git-test/src/tool/DataUtils.java

/*
 * 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.tool;

 import android.content.ContentProviderOperation;
 import android.content.ContentProviderResult;
 import android.content.ContentResolver;
 import android.content.ContentUris;
 import android.content.ContentValues;
 import android.content.OperationApplicationException;
 import android.database.Cursor;
 import android.os.RemoteException;
 import android.util.Log;
 
 import net.micode.notes.data.Notes;
 import net.micode.notes.data.Notes.CallNote;
 import net.micode.notes.data.Notes.NoteColumns;
 import net.micode.notes.ui.NotesListAdapter.AppWidgetAttribute;
 
 import java.util.ArrayList;
 import java.util.HashSet;
 
 
 
 /*
 这段主要是一个工具类DataUtils，提供了一系列操作数据库的方法，比如：
 批量删除笔记
 将笔记移动到指定文件夹之类的。。。
 
 这个工具类主要思想是封装数据库操作的细节，提供一组简化的方法
 使开发者能够更方便地进行对笔记和相关数据的操作
 通过使用ContentResolver与ContentProvider进行交互
 对数据库执行查询、插入、更新和删除等操作
 它隐藏了底层数据库的具体实现细节
 将复杂的数据库操作封装成简单易用的方法
 使得开发者不需要关心数据库的具体操作语句和流程
 只需调用相应的方法即可完成操作
 
 封装+抽象
 方便开发者对数据库中的笔记和相关数据进行操作
  */
 
 public class DataUtils {
     public static final String TAG = "DataUtils";
     public static boolean batchDeleteNotes(ContentResolver resolver, HashSet<Long> ids) {
         if (ids == null) {
             Log.d(TAG, "the ids is null");
             return true;
         }
         if (ids.size() == 0) {
             Log.d(TAG, "no id is in the hashset");
             return true;
         }
 
         ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
         for (long id : ids) {
             if(id == Notes.ID_ROOT_FOLDER) {
                 Log.e(TAG, "Don't delete system folder root");
                 continue;
             }
             ContentProviderOperation.Builder builder = ContentProviderOperation
                     .newDelete(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id));
             operationList.add(builder.build());
         }
         try {
             ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
             if (results == null || results.length == 0 || results[0] == null) {
                 Log.d(TAG, "delete notes failed, ids:" + ids.toString());
                 return false;
             }
             return true;
         } catch (RemoteException e) {
             Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
         } catch (OperationApplicationException e) {
             Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
         }
         return false;
     }
 
     public static void moveNoteToFoler(ContentResolver resolver, long id, long srcFolderId, long desFolderId) {
         ContentValues values = new ContentValues();
         values.put(NoteColumns.PARENT_ID, desFolderId);
         values.put(NoteColumns.ORIGIN_PARENT_ID, srcFolderId);
         values.put(NoteColumns.LOCAL_MODIFIED, 1);
         resolver.update(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id), values, null, null);
     }
 
     public static boolean batchMoveToFolder(ContentResolver resolver, HashSet<Long> ids,
             long folderId) {
         if (ids == null) {
             Log.d(TAG, "the ids is null");
             return true;
         }
 
         ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
         for (long id : ids) {
             ContentProviderOperation.Builder builder = ContentProviderOperation
                     .newUpdate(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id));
             builder.withValue(NoteColumns.PARENT_ID, folderId);
             builder.withValue(NoteColumns.LOCAL_MODIFIED, 1);
             operationList.add(builder.build());
         }
 
         try {
             ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
             if (results == null || results.length == 0 || results[0] == null) {
                 Log.d(TAG, "delete notes failed, ids:" + ids.toString());
                 return false;
             }
             return true;
         } catch (RemoteException e) {
             Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
         } catch (OperationApplicationException e) {
             Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
         }
         return false;
     }
 
     /**
      * Get the all folder count except system folders {@link Notes#TYPE_SYSTEM}}
      */
     public static int getUserFolderCount(ContentResolver resolver) {
         Cursor cursor =resolver.query(Notes.CONTENT_NOTE_URI,
                 new String[] { "COUNT(*)" },
                 NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>?",
                 new String[] { String.valueOf(Notes.TYPE_FOLDER), String.valueOf(Notes.ID_TRASH_FOLER)},
                 null);
 
         int count = 0;
         if(cursor != null) {
             if(cursor.moveToFirst()) {
                 try {
                     count = cursor.getInt(0);
                 } catch (IndexOutOfBoundsException e) {
                     Log.e(TAG, "get folder count failed:" + e.toString());
                 } finally {
                     cursor.close();
                 }
             }
         }
         return count;
     }
 
     public static boolean visibleInNoteDatabase(ContentResolver resolver, long noteId, int type) {
         Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId),
                 null,
                 NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER,
                 new String [] {String.valueOf(type)},
                 null);
 
