generalfailureexception.java

一个优秀的供应商管理系统

package apusic.myshop.control;



import java.rmi.RemoteException;
import javax.naming.NamingException;
import javax.ejb.CreateException;
import javax.ejb.EJBException;
import java.sql.SQLException;

/**
* This exception is thrown for all problems that occur in the EJB
* Container code of the sample application. This class defines a few
* typical error types to help the developer find the error
* cause.
*/
public class GeneralFailureException extends EJBException
    implements java.io.Serializable {

    private String cause;
    public static final String COMM_FAILURE = "RMI/IIOP problem";
    public static final String EJB_CREATION_FAILURE = "EJB creation problem";
    public static final String JNDI_PROBLEMS = "JNDI problem";
    public static final String DB_PROBLEMS = "Database problem";

    public GeneralFailureException(String cause) {
	    super(cause);
	    this.cause = cause;
    }

    public GeneralFailureException(Exception e) {
	    super(e);
	    if (e instanceof NamingException) {
	        this.cause = JNDI_PROBLEMS;
	    } else if (e instanceof SQLException) {
	        this.cause = DB_PROBLEMS;
	    } else if (e instanceof CreateException) {
	        this.cause = EJB_CREATION_FAILURE;
	    } else if (e instanceof RemoteException) {
	        this.cause = COMM_FAILURE;
	    } else {
            this.cause = e.toString();
      }
    }

    public String getCause() {
	    return cause;
    }
}