java.lang.Object

de.xima.fc.file.GenericFileDao

All Implemented Interfaces:: IGenericFileDao

public class GenericFileDao extends Object implements IGenericFileDao

Constructor Summary

Constructors

Constructor

Description

GenericFileDao()
Method Summary

Modifier and Type

Method

Description

<D extends IFileDataEntity<F>, F extends IKeyDependentFileEntity<E, D>, E extends IFileMapProviding<F, D>> byte[]

getFileData(IEntityContext ec, E entity, String fileKey)

Returns the file data of a file belonging to the given entity with the given file key.

<E extends IFileDataEntity<?>, T extends IFileProviding<?, E>> byte[]

getFileData(IEntityContext ec, Class<T> clazz, long id)

Returns the file data of a file entity.

<E extends IFileDataEntity<?>, T extends IFileProviding<?, E>> byte[]

getFileData(IEntityContext ec, T entity)

Returns the file data of a file entity.

<D extends IFileDataEntity<F>, F extends IKeyDependentFileEntity<E, D>, E extends IFileMapProviding<F, D>> D

getFileDataEntity(IEntityContext ec, E entity, String fileKey)

Returns the file data entity of a file belonging to the given entity with the given file key.

<E extends IFileDataEntity<?>, T extends IFileEntity<?, E>> E

getFileDataEntity(IEntityContext ec, T entity)

Get the file data entity for a given file entity.

<T extends IFileEntity<?, ?>> byte[]

getFileEntityData(IEntityContext ec, T fileEntity)

Gets the data of the given file entity as an in-memory byte array.

<T extends IFileEntity<?, ?>> InputStream

getFileEntityStream(IEntityContext ec, T entity)

Gets the data of the given file entity as an input stream.

<D extends IFileDataEntity<F>, F extends IKeyDependentFileEntity<E, D>, E extends IFileMapProviding<F, D>> InputStream

getFileStream(IEntityContext ec, E entity, String fileKey)

Returns the file data of a file belonging to the given entity with the given file key, as an input stream.

<E extends IFileDataEntity<?>, T extends IFileProviding<?, E>> InputStream

getFileStream(IEntityContext ec, T entity)

<E extends IFileDataEntity<?>, T extends IFileEntity<?, E>> T

updateFileData(IEntityContext ec, T entity, byte[] data)

Replaces the data of the given file entity with the new data.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details
- GenericFileDao
  
  public GenericFileDao()
Method Details
- getFileData
  
  public <E extends IFileDataEntity<?>, T extends IFileProviding<?, E>> byte[] getFileData(IEntityContext ec, Class<T> clazz, long id)
  
  Description copied from interface: IGenericFileDao
  
  Returns the file data of a file entity.
  Use with care! As the name suggests, this holds the entire file data in memory. Prefer using an input stream instead.
  
  Specified by:
  
  getFileData in interface IGenericFileDao
  
  Type Parameters:
  
  E - Type of the entity with the file data.
  
  T - Type of the entity with the file meta data.
  
  Parameters:
  
  ec - Entity context for database transactions.
  
  clazz - Type of the file entity with the file meta data.
  
  id - ID of the file entity with the file meta data.
  
  Returns:
  
  The file content as a byte array, or null when no file content was found.
- getFileData
  
  public <E extends IFileDataEntity<?>, T extends IFileProviding<?, E>> byte[] getFileData(IEntityContext ec, T entity)
  
  Description copied from interface: IGenericFileDao
  
  Returns the file data of a file entity.
  Use with care! As the name suggests, this holds the entire file data in memory. Prefer using an input stream instead.
  
  Specified by:
  
  getFileData in interface IGenericFileDao
  
  Type Parameters:
  
  E - Type of the entity with the file data.
  
  T - Type of the entity with the file meta data.
  
  Parameters:
  
  ec - Entity context for database transactions.
  
  entity - File entity with the file meta data.
  
  Returns:
  
  The file content as a byte array.
- getFileData
  
  public <D extends IFileDataEntity<F>, F extends IKeyDependentFileEntity<E, D>, E extends IFileMapProviding<F, D>> byte[] getFileData(IEntityContext ec, E entity, String fileKey)
  
  Description copied from interface: IGenericFileDao
  
  Returns the file data of a file belonging to the given entity with the given file key.
  Use with care! As the name suggests, this holds the entire file data in memory. Prefer using an input stream instead.
  
  Specified by:
  
  getFileData in interface IGenericFileDao
  
  Type Parameters:
  
  D - file data entity type
  
  F - file entity type
  
  E - file map providing base entity type
  
  Parameters:
  
  ec - entity context for database transactions.
  
  entity - that owns the file
  
  fileKey - Key identifying the the file to retrieve.
  
