com.sleepycat.je

Class DatabaseException

java.lang.Object

java.lang.Throwable

java.lang.Exception

java.lang.RuntimeException

com.sleepycat.je.DatabaseException

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

OperationFailureException, RunRecoveryException

public abstract class DatabaseException
extends java.lang.RuntimeException

The root of all BDB JE-defined exceptions.

Exceptions thrown by BDB JE fall into three categories.

1. When a method is used incorrectly as the result of an application programming error, a standard Java runtime exception is thrown: IllegalArgumentException, IllegalStateException or UnsupportedOperationException. These exceptions have the standard meaning defined by their javadoc. Note that JE throws IllegalArgumentException rather than NullPointerException when a required parameter is null.
2. When an operation failure occurs, OperationFailureException or one of its subclasses is thrown. See OperationFailureException for details.
3. When an Environment failure occurs, EnvironmentFailureException or one of its subclasses is thrown. See EnvironmentFailureException for details.

OperationFailureException and EnvironmentFailureException are the only two direct subclasses of DatabaseException.

(Actually the above statement is not strictly correct. EnvironmentFailureException extends RunRecoveryException which extends DatabaseException. RunRecoveryException exists for backward compatibility and has been deprecated. EnvironmentFailureException should be used instead.)

Note that in some cases, certain methods return status values without issuing an exception. This occurs in situations that are not normally considered an error, but when some informational status is returned. For example, Database.get returns OperationStatus.NOTFOUND when a requested key does not appear in the database.

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
java.lang.String	getMessage()

Methods inherited from class java.lang.Throwable

addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

getMessage

public java.lang.String getMessage()

Overrides:

getMessage in class java.lang.Throwable