org.entityfs.cap.entityattrs.impl.metadata
Class DatabaseChildEntityAttributeManager<T extends EntityAttributes>

java.lang.Object
  org.entityfs.cap.entityattrs.impl.metadata.DatabaseChildEntityAttributeManager<T>

Type Parameters:

T - The type of EntityAttributes managed by this object.

All Implemented Interfaces:

ChildEntityAttributeManager<T>

public class DatabaseChildEntityAttributeManager<T extends EntityAttributes>
extends Object
implements ChildEntityAttributeManager<T>

The ChildEntityAttributeManager is used by an EntityAttributes-enabling DirectoryDelegate to keep track of all entity attributes for its child entities. The attributes file is fetched from a AttributeFileRepository. A HeliDB database is used for reading and writing to the file.

Since:

1.0

Author:

Karl Gustafsson

In_jar:

entityfs-entity_attributes

Constructor Summary

DatabaseChildEntityAttributeManager(AttributeFileRepository fr, Serializer<T> attrSerializer, Map<EntityType,ObjectFactory<T>> af, int bufferSize, LogAdapterHolder lah)

Method Summary

void	add(String name, T attr) Set the attribute record for the entity
boolean	containsKey(String name) Does this object contain attributes for the named entity.
void	delete(String name) Delete the attribute record for the supplied entity.
T	get(String name, EntityType et) Get the attributes for the entity.
void	update(String name, T attr) Update the attribute record for the entity.

Methods inherited from class java.lang.Object

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

Constructor Detail

DatabaseChildEntityAttributeManager

public DatabaseChildEntityAttributeManager(AttributeFileRepository fr,
                                           Serializer<T> attrSerializer,
                                           Map<EntityType,ObjectFactory<T>> af,
                                           int bufferSize,
                                           LogAdapterHolder lah)

Method Detail

containsKey

public boolean containsKey(String name)

Does this object contain attributes for the named entity.

Specified by:

containsKey in interface ChildEntityAttributeManager<T extends EntityAttributes>

Parameters:

name - The name of the entity.

Returns:

true if there is an attribute record for the entity.

get

public T get(String name,
             EntityType et)

Get the attributes for the entity. If no attribute record is stored for the entity, default attributes are returned.

Specified by:

get in interface ChildEntityAttributeManager<T extends EntityAttributes>

Parameters:

name - The entity name,

et - The type of entity. This is used to create default attributes if no attribute record is saved for the entity.

Returns:

The attributes for the entity.

add

public void add(String name,
                T attr)

Set the attribute record for the entity

Specified by:

add in interface ChildEntityAttributeManager<T extends EntityAttributes>

Parameters:

name - The name of the entity.

attr - The attributes.

update

public void update(String name,
                   T attr)

Update the attribute record for the entity.

Specified by:

update in interface ChildEntityAttributeManager<T extends EntityAttributes>

Parameters:

name - The name of the entity.

attr - The new attributes for the entity.

delete

public void delete(String name)

Delete the attribute record for the supplied entity.

Specified by:

delete in interface ChildEntityAttributeManager<T extends EntityAttributes>

Parameters:

name - The name of the entity whose record should be deleted.