Examples of org.apache.derby.iapi.store.raw.Page.unlatch()

Class org.apache.derby.iapi.store.raw.Page

Examples of org.apache.derby.iapi.store.raw.Page.unlatch()

org.apache.derby.iapi.store.raw.Page.unlatch()
Unlatch me, the page is exclusivly latched by its current user until this method call is made.
After using this method the caller must throw away the reference to the Page object, e.g.
```
 ref.unlatch(); ref = null; 
```
The page will be released automatically at the close of the container if this method is not called explictly.
MT - latched

            page.updateAtSlot(
                Page.FIRST_SLOT_NUMBER,
                control_row,
                (FormatableBitSet) null);


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

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        finally
        {
            if (container != null)
                container.close();
            if (page !=null)
                page.unlatch();
        }


        return;
    }

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                    // the commit will close the underlying 
                    open_conglom.reopen();
                }
                else
                {
                    page.unlatch();
                    page = null;
                }


                page = open_conglom.getContainer().getNextPage(pageno);
            }

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        finally 
        {


      if (firstPage != null) 
            {
        firstPage.unlatch();
        firstPage = null;
      }
      
      containerCache.release(container);

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            if (leftPage != null) {
                // Got the latch. Anything may have happened while we didn't
                // hold any latches, so we don't know if we're still supposed
                // to go to that page. Just release the latch and let the
                // caller reposition to the right spot in the B-tree.
                leftPage.unlatch();
                leftPage = null;
            }


            return false;
        }

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                // work gets fired twice, in that case, the second time it is
                // fired, this overflow page may not part of this row chain
                // that is being updated.
                Page firstPageOnColumnChain = getOverflowPage(overflowPage);
                PageTimeStamp ts = firstPageOnColumnChain.currentTimeStamp();
                firstPageOnColumnChain.unlatch();


                RawTransaction rxact = (RawTransaction)owner.getTransaction();


                ReclaimSpace work = 
                    new ReclaimSpace(ReclaimSpace.COLUMN_CHAIN,

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            for (int i = 3; i > 0; i--)
            {
                Page page = addPage(handle, false);
                lastInsertedPage[i] = page.getPageNumber();
                page.unlatch();
            }
        }
    }


  /*

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                // held until end transaction in order to insure no other
                // transaction uses the space freed by the purge, which
                // would cause a subquent undo of the purge to fail.
        if (!purgingDone)
                {
                    page.unlatch();
                    page = null;
                }
            }
        }
        else

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                // work gets fired twice, in that case, the second time it is
                // fired, this overflow page may not part of this row chain
                // that is being updated.
                Page firstPageOnColumnChain = getOverflowPage(overflowPage);
                PageTimeStamp ts = firstPageOnColumnChain.currentTimeStamp();
                firstPageOnColumnChain.unlatch();


                RawTransaction rxact = (RawTransaction)owner.getTransaction();


                ReclaimSpace work = 
                    new ReclaimSpace(ReclaimSpace.COLUMN_CHAIN,

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            {
                SanityManager.DEBUG_PRINT(
                    "p_heap", ConglomerateUtil.debugPage(page, 0, false, row));


                long pageid = page.getPageNumber();
                page.unlatch();
                page = container.getNextPage(pageid);
            }
        }


        return;

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