/*
 * Copyright (c) 2019 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0, which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 *
 * This Source Code may also be made available under the following Secondary
 * Licenses when the conditions for such availability set forth in the
 * Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
 * version 2 with the GNU Classpath Exception, which is available at
 * https://www.gnu.org/software/classpath/license.html.
 *
 * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
 */

package org.glassfish.jersey.internal.config;

import org.glassfish.jersey.spi.ExternalConfigurationModel;
import org.glassfish.jersey.spi.ExternalConfigurationProvider;

import java.util.Map;

class SystemPropertiesConfigurationProvider implements ExternalConfigurationProvider {

    private final SystemPropertiesConfigurationModel model = new SystemPropertiesConfigurationModel();
    @Override
    public Map<String, Object> getProperties() {
        return model.getProperties();
    }

    @Override
    public ExternalConfigurationModel getConfiguration() {
        return model;
    }

    @Override
    public ExternalConfigurationModel merge(ExternalConfigurationModel input) {
        return input == null ? model : model.mergeProperties(input.getProperties());
    }

}