SchemaToPlatformConverter.java

/*
 * Copyright 2021 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.appsearch.platformstorage.converter;

import android.os.Build;

import androidx.annotation.NonNull;
import androidx.annotation.RequiresApi;
import androidx.annotation.RestrictTo;
import androidx.appsearch.app.AppSearchSchema;
import androidx.core.util.Preconditions;

import java.util.List;

/**
 * Translates a jetpack {@link androidx.appsearch.app.AppSearchSchema} into a platform
 * {@link android.app.appsearch.AppSearchSchema}.
 * @hide
 */
@RestrictTo(RestrictTo.Scope.LIBRARY_GROUP)
@RequiresApi(Build.VERSION_CODES.S)
public final class SchemaToPlatformConverter {
    private SchemaToPlatformConverter() {}

    /**
     * Translates a jetpack {@link androidx.appsearch.app.AppSearchSchema} into a platform
     * {@link android.app.appsearch.AppSearchSchema}.
     */
    @NonNull
    public static android.app.appsearch.AppSearchSchema toPlatformSchema(
            @NonNull AppSearchSchema jetpackSchema) {
        Preconditions.checkNotNull(jetpackSchema);
        android.app.appsearch.AppSearchSchema.Builder platformBuilder =
                new android.app.appsearch.AppSearchSchema.Builder(jetpackSchema.getSchemaType());
        List<AppSearchSchema.PropertyConfig> properties = jetpackSchema.getProperties();
        for (int i = 0; i < properties.size(); i++) {
            android.app.appsearch.AppSearchSchema.PropertyConfig platformProperty =
                    toPlatformProperty(properties.get(i));
            platformBuilder.addProperty(platformProperty);
        }
        return platformBuilder.build();
    }

    /**
     * Translates a platform {@link android.app.appsearch.AppSearchSchema} to a jetpack
     * {@link androidx.appsearch.app.AppSearchSchema}.
     */
    @NonNull
    public static AppSearchSchema toJetpackSchema(
            @NonNull android.app.appsearch.AppSearchSchema platformSchema) {
        Preconditions.checkNotNull(platformSchema);
        AppSearchSchema.Builder jetpackBuilder =
                new AppSearchSchema.Builder(platformSchema.getSchemaType());
        List<android.app.appsearch.AppSearchSchema.PropertyConfig> properties =
                platformSchema.getProperties();
        for (int i = 0; i < properties.size(); i++) {
            AppSearchSchema.PropertyConfig jetpackProperty = toJetpackProperty(properties.get(i));
            jetpackBuilder.addProperty(jetpackProperty);
        }
        return jetpackBuilder.build();
    }

    @NonNull
    private static android.app.appsearch.AppSearchSchema.PropertyConfig toPlatformProperty(
            @NonNull AppSearchSchema.PropertyConfig jetpackProperty) {
        Preconditions.checkNotNull(jetpackProperty);
        if (jetpackProperty instanceof AppSearchSchema.StringPropertyConfig) {
            AppSearchSchema.StringPropertyConfig stringProperty =
                    (AppSearchSchema.StringPropertyConfig) jetpackProperty;
            return new android.app.appsearch.AppSearchSchema.StringPropertyConfig.Builder(
                    stringProperty.getName())
                    .setCardinality(stringProperty.getCardinality())
                    .setIndexingType(stringProperty.getIndexingType())
                    .setTokenizerType(stringProperty.getTokenizerType())
                    .build();
        } else if (jetpackProperty instanceof AppSearchSchema.LongPropertyConfig) {
            return new android.app.appsearch.AppSearchSchema.LongPropertyConfig.Builder(
                    jetpackProperty.getName())
                    .setCardinality(jetpackProperty.getCardinality())
                    .build();
        } else if (jetpackProperty instanceof AppSearchSchema.DoublePropertyConfig) {
            return new android.app.appsearch.AppSearchSchema.DoublePropertyConfig.Builder(
                    jetpackProperty.getName())
                    .setCardinality(jetpackProperty.getCardinality())
                    .build();
        } else if (jetpackProperty instanceof AppSearchSchema.BooleanPropertyConfig) {
            return new android.app.appsearch.AppSearchSchema.BooleanPropertyConfig.Builder(
                    jetpackProperty.getName())
                    .setCardinality(jetpackProperty.getCardinality())
                    .build();
        } else if (jetpackProperty instanceof AppSearchSchema.BytesPropertyConfig) {
            return new android.app.appsearch.AppSearchSchema.BytesPropertyConfig.Builder(
                    jetpackProperty.getName())
                    .setCardinality(jetpackProperty.getCardinality())
                    .build();
        } else if (jetpackProperty instanceof AppSearchSchema.DocumentPropertyConfig) {
            AppSearchSchema.DocumentPropertyConfig documentProperty =
                    (AppSearchSchema.DocumentPropertyConfig) jetpackProperty;
            return new android.app.appsearch.AppSearchSchema.DocumentPropertyConfig.Builder(
                    documentProperty.getName(), documentProperty.getSchemaType())
                    .setCardinality(documentProperty.getCardinality())
                    .setShouldIndexNestedProperties(documentProperty.shouldIndexNestedProperties())
                    .build();
        } else {
            throw new IllegalArgumentException(
                    "Invalid dataType: " + jetpackProperty.getDataType());
        }
    }

