org.jboss.dna.repository.rules
Class RuleSetRepositoryMonitor

java.lang.Object
  org.jboss.dna.repository.rules.RuleSetRepositoryMonitor

All Implemented Interfaces:

NodeChangeListener

@ThreadSafe
public class RuleSetRepositoryMonitor
extends java.lang.Object
implements NodeChangeListener

A component that can listen to a JCR repository and keep the RuleSet instances of a RuleService synchronized with that repository.

This class is a NodeChangeListener that can subscribe to changes in one or more JCR repositories being monitored by an ObservationService. As changes under the rule sets branch are discovered, they are processed asynchronously. This ensure that the processing of the repository contents does not block the other listeners of the ObservationService.

Author:

Randall Hauch

Field Summary

static java.lang.String

DEFAULT_JCR_ABSOLUTE_PATH

Constructor Summary

RuleSetRepositoryMonitor(RuleService ruleService, java.lang.String jcrAbsolutePath, ExecutionContext executionContext)
Create an instance that can listen to the RuleSet definitions stored in a JCR repository and ensure that the RuleSet instances of a RuleService reflect the definitions in the repository.

Method Summary

java.lang.String	getAbsolutePathToRuleSets()
Logger	getLogger()
RuleService	getRuleService()
void	onNodeChanges(NodeChanges changes)
void	setLogger(Logger logger)

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_JCR_ABSOLUTE_PATH

public static final java.lang.String DEFAULT_JCR_ABSOLUTE_PATH

See Also:

Constant Field Values

Constructor Detail

RuleSetRepositoryMonitor

public RuleSetRepositoryMonitor(RuleService ruleService,
                                java.lang.String jcrAbsolutePath,
                                ExecutionContext executionContext)

Create an instance that can listen to the RuleSet definitions stored in a JCR repository and ensure that the RuleSet instances of a RuleService reflect the definitions in the repository.

Parameters:

ruleService - the rule service that should be kept in sync with the JCR repository.

jcrAbsolutePath - the absolute path to the branch where the rule sets are defined; if null or empty, the default path is used

executionContext - the context in which this monitor is to execute

Throws:

java.lang.IllegalArgumentException - if the rule service or execution context is null, or if the supplied jcrAbsolutePath is invalid

Method Detail

getRuleService

public RuleService getRuleService()

Returns:

ruleService

getAbsolutePathToRuleSets

public java.lang.String getAbsolutePathToRuleSets()

Returns:

jcrAbsolutePath

getLogger

public Logger getLogger()

Returns:

logger

setLogger

public void setLogger(Logger logger)

Parameters:

logger - Sets logger to the specified value.

onNodeChanges

public void onNodeChanges(NodeChanges changes)

Specified by:

onNodeChanges in interface NodeChangeListener