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.

        throws StandardException
  {
    if (this.level == null)
    {
      // Fault in the level
      this.level = new SQLLongint();


            scratch_row[CR_LEVEL_COLID] = this.level;


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

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  protected void setLevel(int newlevel)
        throws StandardException
  {
    // Store the field.
    if (this.level == null)
      this.level = new SQLLongint();
    this.level.setValue((long) newlevel);


    // Write the field through to the underlying row.
    this.page.updateFieldAtSlot(CR_SLOT, CR_LEVEL_COLID, this.level, null);
  }

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    // convert 1 to true, 0 to false;
        
    if (this.isRoot == null)
    {
      // Fault in the level
      this.isRoot = new SQLLongint();


            scratch_row[CR_ISROOT_COLID] = this.isRoot;


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

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  {
        // RESOLVE (mmm) - need to store more efficiently //


    // Store the field.
    if (this.isRoot == null)
      this.isRoot = new SQLLongint();


    this.isRoot.setValue((isRoot) ? 1 : 0);


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

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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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            //
            if ( !baseRowExists ) { return false; }


      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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    }


    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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        public Long getValueOnDisk() { return _valueOnDisk; }
        
        public long getCurrentValueAndAdvance() throws Exception
        {
            SQLLongint nextValue = new SQLLongint();
            
            getCurrentValueAndAdvance( nextValue );
            
            return nextValue.getLong();
        }

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    /* 2nd column is TABLEID (UUID - char(36)) */
    row.setColumn(2, new SQLChar(tabID));


    /* 3rd column is CONGLOMERATENUMBER (long) */
    row.setColumn(3, new SQLLongint(conglomNumber));


    /* 4th column is CONGLOMERATENAME (varchar(128)) 
    ** If null, use the tableid so we always
    ** have a unique column
    */

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