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Delete 'tool/DataUtils.java'

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pzk5osbfw 3 months ago
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tool/DataUtils.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.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;
/**
* 该类提供了一系列用于操作笔记数据的工具方法，
* 涵盖了批量删除、移动笔记、查询文件夹和笔记信息等功能。
*/
public class DataUtils {
// 日志标签，方便在日志中识别与该类相关的信息
public static final String TAG = "DataUtils";
/**
* 批量删除指定ID集合中的笔记
*
* @param resolver 内容解析器，用于与内容提供者交互
* @param ids 要删除的笔记ID集合
* @return 删除操作是否成功，若集合为空或操作成功返回true，失败返回false
*/
public static boolean batchDeleteNotes(ContentResolver resolver, HashSet<Long> ids) {
// 若传入的ID集合为null，打印日志并返回true
if (ids == null) {
Log.d(TAG, "the ids is null");
return true;
}
// 若ID集合为空，打印日志并返回true
if (ids.size() == 0) {
Log.d(TAG, "no id is in the hashset");
return true;
}
// 用于存储批量操作的列表
ArrayList<ContentProviderOperation> operationList = new ArrayList<>();
// 遍历ID集合
for (long id : ids) {
// 若ID为根文件夹ID，打印错误日志并跳过此次循环
if (id == Notes.ID_ROOT_FOLDER) {
Log.e(TAG, "Don't delete system folder root");
continue;
}
// 创建一个删除操作的构建器
ContentProviderOperation.Builder builder = ContentProviderOperation
.newDelete(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id));
// 将构建好的操作添加到操作列表中
operationList.add(builder.build());
}
try {
// 批量执行操作
ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
// 若操作结果为空或长度为0或第一个结果为空，打印日志并返回false
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) {
// 处理远程异常，打印错误日志
Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
} catch (OperationApplicationException e) {
// 处理操作应用异常，打印错误日志
Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
}
return false;
}
/**
* 将指定ID的笔记移动到目标文件夹
*
* @param resolver 内容解析器
* @param id 要移动的笔记ID
* @param srcFolderId 笔记当前所在的文件夹ID
* @param desFolderId 目标文件夹ID
*/
public static void moveNoteToFoler(ContentResolver resolver, long id, long srcFolderId, long desFolderId) {
// 用于存储要更新的键值对
ContentValues values = new ContentValues();
// 设置笔记的父文件夹ID为目标文件夹ID
values.put(NoteColumns.PARENT_ID, desFolderId);
// 设置笔记的原始父文件夹ID为源文件夹ID
values.put(NoteColumns.ORIGIN_PARENT_ID, srcFolderId);
// 标记笔记为本地修改
values.put(NoteColumns.LOCAL_MODIFIED, 1);
// 执行更新操作
resolver.update(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id), values, null, null);
}
/**
* 批量将指定ID集合中的笔记移动到目标文件夹
*
* @param resolver 内容解析器
* @param ids 要移动的笔记ID集合
* @param folderId 目标文件夹ID
* @return 移动操作是否成功
*/
public static boolean batchMoveToFolder(ContentResolver resolver, HashSet<Long> ids, long folderId) {
// 若传入的ID集合为null，打印日志并返回true
if (ids == null) {
Log.d(TAG, "the ids is null");
return true;
}
// 用于存储批量操作的列表
ArrayList<ContentProviderOperation> operationList = new ArrayList<>();
// 遍历ID集合
for (long id : ids) {
// 创建一个更新操作的构建器
ContentProviderOperation.Builder builder = ContentProviderOperation
.newUpdate(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id));
// 设置笔记的父文件夹ID为目标文件夹ID
builder.withValue(NoteColumns.PARENT_ID, folderId);
// 标记笔记为本地修改
builder.withValue(NoteColumns.LOCAL_MODIFIED, 1);
// 将构建好的操作添加到操作列表中
operationList.add(builder.build());
}
try {
// 批量执行操作
ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
// 若操作结果为空或长度为0或第一个结果为空，打印日志并返回false
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) {
// 处理远程异常，打印错误日志
Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
} catch (OperationApplicationException e) {
// 处理操作应用异常，打印错误日志
Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
}
return false;
}
/**
* 获取用户创建的文件夹数量（排除系统文件夹）
*
* @param resolver 内容解析器
* @return 用户文件夹的数量
*/
public static int getUserFolderCount(ContentResolver resolver) {
// 查询用户文件夹的数量
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 {
// 获取查询结果中的计数
count = cursor.getInt(0);
