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Comments (3)

tinevez avatar tinevez commented on August 26, 2024

Example in two classes:

Class that saves a model with an added feature:

package org.mastodon.revised.mamut;

import java.io.File;
import java.io.IOException;
import java.lang.reflect.InvocationTargetException;

import org.mastodon.features.DoubleFeature;
import org.mastodon.revised.model.mamut.Model;
import org.mastodon.revised.model.mamut.Spot;

import mpicbg.spim.data.SpimDataException;

public class TestSaveFeature
{

    public static final String KEY = "TEST_FEATURE";

    public static final File TEST_FILE = new File( "samples/test_features.raw" );

    public static void main( final String[] args ) throws IOException, SpimDataException, InvocationTargetException, InterruptedException
    {
        final String bdvFile = "samples/datasethdf5.xml";
        final String modelFile = "samples/model_revised.raw";
        final MamutProject project = new MamutProject( new File( "." ), new File( bdvFile ), new File( modelFile ) );
        /*
         * Load Model
         */
        final Model model = new Model();
        if ( project.getRawModelFile() != null )
            model.loadRaw( project.getRawModelFile() );

        System.out.println( String.format( "Loaded a graph with %d vertices and %d edges.",
                model.getGraph().vertices().size(), model.getGraph().edges().size() ) );

        final DoubleFeature< Spot > test = new DoubleFeature<>( KEY, 10. );
        for ( final Spot s : model.getGraph().vertices() )
            s.feature( test ).set( 3.14 );

        model.saveRaw( TEST_FILE );
        System.out.println( "Saved to " + TEST_FILE );
    }

}

Class that reloads this model:

package org.mastodon.revised.mamut;

import java.io.IOException;
import java.lang.reflect.InvocationTargetException;

import org.mastodon.features.Feature;
import org.mastodon.features.FeatureRegistry;
import org.mastodon.revised.model.mamut.Model;
import org.mastodon.revised.model.mamut.Spot;

import mpicbg.spim.data.SpimDataException;

public class TestLoadFeatures
{
    public static void main( final String[] args ) throws IOException, SpimDataException, InvocationTargetException, InterruptedException
    {
        /*
         * Load Model
         */
        final Model model = new Model();
        model.loadRaw( TestSaveFeature.TEST_FILE );

        System.out.println( String.format( "Loaded a graph with %d vertices and %d edges.",
                model.getGraph().vertices().size(), model.getGraph().edges().size() ) );

        final Feature feature = FeatureRegistry.getFeature( TestSaveFeature.KEY );
        System.out.println( "Feature with key " + TestSaveFeature.KEY + " is " + feature );

        for ( final Spot s : model.getGraph().vertices() )
            System.out.println( s + " feature " + s.feature( feature ).get() );

    }

}

Results of the latest:

UndoRecorder.graphRebuilt()
TODO!!!!
Loaded a graph with 3087 vertices and 2981 edges.
Feature with key TEST_FEATURE is null
Exception in thread "main" java.lang.NullPointerException
    at org.mastodon.graph.ref.AbstractVertexWithFeatures.feature(AbstractVertexWithFeatures.java:50)
    at org.mastodon.revised.mamut.TestLoadFeatures.main(TestLoadFeatures.java:32)

from mastodon.

tinevez avatar tinevez commented on August 26, 2024

A solution would be maybe to change the way features are handled via static methods, and have a Model carry with it declarations of the features it has and their type.

These declarations could be saved and deserialized before the actual features are deserialized.

The application could modify these declarations at runtime, adding or removing features at will.

from mastodon.

tinevez avatar tinevez commented on August 26, 2024

This is fixed by #36 (among others).

from mastodon.

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