Examples of org.apache.derby.iapi.store.raw.PageKey

org.apache.derby.iapi.store.raw.PageKey
A key that identifies a BasePage. Used as the key for the caching mechanism.
MT - Immutable :

      return null;
    }


    // RESOLVE: no translation!


    PageKey pageSearch = new PageKey(identity, pageNumber);
    BasePage page = (BasePage)pageCache.find(pageSearch);


    if (page == null)
    {
      return page;

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    synchronized(allocCache)
    {
      allocCache.invalidate();
    }
    
    PageKey pageSearch = new PageKey(identity, pageNumber);
    BasePage page = (BasePage) pageCache.find(pageSearch);


    return page;
  }

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    // RESOLVE: first need to verify that the page is really NOT in the
    // container!


    // no address translation necessary
    PageKey pkey = new PageKey(identity, pageNumber);


    PageCreationArgs reCreatePageArgs;


    if (pageFormat == StoredPage.FORMAT_NUMBER)
    {

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  protected BasePage getAllocPage(long pageNumber) throws StandardException 
  {
    if (getCommittedDropState()) // committed and dropped, cannot get a page
      return null;


    PageKey pageSearch = new PageKey(identity, pageNumber);
    BasePage page = (BasePage) pageCache.find(pageSearch);


    if (SanityManager.DEBUG)
    {
      if (page == null)

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   */
  protected BasePage getLatchedPage(BaseContainerHandle handle, 
                                        long pageNumber) 
    throws StandardException 
  {
    PageKey pageKey = new PageKey(identity, pageNumber);
    BasePage page = (BasePage) pageCache.find(pageKey);
        
    if (SanityManager.DEBUG){
      SanityManager.ASSERT(page != null, "page is not found :" + pageKey);
    }

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    boolean error = false;
    int count = 0;


    while(count < preAllocSize)
    {
      PageKey pkey = new PageKey(identity, 
                     lastPreallocPagenum+count+1);
      try
      {
        // create Identity will do a writePage
        page.createIdentity(pkey, createArgs);

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    RawTransaction t = owner.getTransaction();


    // lock the records to be purged
    int[] recordIds = new int[numpurges];


    PageKey pageId = getPageId(); // RESOLVE: MT problem ?


    for (int i = 0; i < numpurges; i++)
    {
      recordIds[i] = getHeaderAtSlot(slot + i).getId();

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    BasePage dpage = (BasePage)destPage;


    // make sure they are from the same container - this means they are of
    // the same size and have the same page and record format.


    PageKey pageId = getPageId(); // RESOLVE: MT problem ?


    if (!pageId.getContainerId().equals(dpage.getPageId().getContainerId()))
        {
      throw StandardException.newException(
                    SQLState.DATA_DIFFERENT_CONTAINER, 
                    pageId.getContainerId(), 
                    dpage.getPageId().getContainerId());
        }


    int[] recordIds = new int[num_rows];

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    // get num_rows row locks, need to predict what those recordIds will be


    int[] recordIds = new int[num_rows];


    PageKey pageId = getPageId(); // RESOLVE - MT problem ?


    // get new recordIds for the rows from this page 
    // RESOLVE: we should also record the amount of reserved space


    for (int i = 0; i < num_rows; i++)

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    checksum.reset();
    checksum.update(a, 0, CONTAINER_INFO_SIZE - CHECKSUM_SIZE);


    if (onDiskChecksum != checksum.getValue())
    {
      PageKey pk = new PageKey(identity, FIRST_ALLOC_PAGE_NUMBER);


      throw dataFactory.markCorrupt
        (StandardException.newException(
                    SQLState.FILE_BAD_CHECKSUM, 
                    pk,

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Related Classes of org.apache.derby.iapi.store.raw.PageKey

org.apache.derby.iapi.store.raw.ContainerKey

org.apache.derby.impl.store.raw.data.BaseContainer

org.apache.derby.impl.store.raw.data.BaseContainerHandle

org.apache.derby.impl.store.raw.data.BasePage

org.apache.derby.impl.store.raw.data.CachedPage

org.apache.derby.impl.store.raw.data.D_RecordId

org.apache.derby.impl.store.raw.data.FileContainer

org.apache.derby.impl.store.raw.data.PageBasicOperation

org.apache.derby.impl.store.raw.data.RecordId

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