objects with a fair distribution of entries. The EntrySplitWrapper contains both the page and the number of entries in the page.
Parameters:
  page -
Parameters:
  entryNumber -

store
public IStoreKey store(IStoreKey key, IPage obj) throws JoftiException(Code)

Stores the page in the store. Any changes to the storekey are made in the return key object.

Parameters:
  key - - containing the locations to store the page under (possibly more than one)
Parameters:
  obj - - the page to store.
throws:
  JoftiException - - thrown if the key cannot be stored.

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