         boolean exist = false;
         if (cursor != null) {
             if (cursor.getCount() > 0) {
                 exist = true;
             }
             cursor.close();
         }
         return exist;
     }
 
     public static boolean existInNoteDatabase(ContentResolver resolver, long noteId) {
         Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId),
                 null, null, null, null);
 
         boolean exist = false;
         if (cursor != null) {
             if (cursor.getCount() > 0) {
                 exist = true;
             }
             cursor.close();
         }
         return exist;
     }
 
     public static boolean existInDataDatabase(ContentResolver resolver, long dataId) {
         Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId),
                 null, null, null, null);
 
         boolean exist = false;
         if (cursor != null) {
             if (cursor.getCount() > 0) {
                 exist = true;
             }
             cursor.close();
         }
         return exist;
     }
 
     public static boolean checkVisibleFolderName(ContentResolver resolver, String name) {
         Cursor cursor = resolver.query(Notes.CONTENT_NOTE_URI, null,
                 NoteColumns.TYPE + "=" + Notes.TYPE_FOLDER +
                 " AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER +
                 " AND " + NoteColumns.SNIPPET + "=?",
                 new String[] { name }, null);
         boolean exist = false;
         if(cursor != null) {
             if(cursor.getCount() > 0) {
                 exist = true;
             }
             cursor.close();
         }
         return exist;
     }
 
     public static HashSet<AppWidgetAttribute> getFolderNoteWidget(ContentResolver resolver, long folderId) {
         Cursor c = resolver.query(Notes.CONTENT_NOTE_URI,
                 new String[] { NoteColumns.WIDGET_ID, NoteColumns.WIDGET_TYPE },
                 NoteColumns.PARENT_ID + "=?",
                 new String[] { String.valueOf(folderId) },
                 null);
 
         HashSet<AppWidgetAttribute> set = null;
         if (c != null) {
             if (c.moveToFirst()) {
                 set = new HashSet<AppWidgetAttribute>();
                 do {
                     try {
                         AppWidgetAttribute widget = new AppWidgetAttribute();
                         widget.widgetId = c.getInt(0);
                         widget.widgetType = c.getInt(1);
                         set.add(widget);
                     } catch (IndexOutOfBoundsException e) {
                         Log.e(TAG, e.toString());
                     }
                 } while (c.moveToNext());
             }
             c.close();
         }
         return set;
     }
 
     public static String getCallNumberByNoteId(ContentResolver resolver, long noteId) {
         Cursor cursor = resolver.query(Notes.CONTENT_DATA_URI,
                 new String [] { CallNote.PHONE_NUMBER },
                 CallNote.NOTE_ID + "=? AND " + CallNote.MIME_TYPE + "=?",
                 new String [] { String.valueOf(noteId), CallNote.CONTENT_ITEM_TYPE },
                 null);
 
         if (cursor != null && cursor.moveToFirst()) {
             try {
                 return cursor.getString(0);
             } catch (IndexOutOfBoundsException e) {
                 Log.e(TAG, "Get call number fails " + e.toString());
             } finally {
                 cursor.close();
             }
         }
         return "";
     }
 
     public static long getNoteIdByPhoneNumberAndCallDate(ContentResolver resolver, String phoneNumber, long callDate) {
         Cursor cursor = resolver.query(Notes.CONTENT_DATA_URI,
                 new String [] { CallNote.NOTE_ID },
                 CallNote.CALL_DATE + "=? AND " + CallNote.MIME_TYPE + "=? AND PHONE_NUMBERS_EQUAL("
                 + CallNote.PHONE_NUMBER + ",?)",
                 new String [] { String.valueOf(callDate), CallNote.CONTENT_ITEM_TYPE, phoneNumber },
                 null);
 
         if (cursor != null) {
             if (cursor.moveToFirst()) {
                 try {
                     return cursor.getLong(0);
                 } catch (IndexOutOfBoundsException e) {
                     Log.e(TAG, "Get call note id fails " + e.toString());
                 }
             }
             cursor.close();
         }
         return 0;
     }
 
     public static String getSnippetById(ContentResolver resolver, long noteId) {
         Cursor cursor = resolver.query(Notes.CONTENT_NOTE_URI,
                 new String [] { NoteColumns.SNIPPET },
                 NoteColumns.ID + "=?",
                 new String [] { String.valueOf(noteId)},
                 null);
 
         if (cursor != null) {
             String snippet = "";
             if (cursor.moveToFirst()) {
                 snippet = cursor.getString(0);
             }
             cursor.close();
             return snippet;
         }
         throw new IllegalArgumentException("Note is not found with id: " + noteId);
     }
 
     public static String getFormattedSnippet(String snippet) {
         if (snippet != null) {
             snippet = snippet.trim();
             int index = snippet.indexOf('\n');
             if (index != -1) {
                 snippet = snippet.substring(0, index);
             }
         }
         return snippet;
     }
 }