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com.tangosol.net.partition
Class DefaultKeyAssociator

java.lang.Object
com.tangosol.util.Base
com.tangosol.net.partition.DefaultKeyAssociator

All Implemented Interfaces:

KeyAssociator

public class DefaultKeyAssociator

extends Base

implements KeyAssociator

A DefaultKeyAssociator provides key associations on behalf of keys that implement the KeyAssociation interface.

Since:

Coherence 3.0

Author:

gg 2005.05.19

Field Summary

protected PartitionedService

m_service The PartitionedService that this DefaultKeyAssociator is bound to.

Constructor Summary

DefaultKeyAssociator()
Default constructor.

Method Summary

java.lang.Object	getAssociatedKey(java.lang.Object oKey) Determine the key object to which the specified key object is associated.
void	init(PartitionedService service) Initialize the KeyAssociator and bind it to a PartitionedService.
protected java.lang.Object	validateKeyAssociation(java.lang.Object oKey) Check to see if the given key contains a circular association.

Field Detail

m_service

protected PartitionedService m_service

The PartitionedService that this DefaultKeyAssociator is bound to.

Constructor Detail

DefaultKeyAssociator

public DefaultKeyAssociator()

Default constructor.

Method Detail

init

public void init(PartitionedService service)

Initialize the KeyAssociator and bind it to a PartitionedService.

Specified by:

init in interface KeyAssociator

Parameters:

service - the PartitionedService that this associator is being bound to

getAssociatedKey

public java.lang.Object getAssociatedKey(java.lang.Object oKey)

Determine the key object to which the specified key object is associated. The association is calculated only for keys that implement the KeyAssociation interface. Circular associations are not allowed.

Specified by:

getAssociatedKey in interface KeyAssociator

Returns:

the key object that is associated with the specified key, or null if the specified key has no association

validateKeyAssociation

protected java.lang.Object validateKeyAssociation(java.lang.Object oKey)

Check to see if the given key contains a circular association.

Parameters:

oKey - the key to check

Returns:

the key object that is associated with the specified key, or null if the specified key has no association

Throws:

java.lang.RuntimeException - if there is a circular key association chain, or if the maximum association depth has been reached

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