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 :

  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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      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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   **/
    public String diag()
        throws StandardException
    {
        RecordId record_id      = (RecordId) diag_object;
        PageKey  page_key       = (PageKey)record_id.getPageId();
        long     container_id   = page_key.getContainerId().getContainerId(); 
        long     conglom_id     = Long.MIN_VALUE;
        String   str            = null;


        if (conglom_id ==  Long.MIN_VALUE)
        {

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     **/
    public void diag_detail(Properties prop)
        throws StandardException
    {
        RecordId record_id      = (RecordId) diag_object;
        PageKey  page_key       = (PageKey)record_id.getPageId();


        prop.put(RowLock.DIAG_CONTAINERID, 
            Long.toString(page_key.getContainerId().getContainerId()));


        prop.put(RowLock.DIAG_SEGMENTID, 
            Long.toString(page_key.getContainerId().getSegmentId()));


        prop.put(RowLock.DIAG_PAGENUM, 
            Long.toString(record_id.getPageNumber()));


        prop.put(RowLock.DIAG_RECID,

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

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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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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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