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

        if( permissionsCache == null)
        {
            CacheFactory cf =
              (CacheFactory) Monitor.startSystemModule(org.apache.derby.iapi.reference.Module.CacheFactory);
            LanguageConnectionContext lcc = getLCC();
            TransactionController tc = lcc.getTransactionExecute();
            permissionsCacheSize = PropertyUtil.getServiceInt( tc,
                                                               Property.LANG_PERMISSIONS_CACHE_SIZE,
                                                               40, /* min value */
                                                               Integer.MAX_VALUE,
                                                               permissionsCacheSize /* value from boot time. */);

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   */
  public boolean isSchemaEmpty(SchemaDescriptor sd) 
    throws StandardException
  {
    DataValueDescriptor     schemaIdOrderable;
    TransactionController  tc = getTransactionCompile();


    schemaIdOrderable = getIDValueAsCHAR(sd.getUUID());


    if (isSchemaReferenced(tc, coreInfo[SYSTABLES_CORE_NUM],
          SYSTABLESRowFactory.SYSTABLES_INDEX1_ID,

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  {
    ConglomerateController  heapCC;
    ExecIndexRow      keyRow1 = null;
    DataValueDescriptor    idOrderable;
    TabInfoImpl          ti = getNonCoreTI(SYSFILES_CATALOG_NUM);
    TransactionController   tc = getTransactionExecute();
    
    /* Use tableIdOrderable and schemaIdOrderable in both start 
     * and stop position for index 1 scan. 
     */
    idOrderable = getIDValueAsCHAR(fid.getUUID());

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  void clearSPSPlans() throws StandardException
  {
    TabInfoImpl ti = getNonCoreTI(SYSSTATEMENTS_CATALOG_NUM);
    faultInTabInfo(ti);


    TransactionController tc = getTransactionExecute();


    FormatableBitSet columnToReadSet = new FormatableBitSet(SYSSTATEMENTSRowFactory.SYSSTATEMENTS_COLUMN_COUNT);
    FormatableBitSet columnToUpdateSet = new FormatableBitSet(SYSSTATEMENTSRowFactory.SYSSTATEMENTS_COLUMN_COUNT);
    columnToUpdateSet.set(SYSSTATEMENTSRowFactory.SYSSTATEMENTS_VALID -1);
    columnToUpdateSet.set(SYSSTATEMENTSRowFactory.SYSSTATEMENTS_CONSTANTSTATE -1);


    DataValueDescriptor[] replaceRow = 
            new DataValueDescriptor[SYSSTATEMENTSRowFactory.SYSSTATEMENTS_COLUMN_COUNT];


    /* Set up a couple of row templates for fetching CHARS */


    replaceRow[SYSSTATEMENTSRowFactory.SYSSTATEMENTS_VALID - 1] = 
            dvf.getDataValue(false);
    replaceRow[SYSSTATEMENTSRowFactory.SYSSTATEMENTS_CONSTANTSTATE - 1] = 
            dvf.getDataValue((Object) null);


    /* Scan the entire heap */
    ScanController sc = 
            tc.openScan(
                ti.getHeapConglomerate(),
                false,
                TransactionController.OPENMODE_FORUPDATE,
                TransactionController.MODE_TABLE,
                TransactionController.ISOLATION_REPEATABLE_READ,

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    ExecIndexRow        indexRow1;
    ExecIndexRow      indexTemplateRow;
    ExecRow         outRow;
    RowLocation        baseRowLocation;
    ScanController      scanController;
    TransactionController  tc;


    // Get the current transaction controller
    tc = getTransactionCompile();


    outRow = rf.makeEmptyRow();


    heapCC = 
            tc.openConglomerate(
                ti.getHeapConglomerate(), false, 0, 
                TransactionController.MODE_RECORD,
                TransactionController.ISOLATION_REPEATABLE_READ);




    /* Scan the index and go to the data pages for qualifying rows to
     * build the column descriptor.
     */
    scanController = tc.openScan(
        ti.getIndexConglomerate(indexId),  // conglomerate to open
        false, // don't hold open across commit
        (forUpdate) ? TransactionController.OPENMODE_FORUPDATE : 0, 
                TransactionController.MODE_RECORD,
                TransactionController.ISOLATION_REPEATABLE_READ,

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    SYSCONSTRAINTSRowFactory rf = (SYSCONSTRAINTSRowFactory) ti.getCatalogRowFactory();
    ConglomerateController  heapCC;
    ExecRow         outRow;
    ExecRow         templateRow;
    ScanController      scanController;
    TransactionController  tc;
    ConstraintDescriptor  cd = null;


    // Get the current transaction controller
    tc = getTransactionCompile();


    outRow = rf.makeEmptyRow();


    /*
    ** Table scan
    */
    scanController = tc.openScan(
        ti.getHeapConglomerate(),    // conglomerate to open
        false,               // don't hold open across commit
        0,                 // for read
        TransactionController.MODE_TABLE,
                TransactionController.ISOLATION_REPEATABLE_READ,

