DataFactory

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org.jeteam.bean.common
Class DataFactory

java.lang.Object
  org.jeteam.bean.common.DataFactory

public class DataFactory
extends java.lang.Object

The DataFactory is a utility class that centralizes the code that converts a client's data transfer objects (DTOs) into value objects from the domain. DTOs are the client-side view of the actual entity beans, please note they only hold the persisted state of the corresponding entity bean, not the relationships with other beans. Since a service may need to work with several entity beans it is therefore necessary to centralize the code to create these Value Objects, otherwise we risk having duplicate code spread over the services. This class is designed to do exactly that.

As an extra there are method provided that will convert a collection of value objects into a collection of Value Objects.

For better performance there are also some methods that allow working with arrays rather than Collection instances, A Collection implies a cast for each element, this typically is slow and error-prone. Arrays are type-safe. The DataFactory is instantiated using the getInstance() method, there is no public constructor available.

There is also a Factory that works in the other direction: DTOFactory

Field Summary

private static DataFactory factory


Constructor Summary

private DataFactory()
          The constructor is not publicly available as part of the Singleton design pattern, use getInstance() instead.

Method Summary

NoteData createData(org.jeteam.bean.task.NoteDTO dataTransferObject)
          Converts a data transfer object into a value object.

NoteData[] createData(org.jeteam.bean.task.NoteDTO[] dtos)
          Converts an array of NoteDTO instances into NoteData instances.

PriorityData createData(org.jeteam.bean.config.PriorityDTO dataTransferObject)
          Converts a data transfer object into a value object.

PriorityData[] createData(org.jeteam.bean.config.PriorityDTO[] dtos)
          Converts an array of PriorityDTO instances into PriorityData instances.

PrivilegeData createData(org.jeteam.bean.security.PrivilegeDTO dataTransferObject)
          Converts a data transfer object into a value object.

PrivilegeData[] createData(org.jeteam.bean.security.PrivilegeDTO[] dtos)
          Converts an array of PrivilegeDTO instances into PrivilegeData instances.

ProjectData createData(org.jeteam.bean.project.ProjectDTO dataTransferObject)
          Converts a data transfer object into a value object.

ProjectData[] createData(org.jeteam.bean.project.ProjectDTO[] dtos)
          Converts an array of ProjectDTO instances into ProjectData instances.

RoleData createData(org.jeteam.bean.security.RoleDTO dataTransferObject)
          Converts a data transfer object into a value object.

RoleData[] createData(org.jeteam.bean.security.RoleDTO[] dtos)
          Converts an array of RoleDTO instances into RoleData instances.

SettingData createData(org.jeteam.bean.config.SettingDTO dataTransferObject)
          Converts a data transfer object into a value object.

SettingData[] createData(org.jeteam.bean.config.SettingDTO[] dtos)
          Converts an array of SettingDTO instances into SettingData instances.

StatusData createData(org.jeteam.bean.config.StatusDTO dataTransferObject)
          Converts a data transfer object into a value object.

StatusData[] createData(org.jeteam.bean.config.StatusDTO[] dtos)
          Converts an array of StatusDTO instances into StatusData instances.

TaskData createData(org.jeteam.bean.task.TaskDTO dataTransferObject)
          Converts a data transfer object into a value object.

TaskData[] createData(org.jeteam.bean.task.TaskDTO[] dtos)
          Converts an array of TaskDTO instances into TaskData instances.

UserData createData(org.jeteam.bean.user.UserDTO dataTransferObject)
          Converts a data transfer object into a value object.

UserData[] createData(org.jeteam.bean.user.UserDTO[] dtos)
          Converts an array of UserDTO instances into UserData instances.

java.util.Collection createNoteDataCollection(java.util.Collection noteDTOs)
          Converts a Collection containing data transfer objects into a Collection of value objects.

java.util.Collection createPriorityDataCollection(java.util.Collection priorityDTOs)
          Converts a Collection containing data transfer objects into a Collection of value objects.

java.util.Collection createPrivilegeDataCollection(java.util.Collection privilegeDTOs)
          Converts a Collection containing data transfer objects into a Collection of value objects.

java.util.Collection createProjectDataCollection(java.util.Collection projectDTOs)
          Converts a Collection containing data transfer objects into a Collection of value objects.

java.util.Collection createRoleDataCollection(java.util.Collection roleDTOs)
          Converts a Collection containing data transfer objects into a Collection of value objects.

java.util.Collection createSettingDataCollection(java.util.Collection settingDTOs)
          Converts a Collection containing data transfer objects into a Collection of value objects.

java.util.Collection createStatusDataCollection(java.util.Collection statusDTOs)
          Converts a Collection containing data transfer objects into a Collection of value objects.

java.util.Collection createTaskDataCollection(java.util.Collection taskDTOs)
          Converts a Collection containing data transfer objects into a Collection of value objects.

java.util.Collection createUserDataCollection(java.util.Collection userDTOs)
          Converts a Collection containing DTOs into a Collection of value objects.

static DataFactory getInstance()
          This method is designed to always return the same DataFactory instance, it is using a lazy creation strategy where the factory is created the first time the actual call to this method is made, al subsequent calls return the previously created DataFactory instance.

Methods inherited from class java.lang.Object

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

Field Detail

factory

private static DataFactory factory

Constructor Detail

DataFactory

private DataFactory()

The constructor is not publicly available as part of the Singleton design pattern, use getInstance() instead.

Method Detail

getInstance

public static DataFactory getInstance()

This method is designed to always return the same DataFactory instance, it is using a lazy creation strategy where the factory is created the first time the actual call to this method is made, al subsequent calls return the previously created DataFactory instance.