org.knime.base.data.join
Class InMemoryIterator
java.lang.Object
org.knime.core.data.RowIterator
org.knime.base.data.join.InMemoryIterator
- All Implemented Interfaces:
- Iterator<DataRow>
class InMemoryIterator
- extends RowIterator
This iterator joins two tables (given by a
JoinedTable
) in memory and is therfore
magnituded faster than the standard joiner. However, it needs more memory,
depending on the number and size of the data rows in the smaller table.
- Author:
- Thorsten Meinl, University of Konstanz
Method Summary |
boolean |
hasNext()
Returns true if there are more rows and false
otherwise. |
DataRow |
next()
Returns the next DataRow . |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
InMemoryIterator
public InMemoryIterator(JoinedTable table)
- Creates a new iterator for an in memory join of two tables.
- Parameters:
table
- the JoinedTable
hasNext
public boolean hasNext()
- Returns
true
if there are more rows and false
otherwise.
- Specified by:
hasNext
in interface Iterator<DataRow>
- Specified by:
hasNext
in class RowIterator
- Returns:
true
if the iterator has more elements, otherwise
false
- See Also:
RowIterator.next()
next
public DataRow next()
- Returns the next
DataRow
.
- Specified by:
next
in interface Iterator<DataRow>
- Specified by:
next
in class RowIterator
- Returns:
- the next row in the
DataTable
Copyright, 2003 - 2010. All rights reserved.
University of Konstanz, Germany.
Chair for Bioinformatics and Information Mining, Prof. Dr. Michael R. Berthold.
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