biz.hammurapi.rules
Class PojoCollectionManager

java.lang.Object
  biz.hammurapi.config.ComponentBase
      biz.hammurapi.rules.PojoCollectionManager

All Implemented Interfaces:

biz.hammurapi.config.Component, biz.hammurapi.config.Context, biz.hammurapi.metrics.MeasurementCollector, biz.hammurapi.metrics.MeasurementConsumer, CollectionManager, Negatable

public class PojoCollectionManager
extends biz.hammurapi.config.ComponentBase
implements biz.hammurapi.config.Component, CollectionManager

Collection manager which holds collections in memory and can use storage to persist state.

Version:

${Revision}

Author:

Pavel Vlasov

Field Summary

Fields inherited from class biz.hammurapi.config.ComponentBase

owner

Constructor Summary

PojoCollectionManager()

Method Summary

void	clear() Clears all collections.
java.util.Collection	get(java.lang.String ruleName, java.lang.String listName, java.lang.Object monitor) Retrieves collection from the manager.
boolean	isNegatedBy(Negator negator) Iterates over all collections and removes negated facts.
void	setCollectionType(java.lang.Class collectionType)
void	setCollectionType(java.lang.String collectionType)
void	setStorageReference(java.lang.String storageReference) Path to object storage.
void	start() Starts collection manager.
void	stop() Empty method.

Methods inherited from class biz.hammurapi.config.ComponentBase

addMeasurement, get, getChild, getMeasurementConsumer, getOwner, getOwner, setMeasurementConsumer, setOwner

Methods inherited from class java.lang.Object

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

Methods inherited from interface biz.hammurapi.config.Component

setOwner

Constructor Detail

PojoCollectionManager

public PojoCollectionManager()

Method Detail

setStorageReference

public void setStorageReference(java.lang.String storageReference)

Path to object storage.

Parameters:

storageReference -

start

public void start()
           throws biz.hammurapi.config.ConfigurationException

Starts collection manager. Loads collections from storage if storage reference is not null.

Specified by:

start in interface biz.hammurapi.config.Component

Throws:

biz.hammurapi.config.ConfigurationException

stop

public void stop()
          throws biz.hammurapi.config.ConfigurationException

Empty method. Storage of collections is performed by object storage if storage reference is set.

Specified by:

stop in interface biz.hammurapi.config.Component

Throws:

biz.hammurapi.config.ConfigurationException

get

public java.util.Collection get(java.lang.String ruleName,
                                java.lang.String listName,
                                java.lang.Object monitor)

Description copied from interface: CollectionManager

Retrieves collection from the manager. If a collection for this name doesn't exist it should be created.

Specified by:

get in interface CollectionManager

Parameters:

ruleName - Name of the rule this collection belongs to.

listName - Name of the collection withing the rule.

monitor - Collection monitor for synchronization.

Returns:

Collection, never null.

See Also:

biz.hammurapi.rules.CollectionManager#getList(java.lang.String, java.lang.String)

clear

public void clear()

Description copied from interface: CollectionManager

Clears all collections.

Specified by:

clear in interface CollectionManager

isNegatedBy

public boolean isNegatedBy(Negator negator)

Iterates over all collections and removes negated facts. Collection operations are synchronized using monitor object passed in get() method for a given collection or collection itself if monitor is null.

Specified by:

isNegatedBy in interface Negatable

Returns:

true if negator negates this instance.

setCollectionType

public void setCollectionType(java.lang.String collectionType)

setCollectionType

public void setCollectionType(java.lang.Class collectionType)