added serialization

src/java/lodge/reservationsystem/DataRepository.java

@@ -0,0 +1,59 @@
+package lodge.reservationsystem;
+
+import java.io.IOException;
+import java.nio.file.FileVisitResult;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.SimpleFileVisitor;
+import java.nio.file.attribute.BasicFileAttributes;
+
+final class DataRepository {
+    // SINGLETON CLASS
+    // hard code data store location for storage of
+    // account data files on filesystem
+    private String directoryPath;
+    private static final DataRepository instance = new DataRepository();
+
+    protected static DataRepository getInstance() {
+        return instance;
+    }
+
+    public final static void setDataStoreRoot(final String direcoryPath) {
+        getInstance().directoryPath = direcoryPath;
+    }
+
+    public final static String getPath() {
+        return getInstance().directoryPath;
+    }
+
+    public static void WalkFileSystemTree(final AccomodationManager manager, Path rootDir) throws IOException{
+        Files.walkFileTree(rootDir, new SimpleFileVisitor<Path>() {
+            @Override
+            public FileVisitResult visitFile(Path file, BasicFileAttributes attrs) {
+                System.out.println("File: " + file.toAbsolutePath());
+                // load account number, and content
+                if (attrs.isRegularFile()) {
+                    String namestring = file.getName(file.getNameCount() - 1).toString();
+                    if (namestring.endsWith("json")) {
+                        if (namestring.startsWith("acc")) { // * load Account *//
+                            try {
+                                manager.load(file);
+                            } catch (Exception e) {
+                                e.printStackTrace();
+                            }
+                        }
+                    }
+                }
+                // load reservation
+                return FileVisitResult.CONTINUE;
+            }
+
+            @Override
+            public FileVisitResult preVisitDirectory(Path dir, BasicFileAttributes attrs) {
+                System.out.println("Directory: " + dir.toAbsolutePath());
+                // prepare to load account number
+                return FileVisitResult.CONTINUE;
+            }
+        });
+    }  
+}