com.impetus.kundera.cache

Class ElementCollectionCacheManager

java.lang.Object

com.impetus.kundera.cache.ElementCollectionCacheManager

public class ElementCollectionCacheManager
extends Object

Cache for holding element collection column names and corresponding objects This is a singleton class TODO: Improve singleton implementation code, think performance overhead due to synchronization TODO: Think of a better way to handle element collection object handling. better remove this cache altogether

Author:

amresh.singh

Field Summary

Fields

Modifier and Type	Field and Description
private static Map<Object,Map<Object,String>>	elementCollectionCache Mapping between Row Key and (Map of element collection objects and element collection object name).
private static ElementCollectionCacheManager	instance The instance.
private static org.slf4j.Logger	log log for this class.

Constructor Summary

Constructors

Modifier	Constructor and Description
private	ElementCollectionCacheManager() Instantiates a new element collection cache manager.

Method Summary

Methods

Modifier and Type	Method and Description
void	addElementCollectionCacheMapping(Object rowKey, Object elementCollectionObject, String elementCollObjectName) Adds the element collection cache mapping.
void	clearCache() Clear cache.
Map<Object,Map<Object,String>>	getElementCollectionCache() Gets the element collection cache.
String	getElementCollectionObjectName(Object rowKey, Object elementCollectionObject) Gets the element collection object name.
static ElementCollectionCacheManager	getInstance() Gets the single instance of ElementCollectionCacheManager.
int	getLastElementCollectionObjectCount(Object rowKey) Gets the last element collection object count.
boolean	isCacheEmpty() Checks if is cache empty.

Methods inherited from class java.lang.Object

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

Field Detail

log

private static org.slf4j.Logger log

log for this class.

instance

private static ElementCollectionCacheManager instance

The instance.

elementCollectionCache

private static Map<Object,Map<Object,String>> elementCollectionCache

Mapping between Row Key and (Map of element collection objects and element collection object name).

Constructor Detail

ElementCollectionCacheManager

private ElementCollectionCacheManager()

Instantiates a new element collection cache manager.

Method Detail

getInstance

public static ElementCollectionCacheManager getInstance()

Gets the single instance of ElementCollectionCacheManager.

Returns:

single instance of ElementCollectionCacheManager

getElementCollectionCache

public Map<Object,Map<Object,String>> getElementCollectionCache()

Gets the element collection cache.

Returns:

the elementCollectionCache

isCacheEmpty

public boolean isCacheEmpty()

Checks if is cache empty.

Returns:

true, if is cache empty

addElementCollectionCacheMapping

public void addElementCollectionCacheMapping(Object rowKey,
                                    Object elementCollectionObject,
                                    String elementCollObjectName)

Adds the element collection cache mapping.

Parameters:

rowKey - the row key

elementCollectionObject - the element collection object

elementCollObjectName - the element coll object name

getElementCollectionObjectName

public String getElementCollectionObjectName(Object rowKey,
                                    Object elementCollectionObject)

Gets the element collection object name.

Parameters:

rowKey - the row key

elementCollectionObject - the element collection object

Returns:

the element collection object name

getLastElementCollectionObjectCount

public int getLastElementCollectionObjectCount(Object rowKey)

Gets the last element collection object count.

Parameters:

rowKey - the row key

Returns:

the last element collection object count

clearCache

public void clearCache()

Clear cache.