org.jboss.as.cli.handlers.ifelse.ComparisonOperation Maven / Gradle / Ivy
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* 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.jboss.as.cli.handlers.ifelse;
import java.util.List;
import org.jboss.as.cli.CommandContext;
import org.jboss.as.cli.CommandLineException;
import org.jboss.dmr.ModelNode;
/**
*
* @author Alexey Loubyansky
*/
abstract class ComparisonOperation extends BaseOperation {
ComparisonOperation(String name) {
super(name, 8);
}
@Override
public Object resolveValue(CommandContext ctx, ModelNode response) throws CommandLineException {
final List operands = getOperands();
if(operands.isEmpty()) {
throw new CommandLineException(getName() + " has no operands.");
}
if(operands.size() != 2) {
throw new CommandLineException(getName() + " expects 2 operands but got " + operands.size());
}
final Object left = operands.get(0).resolveValue(ctx, response);
if(left == null) {
return false;
}
final Object right = operands.get(1).resolveValue(ctx, response);
if(right == null) {
return false;
}
if(!(left instanceof ModelNode) || !(right instanceof ModelNode)) {
throw new CommandLineException("Operands aren't instances of org.jboss.dmr.ModelNode: " +
left.getClass().getName() + ", " + right.getClass().getName());
}
if(((ModelNode) left).getType() != ((ModelNode)right).getType()) {
return false;
}
return compare(left, right);
}
protected abstract boolean compare(Object left, Object right) throws CommandLineException;
}