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.

                (DataValueDescriptor[])deletedKeys.remove(hashKey);


        if (savedRow == null) {
            savedRow = new DataValueDescriptor[numColumns + 1];
            System.arraycopy(refKey, 0, savedRow, 0, numColumns);
            savedRow[numColumns] = new SQLLongint(1);
        } else {
            savedRow[numColumns] = new SQLLongint(
                ((SQLLongint)savedRow[numColumns]).getLong() + 1);
        }


        deletedKeys.putRow(false, savedRow, null);
    }

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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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  private BranchRow(
    Transaction         rawtran,
    BTree               btree)
        throws StandardException
  {
        SQLLongint child_page  = 
            new SQLLongint(ContainerHandle.INVALID_PAGE_NUMBER);


        branchrow   = btree.createBranchTemplate(rawtran, child_page);


        if (SanityManager.DEBUG)
        {

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        /* now create a different child page pointer object and place it as
         * last column in the new branch row.
         */
        newbranch.branchrow[newbranch.branchrow.length - 1] = 
            new SQLLongint(childpageno);


        return(newbranch);
    }

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        /* now create a different child page pointer object and place it as
         * last column in the new branch row.
         */
        newbranch.branchrow[newbranch.branchrow.length - 1] = 
            new SQLLongint(childpageno);


        return(newbranch);
    }

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            break;
       case Types.SMALLINT:
           setValue(new SQLSmallint((Short)value));
            break;
       case Types.BIGINT:
           setValue(new SQLLongint((Long)value));
            break;
       case Types.DECIMAL:
           setValue(new SQLDecimal((BigDecimal)value));
            break;
       case Types.DOUBLE:

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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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