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Set up engine benchmark app with Jetpack Compose (#2817)
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+1444
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lines changed

‎build.gradle.kts‎

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@@ -13,6 +13,8 @@ buildscript {
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classpath(Plugins.kotlinGradlePlugin)
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classpath(Plugins.navSafeArgsGradlePlugin)
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classpath(Plugins.rulerGradlePlugin)
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classpath(Plugins.kotlinComposePlugin)
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classpath(Plugins.kotlinSerializationPlugin)
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}
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}
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‎buildSrc/src/main/kotlin/Plugins.kt‎

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@@ -23,7 +23,9 @@ object Plugins {
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const val dokka = "org.jetbrains.dokka"
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const val kotlin = "kotlin"
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const val kotlinAndroid = "kotlin-android"
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const val kotlinCompose = "org.jetbrains.kotlin.plugin.compose"
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const val kotlinKsp = "com.google.devtools.ksp"
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const val kotlinSerialization = "org.jetbrains.kotlin.plugin.serialization"
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const val mavenPublish = "maven-publish"
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const val fladle = "com.osacky.fladle"
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const val navSafeArgs = "androidx.navigation.safeargs.kotlin"
@@ -36,6 +38,10 @@ object Plugins {
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const val benchmarkGradlePlugin =
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"androidx.benchmark:benchmark-gradle-plugin:${Versions.benchmarkPlugin}"
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const val kotlinGradlePlugin = "org.jetbrains.kotlin:kotlin-gradle-plugin:${Versions.kotlin}"
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const val kotlinComposePlugin =
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"org.jetbrains.kotlin.plugin.compose:org.jetbrains.kotlin.plugin.compose.gradle.plugin:${Versions.kotlin}"
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const val kotlinSerializationPlugin =
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"org.jetbrains.kotlin.plugin.serialization:org.jetbrains.kotlin.plugin.serialization.gradle.plugin:${Versions.kotlin}"
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const val navSafeArgsGradlePlugin = "androidx.navigation:navigation-safe-args-gradle-plugin:2.6.0"
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const val rulerGradlePlugin = "com.spotify.ruler:ruler-gradle-plugin:1.2.1"
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const val flankGradlePlugin = "com.osacky.flank.gradle:fladle:0.17.4"

‎demo/build.gradle.kts‎

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@@ -50,7 +50,7 @@ dependencies {
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implementation(libs.androidx.datastore.preferences)
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implementation(libs.androidx.fragment)
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implementation(libs.androidx.lifecycle.livedata)
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implementation(libs.androidx.lifecycle.runtime)
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implementation(libs.androidx.lifecycle.runtime.ktx)
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implementation(libs.androidx.lifecycle.viewmodel)
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implementation(libs.androidx.navigation.fragment)
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implementation(libs.androidx.navigation.ui)

‎engine/benchmarks/app/.gitignore‎

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/build
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/src/main/assets/bulk_data/*
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!*.keep

‎engine/benchmarks/app/build.gradle.kts‎

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plugins {
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id(Plugins.BuildPlugins.application)
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id(Plugins.BuildPlugins.kotlinAndroid)
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id(Plugins.BuildPlugins.kotlinCompose)
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id(Plugins.BuildPlugins.kotlinSerialization)
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}
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android {
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namespace = "com.google.android.fhir.engine.benchmarks.app"
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compileSdk = Sdk.COMPILE_SDK
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defaultConfig {
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applicationId = "com.google.android.fhir.engine.benchmarks.app"
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minSdk = Sdk.MIN_SDK
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targetSdk = Sdk.TARGET_SDK
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versionCode = 1
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versionName = "1.0"
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testInstrumentationRunner = Dependencies.androidJunitRunner
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}
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buildTypes {
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release {
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isMinifyEnabled = false
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proguardFiles(
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getDefaultProguardFile("proguard-android-optimize.txt"),
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"proguard-rules.pro",
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)
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}
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create("benchmark") {
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initWith(buildTypes.getByName("release"))
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signingConfig = signingConfigs.getByName("debug")
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matchingFallbacks += listOf("release")
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isDebuggable = false
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}
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}
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compileOptions {
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isCoreLibraryDesugaringEnabled = true
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sourceCompatibility = JavaVersion.VERSION_11
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targetCompatibility = JavaVersion.VERSION_11
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}
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kotlinOptions { jvmTarget = "11" }
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buildFeatures { compose = true }
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packaging { resources.excludes.addAll(listOf("META-INF/ASL-2.0.txt", "META-INF/LGPL-3.0.txt")) }
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kotlin { jvmToolchain(11) }
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}
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dependencies {
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coreLibraryDesugaring(Dependencies.desugarJdkLibs)
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implementation(project(":engine"))
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implementation(libs.androidx.core)
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implementation(libs.androidx.lifecycle.viewmodel.savedstate)
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implementation(libs.androidx.activity.compose)
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implementation(platform(libs.androidx.compose.bom))
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implementation(libs.androidx.compose.ui)
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implementation(libs.androidx.compose.ui.graphics)
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implementation(libs.androidx.compose.ui.tooling.preview)
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implementation(libs.androidx.compose.material3)
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implementation(libs.androidx.navigation.compose)
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implementation(libs.bundles.androidx.tracing)
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implementation(libs.kotlinx.serialization.json)
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testImplementation(libs.junit)
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androidTestImplementation(libs.androidx.test.ext.junit)
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androidTestImplementation(libs.androidx.test.espresso.core)
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androidTestImplementation(platform(libs.androidx.compose.bom))
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androidTestImplementation(libs.androidx.compose.ui.test.junit4)
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debugImplementation(libs.androidx.compose.ui.tooling)
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debugImplementation(libs.androidx.compose.ui.test.manifest)
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}

