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OREKIT (ORbits Extrapolation KIT) is a low level space dynamics library. It provides basic elements (orbits, dates, attitude, frames ...) and various algorithms to handle them (conversions, analytical and numerical propagation, pointing ...).

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/* Contributed in the public domain.
 * Licensed to CS GROUP (CS) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * CS licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.orekit.data;

import org.orekit.bodies.CelestialBodies;
import org.orekit.forces.gravity.potential.GravityFields;
import org.orekit.frames.Frames;
import org.orekit.models.earth.GeoMagneticFields;
import org.orekit.time.TimeScales;

/**
 * A simple implementation of {@link DataContext} that composes the constituent factories
 * into a data context.
 *
 * @author Evan Ward
 * @since 10.1
 */
public class CompositeDataContext implements DataContext {

    /** Time scales in this data context. */
    private final TimeScales timeScales;
    /** Frames in this data context. */
    private final Frames frames;
    /** Celestial bodies in this data context. */
    private final CelestialBodies celestialBodies;
    /** Gravity fields in this data context. */
    private final GravityFields gravityFields;
    /** Magnetic fields in this data context. */
    private final GeoMagneticFields geoMagneticFields;

    /**
     * Simple constructor.
     *
     * @param timeScales        used in this data context.
     * @param frames            used in this data context.
     * @param celestialBodies   used in this data context.
     * @param gravityFields     used in this data context.
     * @param geoMagneticFields used in this data context.
     */
    public CompositeDataContext(final TimeScales timeScales,
                                final Frames frames,
                                final CelestialBodies celestialBodies,
                                final GravityFields gravityFields,
                                final GeoMagneticFields geoMagneticFields) {
        this.timeScales = timeScales;
        this.frames = frames;
        this.celestialBodies = celestialBodies;
        this.gravityFields = gravityFields;
        this.geoMagneticFields = geoMagneticFields;
    }

    @Override
    public TimeScales getTimeScales() {
        return timeScales;
    }

    @Override
    public Frames getFrames() {
        return frames;
    }

    @Override
    public CelestialBodies getCelestialBodies() {
        return celestialBodies;
    }

    @Override
    public GravityFields getGravityFields() {
        return gravityFields;
    }

    @Override
    public GeoMagneticFields getGeoMagneticFields() {
        return geoMagneticFields;
    }

}