[T6A1][F14-B2] walter tay

src/seedu/addressbook/logic/Logic.java

@@ -5,6 +5,7 @@
 import seedu.addressbook.data.AddressBook;
 import seedu.addressbook.data.person.ReadOnlyPerson;
 import seedu.addressbook.parser.Parser;
+import seedu.addressbook.storage.Storage;
 import seedu.addressbook.storage.StorageFile;
 
 import java.util.Collections;
@@ -17,7 +18,7 @@
 public class Logic {
 
 
-    private StorageFile storage;
+    private Storage storage;
     private AddressBook addressBook;
 
     /** The list of person shown to the user most recently.  */
@@ -28,12 +29,12 @@ public Logic() throws Exception{
         setAddressBook(storage.load());
     }
 
-    Logic(StorageFile storageFile, AddressBook addressBook){
+    Logic(Storage storageFile, AddressBook addressBook){
         setStorage(storageFile);
         setAddressBook(addressBook);
     }
 
-    void setStorage(StorageFile storage){
+    void setStorage(Storage storage){
         this.storage = storage;
     }
 
@@ -45,7 +46,7 @@ void setAddressBook(AddressBook addressBook){
      * Creates the StorageFile object based on the user specified path (if any) or the default storage path.
      * @throws StorageFile.InvalidStorageFilePathException if the target file path is incorrect.
      */
-    private StorageFile initializeStorage() throws StorageFile.InvalidStorageFilePathException {
+    private Storage initializeStorage() throws StorageFile.InvalidStorageFilePathException {
         return new StorageFile();
     }
 

src/seedu/addressbook/storage/Storage.java

@@ -0,0 +1,19 @@
+package seedu.addressbook.storage;
+
+import seedu.addressbook.data.AddressBook;
+import seedu.addressbook.storage.StorageFile.StorageOperationException;
+
+public abstract class Storage {
+
+	/** Default file path used if the user doesn't provide the file name. */
+	static String DEFAULT_STORAGE_FILEPATH = "addressbook.txt";
+
+
+	public abstract void save(AddressBook addressBook) throws StorageOperationException;
+
+
+	public abstract AddressBook load() throws StorageOperationException;
+
+	public abstract String getPath();
+
+}

src/seedu/addressbook/storage/StorageFile.java

@@ -15,10 +15,9 @@
 /**
  * Represents the file used to store address book data.
  */
-public class StorageFile {
+public class StorageFile extends Storage {
 
-    /** Default file path used if the user doesn't provide the file name. */
-    public static final String DEFAULT_STORAGE_FILEPATH = "addressbook.txt";
+	static String DEFAULT_STORAGE_FILEPATH = "addressbook.txt";
 
     /* Note: Note the use of nested classes below.
      * More info https://docs.oracle.com/javase/tutorial/java/javaOO/nested.html
@@ -78,12 +77,11 @@ private static boolean isValidPath(Path filePath) {
         return filePath.toString().endsWith(".txt");
     }
 
-    /**
-     * Saves all data to this storage file.
-     *
-     * @throws StorageOperationException if there were errors converting and/or storing data to file.
-     */
-    public void save(AddressBook addressBook) throws StorageOperationException {
+    /* (non-Javadoc)
+	 * @see seedu.addressbook.storage.Storage#save(seedu.addressbook.data.AddressBook)
+	 */
+    @Override
+	public void save(AddressBook addressBook) throws StorageOperationException {
 
         /* Note: Note the 'try with resource' statement below.
          * More info: https://docs.oracle.com/javase/tutorial/essential/exceptions/tryResourceClose.html
@@ -103,12 +101,11 @@ public void save(AddressBook addressBook) throws StorageOperationException {
         }
     }
 
-    /**
-     * Loads data from this storage file.
-     *
-     * @throws StorageOperationException if there were errors reading and/or converting data from file.
-     */
-    public AddressBook load() throws StorageOperationException {
+    /* (non-Javadoc)
+	 * @see seedu.addressbook.storage.Storage#load()
+	 */
+    @Override
+	public AddressBook load() throws StorageOperationException {
         try (final Reader fileReader =
                      new BufferedReader(new FileReader(path.toFile()))) {
 
@@ -141,7 +138,11 @@ public AddressBook load() throws StorageOperationException {
         }
     }
 
-    public String getPath() {
+    /* (non-Javadoc)
+	 * @see seedu.addressbook.storage.Storage#getPath()
+	 */
+    @Override
+	public String getPath() {
         return path.toString();
     }
 

test/java/seedu/addressbook/logic/LogicTest.java

@@ -12,6 +12,7 @@
 import seedu.addressbook.data.person.*;
 import seedu.addressbook.data.tag.Tag;
 import seedu.addressbook.data.tag.UniqueTagList;
+import seedu.addressbook.storage.Storage;
 import seedu.addressbook.storage.StorageFile;
 
 import java.util.*;
@@ -28,7 +29,7 @@ public class LogicTest {
     @Rule
     public TemporaryFolder saveFolder = new TemporaryFolder();
 
-    private StorageFile saveFile;
+    private Storage saveFile;
     private AddressBook addressBook;
     private Logic logic;
 

test/java/seedu/addressbook/storage/StorageFileTest.java

@@ -44,7 +44,7 @@ public void constructor_noTxtExtension_exceptionThrown() throws Exception {
     @Test
     public void load_invalidFormat_exceptionThrown() throws Exception {
         // The file contains valid xml data, but does not match the AddressBook class
-        StorageFile storage = getStorage("InvalidData.txt");
+        Storage storage = getStorage("InvalidData.txt");
         thrown.expect(StorageOperationException.class);
         storage.load();
     }
@@ -61,15 +61,15 @@ public void load_validFormat() throws Exception {
 
     @Test
     public void save_nullAddressBook_exceptionThrown() throws Exception {
-        StorageFile storage = getTempStorage();
+        Storage storage = getTempStorage();
         thrown.expect(NullPointerException.class);
         storage.save(null);
     }
 
     @Test
     public void save_validAddressBook() throws Exception {
         AddressBook ab = getTestAddressBook();
-        StorageFile storage = getTempStorage();
+        Storage storage = getTempStorage();
         storage.save(ab);
 
         assertStorageFilesEqual(storage, getStorage("ValidData.txt"));
@@ -80,15 +80,15 @@ public void save_validAddressBook() throws Exception {
     /**
      * Asserts that the contents of two storage files are the same.
      */
-    private void assertStorageFilesEqual(StorageFile sf1, StorageFile sf2) throws Exception {
+    private void assertStorageFilesEqual(Storage sf1, Storage sf2) throws Exception {
         assertTextFilesEqual(Paths.get(sf1.getPath()), Paths.get(sf2.getPath()));
     }
 
-    private StorageFile getStorage(String fileName) throws Exception {
+    private Storage getStorage(String fileName) throws Exception {
         return new StorageFile(TEST_DATA_FOLDER + "/" + fileName);
     }
 
-    private StorageFile getTempStorage() throws Exception {
+    private Storage getTempStorage() throws Exception {
         return new StorageFile(testFolder.getRoot().getPath() + "/" + "temp.txt");
     }