    @NonNull
    private static AppSearchSchema.PropertyConfig toJetpackProperty(
            @NonNull android.app.appsearch.AppSearchSchema.PropertyConfig platformProperty) {
        Preconditions.checkNotNull(platformProperty);
        if (platformProperty
                instanceof android.app.appsearch.AppSearchSchema.StringPropertyConfig) {
            android.app.appsearch.AppSearchSchema.StringPropertyConfig stringProperty =
                    (android.app.appsearch.AppSearchSchema.StringPropertyConfig) platformProperty;
            return new AppSearchSchema.StringPropertyConfig.Builder(stringProperty.getName())
                    .setCardinality(stringProperty.getCardinality())
                    .setIndexingType(stringProperty.getIndexingType())
                    .setTokenizerType(stringProperty.getTokenizerType())
                    .build();
        } else if (platformProperty
                instanceof android.app.appsearch.AppSearchSchema.LongPropertyConfig) {
            return new AppSearchSchema.LongPropertyConfig.Builder(platformProperty.getName())
                    .setCardinality(platformProperty.getCardinality())
                    .build();
        } else if (platformProperty
                instanceof android.app.appsearch.AppSearchSchema.DoublePropertyConfig) {
            return new AppSearchSchema.DoublePropertyConfig.Builder(platformProperty.getName())
                    .setCardinality(platformProperty.getCardinality())
                    .build();
        } else if (platformProperty
                instanceof android.app.appsearch.AppSearchSchema.BooleanPropertyConfig) {
            return new AppSearchSchema.BooleanPropertyConfig.Builder(platformProperty.getName())
                    .setCardinality(platformProperty.getCardinality())
                    .build();
        } else if (platformProperty
                instanceof android.app.appsearch.AppSearchSchema.BytesPropertyConfig) {
            return new AppSearchSchema.BytesPropertyConfig.Builder(platformProperty.getName())
                    .setCardinality(platformProperty.getCardinality())
                    .build();
        } else if (platformProperty
                instanceof android.app.appsearch.AppSearchSchema.DocumentPropertyConfig) {
            android.app.appsearch.AppSearchSchema.DocumentPropertyConfig documentProperty =
                    (android.app.appsearch.AppSearchSchema.DocumentPropertyConfig) platformProperty;
            return new AppSearchSchema.DocumentPropertyConfig.Builder(
                    documentProperty.getName(),
                    documentProperty.getSchemaType())
                    .setCardinality(documentProperty.getCardinality())
                    .setShouldIndexNestedProperties(documentProperty.shouldIndexNestedProperties())
                    .build();
        } else {
            throw new IllegalArgumentException(
                    "Invalid property type " + platformProperty.getClass()
                            + ": " + platformProperty);
        }
    }
}