Update Note.java

java/net/micode/notes/model/Note.java

@@ -35,14 +35,16 @@ import java.util.ArrayList;
 
 
 public class Note {
-    private ContentValues mNoteDiffValues;
+    private ContentValues mNoteDiffValues;//笔记差异值
-    private NoteData mNoteData;
+    private NoteData mNoteData;//笔记数据
     private static final String TAG = "Note";
     /**
      * Create a new note id for adding a new note to databases
      */
+	//获取新笔记id
     public static synchronized long getNewNoteId(Context context, long folderId) {
         // Create a new note in the database
+      //创建新笔记并插入数据库
         ContentValues values = new ContentValues();
         long createdTime = System.currentTimeMillis();
         values.put(NoteColumns.CREATED_DATE, createdTime);
@@ -65,46 +67,50 @@ public class Note {
         return noteId;
     }
 
+	// 构造函数
     public Note() {
         mNoteDiffValues = new ContentValues();
         mNoteData = new NoteData();
     }
 
+	 // 设置笔记值
     public void setNoteValue(String key, String value) {
         mNoteDiffValues.put(key, value);
         mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
         mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
     }
 
+	// 设置文本数据
     public void setTextData(String key, String value) {
         mNoteData.setTextData(key, value);
     }
 
+	// 设置文本数据ID
     public void setTextDataId(long id) {
         mNoteData.setTextDataId(id);
     }
-
+	// 获取文本数据ID
     public long getTextDataId() {
         return mNoteData.mTextDataId;
     }
-
+	// 设置通话数据ID
     public void setCallDataId(long id) {
         mNoteData.setCallDataId(id);
     }
-
+	// 设置通话数据
     public void setCallData(String key, String value) {
         mNoteData.setCallData(key, value);
     }
-
+	 // 检查是否有本地修改
     public boolean isLocalModified() {
         return mNoteDiffValues.size() > 0 || mNoteData.isLocalModified();
     }
-
+	// 同步笔记数据到ContentProvider
     public boolean syncNote(Context context, long noteId) {
         if (noteId <= 0) {
             throw new IllegalArgumentException("Wrong note id:" + noteId);
         }
-
+       // 更新笔记基本信息
         if (!isLocalModified()) {
             return true;
         }
@@ -118,10 +124,12 @@ public class Note {
                 ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), mNoteDiffValues, null,
                 null) == 0) {
             Log.e(TAG, "Update note error, should not happen");
+          // 即使更新失败也继续处理数据
             // Do not return, fall through
         }
         mNoteDiffValues.clear();
 
+      // 更新笔记关联数据
         if (mNoteData.isLocalModified()
                 && (mNoteData.pushIntoContentResolver(context, noteId) == null)) {
             return false;
@@ -129,55 +137,54 @@ public class Note {
 
         return true;
     }
-
+	// 内部类：管理笔记关联数据
     private class NoteData {
-        private long mTextDataId;
+        private long mTextDataId;  // 文本数据ID
-
+        private ContentValues mTextDataValues;  // 文本数据值
-        private ContentValues mTextDataValues;
+        private long mCallDataId;  // 通话数据ID
-
+        private ContentValues mCallDataValues;  // 通话数据值
-        private long mCallDataId;
-
-        private ContentValues mCallDataValues;
 
         private static final String TAG = "NoteData";
 
+			// 构造函数
         public NoteData() {
             mTextDataValues = new ContentValues();
             mCallDataValues = new ContentValues();
             mTextDataId = 0;
             mCallDataId = 0;
         }
-
+			// 检查是否有本地修改
         boolean isLocalModified() {
             return mTextDataValues.size() > 0 || mCallDataValues.size() > 0;
         }
 
+			// 设置文本数据ID
         void setTextDataId(long id) {
             if(id <= 0) {
                 throw new IllegalArgumentException("Text data id should larger than 0");
             }
             mTextDataId = id;
         }
-
+			// 设置通话数据ID
         void setCallDataId(long id) {
             if (id <= 0) {
                 throw new IllegalArgumentException("Call data id should larger than 0");
             }
             mCallDataId = id;
         }
-
+			// 设置通话数据
         void setCallData(String key, String value) {
             mCallDataValues.put(key, value);
             mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
             mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
         }
-
+			// 设置文本数据
         void setTextData(String key, String value) {
             mTextDataValues.put(key, value);
             mNoteDiffValues.put(NoteColumns.LOCAL_MODIFIED, 1);
             mNoteDiffValues.put(NoteColumns.MODIFIED_DATE, System.currentTimeMillis());
         }
-
+			 // 将数据推送到ContentProvider
         Uri pushIntoContentResolver(Context context, long noteId) {
             /**
              * Check for safety
@@ -189,9 +196,11 @@ public class Note {
             ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
             ContentProviderOperation.Builder builder = null;
 
+          // 处理文本数据
             if(mTextDataValues.size() > 0) {
                 mTextDataValues.put(DataColumns.NOTE_ID, noteId);
                 if (mTextDataId == 0) {
+                  // 插入新文本数据
                     mTextDataValues.put(DataColumns.MIME_TYPE, TextNote.CONTENT_ITEM_TYPE);
                     Uri uri = context.getContentResolver().insert(Notes.CONTENT_DATA_URI,
                             mTextDataValues);
@@ -203,6 +212,7 @@ public class Note {
                         return null;
                     }
                 } else {
+                  // 更新现有文本数据
                     builder = ContentProviderOperation.newUpdate(ContentUris.withAppendedId(
                             Notes.CONTENT_DATA_URI, mTextDataId));
                     builder.withValues(mTextDataValues);
@@ -211,9 +221,11 @@ public class Note {
                 mTextDataValues.clear();
             }
 
+           // 处理通话数据
             if(mCallDataValues.size() > 0) {
                 mCallDataValues.put(DataColumns.NOTE_ID, noteId);
                 if (mCallDataId == 0) {
+                    // 插入新通话数据
                     mCallDataValues.put(DataColumns.MIME_TYPE, CallNote.CONTENT_ITEM_TYPE);
                     Uri uri = context.getContentResolver().insert(Notes.CONTENT_DATA_URI,
                             mCallDataValues);
@@ -225,6 +237,7 @@ public class Note {
                         return null;
                     }
                 } else {
+                  // 更新现有通话数据
                     builder = ContentProviderOperation.newUpdate(ContentUris.withAppendedId(
                             Notes.CONTENT_DATA_URI, mCallDataId));
                     builder.withValues(mCallDataValues);
@@ -233,6 +246,7 @@ public class Note {
                 mCallDataValues.clear();
             }
 
+           // 批量执行操作
             if (operationList.size() > 0) {
                 try {
                     ContentProviderResult[] results = context.getContentResolver().applyBatch(