javax.ejb.EJBContext Maven / Gradle / Ivy

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package javax.ejb;

import java.security.Identity;
import java.security.Principal;
import java.util.Map;
import java.util.Properties;

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 and EntityContext
 * interface to provide additional methods specific to the enterprise
 * Bean type.
 * @version $Revision$
 */
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.
   */
  public 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.
   */
  public EJBLocalHome getEJBLocalHome();

  /**
   * Deprecated. Use the JNDI naming context java:comp/env to access enterprise bean's environment.
   *
   * 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.
   */
  public Properties getEnvironment();

   /**
    * Deprecated. Use Principal getCallerPrincipal() instead.
    *
    * 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.
    */
   public Identity getCallerIdentity();

   /**
    * Obtains the java.security.Principal of the caller.
    *
    * @return The Principal object that identifies the caller. This method never returns null.
    */
   public Principal getCallerPrincipal();

   /**
    * Returns the context data associated with this invocation or lifecycle callback. If there
    * is no context data, an empty Map object will be returned. 
    * @return Context data or empty map.
    * @since 3.1
    */
   Map getContextData();
   
   /**
    * Deprecated. Use boolean isCallerInRole(String roleName) instead.
    *
    * 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.
    */
   public boolean isCallerInRole(Identity role);

   /**
    * Tests if the caller has a given 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.
    */
   public 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 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 java.lang.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).
   */
  public 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 java.lang.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).
   */
  public 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 java.lang.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).
    */
   public 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)
    */
   public 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).
    * @throws IllegalArgumentException - The Container throws the exception if
    * the given name does not match an entry within the component's environment.
    */
   public Object lookup(String name) throws IllegalArgumentException;
   
}