org.coweb.oe
Class ContextVectorTable

java.lang.Object
  org.coweb.oe.ContextVectorTable

public class ContextVectorTable
extends Object

Constructor Summary

ContextVectorTable(ContextVector cv, int site)

Method Summary

ContextVector	getContextVector(int site) Gets the context vector for the given site.
int[]	getEquivalents(ContextVector cv, int skip) Gets the index of each entry in the table frozen to (i.e., sharing a reference with, the given context vector, skipping the one noted in the skip param.
ContextVector	getMinimumContextVector() Gets the context vector with the minimum sequence number for each site among all context vectors in the table.
int[][]	getState() Serializes the state of this context vector table for transmission.
void	growTo(int count) Increases the size of the context vector table to the given size.
void	setState(int[][] arr) Unserializes context vector table contents to initialize this intance.
String	toString() Converts the contents of this context vector table to a string.
void	updateWithContextVector(int site, ContextVector cv) Sets the context vector for the given site.
void	updateWithOperation(Operation op) Sets the context vector for the site on the given operation.

Methods inherited from class java.lang.Object

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

Constructor Detail

ContextVectorTable

public ContextVectorTable(ContextVector cv,
                          int site)
                   throws OperationEngineException

Throws:

OperationEngineException

Method Detail

toString

public String toString()

Converts the contents of this context vector table to a string.

Overrides:

toString in class Object

Returns:

{String} All context vectors in the table (for debug)

getEquivalents

public int[] getEquivalents(ContextVector cv,
                            int skip)

Gets the index of each entry in the table frozen to (i.e., sharing a reference with, the given context vector, skipping the one noted in the skip param.

Parameters:

{ContextVector} - cv Context vector instance

{Number} - skip Integer index to skip

getState

public int[][] getState()

Serializes the state of this context vector table for transmission.

setState

public void setState(int[][] arr)
              throws OperationEngineException

Unserializes context vector table contents to initialize this intance.

Parameters:

{Array[]} - arr Array in the format returned by getState

Throws:

OperationEngineException

growTo

public void growTo(int count)
            throws OperationEngineException

Increases the size of the context vector table to the given size. Inceases the size of all context vectors in the table to the given size. Initializes new entries with zeroed context vectors.

Parameters:

{Number} - count Desired integer size

Throws:

OperationEngineException

getContextVector

public ContextVector getContextVector(int site)
                               throws OperationEngineException

Gets the context vector for the given site. Grows the table if it does not include the site yet and returns a zeroed context vector if so.

Parameters:

{Number} - site Integer site ID

Throws:

OperationEngineException

updateWithContextVector

public void updateWithContextVector(int site,
                                    ContextVector cv)
                             throws OperationEngineException

Sets the context vector for the given site. Grows the table if it does not include the site yet.

Parameters:

{Number} - site Integer site ID

{ContextVector} - cv Context vector instance

Throws:

OperationEngineException

updateWithOperation

public void updateWithOperation(Operation op)
                         throws OperationEngineException

Sets the context vector for the site on the given operation. Grows the table if it does not include the site yet.

Parameters:

{Operation} - op Operation with the site ID and context vector

Throws:

OperationEngineException

getMinimumContextVector

public ContextVector getMinimumContextVector()
                                      throws OperationEngineException

Gets the context vector with the minimum sequence number for each site among all context vectors in the table. Gets null if the minimum vector cannot be constructed because the table is empty.

Throws:

OperationEngineException