javax.ejb API 3.2.2 · javax.ejb.EntityContext

The EntityContext interface provides an instance with access to the container-provided runtime context of an entity bean instance. The container passes the EntityContext interface to an entity bean instance after the instance has been created.

The EntityContext interface remains associated with the instance for the lifetime of the instance. Note that the information that the instance obtains using the EntityContext interface (such as the result of the getPrimaryKey() method) may change, as the container assigns the instance to different EJB objects during the instance's life cycle.

Note

Support for entity beans is optional as of EJB 3.2.

Method Summary

Modifier and Type	Method and Description
public EJBLocalObject	Returns: The EJB local object currently associated with the instance. getEJBLocalObject() Obtain a reference to the EJB local object that is currently associated with the instance.
public EJBObject	Returns: The EJB object currently associated with the instance. getEJBObject() Obtain a reference to the EJB object that is currently associated with the instance.
public Object	Returns: The primary key currently associated with the instance. getPrimaryKey() Obtain the primary key of the EJB object that is currently associated with this instance.

Inherited from javax.ejb.EJBContext:: getCallerIdentity getCallerPrincipal getContextData getEJBHome getEJBLocalHome getEnvironment getRollbackOnly getTimerService getUserTransaction isCallerInRole isCallerInRole lookup setRollbackOnly

Method Detail

getEJBLocalObject	back to summary
public EJBLocalObject getEJBLocalObject() throws IllegalStateException Obtain a reference to the EJB local object that is currently associated with the instance. An instance of an entity bean can call this method only when the instance is associated with an EJB local object identity, i.e. in the ejbActivate, ejbPassivate, ejbPostCreate, ejbRemove, ejbLoad, ejbStore, and business methods. An instance can use this method, for example, when it wants to pass a reference to itself in a method argument or result. Returns:EJBLocalObject The EJB local object currently associated with the instance. Exceptions IllegalStateException: if the instance invokes this method while the instance is in a state that does not allow the instance to invoke this method, or if the instance does not have a local interface. Since EJB 2.0

getEJBLocalObject

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public EJBLocalObject getEJBLocalObject() throws IllegalStateException

Obtain a reference to the EJB local object that is currently associated with the instance.

An instance of an entity bean can call this method only when the instance is associated with an EJB local object identity, i.e. in the ejbActivate, ejbPassivate, ejbPostCreate, ejbRemove, ejbLoad, ejbStore, and business methods.

An instance can use this method, for example, when it wants to pass a reference to itself in a method argument or result.

Returns:EJBLocalObject

The EJB local object currently associated with the instance.

Exceptions

IllegalStateException:: if the instance invokes this method while the instance is in a state that does not allow the instance to invoke this method, or if the instance does not have a local interface.

Since

EJB 2.0

getEJBObject	back to summary
public EJBObject getEJBObject() throws IllegalStateException Obtain a reference to the EJB object that is currently associated with the instance. An instance of an entity bean can call this method only when the instance is associated with an EJB object identity, i.e. in the ejbActivate, ejbPassivate, ejbPostCreate, ejbRemove, ejbLoad, ejbStore, and business methods. An instance can use this method, for example, when it wants to pass a reference to itself in a method argument or result. Returns:EJBObject The EJB object currently associated with the instance. Exceptions IllegalStateException: Thrown if the instance invokes this method while the instance is in a state that does not allow the instance to invoke this method, or if the instance does not have a remote interface.

getEJBObject

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public EJBObject getEJBObject() throws IllegalStateException

Obtain a reference to the EJB object that is currently associated with the instance.

An instance of an entity bean can call this method only when the instance is associated with an EJB object identity, i.e. in the ejbActivate, ejbPassivate, ejbPostCreate, ejbRemove, ejbLoad, ejbStore, and business methods.

An instance can use this method, for example, when it wants to pass a reference to itself in a method argument or result.

Returns:EJBObject

The EJB object currently associated with the instance.

Exceptions

IllegalStateException:: Thrown if the instance invokes this method while the instance is in a state that does not allow the instance to invoke this method, or if the instance does not have a remote interface.

getPrimaryKey	back to summary
public Object getPrimaryKey() throws IllegalStateException Obtain the primary key of the EJB object that is currently associated with this instance. An instance of an entity bean can call this method only when the instance is associated with an EJB object identity, i.e. in the ejbActivate, ejbPassivate, ejbPostCreate, ejbRemove, ejbLoad, ejbStore, and business methods. Note The result of this method is that same as the result of getEJBObject().getPrimaryKey(). Returns:Object The primary key currently associated with the instance. Exceptions IllegalStateException: Thrown if the instance invokes this method while the instance is in a state that does not allow the instance to invoke this method.

getPrimaryKey

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public Object getPrimaryKey() throws IllegalStateException

Obtain the primary key of the EJB object that is currently associated with this instance.

Note

The result of this method is that same as the result of getEJBObject().getPrimaryKey().

Returns:Object

The primary key currently associated with the instance.

Exceptions

IllegalStateException:: Thrown if the instance invokes this method while the instance is in a state that does not allow the instance to invoke this method.

public Interface EntityContext

Method Summary

Method Detail