TilesEntity.java
/*
* Copyright 2022 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 androidx.core.location.altitude.impl.db;
import android.util.Log;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.core.location.altitude.impl.proto.InvalidProtocolBufferException;
import androidx.core.location.altitude.impl.proto.S2TileProto;
import androidx.room.ColumnInfo;
import androidx.room.Entity;
import androidx.room.PrimaryKey;
import androidx.room.TypeConverter;
import com.google.auto.value.AutoValue;
import com.google.auto.value.AutoValue.CopyAnnotations;
/** Defines the entity type and its converters within the Tiles table. */
@AutoValue
@Entity(tableName = "Tiles")
public abstract class TilesEntity {
private static final String TAG = "MapParamsEntity";
static TilesEntity create(String token, S2TileProto tile) {
return new AutoValue_TilesEntity(token, tile);
}
/** Encodes a {@link S2TileProto}. */
@NonNull
@TypeConverter
public static byte[] fromTile(@NonNull S2TileProto tile) {
return tile.toByteArray();
}
/** Decodes a {@link S2TileProto}. */
@Nullable
@TypeConverter
public static S2TileProto toTile(@NonNull byte[] byteArray) {
try {
return S2TileProto.parseFrom(byteArray);
} catch (InvalidProtocolBufferException e) {
Log.e(TAG, "Unable to parse tile.");
return null;
}
}
/** Returns an identifier for a tile within an S2 cell ID to unit interval map. */
@CopyAnnotations
@PrimaryKey
@ColumnInfo(name = "token")
@NonNull
public abstract String token();
/** Returns a tile within an S2 cell ID to unit interval map. */
@CopyAnnotations
@ColumnInfo(name = "tile")
@NonNull
public abstract S2TileProto tile();
}