‎engine/benchmarks/app/src/main/AndroidManifest.xml‎

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<?xml version="1.0" encoding="utf-8" ?>
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<manifest
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xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:tools="http://schemas.android.com/tools"
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>
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<uses-permission android:name="android.permission.INTERNET" />
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<application
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android:name=".MainApplication"
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android:allowBackup="true"
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android:icon="@mipmap/ic_launcher"
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android:label="@string/app_name"
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android:networkSecurityConfig="@xml/network_security_config"
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android:roundIcon="@mipmap/ic_launcher_round"
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android:supportsRtl="true"
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android:theme="@style/Theme.Androidfhir"
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>
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<profileable android:shell="true" tools:targetApi="29" />
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<activity
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android:name=".MainActivity"
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android:exported="true"
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android:theme="@style/Theme.Androidfhir"
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>
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<intent-filter>
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<action android:name="android.intent.action.MAIN" />
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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</application>
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</manifest>

‎engine/benchmarks/app/src/main/assets/bulk_data/.keep‎

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‎engine/benchmarks/app/src/main/java/com/google/android/fhir/engine/benchmarks/app/CrudApiViewModel.kt‎

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/*
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* Copyright 2025 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
11+
* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.android.fhir.engine.benchmarks.app
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import androidx.lifecycle.ViewModel
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import androidx.lifecycle.viewModelScope
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import com.google.android.fhir.FhirEngine
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import com.google.android.fhir.engine.benchmarks.app.data.ResourcesDataProvider
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import java.time.LocalDateTime
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import kotlinx.coroutines.flow.MutableStateFlow
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import kotlinx.coroutines.flow.StateFlow
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import kotlinx.coroutines.flow.asStateFlow
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import kotlinx.coroutines.launch
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@Suppress("unused")
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class CrudApiViewModel(
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private val resourcesDataProvider: ResourcesDataProvider,
32+
private val fhirEngine: FhirEngine,
33+
) : ViewModel() {
34+
private val _detailMutableStateFlow = MutableStateFlow("")
35+
val detailStateFlow: StateFlow<String> = _detailMutableStateFlow.asStateFlow()
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init {
38+
viewModelScope.launch(benchmarkingViewModelWorkDispatcher) {
39+
_detailMutableStateFlow.value = "CRUD: ${LocalDateTime.now()}"
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}
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}
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}

‎engine/benchmarks/app/src/main/java/com/google/android/fhir/engine/benchmarks/app/MainActivity.kt‎