} catch (IndexOutOfBoundsException e) {
// 处理索引越界异常，打印错误日志
Log.e(TAG, "get folder count failed:" + e.toString());
} finally {
// 关闭游标
cursor.close();
}
}
}
return count;
}
/**
* 检查指定笔记是否在数据库中可见
*
* @param resolver 内容解析器
* @param noteId 笔记ID
* @param type 笔记类型
* @return 笔记是否可见
*/
public static boolean visibleInNoteDatabase(ContentResolver resolver, long noteId, int type) {
// 查询指定笔记是否存在且不在回收站
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;
}
// 关闭游标
cursor.close();
}
return exist;
}
/**
* 检查指定笔记是否存在于数据库中
*
* @param resolver 内容解析器
* @param noteId 笔记ID
* @return 笔记是否存在
*/
public static boolean existInNoteDatabase(ContentResolver resolver, long noteId) {
// 查询指定笔记是否存在
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;
}
// 关闭游标
cursor.close();
}
return exist;
}
/**
* 检查指定数据是否存在于数据库中
*
* @param resolver 内容解析器
* @param dataId 数据ID
* @return 数据是否存在
*/
public static boolean existInDataDatabase(ContentResolver resolver, long dataId) {
// 查询指定数据是否存在
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;
}
// 关闭游标
cursor.close();
}
return exist;
}
/**
* 检查指定名称的可见文件夹是否存在于数据库中
*
* @param resolver 内容解析器
* @param name 文件夹名称
* @return 文件夹是否存在
*/
public static boolean checkVisibleFolderName(ContentResolver resolver, String name) {
// 查询指定名称的可见文件夹是否存在
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;
}
// 关闭游标
cursor.close();
}
return exist;
}
/**
* 获取指定文件夹下的笔记小部件属性集合
*
* @param resolver 内容解析器
* @param folderId 文件夹ID
* @return 笔记小部件属性集合
*/
public static HashSet<AppWidgetAttribute> getFolderNoteWidget(ContentResolver resolver, long folderId) {
// 查询指定文件夹下的笔记小部件信息
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<>();
do {
try {
// 创建小部件属性对象
AppWidgetAttribute widget = new AppWidgetAttribute();
// 设置小部件ID
widget.widgetId = c.getInt(0);
// 设置小部件类型
widget.widgetType = c.getInt(1);
// 将小部件属性添加到集合中
set.add(widget);
} catch (IndexOutOfBoundsException e) {
// 处理索引越界异常，打印错误日志
Log.e(TAG, e.toString());
}
} while (c.moveToNext());
}
// 关闭游标
c.close();
}
return set;
}
/**
* 根据笔记ID获取通话号码
*
* @param resolver 内容解析器
* @param noteId 笔记ID
* @return 通话号码，如果未找到则返回空字符串
*/
public static String getCallNumberByNoteId(ContentResolver resolver, long noteId) {
// 查询指定笔记ID对应的通话号码
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 {
// 获取通话号码
return cursor.getString(0);
} catch (IndexOutOfBoundsException e) {
// 处理索引越界异常，打印错误日志
Log.e(TAG, "Get call number fails " + e.toString());
} finally {
// 关闭游标
cursor.close();
}
}
return "";
}
/**
* 根据电话号码和通话日期获取笔记ID
*
* @param resolver 内容解析器
* @param phoneNumber 电话号码
* @param callDate 通话日期
* @return 笔记ID，如果未找到则返回0
*/
public static long getNoteIdByPhoneNumberAndCallDate(ContentResolver resolver, String phoneNumber, long callDate) {
// 查询指定电话号码和通话日期对应的笔记ID
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 {
// 获取笔记ID
return cursor.getLong(0);
} catch (IndexOutOfBoundsException e) {
// 处理索引越界异常，打印错误日志
Log.e(TAG, "Get call note id fails " + e.toString());
}
}
// 关闭游标
cursor.close();
}
return 0;
}
/**
* 根据笔记ID获取笔记摘要
*
* @param resolver 内容解析器
* @param noteId 笔记ID
* @return 笔记摘要，如果未找到则抛出异常
*/
public static String getSnippetById(ContentResolver resolver, long noteId) {
// 查询指定笔记ID对应的摘要
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()) {
// 获取笔记摘要
snippet = cursor.getString(0);
}
// 关闭游标
cursor.close();
return snippet;
}
// 若未找到笔记，抛出异常
throw new IllegalArgumentException("Note is not found with id: " + noteId);
}
/**
* 格式化笔记摘要，去除首尾空格并截取第一行
*
* @param snippet 原始笔记摘要
* @return 格式化后的笔记摘要
*/
public static String getFormattedSnippet(String snippet) {
if (snippet != null) {
// 去除首尾空格
snippet = snippet.trim();
// 查找换行符位置
int index = snippet.indexOf('\n');
if (index != -1) {
// 截取第一行
snippet = snippet.substring(0, index);
}
}
return snippet;
}
}
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