diff --git a/Notes.java b/Notes.java
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+++ b/Notes.java
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+/*
+ * Copyright (c) 2010-2011, The MiCode Open Source Community (www.micode.net)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *        http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+ package net.micode.notes.data;
+
+ import android.net.Uri;
+ public class Notes {
+     public static final String AUTHORITY = "micode_notes";
+     public static final String TAG = "Notes";
+     public static final int TYPE_NOTE     = 0;
+     public static final int TYPE_FOLDER   = 1;
+     public static final int TYPE_SYSTEM   = 2;
+ 
+     /**
+      * Following IDs are system folders' identifiers
+      * {@link Notes#ID_ROOT_FOLDER } is default folder
+      * {@link Notes#ID_TEMPARAY_FOLDER } is for notes belonging no folder
+      * {@link Notes#ID_CALL_RECORD_FOLDER} is to store call records
+      */
+     public static final int ID_ROOT_FOLDER = 0;
+     public static final int ID_TEMPARAY_FOLDER = -1;
+     public static final int ID_CALL_RECORD_FOLDER = -2;
+     public static final int ID_TRASH_FOLER = -3;
+ 
+     public static final String INTENT_EXTRA_ALERT_DATE = "net.micode.notes.alert_date";
+     public static final String INTENT_EXTRA_BACKGROUND_ID = "net.micode.notes.background_color_id";
+     public static final String INTENT_EXTRA_WIDGET_ID = "net.micode.notes.widget_id";
+     public static final String INTENT_EXTRA_WIDGET_TYPE = "net.micode.notes.widget_type";
+     public static final String INTENT_EXTRA_FOLDER_ID = "net.micode.notes.folder_id";
+     public static final String INTENT_EXTRA_CALL_DATE = "net.micode.notes.call_date";
+ 
+     public static final int TYPE_WIDGET_INVALIDE      = -1;
+     public static final int TYPE_WIDGET_2X            = 0;
+     public static final int TYPE_WIDGET_4X            = 1;
+ 
+     public static class DataConstants {
+         public static final String NOTE = TextNote.CONTENT_ITEM_TYPE;
+         public static final String CALL_NOTE = CallNote.CONTENT_ITEM_TYPE;
+     }
+ 
+     /**
+      * Uri to query all notes and folders
+      */
+     public static final Uri CONTENT_NOTE_URI = Uri.parse("content://" + AUTHORITY + "/note");
+ 
+     /**
+      * Uri to query data
+      */
+     public static final Uri CONTENT_DATA_URI = Uri.parse("content://" + AUTHORITY + "/data");
+ 
+     public interface NoteColumns {
+         /**
+          * The unique ID for a row
+          * <P> Type: INTEGER (long) </P>
+          */
+         public static final String ID = "_id";
+ 
+         /**
+          * The parent's id for note or folder
+          * <P> Type: INTEGER (long) </P>
+          */
+         public static final String PARENT_ID = "parent_id";
+ 
+         /**
+          * Created data for note or folder
+          * <P> Type: INTEGER (long) </P>
+          */
+         public static final String CREATED_DATE = "created_date";
+ 
+         /**
+          * Latest modified date
+          * <P> Type: INTEGER (long) </P>
+          */
+         public static final String MODIFIED_DATE = "modified_date";
+ 
+ 
+         /**
+          * Alert date
+          * <P> Type: INTEGER (long) </P>
+          */
+         public static final String ALERTED_DATE = "alert_date";
+ 
+         /**
+          * Folder's name or text content of note
+          * <P> Type: TEXT </P>
+          */
+         public static final String SNIPPET = "snippet";
+ 
+         /**
+          * Note's widget id
+          * <P> Type: INTEGER (long) </P>
+          */
+         public static final String WIDGET_ID = "widget_id";
+ 
+         /**
+          * Note's widget type
+          * <P> Type: INTEGER (long) </P>
+          */
+         public static final String WIDGET_TYPE = "widget_type";
+ 
+         /**
+          * Note's background color's id
+          * <P> Type: INTEGER (long) </P>
+          */
+         public static final String BG_COLOR_ID = "bg_color_id";
+ 
+         /**
+          * For text note, it doesn't has attachment, for multi-media
+          * note, it has at least one attachment
+          * <P> Type: INTEGER </P>
+          */
+         public static final String HAS_ATTACHMENT = "has_attachment";
+ 
+         /**
+          * Folder's count of notes
+          * <P> Type: INTEGER (long) </P>
+          */
+         public static final String NOTES_COUNT = "notes_count";
+ 
+         /**
+          * The file type: folder or note
+          * <P> Type: INTEGER </P>
+          */
