Class StreamTableSink

Method Details

• scanTable

  protected abstract void scanTable(StarTable table) throws IOException

  Does something or other with the table whose data is being pushed into this sink. The only data access which will work is a single call to StarTable.getRowSequence(). Subsequent getRowSequence calls will result in a UnrepeatableSequenceException. This method is called in a separate thread than the one in which the accept* calls are made; but any exceptions thrown here are passed back to the latter thread.

  Parameters:

  table - table to consume

  Throws:

  IOException

• acceptMetadata

  public void acceptMetadata(StarTable meta) throws TableFormatException

  Description copied from interface: TableSink

  Takes delivery of a row-less StarTable object which defines the metadata of the table to be transmitted. If the number of rows that will be transmitted via subsequent calls to acceptRow is known, this value should be made available as the row count of meta (StarTable.getRowCount()); if it is not known, the row count should be -1. However, this object should not attempt to read any of meta's cell data.

  The data to be transmitted in subsequent calls of acceptRow must match the metadata transmitted in this call in the same way that rows of a StarTable must match its own metadata (number and content clases of columns etc). If this sink cannot dispose of a table corresponding to meta then it may throw a TableFormatException - this may be the case if for instance meta has columns with types that this sink can't deal with.

  Specified by:

  acceptMetadata in interface TableSink

  Parameters:

  meta - table metadata object

  Throws:

  TableFormatException - if this sink cannot accept table rows matching the given metadata

• acceptRow

  public void acceptRow(Object[] row) throws IOException

  Description copied from interface: TableSink

  Takes delivery of one row of data. row is an array of objects comprising the contents of one row of the table being transmitted. The number and classes of the elements of row are described by the metadata object previously accepted.

  Specified by:

  acceptRow in interface TableSink

  Parameters:

  row - table data row

  Throws:

  IOException

• endRows

  public void endRows() throws IOException

  Description copied from interface: TableSink

  Signals that there are no more rows to be transmitted.

  Specified by:

  endRows in interface TableSink

  Throws:

  IOException