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

                SanityManager.THROWASSERT("Nested transaction active!");
            }
        }


    // now commit the Store transaction
    TransactionController tc = getTransactionExecute();
    if ( tc != null && commitStore ) 
    { 
      if (sync)
      {
        if (commitflag == NON_XA)
        {
          // regular commit
          tc.commit();
        }
        else
        {
          // This may be a xa_commit, check overloaded commitflag.


          if (SanityManager.DEBUG)
            SanityManager.ASSERT(commitflag == XA_ONE_PHASE ||
                       commitflag == XA_TWO_PHASE,
                         "invalid commit flag");


          ((XATransactionController)tc).xa_commit(commitflag == XA_ONE_PHASE);


        }
      }
      else
      {
        tc.commitNoSync(commitflag);
      }


      // reset the savepoints to the new
      // location, since any outer nesting
      // levels expect there to be a savepoint

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            readOnlyNestedTransaction = null;
            queryNestingDepth = 0;
        }


    // now rollback the Store transaction
    TransactionController tc = getTransactionExecute();
    if (tc != null) 
    {  
      if (xa)
        ((XATransactionController)tc).xa_rollback();
      else
        tc.abort(); 
            
      // reset the savepoints to the new
      // location, since any outer nesting
      // levels expet there to be a savepoint
      resetSavepoints();

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   */
  public void internalRollbackToSavepoint( String savepointName, boolean refreshStyle, Object kindOfSavepoint )
    throws StandardException
  {
    // now rollback the Store transaction to the savepoint
    TransactionController tc = getTransactionExecute();
    if (tc != null)
    {
      boolean    closeConglomerates;


      if ( refreshStyle ) 
      {
        closeConglomerates = true;
        // bug 5145 - don't forget to close the activations while rolling
        // back to a savepoint
        endTransactionActivationHandling(true);
      }
      else { closeConglomerates = false; }


      currentSavepointLevel = tc.rollbackToSavePoint( savepointName, closeConglomerates, kindOfSavepoint );
    }


    if (tc != null && refreshStyle && allDeclaredGlobalTempTables != null)
      tempTablesAndRollback();
  }

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    @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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    // Need a TransactionController to get database/service wide properties.
    AccessFactory af = (AccessFactory)
      Monitor.getServiceModule(dataFactory, AccessFactory.MODULE);


    // RESOLVE: sku defectid 2014
    TransactionController tc = 
            (af == null) ? 
                null : 
                af.getTransaction(
                        ContextService.getFactory().getCurrentContextManager());

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   * @return a property string value.
   **/
  public String getProperty(String key) {


    String propertyValue = null;
    TransactionController tc = null;


    try {


      if (store != null)
          {
            tc = store.getTransaction(
                ContextService.getFactory().getCurrentContextManager());
          }


      propertyValue =
      PropertyUtil.getServiceProperty(tc,
                      key,
                      (String) null);
      if (tc != null) {
      tc.commit();
      tc = null;
      }


    } catch (StandardException se) {
      // Do nothing and just return

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  }


  public String getDatabaseProperty(String key) {


    String propertyValue = null;
    TransactionController tc = null;


    try {


      if (store != null)
      tc = store.getTransaction(
                ContextService.getFactory().getCurrentContextManager());


      propertyValue =
      PropertyUtil.getDatabaseProperty(tc, key);


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


    } catch (StandardException se) {
      // Do nothing and just return

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