Examples of org.apache.derby.impl.store.raw.data.BasePage.unlatch()

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

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

Examples of org.apache.derby.impl.store.raw.data.BasePage.unlatch()

org.apache.derby.impl.store.raw.data.BasePage.unlatch()
Unlatch the page. @see Page#unlatch

    try {


      int overflowSlot = getOverflowSlot(overflowPage, recordHeader);


      overflowPage.doUpdateAtSlot(t, overflowSlot, recordHeader.getOverflowId(), row, validColumns);
      overflowPage.unlatch();
      overflowPage = null;


      return;


    } finally {

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      return;


    } finally {
      if (overflowPage != null) {
        overflowPage.unlatch();
        overflowPage = null;
      }
    }
  }

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          // Update the previous record header to point to new portion
          if (curPage == this)
            updateOverflowDetails(this, handle, portionHandle);
          else
            updateOverflowDetails(handle, portionHandle);
          op.unlatch();
        } 
                else 
                {


          // See earlier comments on checking row reserved space.

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                    // If the lock manager were changed to allow latches to be 
                    // transferred between transactions, wouldn't need to 
                    // unlatch to do the transfer, and would avoid having to 
                    // retry in these cases (beetle 4011).


            page.unlatch();
            page = null;


            // need to find it in the cache again since unlatch also 
                    // unkept the page from the cache
            page = (BasePage)pageCache.find(pkey);

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                        page.getPageStatus() != BasePage.VALID_PAGE)
                    {
                        retry = true;
                        if (page != null)
                        {
                            page.unlatch();
                            page = null;
                        }
                        allocPage.unlatch();
                        allocPage = null;
                    }

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                SanityManager.ASSERT(page.isLatched());
    }
    catch (StandardException se)
    {
      if (page != null)
        page.unlatch();
      page = null;


      throw se;      // rethrow error
    }
    finally

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    // readers) if that is needed
    if ((page.isOverflowPage() && !overflowOK) ||
      (page.getPageStatus() != BasePage.VALID_PAGE))
    {
      // unlatch releases page from cache, see StoredPage.releaseExclusive()
            page.unlatch();
      page = null;
    }


    return page;
  }

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    if (p != null)
    {
            // make sure the page is not too full
            if (!p.allowInsert())
            {
                p.unlatch();
                p = null;


                // it is too full, make sure we are tracking it so we won't
                // see it again.
                allocCache.trackUnfilledPage(pageNumber, false);

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    if (!recordHeader.hasOverflow())
      return super.fetchNumFieldsAtSlot(slot);


    BasePage overflowPage = getOverflowPage(recordHeader.getOverflowPage());
    int count = overflowPage.fetchNumFieldsAtSlot(getOverflowSlot(overflowPage, recordHeader));
    overflowPage.unlatch();
    return count;
  }


    /**
     * Move record to a page toward the beginning of the file.

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    try {


      int overflowSlot = getOverflowSlot(overflowPage, recordHeader);


      overflowPage.doUpdateAtSlot(t, overflowSlot, recordHeader.getOverflowId(), row, validColumns);
      overflowPage.unlatch();
      overflowPage = null;


      return;


    } finally {

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