/*
* JBoss, Home of Professional Open Source.
* Copyright 2012, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* 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.wildfly.extension.mod_cluster;
import org.jboss.as.controller.ParameterCorrector;
import org.jboss.dmr.ModelNode;
import org.jboss.dmr.ModelType;
/**
* {@link ParameterCorrector} that converts 0 to -1. Used for attributes that have historically allowed -1 as
* a "disabled" value but otherwise require a positive value. This parameter corrector allows an IntRangeValidator
* with a range starting at -1 to be used, while avoiding having 0 as a value. Ideally, "undefined" would mean disabled,
* and an IntRangeValidator starting at 1 would be used, but these -1 attributes have been out in the wild for quite
* a while now so they need to be supported.
*
* @author Brian Stansberry (c) 2011 Red Hat Inc.
*/
class ZeroToNegativeOneParameterCorrector implements ParameterCorrector {
static final ZeroToNegativeOneParameterCorrector INSTANCE = new ZeroToNegativeOneParameterCorrector();
@Override
public ModelNode correct(ModelNode newValue, ModelNode currentValue) {
if (newValue.isDefined() && newValue.getType() != ModelType.EXPRESSION) {
try {
long val = newValue.asLong();
if (val == 0) {
return new ModelNode(-1);
}
} catch (Exception e) {
// not convertible; let the validator that the caller will invoke later deal with this
}
}
return newValue;
}
}