Examples of org.apache.derby.iapi.types.DataValueDescriptor.compare()

Class org.apache.derby.iapi.types.DataValueDescriptor

Examples of org.apache.derby.iapi.types.DataValueDescriptor.compare()

org.apache.derby.iapi.types.DataValueDescriptor.compare()
Compare this Orderable with a given Orderable for the purpose of index positioning. This method treats nulls as ordered values - that is, it treats SQL null as equal to null and greater than all other values. @param other The Orderable to compare this one to. @return <0 - this Orderable is less than other.0 - this Orderable equals other.>0 - this Orderable is greater than other. The code should not explicitly look for -1, or 1. @exception StandardException Thrown on error

            // Get the column from the possibly partial row, of the 
            // q.getColumnId()'th column in the full row.
            DataValueDescriptor columnValue = row[q.getColumnId()];


            row_qualifies =
                columnValue.compare(
                    q.getOperator(),
                    q.getOrderable(),
                    q.getOrderedNulls(),
                    q.getUnknownRV());

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                }


                // do the compare between the column value and value in the
                // qualifier.
                row_qualifies = 
                    columnValue.compare(
                            q.getOperator(),
                            q.getOrderable(),
                            q.getOrderedNulls(),
                            q.getUnknownRV());

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            // Get the column from the possibly partial row, of the 
            // q.getColumnId()'th column in the full row.
            DataValueDescriptor columnValue = row[q.getColumnId()];


            row_qualifies =
                columnValue.compare(
                    q.getOperator(),
                    q.getOrderable(),
                    q.getOrderedNulls(),
                    q.getUnknownRV());

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                // Get the column from the possibly partial row, of the 
                // q.getColumnId()'th column in the full row.
                DataValueDescriptor columnValue = row[q.getColumnId()];


                row_qualifies =
                    columnValue.compare(
                        q.getOperator(),
                        q.getOrderable(),
                        q.getOrderedNulls(),
                        q.getUnknownRV());

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            // q.getColumnId()'th column in the full row.
            DataValueDescriptor columnValue = 
                    (DataValueDescriptor) row[q.getColumnId()];


            row_qualifies =
                columnValue.compare(
                    q.getOperator(),
                    q.getOrderable(),
                    q.getOrderedNulls(),
                    q.getUnknownRV());

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                }


                // do the compare between the column value and value in the
                // qualifier.
                row_qualifies = 
                    columnValue.compare(
                            q.getOperator(),
                            q.getOrderable(),
                            q.getOrderedNulls(),
                            q.getUnknownRV());

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    DataValueDescriptor other = (DataValueDescriptor)otherDVD;
    try {


      // Use compare method from the dominant type.
      if (typePrecedence() < other.typePrecedence())
        return (-1 * other.compare(this));


      return compare(other);


    } catch (StandardException se) {

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    DataValueDescriptor other = (DataValueDescriptor)otherDVD;
    try {


      // Use compare method from the dominant type.
      if (typePrecedence() < other.typePrecedence())
        return (-1 * other.compare(this));


      return compare(other);


    } catch (StandardException se) {

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        ConstantNode prevCN = (ConstantNode) elementAt(index - 1);
        DataValueDescriptor prevODV =
           prevCN.getValue();


        /* Swap curr and prev if prev > curr */
        if ((judgeODV == null && (prevODV.compare(currODV)) > 0) ||
          (judgeODV != null && judgeODV.greaterThan(prevODV, currODV).equals(true)))
        {
          setElementAt(currCN, index - 1);
          setElementAt(prevCN, index);
          continueSort = true;

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            // q.getColumnId()'th column in the full row.
            DataValueDescriptor columnValue = 
                    (DataValueDescriptor) row[q.getColumnId()];


            row_qualifies =
                columnValue.compare(
                    q.getOperator(),
                    q.getOrderable(),
                    q.getOrderedNulls(),
                    q.getUnknownRV());

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