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/*
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* Copyright 2025 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
8+
* http://www.apache.org/licenses/LICENSE-2.0
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*
10+
* Unless required by applicable law or agreed to in writing, software
11+
* distributed under the License is distributed on an "AS IS" BASIS,
12+
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13+
* See the License for the specific language governing permissions and
14+
* limitations under the License.
15+
*/
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package com.google.android.fhir.engine.benchmarks.app
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import android.os.Bundle
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import androidx.activity.ComponentActivity
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import androidx.activity.compose.setContent
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import androidx.activity.enableEdgeToEdge
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import androidx.activity.viewModels
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import androidx.compose.runtime.Composable
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import androidx.lifecycle.ViewModel
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import androidx.lifecycle.ViewModelProvider
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import androidx.lifecycle.viewmodel.compose.viewModel
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import androidx.navigation.compose.NavHost
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import androidx.navigation.compose.composable
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import androidx.navigation.compose.rememberNavController
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import ca.uhn.fhir.context.FhirContext
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import com.google.android.fhir.FhirEngine
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import com.google.android.fhir.engine.benchmarks.app.data.ResourcesDataProvider
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import com.google.android.fhir.engine.benchmarks.app.ui.CrudDetail
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import com.google.android.fhir.engine.benchmarks.app.ui.Home
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import com.google.android.fhir.engine.benchmarks.app.ui.Screen
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import com.google.android.fhir.engine.benchmarks.app.ui.SearchApiDetail
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import com.google.android.fhir.engine.benchmarks.app.ui.SyncApiDetail
39+
import com.google.android.fhir.engine.benchmarks.app.ui.theme.AndroidfhirTheme
40+
import kotlin.getValue
41+
42+
class MainActivity : ComponentActivity() {
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@Suppress("unused") private val viewModel: MainViewModel by viewModels()
45+
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private val resourcesDataProvider by lazy {
47+
val assetManager = this@MainActivity.assets
48+
val fhirR4JsonParser = FhirContext.forR4Cached().newJsonParser()
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ResourcesDataProvider(assetManager, fhirR4JsonParser)
50+
}
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private val fhirEngine by lazy { MainApplication.fhirEngine(this@MainActivity) }
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override fun onCreate(savedInstanceState: Bundle?) {
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super.onCreate(savedInstanceState)
56+
enableEdgeToEdge()
57+
setContent { AndroidfhirTheme { AndroidfhirApp(resourcesDataProvider, fhirEngine) } }
58+
}
59+
}
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@Composable
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fun AndroidfhirApp(resourcesDataProvider: ResourcesDataProvider, fhirEngine: FhirEngine) {
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val navController = rememberNavController()
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NavHost(navController, startDestination = Screen.HomeScreen) {
65+
composable<Screen.HomeScreen> {
66+
Home(
67+
{ navController.navigate(Screen.CRUDDetailScreen) },
68+
{ navController.navigate(Screen.SearchDetailScreen) },
69+
{
70+
navController.navigate(
71+
Screen.SyncDetailScreen,
72+
)
73+
},
74+
)
75+
}
76+
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composable<Screen.CRUDDetailScreen> {
78+
val viewModel: CrudApiViewModel =
79+
viewModel(
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it,
81+
factory =
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object : ViewModelProvider.Factory {
83+
override fun <T : ViewModel> create(modelClass: Class<T>): T {
84+
@Suppress("UNCHECKED_CAST")
85+
return CrudApiViewModel(resourcesDataProvider, fhirEngine) as T
86+
}
87+
},
88+
)
89+
CrudDetail(viewModel) { navController.popBackStack() }
90+
}
91+
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composable<Screen.SearchDetailScreen> {
93+
val viewModel: SearchApiViewModel =
94+
viewModel(
95+
it,
96+
factory =
97+
object : ViewModelProvider.Factory {
98+
override fun <T : ViewModel> create(modelClass: Class<T>): T {
99+
@Suppress("UNCHECKED_CAST")
100+
return SearchApiViewModel(resourcesDataProvider, fhirEngine) as T
101+
}
102+
},
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)
104+
SearchApiDetail(viewModel) { navController.popBackStack() }
105+
}
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composable<Screen.SyncDetailScreen> {
108+
val viewModel: SyncApiViewModel =
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viewModel(
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it,
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factory =
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object : ViewModelProvider.Factory {
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override fun <T : ViewModel> create(modelClass: Class<T>): T {
114+
@Suppress("UNCHECKED_CAST")
115+
return SyncApiViewModel(resourcesDataProvider, fhirEngine) as T
116+
}
117+
},
118+
)
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SyncApiDetail(viewModel) { navController.popBackStack() }
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}
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}
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}

‎engine/benchmarks/app/src/main/java/com/google/android/fhir/engine/benchmarks/app/MainApplication.kt‎

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/*
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* Copyright 2025 Google LLC
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
6+
* You may obtain a copy of the License at
7+
*
8+
* http://www.apache.org/licenses/LICENSE-2.0
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*
10+
* Unless required by applicable law or agreed to in writing, software
11+
* distributed under the License is distributed on an "AS IS" BASIS,
12+
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13+
* See the License for the specific language governing permissions and
14+
* limitations under the License.
15+
*/
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package com.google.android.fhir.engine.benchmarks.app
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import android.app.Application
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import android.content.Context
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import android.util.Log
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import com.google.android.fhir.DatabaseErrorStrategy.RECREATE_AT_OPEN
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import com.google.android.fhir.FhirEngine
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import com.google.android.fhir.FhirEngineConfiguration
25+
import com.google.android.fhir.FhirEngineProvider
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import com.google.android.fhir.NetworkConfiguration
27+
import com.google.android.fhir.ServerConfiguration
28+
import com.google.android.fhir.sync.remote.HttpLogger
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class MainApplication : Application() {
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override fun onCreate() {
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super.onCreate()
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FhirEngineProvider.init(
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FhirEngineConfiguration(
36+
enableEncryptionIfSupported = true,
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RECREATE_AT_OPEN,
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ServerConfiguration(
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"https://hapi.fhir.org/baseR4/",
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httpLogger =
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HttpLogger(
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HttpLogger.Configuration(
43+
HttpLogger.Level.BODY,
44+
),
45+
) {
46+
Log.i(TAG, "App-HttpLog")
47+
Log.i(TAG, it)
48+
},
49+
networkConfiguration = NetworkConfiguration(uploadWithGzip = false),
50+
),
51+
),
52+
)
53+
}
54+
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private fun constructFhirEngine(): FhirEngine {
56+
return FhirEngineProvider.getInstance(this)
57+
}
58+
59+
// Only initiate the FhirEngine when used for the first time, not when the app is created.
60+
private val fhirEngine: FhirEngine by lazy { constructFhirEngine() }
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companion object {
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private val TAG = MainApplication::class.java.simpleName
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fun fhirEngine(context: Context) = (context.applicationContext as MainApplication).fhirEngine
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}
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}

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