Examples of org.apache.derby.iapi.types.SQLLongint

org.apache.derby.iapi.types.SQLLongint
SQLLongint satisfies the DataValueDescriptor interfaces (i.e., OrderableDataType). It implements a bigint column, e.g. for * storing a column value; it can be specified when constructed to not allow nulls. Nullability cannot be changed after construction, as it affects the storage size and mechanism.
Because OrderableDataType is a subtype of DataType, SQLLongint can play a role in either a DataType/Row or a OrderableDataType/Row, interchangeably.
We assume the store has a flag for nullness of the value, and simply return a 0-length array for the stored form when the value is null.
PERFORMANCE: There are likely alot of performance improvements possible for this implementation -- it new's Long more than it probably wants to.

  {
    if(!positionIndexCreated)
    {
      TransactionController tc = activation.getTransactionController();
      int numKeys = 2;
      position_sqllong = new SQLLongint();
      positionIndexRow = new DataValueDescriptor[numKeys];
      positionIndexRow[0] = position_sqllong;
      positionIndexRow[1] = rl;        
      Properties props = makeIndexProperties(positionIndexRow, CID);
      positionIndexConglomId =

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      DataValueDescriptor      conglomNumberOrderable = null;
      TabInfoImpl            ti = coreInfo[SYSCONGLOMERATES_CORE_NUM];
      SYSCONGLOMERATESRowFactory  rf = (SYSCONGLOMERATESRowFactory) ti.getCatalogRowFactory();


      conglomNumberOrderable = 
          new SQLLongint(conglomerateNumber);


    ScanQualifier[][] scanQualifier = exFactory.getScanQualifier(1);
      scanQualifier[0][0].setQualifier(
          rf.SYSCONGLOMERATES_CONGLOMERATENUMBER - 1,  /* column number */
          conglomNumberOrderable,

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      NumberDataValue increment = 
        (NumberDataValue)readRow.getColumn(SYSCOLUMNSRowFactory.SYSCOLUMNS_AUTOINCREMENTINC);
      aiValue += increment.getLong();
    }
    row.setColumn(SYSCOLUMNSRowFactory.SYSCOLUMNS_AUTOINCREMENTVALUE,
            new SQLLongint(aiValue));


    ti.updateRow(keyRow, row,
           SYSCOLUMNSRowFactory.SYSCOLUMNS_INDEX1_ID,
           bArray, 
           colsToUpdate,

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            heapCC.fetch( rowLocation, row.getRowArray(), columnToUpdate, wait );


      NumberDataValue oldValueOnDisk = (NumberDataValue) row.getColumn( columnNum );


            SQLLongint expectedOldValue;
            if ( oldValue == null ) { expectedOldValue = new SQLLongint(); }
            else { expectedOldValue = new SQLLongint( oldValue.longValue() ); }


            // only update value if what's on disk is what we expected
            if ( ( oldValue == null ) || ( expectedOldValue.compare( oldValueOnDisk ) == 0 ) )
            {
                SQLLongint newValueOnDisk;
                if ( newValue == null ) { newValueOnDisk = new SQLLongint(); }
                else { newValueOnDisk = new SQLLongint( newValue.longValue() ); }
                
                row.setColumn( columnNum, newValueOnDisk );
                heapCC.replace( rowLocation, row.getRowArray(), columnToUpdate );


                return true;

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        throws StandardException
  {
    super(open_btree, page,
              level, parent, isRoot);


        this.left_child_page = new SQLLongint(left_child);


        // finish initializing the row to be used for interacting with
        // raw store to insert, fetch, and update the control row on the page.
        this.row[CR_LEFTCHILD] = left_child_page;


        // set up buffer to read a branch row's page number into.
        child_pageno_buf = new SQLLongint();
  }

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     * Perform page specific initialization.
     * <p>
     **/
    protected final void controlRowInit()
    {
        child_pageno_buf = new SQLLongint();
    }

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  protected void setLeftChildPageno(long leftchild_pageno)
        throws StandardException
  {
    // Store the field.
    if (left_child_page == null)
      left_child_page = new SQLLongint(leftchild_pageno);
        else
            this.left_child_page.setValue(leftchild_pageno);


    // Write the field through to the underlying row
    this.page.updateFieldAtSlot(

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  long getLeftChildPageno()
        throws StandardException
    {
        if (this.left_child_page == null)
        {
            this.left_child_page = new SQLLongint();


            scratch_row[CR_LEFTCHILD] = this.left_child_page;


            fetchDesc.setValidColumns(CR_LEFTCHILD_BITMAP);
            this.page.fetchFromSlot(

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  {
        DataValueDescriptor[] columns = new DataValueDescriptor[nkeys];


        for (int i = 0; i < columns.length; i++)
        {
            columns[i] = new SQLLongint(Long.MIN_VALUE);
        }


    return columns;
  }

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    }


    currentRow = rowArray[0].getNewNullRow();
    indexRow = new DataValueDescriptor[2];
    indexRow[0] = new SQLLongint(position);
    indexRow[1] =   heapCC.newRowLocationTemplate();


    DataValueDescriptor[] searchRow =  new DataValueDescriptor[1];
    searchRow[0] = new SQLLongint(position);


    if(indexsc == null)
    {
      indexsc = tc.openScan(positionIndexConglomId,
                  false,                           // don't hold open across commit

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