/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2015, 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.controller.capability.registry;

import static org.jboss.as.controller.descriptions.ModelDescriptionConstants.HOST;

/**
 * {@link CapabilityScope} for capabilities whose use is restricted to
 * the Host Controller in which they are installed; e.g. they cannot be
 * resolved by requirers in a domain level context.
 *
 * @author Brian Stansberry
 */
class HostCapabilityScope implements CapabilityScope {

    static final HostCapabilityScope INSTANCE = new HostCapabilityScope();

    @Override
    public boolean canSatisfyRequirement(String requiredName, CapabilityScope dependentScope, CapabilityResolutionContext context) {
        return dependentScope == CapabilityScope.GLOBAL || dependentScope instanceof HostCapabilityScope;
    }

    @Override
    public boolean requiresConsistencyCheck() {
        return false;
    }

    @Override
    public String getName() {
        return HOST;
    }

    @Override
    public String toString() {
        return getName();
    }

    @Override
    public int hashCode() {
        return getName().hashCode();
    }

    @Override
    public boolean equals(Object o) {
        return this == o || !(o == null || getClass() != o.getClass());
    }
}