Examples of org.apache.derby.iapi.store.access.TransactionController

Package org.apache.derby.iapi.store.access

Examples of org.apache.derby.iapi.store.access.TransactionController

org.apache.derby.iapi.store.access.TransactionController
The TransactionController interface provides methods that an access client can use to control a transaction, which include the methods for gaining access to resources (conglomerates, scans, etc.) in the transaction controller's storage manager. TransactionControllers are obtained from an AccessFactory via the getTransaction method.
Each transaction controller is associated with a transaction context which provides error cleanup when standard exceptions are thrown anywhere in the system. The transaction context performs the following actions in response to cleanupOnError:
- If the error is an instance of StandardException that has a severity less than ExceptionSeverity.TRANSACTION_SEVERITY all resources remain unaffected.
- If the error is an instance of StandardException that has a severity equal to ExceptionSeverity.TRANSACTION_SEVERITY, then all resources are released. An attempt to use any resource obtained from this transaction controller after such an error will result in an error. The transaction controller itself remains valid, however.
- If the error is an instance of StandardException that has a severity greater than ExceptionSeverity.TRANSACTION_SEVERITY, then all resources are released and the context is popped from the stack. Attempting to use this controller or any resources obtained from it will result in an error.
Transactions are obtained from an AccessFactory. @see AccessFactory#getTransaction @see org.apache.derby.iapi.error.StandardException @see PersistentSet


      @exception StandardException thrown if something goes wrong
     */
    public  void    releaseSavePoint( String savepointName, Object kindOfSavepoint )  throws StandardException
    {
        TransactionController tc = getTransactionExecute();
        if (tc != null)
        {
            currentSavepointLevel = tc.releaseSavePoint( savepointName, kindOfSavepoint );
            //after a release of a savepoint, we need to go through our temp tables list.
            if (allDeclaredGlobalTempTables != null)
                tempTablesReleaseSavepointLevels();
        }
    }

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        @exception StandardException thrown if something goes wrong
      */
    public  void    languageSetSavePoint( String savepointName, Object kindOfSavepoint )  throws StandardException
    {
        TransactionController tc = getTransactionExecute();
        if (tc != null)
        {
            currentSavepointLevel = tc.setSavePoint( savepointName, kindOfSavepoint );
        }
    }

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        /* Commit and set to new isolation level.
         * NOTE: We commit first in case there's some kind
         * of error, like can't commit within a server side jdbc call.
         */
        TransactionController tc = getTransactionExecute();
        if (!tc.isIdle())
        {
            // If this transaction is in progress, commit it.
            // However, do not allow commit to happen if this is a global
            // transaction.
            if (tc.isGlobal())
                throw StandardException.newException(SQLState.LANG_NO_SET_TRAN_ISO_IN_GLOBAL_CONNECTION);


            userCommit();
        }
        this.isolationLevel = isolationLevel;

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        return (Activation)acts.get(acts.size() - 1);
    }


    public StringBuffer appendErrorInfo() {


        TransactionController tc = getTransactionExecute();
        if (tc == null)
            return null;


        StringBuffer sb = new StringBuffer(200);


        sb.append(LanguageConnectionContext.xidStr);
        sb.append(tc.getTransactionIdString());
        sb.append("), ");


        sb.append(LanguageConnectionContext.lccStr);
        sb.append(Integer.toString(getInstanceNumber()));
        sb.append("), ");

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      // upgraded dictionary to at least level 10.4 (roles
      // introduced in 10.4):
      if (lcc.usesSqlAuthorization() &&
        dd.checkVersion(DataDictionary.DD_VERSION_DERBY_10_4, null)) {


        TransactionController tc = lcc.getTransactionExecute();


        String failedString =
          MessageService.getTextMessage(MessageId.AUTH_INVALID);


        if (dd.getRoleDefinitionDescriptor(username) != null) {

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                new RAMTransactionContext(
                    cm, 
                    AccessFactoryGlobals.RAMXACT_CONTEXT_ID,
                    rt, false /* abortAll */);


      TransactionController tc = rtc.getTransaction();


      if (xactProperties != null)
            {
        rawtran.setup(tc);
        tc.commit();
      }


            rawtran.setDefaultLockingPolicy(system_default_locking_policy);


      tc.commit();


      return tc;
        }
        return rtc.getTransaction();
    }

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  }


  public LanguageConnectionContext setupConnection(ContextManager cm, String user, String drdaID, String dbname)
    throws StandardException {


    TransactionController tc = getConnectionTransaction(cm);


    cm.setLocaleFinder(this);
    pushDbContext(cm);


    // push a database shutdown context

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  protected  UUID  makeDatabaseID(boolean create, Properties startParams)
    throws StandardException
  {
    
    TransactionController tc = af.getTransaction(
        ContextService.getFactory().getCurrentContextManager());


    String  upgradeID = null;
    UUID  databaseID;


    if ((databaseID = (UUID) tc.getProperty(DataDictionary.DATABASE_ID)) == null) {


      // no property defined in the Transaction set
      // this could be an upgrade, see if it's stored in the service set


      UUIDFactory  uuidFactory  = Monitor.getMonitor().getUUIDFactory();


      
      upgradeID = startParams.getProperty(DataDictionary.DATABASE_ID);
      if (upgradeID == null )
      {
        // just create one
        databaseID = uuidFactory.createUUID();
      } else {
        databaseID = uuidFactory.recreateUUID(upgradeID);
      }


      tc.setProperty(DataDictionary.DATABASE_ID, databaseID, true);
    }


    // Remove the database identifier from the service.properties
    // file only if we upgraded it to be stored in the transactional
    // property set.
    if (upgradeID != null)
      startParams.remove(DataDictionary.DATABASE_ID);


    tc.commit();
    tc.destroy();


    return databaseID;
  }

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    {
      LanguageConnectionContext lcc = ConnectionUtil.getCurrentLCC();


      DataDictionary dd = lcc.getDataDictionary();


      TransactionController tc = lcc.getTransactionExecute();


      /*
      ** Inform the data dictionary we are going
      ** to perform some DDL
      */

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     * on disk outside of service.properties.
     */
  protected Properties getAllDatabaseProperties()
    throws StandardException {


    TransactionController tc = af.getTransaction(
                    ContextService.getFactory().getCurrentContextManager());
    Properties dbProps = tc.getProperties();
    tc.commit();
    tc.destroy();


    return dbProps;
  }

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