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Introduce new class ExternalProjects
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src/main/java/org/mastodon/mamut/classification/multiproject/ExternalProjects.java
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|---|---|---|
| @@ -0,0 +1,167 @@ | ||
| package org.mastodon.mamut.classification.multiproject; | ||
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| import mpicbg.spim.data.SpimDataException; | ||
| import org.mastodon.mamut.ProjectModel; | ||
| import org.mastodon.mamut.util.MastodonProjectService; | ||
| import org.mastodon.mamut.util.ProjectSession; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| import java.io.File; | ||
| import java.io.IOException; | ||
| import java.lang.invoke.MethodHandles; | ||
| import java.util.Arrays; | ||
| import java.util.Collection; | ||
| import java.util.Collections; | ||
| import java.util.HashMap; | ||
| import java.util.Iterator; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.stream.Collectors; | ||
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| /** | ||
| * A collection of external projects. | ||
| * <br> | ||
| * This class manages a collection of external projects. It holds a mapping of project files to project sessions and a mapping of projects that failed to be loaded and the reason why they failed to load. | ||
| */ | ||
| public class ExternalProjects implements AutoCloseable | ||
| { | ||
| private static final Logger logger = LoggerFactory.getLogger( MethodHandles.lookup().lookupClass() ); | ||
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| private final MastodonProjectService projectService; | ||
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| private final Map< File, ProjectSession > projectSessions; | ||
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| private final Map< File, String > failingProjects; | ||
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| public ExternalProjects( final MastodonProjectService projectService ) | ||
| { | ||
| this.projectService = projectService; | ||
| this.projectSessions = new HashMap<>(); | ||
| this.failingProjects = new HashMap<>(); | ||
| } | ||
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| /** | ||
| * Gets all project models of the external projects | ||
| * @return the project models | ||
| */ | ||
| public Collection< ProjectModel > getProjectModels() | ||
| { | ||
| return projectSessions.values().stream().map( ProjectSession::getProjectModel ).collect( Collectors.toList() ); | ||
| } | ||
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| /** | ||
| * Gets a mapping of external project files to their project sessions | ||
| * @return the mapping | ||
| */ | ||
| public Map< File, ProjectSession > getProjects() | ||
| { | ||
| return projectSessions; | ||
| } | ||
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| /** | ||
| * Get the number of external projects | ||
| * @return the number of external projects | ||
| */ | ||
| public int size() | ||
| { | ||
| return projectSessions.size(); | ||
| } | ||
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| /** | ||
| * Check if the external projects is empty | ||
| * @return {@code true} if the external projects is empty, {@code false} otherwise | ||
| */ | ||
| public boolean isEmpty() | ||
| { | ||
| return projectSessions.isEmpty(); | ||
| } | ||
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| /** | ||
| * Get a Collection failing projects and the reason why they failed to load. | ||
| * @return the failing projects | ||
| */ | ||
| public Collection< String > getFailingProjectMessages() | ||
| { | ||
| return failingProjects.values(); | ||
| } | ||
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| /** | ||
| * Set the external projects | ||
| * @param projects the external projects | ||
| */ | ||
| public void setProjects( final File[] projects ) | ||
| { | ||
| List< File > projectsList = projects == null ? Collections.emptyList() : Arrays.asList( projects ); | ||
| removeProjects( projectsList ); | ||
| cleanUpFailingProjects( projectsList ); | ||
| addProjects( projects ); | ||
| logger.debug( "Set {} projects. Active project sessions: {}.", projectsList.size(), projectService.activeSessions() ); | ||
| } | ||
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| /** | ||
| * Remove files from the externalProjects map that are not in the projects list | ||
| */ | ||
| private void removeProjects( final List< File > projectsList ) | ||
| { | ||
| Iterator< Map.Entry< File, ProjectSession > > iterator = projectSessions.entrySet().iterator(); | ||
| while ( iterator.hasNext() ) | ||
| { | ||
| Map.Entry< File, ProjectSession > entry = iterator.next(); | ||
| File file = entry.getKey(); | ||
| if ( !projectsList.contains( file ) ) | ||
| { | ||
| ProjectSession projectSession = entry.getValue(); | ||
| projectSession.close(); | ||
| iterator.remove(); | ||
| } | ||
| } | ||
| } | ||
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| /** | ||
| * Remove files from the failingExternalProjects map that are not in the projects list | ||
| */ | ||
| private void cleanUpFailingProjects( final List< File > projectsList ) | ||
| { | ||
| for ( Map.Entry< File, String > entry : failingProjects.entrySet() ) | ||
| { | ||
| File file = entry.getKey(); | ||
| if ( !projectsList.contains( file ) ) | ||
| failingProjects.remove( file ); | ||
| } | ||
| } | ||
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| /** | ||
| * Add files from projects to the map if they are not already present | ||
| */ | ||
| private void addProjects( final File[] files ) | ||
| { | ||
| if ( files == null ) | ||
| return; | ||
| for ( File file : files ) | ||
| { | ||
| if ( !projectSessions.containsKey( file ) ) | ||
| { | ||
| try | ||
| { | ||
| projectSessions.put( file, projectService.createSession( file ) ); | ||
| failingProjects.remove( file ); | ||
| } | ||
| catch ( SpimDataException | IOException | RuntimeException e ) | ||
| { | ||
| failingProjects.put( file, | ||
| "Could not read project from file " + file.getAbsolutePath() + ".<br>Error: " + e.getMessage() ); | ||
| logger.warn( "Could not read project from file {}. Error: {}", file.getAbsolutePath(), e.getMessage() ); | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| @Override | ||
| public void close() | ||
| { | ||
| for ( ProjectSession projectSession : projectSessions.values() ) | ||
| projectSession.close(); | ||
| logger.debug( "Remaining active project sessions: {}.", projectService.activeSessions() ); | ||
| } | ||
| } |
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