weka.gui.beans

Class Join.InstanceHolder

java.lang.Object

weka.gui.beans.Join.InstanceHolder

All Implemented Interfaces:

java.io.Serializable

Enclosing class:

Join

protected static class Join.InstanceHolder
extends java.lang.Object
implements java.io.Serializable

Small helper class for holding an instance and the values of any string attributes it might have. This is needed in the streaming case as the KnowledgeFlow only ever keeps the current instances string values in the header (to save memory). Since we have to buffer a certain number of instances from each input, it is necessary to have a separate copy of the string values so that they can be restored to correct values in the outgoing instances.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected Instance	m_instance The instance
protected java.util.Map<java.lang.String,java.lang.String>	m_stringVals for incremental operation, if string attributes are present then we need to store them with each instance - since incremental streaming in the knowledge flow only maintains one string value in memory (and hence in the header) at any one time

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	InstanceHolder()

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

m_instance

protected Instance m_instance

The instance

m_stringVals

protected java.util.Map<java.lang.String,java.lang.String> m_stringVals

for incremental operation, if string attributes are present then we need to store them with each instance - since incremental streaming in the knowledge flow only maintains one string value in memory (and hence in the header) at any one time

Constructor Detail

InstanceHolder

protected InstanceHolder()