/*
 * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.controller.md.cluster.datastore.model;

import java.io.InputStream;
import org.opendaylight.yangtools.yang.model.api.EffectiveModelContext;
import org.opendaylight.yangtools.yang.test.util.YangParserTestUtils;

public final class SchemaContextHelper {

    public static final String ODL_DATASTORE_TEST_YANG = "/odl-datastore-test.yang";
    public static final String PEOPLE_YANG = "/people.yang";
    public static final String CARS_YANG = "/cars.yang";

    private static volatile EffectiveModelContext FULL;

    private SchemaContextHelper() {

    }

    public static InputStream getInputStream(final String yangFileName) {
        return SchemaContextHelper.class.getResourceAsStream(yangFileName);
    }

    public static EffectiveModelContext full() {
        EffectiveModelContext ret = FULL;
        if (ret == null) {
            synchronized (SchemaContextHelper.class) {
                ret = FULL;
                if (ret == null) {
                    ret = FULL = select(ODL_DATASTORE_TEST_YANG, PEOPLE_YANG, CARS_YANG);
                }
            }
        }

        return ret;
    }

    public static EffectiveModelContext select(final String... schemaFiles) {
        return YangParserTestUtils.parseYangResources(SchemaContextHelper.class, schemaFiles);
    }
}