Examples of org.apache.derby.iapi.store.raw.xact.RawTransaction

Package org.apache.derby.iapi.store.raw.xact

Examples of org.apache.derby.iapi.store.raw.xact.RawTransaction

org.apache.derby.iapi.store.raw.xact.RawTransaction
RawTransaction is the form of Transaction used within the raw store. This allows the break down of RawStore functionality into (at least) three modules (Transactions, Data, Log) without exposing internal information on the external interface.
The transaction will notify any Observer's just before the transaction is committed, aborted or a rollback to savepoint occurs. The argument passed to the update() method of the Observer's will be one of
- RawTransaction.COMMIT - transaction is committing
- RawTransaction.ABORT - transaction is aborting
- RawTransaction.SAVEPOINTROLLBACK - transaction is being rolled back to a savepoint
The observer's must perform a value equality check (equals()) on the update arg to see why it is being notified. @see java.util.Observer

        }


    if (!allowInsert())
      return null;


    RawTransaction t = owner.getTransaction();


    // logical operations not allowed in internal transactions.
    if (undo != null) {
      t.checkLogicalOperationOk();
    }


        int recordId;
        RecordHandle handle;

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    // Handle of the first portion of the chain
    RecordHandle headHandle = null;
    RecordHandle handleToUpdate = null;


    RawTransaction t = curPage.owner.getTransaction();


    for (;;) {


      if (SanityManager.DEBUG) {
        SanityManager.ASSERT(curPage.isLatched());

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    // when inserting a long column startCOlumn is just used
    // as a flag. -1 means the insert is complete, != -1 indicates
    // more inserts are required.
    int startColumn = 0;
    RawTransaction t = curPage.owner.getTransaction();


    do {
      // in this loop, we do 3 things:
      // 1. get a new overflow page
      // 2. insert portion of a long column

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  }


  protected void prepareForBulkLoad(BaseContainerHandle handle, int numPage)
  {
    clearPreallocThreshold();
    RawTransaction tran = handle.getTransaction();


    // find the last allocation page - do not invalidate the alloc cache,
    // we don't want to prevent other people from reading or writing
    // pages. 
    AllocPage allocPage = findLastAllocPage(handle, tran);

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  }


  protected void prepareForBulkLoad(BaseContainerHandle handle, int numPage)
  {
    clearPreallocThreshold();
    RawTransaction tran = handle.getTransaction();


    // find the last allocation page - do not invalidate the alloc cache,
    // we don't want to prevent other people from reading or writing
    // pages. 
    AllocPage allocPage = findLastAllocPage(handle, tran);

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        if (ttab.findTransactionContextByGlobalId(gid) != null)
        {
            throw StandardException.newException(SQLState.STORE_XA_XAER_DUPID);
        }


        RawTransaction xact = 
            startCommonTransaction(
                rsf, cm, false, null, 
                USER_CONTEXT_ID, AccessFactoryGlobals.USER_TRANS_NAME, true);


        xact.setTransactionId(gid, xact.getId());


        return(xact);
  }

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    int irbcount = 0;


    // First undo internal transactions if there is any
    if (ttab.hasRollbackFirstTransaction())
    {
      RawTransaction internalTransaction = startInternalTransaction(rsf,
        recoveryTransaction.getContextManager());


      // make this transaction be aware that it is being used by recovery
      internalTransaction.recoveryTransaction();


      if (SanityManager.DEBUG)
        SanityManager.ASSERT(
                    internalTransaction.handlesPostTerminationWork() == false,
                    "internal recovery xact handles post termination work");


      while(ttab.getMostRecentRollbackFirstTransaction(
                                                internalTransaction))
      {
        irbcount++;
        internalTransaction.abort();
      }


      internalTransaction.close();
    }


    if (SanityManager.DEBUG)
    {
      SanityManager.ASSERT(

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                // allocate new context and associate new xact with it.
                ContextManager cm      = contextFactory.newContextManager();
                contextFactory.setCurrentContextManager(cm);


        try {
                RawTransaction rawtran = 
                    startTransaction(
                        rawStoreFactory, cm, 
                        AccessFactoryGlobals.USER_TRANS_NAME);


                if (ttab.getMostRecentPreparedRecoveredXact(rawtran))
                {
                    // found a prepared xact.  The reprepare() call will 
                    // accumulate locks, and change the transaction table entry
                    // to not be "in-recovery" so that it won't show up again.
                    rawtran.reprepare();


                    if (SanityManager.DEBUG)
                        prepared_count++;
                }
                else
                {
                    // get rid of last transaction allocated.
                    rawtran.destroy();
                    break;
                }
        }
        finally
        {

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        }




    RecordHandle handle = getRecordHandleAtSlot(slot);


    RawTransaction t = owner.getTransaction();


    doUpdateAtSlot(t, slot, handle.getId(), row, validColumns);
    
    return handle;
  }

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


    RawTransaction t = owner.getTransaction();
    RecordHandle handle = getRecordHandleAtSlot(slot);


    owner.getActionSet().actionUpdateField(t, this, slot,
        handle.getId(), fieldId, newValue, undo);

View Full Code Here

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

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

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

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

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

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

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