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package javax.ejb;

import java.util.*;
import java.security.Identity;
import java.security.Principal;
import javax.transaction.UserTransaction;

/**
 * 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. * */ public interface EJBContext { /** * Obtain the enterprise bean's remote home interface. * * @return The enterprise bean's remote home interface. * * @exception java.lang.IllegalStateException if the enterprise bean * does not have a remote home interface. */ EJBHome getEJBHome(); /** * Obtain the enterprise bean's local home interface. * * @return The enterprise bean's local home interface. * * @exception java.lang.IllegalStateException if the enterprise bean * does not have a local home interface. */ EJBLocalHome getEJBLocalHome(); /** * Obtain the enterprise bean's environment properties. * *

Note: If the enterprise bean has no environment properties * this method returns an empty java.util.Properties object. This method * never returns null. * * @return The environment properties for the enterprise bean. * * @deprecated Use the JNDI naming context java:comp/env to access * enterprise bean's environment. */ Properties getEnvironment(); /** * Obtain the java.security.Identity of the caller. * * This method is deprecated in EJB 1.1. The Container * is allowed to return alway null from this method. The enterprise * bean should use the getCallerPrincipal method instead. * * @return The Identity object that identifies the caller. * * @deprecated Use Principal getCallerPrincipal() instead. */ Identity getCallerIdentity(); /** * Obtain the java.security.Principal that identifies the caller. * * @return The Principal object that identifies the caller. This * method never returns null. * * @exception IllegalStateException The Container throws the exception * if the instance is not allowed to call this method. */ Principal getCallerPrincipal(); /** * Test if the caller has a given role. * *

This method is deprecated in EJB 1.1. The enterprise bean * should use the isCallerInRole(String roleName) method instead. * * @param role The java.security.Identity of the role to be tested. * * @return True if the caller has the specified role. * * @deprecated Use boolean isCallerInRole(String roleName) instead. */ boolean isCallerInRole(Identity role); /** * Test if the caller has a given security role. * * @param roleName The name of the security role. The role must be one of * the security roles that is defined in the deployment descriptor. * * @return True if the caller has the specified role. * * @exception IllegalStateException The Container throws the exception * if the instance is not allowed to call this method. */ boolean isCallerInRole(String roleName); /** * 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. * * @return The UserTransaction interface that the enterprise bean * instance can use for transaction demarcation. * * @exception 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). */ UserTransaction getUserTransaction() 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. * * @exception 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). */ void setRollbackOnly() 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. * * @return True if the current transaction is marked for rollback, false * otherwise. * * @exception 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). */ boolean getRollbackOnly() throws IllegalStateException; /** * Get access to the EJB Timer Service. * * @exception 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) */ TimerService getTimerService() throws IllegalStateException; /** * Lookup a resource within the component's private naming context. * * @param name Name of the entry (relative to java:comp/env). * * @exception IllegalArgumentException The Container throws the exception * if the given name does not match an entry within the component's * environment. */ Object lookup(String name); }





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