Package org.apache.axis2.clustering.state

Class DefaultStateManager

java.lang.Object

org.apache.axis2.clustering.state.DefaultStateManager

All Implemented Interfaces:

StateManager, ParameterInclude

public class DefaultStateManager
extends Object
implements StateManager

This class is the defaut StateManager of the Apache Tribes based clustering implementation

Constructor Summary

Constructors

Constructor	Description
DefaultStateManager()

Method Summary

Modifier and Type	Method	Description
void	addParameter(Parameter param)	Method addParameter.
void	deserializeParameters(OMElement parameterElement)
Parameter	getParameter(String name)	Method getParameter.
ArrayList	getParameters()	Gets all the parameters in a given description.
Map	getReplicationExcludePatterns()	Get all the excluded context property name patterns
boolean	isContextClusterable(AbstractContext context)	This is a check to see whether the properties in an instance of AbstractContext should be replicated.
boolean	isParameterLocked(String parameterName)	Checks whether the parameter is locked at any level.
void	removeContext(AbstractContext context)	This method is called when AbstractContext is removed from the system
void	removeParameter(Parameter param)
void	replicateState(StateClusteringCommand command)	Replicate state using a custom StateClusteringCommand
void	setConfigurationContext(ConfigurationContext configurationContext)	Set the system's configuration context.
void	setReplicationExcludePatterns(String contextType, List patterns)	All properties in the context with type contextType which have names that match the specified pattern will be excluded from replication.
void	setSender(ChannelSender sender)
void	updateContext(AbstractContext context)	This method is called when properties in an AbstractContext are updated.
void	updateContext(AbstractContext context, String[] propertyNames)	This method is called when one need to update/replicate only certains properties in the specified context
void	updateContexts(AbstractContext[] contexts)	This method is called when properties in a collection of AbstractContexts are updated.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultStateManager

public DefaultStateManager()

Method Detail

setSender

public void setSender(ChannelSender sender)

updateContext

public void updateContext(AbstractContext context)
                   throws ClusteringFault

Description copied from interface: StateManager

This method is called when properties in an AbstractContext are updated. This could be addition of new properties, modifications of existing properties or removal of properties.

Specified by:

updateContext in interface StateManager

Parameters:

context - The context to be replicated

Throws:

ClusteringFault - If replication fails

updateContext

public void updateContext(AbstractContext context,
                          String[] propertyNames)
                   throws ClusteringFault

Description copied from interface: StateManager

This method is called when one need to update/replicate only certains properties in the specified context

Specified by:

updateContext in interface StateManager

Parameters:

context - The AbstractContext containing the properties to be replicated

propertyNames - The names of the specific properties that should be replicated

Throws:

ClusteringFault - If replication fails

updateContexts

public void updateContexts(AbstractContext[] contexts)
                    throws ClusteringFault

Description copied from interface: StateManager

This method is called when properties in a collection of AbstractContexts are updated. This could be addition of new properties, modifications of existing properties or removal of properties.

Specified by:

updateContexts in interface StateManager

Parameters:

contexts - The AbstractContexts containing the properties to be replicated

Throws:

ClusteringFault - If replication fails

replicateState

public void replicateState(StateClusteringCommand command)
                    throws ClusteringFault

Description copied from interface: StateManager

Replicate state using a custom StateClusteringCommand

Specified by:

replicateState in interface StateManager

Parameters:

command - The custom StateClusteringCommand which can be used for replicating state

Throws:

ClusteringFault - If replication fails

removeContext

public void removeContext(AbstractContext context)
                   throws ClusteringFault

Description copied from interface: StateManager

This method is called when AbstractContext is removed from the system

Specified by:

removeContext in interface StateManager

Parameters:

context - The AbstractContext to be removed

Throws:

ClusteringFault - If context removal fails

isContextClusterable

public boolean isContextClusterable(AbstractContext context)

Description copied from interface: StateManager

This is a check to see whether the properties in an instance of AbstractContext should be replicated. This allows an implementer to dissallow the replication of properties stored in a certain type of context

Specified by:

isContextClusterable in interface StateManager

Parameters:

context - The instance of AbstractContext under consideration

Returns:

True - if the provided AbstractContext is clusterable

setConfigurationContext

public void setConfigurationContext(ConfigurationContext configurationContext)

Description copied from interface: StateManager

Set the system's configuration context. This will be used by the clustering implementations to get information about the Axis2 environment and to correspond with the Axis2 environment

Specified by:

setConfigurationContext in interface StateManager

Parameters:

configurationContext - The configuration context

setReplicationExcludePatterns

public void setReplicationExcludePatterns(String contextType,
                                          List patterns)

Description copied from interface: StateManager

All properties in the context with type contextType which have names that match the specified pattern will be excluded from replication.

Only prefixes and suffixes are allowed. e.g. the local_* pattern indicates that all property names starting with local_ should be omitted from replication. *_local pattern indicated that all property names ending with _local should be omitted from replication. * pattern indicates that all properties should be excluded.

Generally, we can use the context class name as the context type.

Specified by:

setReplicationExcludePatterns in interface StateManager

Parameters:

contextType - The type of the context such as org.apache.axis2.context.ConfigurationContext, org.apache.axis2.context.ServiceGroupContext & org.apache.axis2.context.ServiceContext. Also "defaults" is a special type, which will apply to all contexts

patterns - The patterns

getReplicationExcludePatterns

public Map getReplicationExcludePatterns()

Description copied from interface: StateManager

Get all the excluded context property name patterns

Specified by:

getReplicationExcludePatterns in interface StateManager

Returns:

All the excluded pattern of all the contexts. The key of the Map is the the contextType. See StateManager.setReplicationExcludePatterns(String,List). The values are of type List of String Objects, which are a collection of patterns to be excluded.

See Also:

StateManager.setReplicationExcludePatterns(String, java.util.List)

addParameter

public void addParameter(Parameter param)
                  throws AxisFault

Description copied from interface: ParameterInclude

Method addParameter.

Specified by:

addParameter in interface ParameterInclude

Throws:

AxisFault

removeParameter

public void removeParameter(Parameter param)
                     throws AxisFault

Specified by:

removeParameter in interface ParameterInclude

Throws:

AxisFault

getParameter

public Parameter getParameter(String name)

Description copied from interface: ParameterInclude

Method getParameter.

Specified by:

getParameter in interface ParameterInclude

Returns:

Returns Parameter.

getParameters

public ArrayList getParameters()

Description copied from interface: ParameterInclude

Gets all the parameters in a given description.

Specified by:

getParameters in interface ParameterInclude

Returns:

Returns ArrayList.

isParameterLocked

public boolean isParameterLocked(String parameterName)

Description copied from interface: ParameterInclude

Checks whether the parameter is locked at any level.

Specified by:

isParameterLocked in interface ParameterInclude

deserializeParameters

public void deserializeParameters(OMElement parameterElement)
                           throws AxisFault

Specified by:

deserializeParameters in interface ParameterInclude

Throws:

AxisFault