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DataUtils部分注释

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dingxuXie 1 year ago
parent 87a684cf13
commit 21c15bc24c
1 changed files with 233 additions and 165 deletions
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114
Notes-master/src/net/micode/notes/tool/DataUtils.java
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@ -13,7 +13,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*/
//与backup部分库类似，不再赘述
package net.micode.notes.tool;
import android.content.ContentProviderOperation;
@ -38,83 +38,122 @@ import java.util.HashSet;
public class DataUtils {
public static final String TAG = "DataUtils";
public static boolean batchDeleteNotes(ContentResolver resolver, HashSet<Long> ids) {
// 检查提供的ID集合是否为null
if (ids == null) {
Log.d(TAG, "the ids is null");
return true;
}
// 检查ID集合是否为空
if (ids.size() == 0) {
Log.d(TAG, "no id is in the hashset");
return true;
}
// TODO: 实现根据提供的ids批量删除笔记的逻辑
return false;
}
}
public boolean deleteNotes(long[] ids) {
// 创建一个内容提供者操作的列表，用于存储删除操作
ArrayList<ContentProviderOperation> operationList = new ArrayList<ContentProviderOperation>();
// 遍历所有给定的ID
for (long id : ids) {
// 检查ID是否为系统根文件夹ID，如果是则跳过删除操作
if(id == Notes.ID_ROOT_FOLDER) {
Log.e(TAG, "Don't delete system folder root");
continue;
}
// 为每个非系统根文件夹ID构建一个删除操作，并添加到操作列表中
ContentProviderOperation.Builder builder = ContentProviderOperation
.newDelete(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id));
operationList.add(builder.build());
}
try {
// 执行内容提供者操作列表中的所有操作
ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
// 检查删除操作的结果，如果没有成功删除任何笔记，则返回false
if (results == null || results.length == 0 || results[0] == null) {
Log.d(TAG, "delete notes failed, ids:" + ids.toString());
return false;
}
// 所有删除操作执行成功，返回true
return true;
} catch (RemoteException e) {
// 处理执行删除操作时可能出现的远程异常
Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
} catch (OperationApplicationException e) {
// 处理执行删除操作时可能出现的操作应用异常
Log.e(TAG, String.format("%s: %s", e.toString(), e.getMessage()));
}
// 如果有任何异常发生，则返回false
return false;
}
/**
* 将指定的笔记移动到新的文件夹中。
*
* @param resolver 内容解析器，用于执行数据库操作。
* @param id 笔记的ID，表示要移动的笔记。
* @param srcFolderId 源文件夹ID，表示当前笔记所在的文件夹。
* @param desFolderId 目标文件夹ID，表示要将笔记移动到的新文件夹。
*/
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);
values.put(NoteColumns.PARENT_ID, desFolderId); // 设置新的父文件夹ID
values.put(NoteColumns.ORIGIN_PARENT_ID, srcFolderId); // 记录原始父文件夹ID
values.put(NoteColumns.LOCAL_MODIFIED, 1); // 标记笔记已本地修改
resolver.update(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, id), values, null, null); // 执行更新操作
}
/**
* 批量将笔记移动到指定的文件夹中。
*
* @param resolver 内容解析器，用于执行数据库操作。
* @param ids 需要移动的笔记ID集合。
* @param folderId 目标文件夹ID，表示要将笔记移动到的新文件夹。
* @return 如果移动操作成功执行，则返回true；否则返回false。
*/
public static boolean batchMoveToFolder(ContentResolver resolver, HashSet<Long> ids,
long folderId) {
if (ids == null) {
Log.d(TAG, "the ids is null");
return true;
return true; // 如果ID集为空，视为操作成功
}
// 准备批量操作
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);
builder.withValue(NoteColumns.PARENT_ID, folderId); // 设置新的父文件夹ID
builder.withValue(NoteColumns.LOCAL_MODIFIED, 1); // 标记笔记已本地修改
operationList.add(builder.build());
}
try {
ContentProviderResult[] results = resolver.applyBatch(Notes.AUTHORITY, operationList);
// 检查操作结果
if (results == null || results.length == 0 || results[0] == null) {
Log.d(TAG, "delete notes failed, ids:" + ids.toString());
return false;
return false; // 如果没有成功的结果，返回false
}
return true;
return true; // 批量操作成功
} 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;
return false; // 捕获异常，返回失败
}
/**
* Get the all folder count except system folders {@link Notes#TYPE_SYSTEM}}
*/
public static int getUserFolderCount(ContentResolver resolver) {
// 查询数据库中类型为文件夹且父ID不为回收站ID的笔记数量
Cursor cursor =resolver.query(Notes.CONTENT_NOTE_URI,
new String[] { "COUNT(*)" },
NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>?",
@ -123,20 +162,24 @@ public class DataUtils {
int count = 0;
if(cursor != null) {
// 如果查询结果不为空，则尝试获取计数结果
if(cursor.moveToFirst()) {
try {
count = cursor.getInt(0);
count = cursor.getInt(0); // 获取查询结果中的计数
} catch (IndexOutOfBoundsException e) {
// 处理可能的索引越界异常
Log.e(TAG, "get folder count failed:" + e.toString());
} finally {
// 无论是否成功，最后都关闭Cursor
cursor.close();
}
}
}
return count;
return count; // 返回文件夹数量
}