+         public static final String TYPE = "type";
+ 
+         /**
+          * The last sync id
+          * <P> Type: INTEGER (long) </P>
+          */
+         public static final String SYNC_ID = "sync_id";
+ 
+         /**
+          * Sign to indicate local modified or not
+          * <P> Type: INTEGER </P>
+          */
+         public static final String LOCAL_MODIFIED = "local_modified";
+ 
+         /**
+          * Original parent id before moving into temporary folder
+          * <P> Type : INTEGER </P>
+          */
+         public static final String ORIGIN_PARENT_ID = "origin_parent_id";
+ 
+         /**
+          * The gtask id
+          * <P> Type : TEXT </P>
+          */
+         public static final String GTASK_ID = "gtask_id";
+ 
+         /**
+          * The version code
+          * <P> Type : INTEGER (long) </P>
+          */
+         public static final String VERSION = "version";
+     }
+ 
+     public interface DataColumns {
+         /**
+          * The unique ID for a row
+          * <P> Type: INTEGER (long) </P>
+          */
+         public static final String ID = "_id";
+ 
+         /**
+          * The MIME type of the item represented by this row.
+          * <P> Type: Text </P>
+          */
+         public static final String MIME_TYPE = "mime_type";
+ 
+         /**
+          * The reference id to note that this data belongs to
+          * <P> Type: INTEGER (long) </P>
+          */
+         public static final String NOTE_ID = "note_id";
+ 
+         /**
+          * Created data for note or folder
+          * <P> Type: INTEGER (long) </P>
+          */
+         public static final String CREATED_DATE = "created_date";
+ 
+         /**
+          * Latest modified date
+          * <P> Type: INTEGER (long) </P>
+          */
+         public static final String MODIFIED_DATE = "modified_date";
+ 
+         /**
+          * Data's content
+          * <P> Type: TEXT </P>
+          */
+         public static final String CONTENT = "content";
+ 
+ 
+         /**
+          * Generic data column, the meaning is {@link #MIMETYPE} specific, used for
+          * integer data type
+          * <P> Type: INTEGER </P>
+          */
+         public static final String DATA1 = "data1";
+ 
+         /**
+          * Generic data column, the meaning is {@link #MIMETYPE} specific, used for
+          * integer data type
+          * <P> Type: INTEGER </P>
+          */
+         public static final String DATA2 = "data2";
+ 
+         /**
+          * Generic data column, the meaning is {@link #MIMETYPE} specific, used for
+          * TEXT data type
+          * <P> Type: TEXT </P>
+          */
+         public static final String DATA3 = "data3";
+ 
+         /**
+          * Generic data column, the meaning is {@link #MIMETYPE} specific, used for
+          * TEXT data type
+          * <P> Type: TEXT </P>
+          */
+         public static final String DATA4 = "data4";
+ 
+         /**
+          * Generic data column, the meaning is {@link #MIMETYPE} specific, used for
+          * TEXT data type
+          * <P> Type: TEXT </P>
+          */
+         public static final String DATA5 = "data5";
+     }
+ 
+     public static final class TextNote implements DataColumns {
+         /**
+          * Mode to indicate the text in check list mode or not
+          * <P> Type: Integer 1:check list mode 0: normal mode </P>
+          */
+         public static final String MODE = DATA1;
+ 
+         public static final int MODE_CHECK_LIST = 1;
+ 
+         public static final String CONTENT_TYPE = "vnd.android.cursor.dir/text_note";
+ 
+         public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/text_note";
+ 
+         public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/text_note");
+     }
+ 
+     public static final class CallNote implements DataColumns {
+         /**
+          * Call date for this record
+          * <P> Type: INTEGER (long) </P>
+          */
+         public static final String CALL_DATE = DATA1;
+ 
+         /**
+          * Phone number for this record
+          * <P> Type: TEXT </P>
+          */
+         public static final String PHONE_NUMBER = DATA3;
+ 
+         public static final String CONTENT_TYPE = "vnd.android.cursor.dir/call_note";
+ 
+         public static final String CONTENT_ITEM_TYPE = "vnd.android.cursor.item/call_note";
+ 
+         public static final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/call_note");
+     }
+ }
+ 
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