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    ExecIndexRow      indexTemplateRow;
    ExecRow         outRow;
    RowLocation        baseRowLocation;
    ConglomerateController  heapCC = null;
    ScanController      scanController = null;
    TransactionController  tc;
    TabInfoImpl         ti = getNonCoreTI(SYSCONSTRAINTS_CATALOG_NUM);
    SYSCONSTRAINTSRowFactory rf = (SYSCONSTRAINTSRowFactory) ti.getCatalogRowFactory();
    TableDescriptor      td = null;
    List          slist = newSList();


    if (SanityManager.DEBUG)
    {
      SanityManager.ASSERT(indexId == SYSCONSTRAINTSRowFactory.SYSCONSTRAINTS_INDEX1_ID ||
                 indexId == SYSCONSTRAINTSRowFactory.SYSCONSTRAINTS_INDEX3_ID, 
                  "bad index id, must be one of the indexes on a uuid");
      SanityManager.ASSERT(columnNum > 0 && 
                 columnNum <= SYSCONSTRAINTSRowFactory.SYSCONSTRAINTS_COLUMN_COUNT,
                  "invalid column number for column to be retrieved");
    }


    try
    {
      /* Use tableIDOrderable in both start and stop positions for scan */
      DataValueDescriptor orderable = getIDValueAsCHAR(uuid);
  
      /* Set up the start/stop position for the scan */
      ExecIndexRow keyRow = (ExecIndexRow) exFactory.getIndexableRow(1);
      keyRow.setColumn(1, orderable);


      // Get the current transaction controller
      tc = getTransactionCompile();
  
      outRow = rf.makeEmptyRow();
  
      heapCC = 
                tc.openConglomerate(
                    ti.getHeapConglomerate(), false, 0, 
                    TransactionController.MODE_RECORD,
                    TransactionController.ISOLATION_REPEATABLE_READ);


      // create an index row template
      indexRow1 = getIndexRowFromHeapRow(
                ti.getIndexRowGenerator(indexId), 
                heapCC.newRowLocationTemplate(),
                outRow);
  
      // just interested in one column
      DataValueDescriptor[] rowTemplate    = 
              new DataValueDescriptor[SYSCONSTRAINTSRowFactory.SYSCONSTRAINTS_COLUMN_COUNT];
      FormatableBitSet  columnToGetSet = 
              new FormatableBitSet(SYSCONSTRAINTSRowFactory.SYSCONSTRAINTS_COLUMN_COUNT);
      columnToGetSet.set(columnNum - 1);


      rowTemplate[columnNum - 1] = new SQLChar();
  
      // Scan the index and go to the data pages for qualifying rows 
      scanController = tc.openScan(
          ti.getIndexConglomerate(indexId),// conglomerate to open
          false,               // don't hold open across commit
          0,                 // for read
                  TransactionController.MODE_RECORD,
                  TransactionController.ISOLATION_REPEATABLE_READ,// RESOLVE: should be level 2

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    public ConglomerateDescriptor[] getConglomerateDescriptors(
                    long conglomerateNumber)
                    throws StandardException
    {
      ScanController        scanController;
      TransactionController    tc;
      ExecRow           outRow;
      DataValueDescriptor      conglomNumberOrderable = null;
      TabInfoImpl            ti = coreInfo[SYSCONGLOMERATES_CORE_NUM];
      SYSCONGLOMERATESRowFactory  rf = (SYSCONGLOMERATESRowFactory) ti.getCatalogRowFactory();

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   */
  public List getAllDependencyDescriptorsList()
        throws StandardException
  {
    ScanController         scanController;
    TransactionController      tc;
    ExecRow              outRow;
    ExecRow             templateRow;
    List            ddl = newSList();
    TabInfoImpl            ti = getNonCoreTI(SYSDEPENDS_CATALOG_NUM);
    SYSDEPENDSRowFactory    rf = (SYSDEPENDSRowFactory) ti.getCatalogRowFactory();




    // Get the current transaction controller
    tc = getTransactionCompile();


    outRow = rf.makeEmptyRow();


    scanController = tc.openScan(
      ti.getHeapConglomerate(),  // conglomerate to open
      false, // don't hold open across commit
      0, // for read
            TransactionController.MODE_TABLE,   // scans entire table.
            TransactionController.ISOLATION_REPEATABLE_READ,

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    ExecIndexRow        indexRow1;
    ExecIndexRow      indexTemplateRow;
    ExecRow         outRow;
    RowLocation        baseRowLocation;
    ScanController      scanController;
    TransactionController  tc;
    TupleDescriptor      td = null;


    // Get the current transaction controller
    tc = getTransactionCompile();


    outRow = rf.makeEmptyRow();


    heapCC = tc.openConglomerate(
                ti.getHeapConglomerate(), false, 0,
                TransactionController.MODE_RECORD,
                TransactionController.ISOLATION_REPEATABLE_READ);


    /* Scan the index and go to the data pages for qualifying rows to
     * build the column descriptor.
     */
    scanController = tc.openScan(
        ti.getIndexConglomerate(indexId),  // conglomerate to open
        false, // don't hold open across commit
        (forUpdate) ? TransactionController.OPENMODE_FORUPDATE : 0,
                TransactionController.MODE_RECORD,
                TransactionController.ISOLATION_REPEATABLE_READ,

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org.apache.derby.iapi.sql.dictionary.AliasDescriptor

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org.apache.derby.iapi.sql.dictionary.ConstraintDescriptor

org.apache.derby.iapi.sql.dictionary.RoleDescriptor

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