package org.webslinger.commons.vfs;

 import java.util.Collections;

 import java.util.HashSet;

 import java.util.Set;

 import org.apache.commons.vfs.FileObject;

 public final class FileSet {

     public final Set<FileSystemAndNameKey> contentFiles;

     public final Set<FileSystemAndNameKey> existantFiles;

     private static final Set<FileSystemAndNameKey> makeSet(FileObject[] files) {

         Set<FileSystemAndNameKey> set = new HashSet<FileSystemAndNameKey>(files.length);

         for (FileObject file: files) {

             set.add(new FileSystemAndNameKey(file));

         }

         return Collections.unmodifiableSet(set);

     }

     protected FileSet(FileObject[] contentFiles, FileObject[] existantFiles) {

         this.contentFiles = makeSet(contentFiles);

         this.existantFiles = makeSet(existantFiles);

     }

     public boolean equals(Object o) {

         if (!(o instanceof FileSet)) return false;

         FileSet other = (FileSet) o;

         return contentFiles.equals(other.contentFiles) && existantFiles.equals(other.existantFiles);

     }

     public int hashCode() {

         return contentFiles.hashCode() ^ existantFiles.hashCode();

     }

 }