Package org.apache.derby.iapi.util

Examples of org.apache.derby.iapi.util.JBitSet.clearAll()

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         * for T3, and thus this check will fail when curTable
         * is PRN4 but will pass when it is PRN5, which is what
         * we want.
         */
        tNum = ((FromTable)curTable).getTableNumber();
        curTableNums.clearAll();
        btnVis.setTableMap(curTableNums);
        ((FromTable)curTable).accept(btnVis);
        if (tNum >= 0)
          curTableNums.set(tNum);

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         * for T3, and thus this check will fail when curTable
         * is PRN4 but will pass when it is PRN5, which is what
         * we want.
         */
        tNum = ((FromTable)curTable).getTableNumber();
        curTableNums.clearAll();
        btnVis.setTableMap(curTableNums);
        ((FromTable)curTable).accept(btnVis);
        if (tNum >= 0)
          curTableNums.set(tNum);

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    BaseTableNumbersVisitor btnVis = new BaseTableNumbersVisitor(tNums);
    opNode.getLeftOperand().accept(btnVis);
    if (tNums.getFirstSetBit() == -1)
      return false;

    tNums.clearAll();
    opNode.getRightOperand().accept(btnVis);
    if (tNums.getFirstSetBit() == -1)
      return false;

    return true;
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     */
    if (!canPush)
      return false;

    // Check the right child.
    tableNums.clearAll();
    rightResultSet.accept(btnVis);
    canPush = (tableNums.getFirstSetBit() != -1);
    if (!canPush)
      return false;

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    // if the operands are actually supposed to be scoped to _this_
    // node's children.  Note that in order for the predicate to
    // have been pushed this far, at least one of its operands must
    // apply to this node--we don't know which one it is, though,
    // so we use this tableNums info to figure that out.
    tableNums.clearAll();
    this.accept(btnVis);

    /* What we want to do here is push the predicate to the left/right
     * child.  That means that we need to find the equivalent column(s)
     * in each child.
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    BaseTableNumbersVisitor btnVis = new BaseTableNumbersVisitor(tNums);
    opNode.getLeftOperand().accept(btnVis);
    if (tNums.getFirstSetBit() == -1)
      return false;

    tNums.clearAll();
    opNode.getRightOperand().accept(btnVis);
    if (tNums.getFirstSetBit() == -1)
      return false;

    return true;
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         * for T3, and thus this check will fail when curTable
         * is PRN4 but will pass when it is PRN5, which is what
         * we want.
         */
        tNum = ((FromTable)curTable).getTableNumber();
        curTableNums.clearAll();
        btnVis.setTableMap(curTableNums);
        ((FromTable)curTable).accept(btnVis);
        if (tNum >= 0)
          curTableNums.set(tNum);

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     */
    if (!canPush)
      return false;

    // Check the right child.
    tableNums.clearAll();
    rightResultSet.accept(btnVis);
    canPush = (tableNums.getFirstSetBit() != -1);
    if (!canPush)
      return false;

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    // if the operands are actually supposed to be scoped to _this_
    // node's children.  Note that in order for the predicate to
    // have been pushed this far, at least one of its operands must
    // apply to this node--we don't know which one it is, though,
    // so we use this tableNums info to figure that out.
    tableNums.clearAll();
    this.accept(btnVis);

    /* What we want to do here is push the predicate to the left/right
     * child.  That means that we need to find the equivalent column(s)
     * in each child.
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    BaseTableNumbersVisitor btnVis = new BaseTableNumbersVisitor(tNums);
    opNode.getLeftOperand().accept(btnVis);
    if (tNums.getFirstSetBit() == -1)
      return false;

    tNums.clearAll();
    opNode.getRightOperand().accept(btnVis);
    if (tNums.getFirstSetBit() == -1)
      return false;

    return true;
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