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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed 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 android.car.vms;
import android.car.annotation.FutureFeature;
import android.os.Parcel;
import android.os.Parcelable;
import java.util.Objects;
/**
* A VMS Layer which can be subscribed to by VMS clients.
* Consists of the layer ID and the layer major version.
*
* This class does not contain the minor version since all minor version are backward and forward
* compatible and should not be used for routing messages.
* @hide
*/
@FutureFeature
public final class VmsLayer implements Parcelable {
// The layer ID.
private int mId;
// The layer version.
private int mVersion;
public VmsLayer(int id, int version) {
mId = id;
mVersion = version;
}
public int getId() {
return mId;
}
public int getVersion() {
return mVersion;
}
/**
* Checks the two objects for equality by comparing their IDs and Versions.
*
* @param o the {@link VmsLayer} to which this one is to be checked for equality
* @return true if the underlying objects of the VmsLayer are both considered equal
*/
@Override
public boolean equals(Object o) {
if (!(o instanceof VmsLayer)) {
return false;
}
VmsLayer p = (VmsLayer) o;
return Objects.equals(p.mId, mId) && Objects.equals(p.mVersion, mVersion);
}
/**
* Compute a hash code similarly tp {@link android.util.Pair}
*
* @return a hashcode of the Pair
*/
@Override
public int hashCode() {
return Objects.hash(mId, mVersion);
}
@Override
public String toString() {
return "VmsLayer{" + mId + " " + mVersion + "}";
}
// Parcelable related methods.
public static final Parcelable.Creator<VmsLayer> CREATOR = new
Parcelable.Creator<VmsLayer>() {
public VmsLayer createFromParcel(Parcel in) {
return new VmsLayer(in);
}
public VmsLayer[] newArray(int size) {
return new VmsLayer[size];
}
};
@Override
public void writeToParcel(Parcel out, int flags) {
out.writeInt(mId);
out.writeInt(mVersion);
}
@Override
public int describeContents() {
return 0;
}
private VmsLayer(Parcel in) {
readFromParcel(in);
}
private void readFromParcel(Parcel in) {
mId = in.readInt();
mVersion = in.readInt();
}
}
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