Package org.apache.iotdb.db.mpp.execution.operator.process.fill

Interface ILinearFill

    • Method Summary

      All Methods Instance Methods Abstract Methods 
      Modifier and Type Method Description
      org.apache.iotdb.tsfile.read.common.block.column.Column fill​(org.apache.iotdb.tsfile.read.common.block.column.TimeColumn timeColumn, org.apache.iotdb.tsfile.read.common.block.column.Column valueColumn, long currentRowIndex)
      Before we call this method, we need to make sure the nextValue has been prepared or noMoreNext has been set to true
      boolean needPrepareForNext​(long rowIndex, org.apache.iotdb.tsfile.read.common.block.column.Column valueColumn)  
      boolean prepareForNext​(long startRowIndex, long endRowIndex, org.apache.iotdb.tsfile.read.common.block.column.TimeColumn nextTimeColumn, org.apache.iotdb.tsfile.read.common.block.column.Column nextValueColumn)  

    • Method Detail

      • fill

        org.apache.iotdb.tsfile.read.common.block.column.Column fill​(org.apache.iotdb.tsfile.read.common.block.column.TimeColumn timeColumn,
                                                             org.apache.iotdb.tsfile.read.common.block.column.Column valueColumn,
                                                             long currentRowIndex)
        Before we call this method, we need to make sure the nextValue has been prepared or noMoreNext has been set to true
        Parameters:
        timeColumn - TimeColumn of valueColumn
        valueColumn - valueColumn that need to be filled
        currentRowIndex - current row index for start time in timeColumn
        Returns:
        Value Column that has been filled

      • needPrepareForNext

        boolean needPrepareForNext​(long rowIndex,
                           org.apache.iotdb.tsfile.read.common.block.column.Column valueColumn)
        Parameters:
        rowIndex - row index for end time of current valueColumn that need to be filled
        valueColumn - valueColumn that need to be filled
        Returns:
        true if valueColumn can't be filled using current information, and we need to get next TsBlock and then call prepareForNext. false if valueColumn can be filled using current information, and we can directly call fill() function

      • prepareForNext

        boolean prepareForNext​(long startRowIndex,
                       long endRowIndex,
                       org.apache.iotdb.tsfile.read.common.block.column.TimeColumn nextTimeColumn,
                       org.apache.iotdb.tsfile.read.common.block.column.Column nextValueColumn)
        Parameters:
        startRowIndex - row index for start time of nextValueColumn
        endRowIndex - row index for end time of current valueColumn that need to be filled
        nextTimeColumn - TimeColumn of next TsBlock
        nextValueColumn - Value Column of next TsBlock
        Returns:
        true if we get enough information to fill current column, and we can stop getting next TsBlock and calling prepareForNext. false if we still don't get enough information to fill current column, and still need to keep getting next TsBlock and then call prepareForNext