public void reset ( ) { if ( isConstant ) return ; if ( childColumns != null ) { for ( ColumnVector c : childColumns ) { ( ( WritableColumnVector ) c ) . reset ( ) ; } } elementsAppended = 0 ; if ( numNulls > 0 ) { putNotNulls ( 0 , capacity ) ; numNulls = 0 ; } }
Resets this column for writing . The currently stored values are no longer accessible .