Package org.jboss.as.controller

Class AbstractRemoveStepHandler

java.lang.Object

org.jboss.as.controller.AbstractRemoveStepHandler

All Implemented Interfaces:

OperationStepHandler

Direct Known Subclasses:

ModelOnlyRemoveStepHandler, ReloadRequiredRemoveStepHandler, ServiceRemoveStepHandler

public abstract class AbstractRemoveStepHandler
extends Object
implements OperationStepHandler

Base class for handlers that remove resources.

Author:

John Bailey

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractRemoveStepHandler()

Method Summary

Modifier and Type	Method	Description
void	execute(OperationContext context, org.jboss.dmr.ModelNode operation)	Execute this step.
protected void	performRemove(OperationContext context, org.jboss.dmr.ModelNode operation, org.jboss.dmr.ModelNode model)
protected void	performRuntime(OperationContext context, org.jboss.dmr.ModelNode operation, org.jboss.dmr.ModelNode model)
protected void	recordCapabilitiesAndRequirements(OperationContext context, org.jboss.dmr.ModelNode operation, Resource resource)	Record any new capabilities that are no longer available as a result of this operation, as well as any requirements for other capabilities that no longer exist.
protected void	recoverServices(OperationContext context, org.jboss.dmr.ModelNode operation, org.jboss.dmr.ModelNode model)
protected boolean	removeChildRecursively(PathElement child)	Gets whether a child resource should be removed via the addition of a step to invoke the "remove" operation for its address.
protected boolean	requiresRuntime(OperationContext context)

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractRemoveStepHandler

protected AbstractRemoveStepHandler()

Method Detail

execute

public void execute(OperationContext context,
                    org.jboss.dmr.ModelNode operation)
             throws OperationFailedException

Description copied from interface: OperationStepHandler

Execute this step. If the operation fails, context.getFailureDescription() must be called, or an OperationFailedException must be thrown. If the operation succeeded and the operation provides a return value, context.getResult() should be called and the result populated with the outcome. If the handler wishes to take further action once the result of the overall operation execution is known, one of the context.completeStep variants should be called to register a callback. The callback will not be invoked if this method throws an exception.

When this method is invoked the thread context classloader will be set to be the defining class loader of the class that implements this interface.

Specified by:

execute in interface OperationStepHandler

Parameters:

context - the operation context

operation - the operation being executed

Throws:

OperationFailedException - if the operation failed before calling context.completeStep()

performRemove

protected void performRemove(OperationContext context,
                             org.jboss.dmr.ModelNode operation,
                             org.jboss.dmr.ModelNode model)
                      throws OperationFailedException

Throws:

OperationFailedException

recordCapabilitiesAndRequirements

protected void recordCapabilitiesAndRequirements(OperationContext context,
                                                 org.jboss.dmr.ModelNode operation,
                                                 Resource resource)
                                          throws OperationFailedException

Record any new capabilities that are no longer available as a result of this operation, as well as any requirements for other capabilities that no longer exist. This method is invoked during OperationContext.Stage.MODEL.

Any changes made by this method will automatically be discarded if the operation rolls back.

This default implementation deregisters any capabilities passed to the constructor.

Parameters:

context - the context. Will not be null

operation - the operation that is executing Will not be null

resource - the resource that will be removed. Will not reflect any updates made by performRemove(OperationContext, org.jboss.dmr.ModelNode, org.jboss.dmr.ModelNode) as this method is invoked before that method is. Will not be null

Throws:

OperationFailedException

removeChildRecursively

protected boolean removeChildRecursively(PathElement child)

Gets whether a child resource should be removed via the addition of a step to invoke the "remove" operation for its address. If this method returns false then the child resource will simply be discarded along with their parent.

NOTE: If a subclass returns false from this method, it must ensure that it itself will make any necessary changes to the capability registry and the service container associated with the child resource. Generally, returning false would only be appropriate for parent resources whose children only represent configuration details of the parent, and are not independent entities.

This default implementation returns true

Parameters:

child - the path element pointing to the child resource

Returns:

true if separate steps should be added to remove children; false if any children can simply be discarded along with the parent

performRuntime

protected void performRuntime(OperationContext context,
                              org.jboss.dmr.ModelNode operation,
                              org.jboss.dmr.ModelNode model)
                       throws OperationFailedException

Throws:

OperationFailedException

recoverServices

protected void recoverServices(OperationContext context,
                               org.jboss.dmr.ModelNode operation,
                               org.jboss.dmr.ModelNode model)
                        throws OperationFailedException

Throws:

OperationFailedException

requiresRuntime

protected boolean requiresRuntime(OperationContext context)