public static boolean visibleInNoteDatabase(ContentResolver resolver, long noteId, int type) {
// 根据noteId和类型查询数据库，排除父ID为垃圾文件夹的情况
Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId),
null,
NoteColumns.TYPE + "=? AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER,
@ -145,59 +188,70 @@ public class DataUtils {
boolean exist = false;
if (cursor != null) {
// 检查查询结果是否有记录
if (cursor.getCount() > 0) {
exist = true;
}
// 关闭Cursor
cursor.close();
}
return exist;
}
public static boolean existInNoteDatabase(ContentResolver resolver, long noteId) {
// 使用ContentUris和noteId构建查询URI，并执行查询
Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId),
null, null, null, null);
boolean exist = false;
if (cursor != null) {
// 如果查询结果不为空，检查是否有记录匹配
if (cursor.getCount() > 0) {
exist = true;
}
// 关闭Cursor
cursor.close();
}
return exist;
}
public static boolean existInDataDatabase(ContentResolver resolver, long dataId) {
// 使用ContentUris和dataId构建查询URI，并执行查询
Cursor cursor = resolver.query(ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId),
null, null, null, null);
boolean exist = false;
if (cursor != null) {
// 如果查询结果不为空，检查是否有记录匹配
if (cursor.getCount() > 0) {
exist = true;
}
// 关闭Cursor
cursor.close();
}
return exist;
}
public static boolean checkVisibleFolderName(ContentResolver resolver, String name) {
// 构建查询条件，查询类型为文件夹且非回收站中的记录，并执行查询
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) {
// 如果查询结果不为空，检查是否有记录匹配
if(cursor.getCount() > 0) {
exist = true;
}
// 关闭Cursor
cursor.close();
}
return exist;
}
public static HashSet<AppWidgetAttribute> getFolderNoteWidget(ContentResolver resolver, long folderId) {
// 根据指定的文件夹ID查询笔记小部件的ID和类型
Cursor c = resolver.query(Notes.CONTENT_NOTE_URI,
new String[] { NoteColumns.WIDGET_ID, NoteColumns.WIDGET_TYPE },
NoteColumns.PARENT_ID + "=?",
@ -206,25 +260,27 @@ public class DataUtils {
HashSet<AppWidgetAttribute> set = null;
if (c != null) {
// 如果查询结果不为空，则遍历结果并填充集合
if (c.moveToFirst()) {
set = new HashSet<AppWidgetAttribute>();
do {
try {
AppWidgetAttribute widget = new AppWidgetAttribute();
widget.widgetId = c.getInt(0);
widget.widgetType = c.getInt(1);
widget.widgetId = c.getInt(0); // 获取小部件ID
widget.widgetType = c.getInt(1); // 获取小部件类型
set.add(widget);
} catch (IndexOutOfBoundsException e) {
Log.e(TAG, e.toString());
}
} while (c.moveToNext());
}
c.close();
c.close(); // 关闭游标
}
return set;
}
public static String getCallNumberByNoteId(ContentResolver resolver, long noteId) {
// 根据笔记ID和MIME类型查询关联的电话号码
Cursor cursor = resolver.query(Notes.CONTENT_DATA_URI,
new String [] { CallNote.PHONE_NUMBER },
CallNote.NOTE_ID + "=? AND " + CallNote.MIME_TYPE + "=?",
@ -233,17 +289,17 @@ public class DataUtils {
if (cursor != null && cursor.moveToFirst()) {
try {
return cursor.getString(0);
return cursor.getString(0); // 获取电话号码
} catch (IndexOutOfBoundsException e) {
Log.e(TAG, "Get call number fails " + e.toString());
} finally {
cursor.close();
cursor.close(); // 关闭游标
}
}
return "";
return ""; // 如果未查询到电话号码，则返回空字符串
}
public static long getNoteIdByPhoneNumberAndCallDate(ContentResolver resolver, String phoneNumber, long callDate) {
// 构造查询语句，查询特定电话号码、通话日期和MIME类型的注释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("
@ -254,17 +310,23 @@ public class DataUtils {
if (cursor != null) {
if (cursor.moveToFirst()) {
try {
// 如果查询结果存在，返回第一行的注释ID
return cursor.getLong(0);
} catch (IndexOutOfBoundsException e) {
// 处理索引越界异常
Log.e(TAG, "Get call note id fails " + e.toString());
}
}
// 关闭游标
cursor.close();
}
// 如果查询无结果，返回0
return 0;
}
public static String getSnippetById(ContentResolver resolver, long noteId) {
// 构造查询语句，查询特定ID的注释的摘要
Cursor cursor = resolver.query(Notes.CONTENT_NOTE_URI,
new String [] { NoteColumns.SNIPPET },
NoteColumns.ID + "=?",
@ -274,17 +336,24 @@ public class DataUtils {
if (cursor != null) {
String snippet = "";
if (cursor.moveToFirst()) {
// 如果查询结果存在，获取摘要
snippet = cursor.getString(0);
}
// 关闭游标
cursor.close();
return snippet;
}
// 如果查询无结果，抛出异常
throw new IllegalArgumentException("Note is not found with id: " + noteId);
}
public static String getFormattedSnippet(String snippet) {
if (snippet != null) {
// 删除首尾空格
snippet = snippet.trim();
// 如果摘要中包含换行符，截取至第一个换行符前
int index = snippet.indexOf('\n');
if (index != -1) {
snippet = snippet.substring(0, index);
@ -292,4 +361,3 @@ public class DataUtils {
}
return snippet;
}
}

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