jakarta.ejb

Interface EJBContext

All Known Subinterfaces:

EntityContext, MessageDrivenContext, SessionContext

public interface EJBContext

The EJBContext interface provides an instance with access to the container-provided runtime context of an enterprise bean instance.

This interface is extended by the SessionContext, EntityContext, and MessageDrivenContext interfaces to provide additional methods specific to the enterprise interface bean type.

Since:

EJB 1.0

See Also:

SessionContext, MessageDrivenContext, EntityContext

Method Summary

Modifier and Type	Method and Description
Principal	getCallerPrincipal() Obtain the java.security.Principal that identifies the caller.
Map<String,Object>	getContextData() The getContextData method enables a business method, lifecycle callback method, or timeout method to retrieve any interceptor/webservices context associated with its invocation.
EJBHome	getEJBHome() Obtain the enterprise bean's remote home interface.
EJBLocalHome	getEJBLocalHome() Obtain the enterprise bean's local home interface.
boolean	getRollbackOnly() Test if the transaction has been marked for rollback only.
TimerService	getTimerService() Get access to the enterprise bean Timer Service.
jakarta.transaction.UserTransaction	getUserTransaction() Obtain the transaction demarcation interface.
boolean	isCallerInRole(String roleName) Test if the caller has a given security role.
Object	lookup(String name) Lookup a resource within the java: namespace.
void	setRollbackOnly() Mark the current transaction for rollback.

Method Detail

getEJBHome

EJBHome getEJBHome()
            throws IllegalStateException

Obtain the enterprise bean's remote home interface.

Returns:

The enterprise bean's remote home interface.

Throws:

IllegalStateException - if the enterprise bean does not have a remote home interface.

getEJBLocalHome

EJBLocalHome getEJBLocalHome()
                      throws IllegalStateException

Obtain the enterprise bean's local home interface.

Returns:

The enterprise bean's local home interface.

Throws:

IllegalStateException - if the enterprise bean does not have a local home interface.

Since:

EJB 2.0

getCallerPrincipal

Principal getCallerPrincipal()
                      throws IllegalStateException

Obtain the java.security.Principal that identifies the caller.

Returns:

The Principal object that identifies the caller. This method never returns null.

Throws:

IllegalStateException - The Container throws the exception if the instance is not allowed to call this method.

Since:

EJB 1.1

isCallerInRole

boolean isCallerInRole(String roleName)
                throws IllegalStateException

Test if the caller has a given security role.

Parameters:

roleName - The name of the security role. The role must be one of the security roles that is defined in the deployment descriptor.

Returns:

True if the caller has the specified role.

Throws:

IllegalStateException - The Container throws the exception if the instance is not allowed to call this method.

Since:

EJB 1.1

getUserTransaction

jakarta.transaction.UserTransaction getUserTransaction()
                                                throws IllegalStateException

Obtain the transaction demarcation interface. Only enterprise beans with bean-managed transactions are allowed to to use the UserTransaction interface. As entity beans must always use container-managed transactions, only session beans or message-driven beans with bean-managed transactions are allowed to invoke this method.

Returns:

The UserTransaction interface that the enterprise bean instance can use for transaction demarcation.

Throws:

IllegalStateException - The Container throws the exception if the instance is not allowed to use the UserTransaction interface (i.e. the instance is of a bean with container-managed transactions).

setRollbackOnly

void setRollbackOnly()
              throws IllegalStateException

Mark the current transaction for rollback. The transaction will become permanently marked for rollback. A transaction marked for rollback can never commit. Only enterprise beans with container-managed transactions are allowed to use this method.

Throws:

IllegalStateException - The Container throws the exception if the instance is not allowed to use this method (i.e. the instance is of a bean with bean-managed transactions).

getRollbackOnly

boolean getRollbackOnly()
                 throws IllegalStateException

Test if the transaction has been marked for rollback only. An enterprise bean instance can use this operation, for example, to test after an exception has been caught, whether it is fruitless to continue computation on behalf of the current transaction. Only enterprise beans with container-managed transactions are allowed to use this method.

Returns:

True if the current transaction is marked for rollback, false otherwise.

Throws:

IllegalStateException - The Container throws the exception if the instance is not allowed to use this method (i.e. the instance is of a bean with bean-managed transactions).

getTimerService

TimerService getTimerService()
                      throws IllegalStateException

Get access to the enterprise bean Timer Service.

Returns:

a TimerService object.

Throws:

IllegalStateException - The Container throws the exception if the instance is not allowed to use this method (e.g. if the bean is a stateful session bean)

Since:

EJB 2.1

lookup

Object lookup(String name)
       throws IllegalArgumentException

Lookup a resource within the java: namespace. Names referring to entries within the private component namespace can be passed as unqualified strings. In that case the lookup will be relative to "java:comp/env/". For example, assuming an enterprise bean defines an ejb-local-ref with ejb-ref-name "ejb/BarRef" the following two calls to EJBContext.lookup are equivalent : ejbContext.lookup("ejb/BarRef"); ejbContext.lookup("java:comp/env/ejb/BarRef");

Parameters:

name - Name of the entry

Returns:

a Object object.

Throws:

IllegalArgumentException - The Container throws the exception if the given name does not match an entry within the component's environment.

Since:

EJB 3.0

getContextData

Map<String,Object> getContextData()

The getContextData method enables a business method, lifecycle callback method, or timeout method to retrieve any interceptor/webservices context associated with its invocation.

Returns:

the context data that interceptor context associated with this invocation. If there is no context data, an empty Map<String,Object> object will be returned.

Since:

EJB 3.1