public interface TableSink
StarTable
argument may be unsuitable
in that it requires the row sequence to be accessible multiple times).
Any source which uses this interface must do so in the following sequence:
acceptMetadata(uk.ac.starlink.table.StarTable)
once
acceptRow(java.lang.Object[])
once for each row in the table
endRows()
once
Modifier and Type | Method and Description |
---|---|
void |
acceptMetadata(StarTable meta)
Takes delivery of a row-less StarTable object which defines
the metadata of the table to be transmitted.
|
void |
acceptRow(java.lang.Object[] row)
Takes delivery of one row of data.
|
void |
endRows()
Signals that there are no more rows to be transmitted.
|
void acceptMetadata(StarTable meta) throws TableFormatException
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.
meta
- table metadata objectTableFormatException
- if this sink cannot accept table rows
matching the given metadatavoid acceptRow(java.lang.Object[] row) throws java.io.IOException
row
- table data rowjava.io.IOException
void endRows() throws java.io.IOException
java.io.IOException