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

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

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      // into the storable row.

    } finally {

      if (p != null) {
        p.unlatch();
        p = null;
      }
    }
  }
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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;
  }

  /*
   * methods that is called underneath a page action
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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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      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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