java.lang.Object
org.apache.derby.iapi.services.context.ContextImpl
org.apache.derby.impl.services.monitor.ServiceBootContext
- All Implemented Interfaces:
- org.apache.derby.iapi.services.context.Context
- class ServiceBootContext
- extends org.apache.derby.iapi.services.context.ContextImpl
A context that is used during a service boot to
stop cleanup on the stack at this point.
| Fields inherited from class org.apache.derby.iapi.services.context.ContextImpl |
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Method Summary |
void |
cleanupOnError(java.lang.Throwable t)
Contexts will be passed errors that are caught
by the outer system when they are serious enough
to require corrective action. |
boolean |
isLastHandler(int severity)
Return whether or not this context is the "last" handler for a
the specified severity level. |
| Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
ServiceBootContext
ServiceBootContext(org.apache.derby.iapi.services.context.ContextManager cm)
cleanupOnError
public void cleanupOnError(java.lang.Throwable t)
- Description copied from interface:
org.apache.derby.iapi.services.context.Context
- Contexts will be passed errors that are caught
by the outer system when they are serious enough
to require corrective action. They will be told
what the error is, so that they can react appropriately.
Most of the time, the contexts will react by either
doing nothing or by removing themselves from the
context manager. If there are no other references
to the context, removing itself from the manager
equates to freeing it.
Contexts must release all their resources before
removing themselves from their context manager.
The context manager
will "unwind" the contexts during cleanup in the
reverse order they were placed on its global stack.
If error is an instance of StandardException then an implementation
of this method may throw a new exception if and only if the new exception
is an instance of StandardException that is more severe than the original error
or the new exception is a not an instance of StandardException (e.g java.lang.NullPointerException).
isLastHandler
public boolean isLastHandler(int severity)
- Description copied from interface:
org.apache.derby.iapi.services.context.Context
- Return whether or not this context is the "last" handler for a
the specified severity level. Previously, the context manager would march
through all of the contexts in cleanupOnError() and call each of
their cleanupOnError() methods. That did not work with server side
JDBC, especially for a StatementException, because outer contexts
could get cleaned up incorrectly. This functionality is specific
to the Language system. Any non-language system contexts should
return ExceptionSeverity.NOT_APPLICABLE_SEVERITY.
NOTE: Both the LanguageConnectionContext and the JDBC Connection Context are
interested in session level errors because they both have clean up to do.
This method allows both of them to return false so that all such handlers
under them can do their clean up.
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