com.sap.cloud.server.odata

Class EntityListener

java.lang.Object

com.sap.cloud.server.odata.EntityListener

Direct Known Subclasses:

DefaultEntityListener

public abstract class EntityListener
extends java.lang.Object

Callback interface for CRUD (create/read/update/delete) operations on entities. Callback functions may be used to implement row-level or column-level security, data cleansing, data validation, or triggering of corresponding changes in other entities.

Constructor Summary

Constructors

Constructor and Description
EntityListener()

Method Summary

Modifier and Type	Method and Description
void	afterCreate(EntityValue entity) Invoked after an entity is created.
void	afterDelete(EntityValue entity) Invoked after an entity is deleted.
void	afterUpdate(EntityValue entity) Invoked after an entity is updated.
void	afterUpload(EntityValue entity, StreamLink link) Invoked after a stream is uploaded.
void	allowUnused(java.lang.Object value) Helper function so generated subclasses can explicitly ignore a value.
void	beforeCreate(EntityValue entity) Invoked before an entity is created.
void	beforeDelete(EntityValue entity) Invoked before an entity is deleted.
void	beforeDownload(EntityValue entity, StreamLink link) Invoked before a stream is downloaded.
void	beforeQuery(DataQuery query) Invoked before a query is executed.
void	beforeUpdate(EntityValue entity) Invoked before an entity is updated.
void	beforeUpload(EntityValue entity, StreamLink link) Invoked before a stream is uploaded.

Methods inherited from class java.lang.Object

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

Constructor Detail

EntityListener

public EntityListener()

Method Detail

afterCreate

public void afterCreate(EntityValue entity)

Invoked after an entity is created.

Parameters:

entity - Entity value.

afterDelete

public void afterDelete(EntityValue entity)

Invoked after an entity is deleted.

Parameters:

entity - Entity value.

afterUpdate

public void afterUpdate(EntityValue entity)

Invoked after an entity is updated.

Parameters:

entity - Entity value.

afterUpload

public void afterUpload(EntityValue entity,
                        StreamLink link)

Invoked after a stream is uploaded.

See Also:

EntityValue.mediaStream, for media entities.

Parameters:

entity - Entity value.

link - Stream link.

allowUnused

public void allowUnused(java.lang.Object value)

Helper function so generated subclasses can explicitly ignore a value.

Parameters:

value - Value to be ignored.

beforeCreate

public void beforeCreate(EntityValue entity)

Invoked before an entity is created.

Parameters:

entity - Entity value.

beforeDelete

public void beforeDelete(EntityValue entity)

Invoked before an entity is deleted.

Parameters:

entity - Entity value.

beforeDownload

public void beforeDownload(EntityValue entity,
                           StreamLink link)

Invoked before a stream is downloaded.

See Also:

EntityValue.mediaStream, for media entities.

Parameters:

entity - Entity value.

link - Stream link.

beforeQuery

public void beforeQuery(DataQuery query)

Invoked before a query is executed. Modifying the query (e.g. by adding additional filter conditions) may be useful, especially for the implementation of row-level security.

Parameters:

query - Data query.

beforeUpdate

public void beforeUpdate(EntityValue entity)

Invoked before an entity is updated.

Parameters:

entity - Entity value.

beforeUpload

public void beforeUpload(EntityValue entity,
                         StreamLink link)

Invoked before a stream is uploaded.

See Also:

EntityValue.mediaStream, for media entities.

Parameters:

entity - Entity value.

link - Stream link.