org.knime.core.node
Interface BufferedDataTable.KnowsRowCountTable

All Superinterfaces:

DataTable, Iterable<DataRow>

All Known Implementing Classes:

ConcatenateTable, ContainerTable, ExtensionTable, JoinedTable, RearrangeColumnsTable, TableSpecReplacerTable, WrappedTable

Enclosing class:

BufferedDataTable

public static interface BufferedDataTable.KnowsRowCountTable
extends DataTable

Internally used interface. You won't have any benefit by implementing this interface! It's used for selected classes in the KNIME core.

Method Summary

void	clear() Clears any allocated temporary files.
void	ensureOpen() Implementation of BufferedDataTable.ensureOpen().
BufferedDataTable[]	getReferenceTables() Reference to the underlying tables, if any.
int	getRowCount() Row count of the table.
CloseableRowIterator	iterator() Overridden to narrow return type to closeable iterator.
void	putIntoTableRepository(HashMap<Integer,ContainerTable> rep) Put this table into the global table repository.
boolean	removeFromTableRepository(HashMap<Integer,ContainerTable> rep) Remove this table from global table repository.
void	saveToFile(File f, NodeSettingsWO settings, ExecutionMonitor exec) Save the table to a file.

Methods inherited from interface org.knime.core.data.DataTable

getDataTableSpec

Method Detail

getRowCount

int getRowCount()

Row count of the table.

Returns:

The row count.

saveToFile

void saveToFile(File f,
                NodeSettingsWO settings,
                ExecutionMonitor exec)
                throws IOException,
                       CanceledExecutionException

Save the table to a file.

Parameters:

f - To write to.

settings - To add meta information to.

exec - For progress/cancel.

Throws:

IOException - If writing fails.

CanceledExecutionException - If canceled.

clear

void clear()

Clears any allocated temporary files. The table won't be used anymore.

ensureOpen

void ensureOpen()

Implementation of BufferedDataTable.ensureOpen().

iterator

CloseableRowIterator iterator()

Overridden to narrow return type to closeable iterator. Returns a row iterator which returns each row one-by-one from the table.

Specified by:

iterator in interface DataTable

Specified by:

iterator in interface Iterable<DataRow>

Returns:

row iterator

See Also:

DataRow

getReferenceTables

BufferedDataTable[] getReferenceTables()

Reference to the underlying tables, if any. A reference table exists if this object is just a wrapper, such as a RearrangeColumnsTable or if this table concatenates a set of other tables.

Returns:

The reference table or null.

putIntoTableRepository

void putIntoTableRepository(HashMap<Integer,ContainerTable> rep)

Put this table into the global table repository. Called when execution finished.

Parameters:

rep - The workflow table repository.

removeFromTableRepository

boolean removeFromTableRepository(HashMap<Integer,ContainerTable> rep)

Remove this table from global table repository. Called when node is reset.

Parameters:

rep - The workflow table repository.

Returns:

If this table was indeed removed from the table repository (true for ordinary container tables but false for wrappers such as concatenate or spec replacer)