source: trunk/CrossPare/src/de/ugoe/cs/cpdp/loader/AbstractFolderLoader.java @ 3

package de.ugoe.cs.cpdp.loader;

import java.io.File;
import java.util.LinkedList;
import java.util.List;

import weka.core.Instances;

import de.ugoe.cs.cpdp.versions.SoftwareVersion;


public abstract class AbstractFolderLoader implements IVersionLoader {
        
        // TODO
        interface SingleVersionLoader {
                Instances load(File file);
                boolean filenameFilter(String filename);
        }

        /**
         * Path of the data.
         */
        private String path = "";
        
        /**
         * @see de.ugoe.cs.cpdp.loader.IVersionLoader#setLocation(java.lang.String)
         */
        @Override
        public void setLocation(String location) {
                path=location;
        }
        
        /**
         * @see de.ugoe.cs.cpdp.loader.IVersionLoader#load()
         */
        @Override
        public List<SoftwareVersion> load() {
                final List<SoftwareVersion> versions = new LinkedList<SoftwareVersion>();
                
                final File dataDir = new File(path);
                final SingleVersionLoader instancesLoader = getSingleLoader();
                
                for( File projectDir : dataDir.listFiles() ) {
                        if( projectDir.isDirectory() ) {
                                String projectName = projectDir.getName();
                                for( File versionFile : projectDir.listFiles() ) {
                                        if( versionFile.isFile() && instancesLoader.filenameFilter(versionFile.getName()) ) {
                                                String versionName = versionFile.getName();
                                                Instances data = instancesLoader.load(versionFile);
                                                versions.add(new SoftwareVersion(projectName, versionName, data));
                                        }
                                }
                        }
                }
                return versions;
        }
        
        abstract protected SingleVersionLoader getSingleLoader();
}