java.lang.RuntimeException: java.io.FileNotFoundException: model.pmml.ser (Android)

[jassilva]

I'm testing the jpmml-android example app and realize that model.pmml file was not serialized. I'd like to know how can I serialize the .pmml file inside Android or even use another method. Is there any way to do that? Is there any step-by-step?

I'm using gradle to compile the librarys inside pom.xml file from the example app:

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
        exclude group: 'com.android.support', module: 'support-annotations'
    })
    compile 'com.android.support:appcompat-v7:24.2.1'
    testCompile 'junit:junit:4.12'
    compile group: 'org.jpmml', name: 'pmml-model', version: '1.3.6'
    compile group: 'org.jpmml', name: 'jpmml-evaluator', version: '1.3.6'
    compile group: 'org.codehaus.plexus', name: 'plexus-io', version: '3.0.0'

}

allprojects {
    repositories {
        jcenter()
        maven { url 'https://mvnrepository.com/artifact/org.jpmml/pmml-model' }
        maven { url 'https://mvnrepository.com/artifact/org.jpmml/jpmml-evaluator' }
        maven { url 'https://mvnrepository.com/artifact/org.codehaus.plexus/plexus-io' }
    }
}

Error:

E/AndroidRuntime: FATAL EXCEPTION: main
                  Process: jpmml.org.androidm, PID: 17753
                  java.lang.RuntimeException: java.io.FileNotFoundException: model.pmml.ser
                      at jpmml.org.androidm.MainActivity$1.onClick(MainActivity.java:37)
                      at android.view.View.performClick(View.java:5246)
                      at android.widget.TextView.performClick(TextView.java:10565)
                      at android.view.View$PerformClick.run(View.java:21200)
                      at android.os.Handler.handleCallback(Handler.java:739)
                      at android.os.Handler.dispatchMessage(Handler.java:95)
                      at android.os.Looper.loop(Looper.java:145)
                      at android.app.ActivityThread.main(ActivityThread.java:6946)
                      at java.lang.reflect.Method.invoke(Native Method)
                      at java.lang.reflect.Method.invoke(Method.java:372)
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404)
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)
                   Caused by: java.io.FileNotFoundException: model.pmml.ser
                      at android.content.res.AssetManager.openAsset(Native Method)
                      at android.content.res.AssetManager.open(AssetManager.java:323)
                      at android.content.res.AssetManager.open(AssetManager.java:297)
                      at jpmml.org.androidm.MainActivity.createEvaluator(MainActivity.java:75)
                      at jpmml.org.androidm.MainActivity.access$000(MainActivity.java:18)
                      at jpmml.org.androidm.MainActivity$1.onClick(MainActivity.java:35)
                      at android.view.View.performClick(View.java:5246) 
                      at android.widget.TextView.performClick(TextView.java:10565) 
                      at android.view.View$PerformClick.run(View.java:21200) 
                      at android.os.Handler.handleCallback(Handler.java:739) 
                      at android.os.Handler.dispatchMessage(Handler.java:95) 
                      at android.os.Looper.loop(Looper.java:145) 
                      at android.app.ActivityThread.main(ActivityThread.java:6946) 
                      at java.lang.reflect.Method.invoke(Native Method) 
                      at java.lang.reflect.Method.invoke(Method.java:372) 
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404) 
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199) 
Application terminated.

[vruusmann]

The model file model.pmml.ser is generated using a special-purpose Apache Maven plugin org.jpmml:pmml-maven.plugin:
https://github.com/jpmml/jpmml-android/blob/master/pmml-android-example/pom.xml#L52-L81

Essentially, it's an org.dmg.pmml.PMML class model object in standard Java serialization data format. So, instead of using the above Apache Maven plugin, you may write it out yourself using java.io.ObjectOutputStream.

[jassilva]

Thank you for your fast reply! I'll write a routine and keep trying solve the problem.