  Returns:
  
  The file data as a byte array.
- getFileStream
  
  public <D extends IFileDataEntity<F>, F extends IKeyDependentFileEntity<E, D>, E extends IFileMapProviding<F, D>> InputStream getFileStream(IEntityContext ec, E entity, String fileKey)
  
  Description copied from interface: IGenericFileDao
  
  Returns the file data of a file belonging to the given entity with the given file key, as an input stream.
  
  Specified by:
  
  getFileStream in interface IGenericFileDao
  
  Type Parameters:
  
  D - file data entity type
  
  F - file entity type
  
  E - file map providing base entity type
  
  Parameters:
  
  ec - entity context for database transactions.
  
  entity - that owns the file
  
  fileKey - Key identifying the the file to retrieve.
  
  Returns:
  
  The file data as an input stream.
- getFileEntityData
  
  public <T extends IFileEntity<?, ?>> byte[] getFileEntityData(IEntityContext ec, T fileEntity)
  
  Description copied from interface: IGenericFileDao
  
  Gets the data of the given file entity as an in-memory byte array.
  Use with care! As the name suggests, this holds the entire file data in memory. Prefer using an input stream instead.
  
  Specified by:
  
  getFileEntityData in interface IGenericFileDao
  
  Type Parameters:
  
  T - Type of the file entity with the data.
  
  Parameters:
  
  ec - Entity context for database transactions.
  
  fileEntity - File entity with the data.
  
  Returns:
  
  The data as a byte array, or null if no data exists.
- updateFileData
  
  public <E extends IFileDataEntity<?>, T extends IFileEntity<?, E>> T updateFileData(IEntityContext ec, T entity, byte[] data)
  
  Description copied from interface: IGenericFileDao
  
  Replaces the data of the given file entity with the new data.
  
  Specified by:
  
  updateFileData in interface IGenericFileDao
  
  Type Parameters:
  
  E - Type of the entity with the file data.
  
  T - Type of the entity with the file meta data.
  
  Parameters:
  
  ec - Entity context for database transactions.
  
  entity - File entity with the file meta data.
  
  data - New data to set.
  
  Returns:
  
  The updated file entity.
- getFileDataEntity
  
  public <E extends IFileDataEntity<?>, T extends IFileEntity<?, E>> E getFileDataEntity(IEntityContext ec, T entity)
  
  Description copied from interface: IGenericFileDao
  
  Get the file data entity for a given file entity. The entity is read from the database if it is detached.
  
  Specified by:
  
  getFileDataEntity in interface IGenericFileDao
  
  Type Parameters:
  
  E - Type of the entity with the file data.
  
  T - Type of the entity with the file meta data.
  
  Parameters:
  
  ec - Entity context for database transactions.
  
  entity - File entity with the file meta data.
  
  Returns:
  
  The file data entity for the given file entity.
- getFileDataEntity
  
  public <D extends IFileDataEntity<F>, F extends IKeyDependentFileEntity<E, D>, E extends IFileMapProviding<F, D>> D getFileDataEntity(IEntityContext ec, E entity, String fileKey)
  
  Description copied from interface: IGenericFileDao
  
  Returns the file data entity of a file belonging to the given entity with the given file key.
  
  Specified by:
  
  getFileDataEntity in interface IGenericFileDao
  
  Type Parameters:
  
  D - file data entity type
  
  F - file entity type
  
  E - file map providing base entity type
  
  Parameters:
  
  ec - Entity context for database transactions.
  
  entity - that owns the file
  
  fileKey - key identifying the the file entity
  
  Returns:
  
  file data entity containing the data of the request file.
- getFileStream
  
  public <E extends IFileDataEntity<?>, T extends IFileProviding<?, E>> InputStream getFileStream(IEntityContext ec, T entity)
  
  Specified by:
  
  getFileStream in interface IGenericFileDao
  
  Type Parameters:
  
  E - Type of the entity with the file data.
  
  T - Type of the entity with the file meta data.
  
  Parameters:
  
  ec - Entity context for database transactions.
  
  entity - File entity with the file meta data.
  
  Returns:
  
  The data of the file entity as an input stream, or null when no data exists.
- getFileEntityStream
  
  public <T extends IFileEntity<?, ?>> InputStream getFileEntityStream(IEntityContext ec, T entity)
  
  Description copied from interface: IGenericFileDao
  
  Gets the data of the given file entity as an input stream.
  
  Specified by:
  
  getFileEntityStream in interface IGenericFileDao
  
  Parameters:
  
  ec - Entity context for database transactions.
  
  entity - File entity with the data.
  
  Returns:
  
  The data as an input stream, or null if no data exists.

Class GenericFileDao

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Details

GenericFileDao

Method Details

getFileData

getFileData

getFileData

getFileStream

getFileEntityData

updateFileData

getFileDataEntity

getFileDataEntity

getFileStream

getFileEntityStream