org.knime.base.data.join
Class InMemoryIterator

java.lang.Object
  extended by org.knime.core.data.RowIterator
      extended by 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

Constructor Summary
InMemoryIterator(JoinedTable table)
          Creates a new iterator for an in memory join of two tables.
 
Method Summary
 boolean hasNext()
          Returns true if there are more rows and false otherwise.
 DataRow next()
          Returns the next DataRow.
 
Methods inherited from class org.knime.core.data.RowIterator
remove
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

InMemoryIterator

public InMemoryIterator(JoinedTable table)
Creates a new iterator for an in memory join of two tables.

Parameters:
table - the JoinedTable
Method Detail

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


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University of Konstanz, Germany.
Chair for Bioinformatics and Information Mining, Prof. Dr. Michael R. Berthold.
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