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* as indicated by the @author tags. See the copyright.txt file in the
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*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.as.clustering.controller.transform;
import org.jboss.as.controller.PathAddress;
import org.jboss.as.controller.transform.TransformationContext;
import org.jboss.as.controller.transform.description.DiscardPolicy;
import org.jboss.as.controller.transform.description.DynamicDiscardPolicy;
import org.jboss.dmr.ModelNode;
import org.jboss.dmr.Property;
/**
* Implementation of a generic {@link DynamicDiscardPolicy} that discards child resources which have all their
* attributes undefined, conditionally rejects or leaves resource for further transformation. It is to be used for required child
* resources that are auto-created.
*
* @author Radoslav Husar
* @version Sep 2015
*/
public enum RequiredChildResourceDiscardPolicy implements DynamicDiscardPolicy {
/**
* Policy that discards if all attributes are undefined; rejects otherwise.
*/
REJECT_AND_WARN(DiscardPolicy.REJECT_AND_WARN),
/**
* Policy that discards if all attributes are undefined; never discards otherwise ({@link DiscardPolicy#NEVER}) in order to proceed with
* resource transformations.
*/
NEVER(DiscardPolicy.NEVER);
private final DiscardPolicy policy;
RequiredChildResourceDiscardPolicy(DiscardPolicy policy) {
this.policy = policy;
}
/**
* @return {@link DiscardPolicy#REJECT_AND_WARN} if any of the attributes are defined; {@link DiscardPolicy#SILENT} otherwise
*/
@Override
public DiscardPolicy checkResource(TransformationContext context, PathAddress address) {
ModelNode model = context.readResource(PathAddress.EMPTY_ADDRESS).getModel();
if (model.isDefined()) {
for (Property entry : model.asPropertyList()) {
if (entry.getValue().isDefined()) {
return policy;
}
}
}
return DiscardPolicy.SILENT;
}
}