de.xima.fc.utils

Class GenericDaoUtils

java.lang.Object

de.xima.fc.utils.GenericDaoUtils

public class GenericDaoUtils
extends Object

Utility class for working with entities

Author:

XIMA MEDIA GmbH

Method Summary

Modifier and Type	Method and Description
static <T extends de.xima.cmn.dao.interfaces.IEntity<Long>> List<T>	getEntities(IEntityContext ec, List<UUID> uuids, Object context, Class<T> entityClass)
static <T extends de.xima.cmn.dao.interfaces.IEntity<Long>> T	getEntity(IEntityContext ec, UUID uuid, Object context, Class<T> entityClass) Gets the entity with the given UUID in the given context
static Long	getIdFromUUID(IEntityContext ec, UUID uuid, Object context, Class<?> entityClass) Translates an entity UUID to its corresponding ID if it exists
static List<Long>	getIdsFromUUIDs(IEntityContext ec, List<UUID> uuids, Object context, Class<?> entityClass) Translates the list of UUIDs to a list of IDs
static List<Long>	getIdsFromUUIDStrings(IEntityContext ec, List<String> strUuids, Object context, Class<?> entityClass) Translates the list of UUID strings to a list of IDs
static Object	getUuidContextValue(de.xima.cmn.dao.interfaces.IEntity<Long> contextEntity, Class<?> entityClass)
static <T extends de.xima.cmn.dao.interfaces.IEntity<Long>> T	loadPersistedEntity(IEntityContext ec, T entity) Returns entity that is persisted in the database (fully initialized) based on its UUID and CONTEXT (client, project, ...)
static <T extends de.xima.cmn.dao.interfaces.IEntity<Long>> T	merge(IEntityContext ec, T entity, T persisted)

Methods inherited from class java.lang.Object

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

Method Detail

getIdsFromUUIDStrings

public static final List<Long> getIdsFromUUIDStrings(IEntityContext ec,
                                                     List<String> strUuids,
                                                     Object context,
                                                     Class<?> entityClass)

Translates the list of UUID strings to a list of IDs

Parameters:

ec - IEntityContext to use

strUuids - List entity UUID strings

context - Object entity to use as context

entityClass - Class of the entities

Returns:

List of entity IDs

getIdsFromUUIDs

public static final List<Long> getIdsFromUUIDs(IEntityContext ec,
                                               List<UUID> uuids,
                                               Object context,
                                               Class<?> entityClass)

Translates the list of UUIDs to a list of IDs

Parameters:

ec - IEntityContext to use

uuids - List entity UUIDs

context - Object entity to use as context

entityClass - Class of the entities

Returns:

List of entity IDs. If no entity could be found for a UUID in the list, it will be omitted.

getIdFromUUID

public static final Long getIdFromUUID(IEntityContext ec,
                                       UUID uuid,
                                       Object context,
                                       Class<?> entityClass)

Translates an entity UUID to its corresponding ID if it exists

Parameters:

ec - IEntityContext to use

uuid - String entity UUID

context - Object entity to use as context

entityClass - Class of the entity

Returns:

Long ID of the entity if it exists. Otherwise null

getEntities

public static final <T extends de.xima.cmn.dao.interfaces.IEntity<Long>> List<T> getEntities(IEntityContext ec,
                                                                                             List<UUID> uuids,
                                                                                             Object context,
                                                                                             Class<T> entityClass)

getEntity

public static final <T extends de.xima.cmn.dao.interfaces.IEntity<Long>> T getEntity(IEntityContext ec,
                                                                                     UUID uuid,
                                                                                     Object context,
                                                                                     Class<T> entityClass)

Gets the entity with the given UUID in the given context

Type Parameters:

T - the entity type

Parameters:

ec - IEntityContext to use

uuid - String entity UUID

context - Object entity to use as context

entityClass - Class of the entity

Returns:

the found entity

getUuidContextValue

public static final Object getUuidContextValue(de.xima.cmn.dao.interfaces.IEntity<Long> contextEntity,
                                               Class<?> entityClass)

loadPersistedEntity

public static final <T extends de.xima.cmn.dao.interfaces.IEntity<Long>> T loadPersistedEntity(IEntityContext ec,
                                                                                               T entity)

Returns entity that is persisted in the database (fully initialized) based on its UUID and CONTEXT (client, project, ...)

Type Parameters:

T - IEntity base entity interface

Parameters:

ec - IEntityContext to be used

entity - IEntity to check if it exists in the database

Returns:

IEntity that is persisted in the database or null if none could be found

merge

public static final <T extends de.xima.cmn.dao.interfaces.IEntity<Long>> T merge(IEntityContext ec,
                                                                                 T entity,
                                                                                 T persisted)