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 :

    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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        {
      throw StandardException.newException(
                    SQLState.DATA_CONTAINER_READ_ONLY);
        }


    PageKey pkey = (PageKey)record.getPageId();
    BasePage headPage = (BasePage)getPage(pkey.getPageNumber());


    if (headPage != null)
    {
      // The page could have been null if it was deallocated after the
      // row lock is gotten.  We are doing all of these post commit so

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            tran.newLockingPolicy(
                LockingPolicy.MODE_RECORD,
                TransactionController.ISOLATION_REPEATABLE_READ, 
                true); // striterOK
    
    PageKey pkey = new PageKey(identity, deallocLock.getPageNumber());
    if (lp != null)
        {
      if (zeroDuration)
        return lp.zeroDurationLockRecordForWrite(
                        tran, deallocLock, false, wait);

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        Last slot number this record id was at.
    */
    transient private int slotNumberHint;


  public RecordId(ContainerKey container, long pageNumber, int recordId) {
    this.pageId = new PageKey(container, pageNumber);
    this.recordId = recordId;


    // FIRST_SLOT_NUMBER guaranteed to be zero
        // this.slotNumberHint = Page.FIRST_SLOT_NUMBER;
  }

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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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      SanityManager.ASSERT(key instanceof PageKey);
    }


    initialize();


    PageKey newIdentity = (PageKey) key;


    FileContainer myContainer = 
            (FileContainer) containerCache.find(newIdentity.getContainerId());


    setContainerRowCount(myContainer.getEstimatedRowCount(0));


    try
    {

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      SanityManager.ASSERT(key instanceof PageKey);
    }


    initialize();


    PageKey newIdentity = (PageKey) key;


    PageCreationArgs createArgs = (PageCreationArgs) createParameter;
        int formatId = createArgs.formatId;


    if (formatId == -1)

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  /**
    Reset the pageNumber
  */
  protected final void resetPageNumber(long pageNumber)
  {
    pageId = new PageKey(pageId.getContainerId(), pageNumber);
  }

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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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