From 7bc5ce861153a7cc3d1a72b7e6d53b81ef908333 Mon Sep 17 00:00:00 2001 From: mgqmu5wef <3443803220@qq.com> Date: Wed, 13 Dec 2023 15:21:39 +0800 Subject: [PATCH] ADD file via upload --- SqlData.java | 224 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 224 insertions(+) create mode 100644 SqlData.java diff --git a/SqlData.java b/SqlData.java new file mode 100644 index 0000000..c75a730 --- /dev/null +++ b/SqlData.java @@ -0,0 +1,224 @@ +/* + * Description：用于支持小米便签最底层的数据库相关操作，和sqlnote的关系上是子集关系，即data是note的子集（节点）。 + * SqlData其实就是也就是所谓数据中的数据 + */ + +package net.micode.notes.gtask.data; +/* + * 功能描述： + * 实现过程： + * 参数注解： + * Made By CuiCan + */ + +public class SqlData { + /* + * 功能描述：得到类的简写名称存入字符串TAG中 + * 实现过程：调用getSimpleName ()函数 + * Made By CuiCan + */ + private static final String TAG = SqlData.class.getSimpleName(); + + private static final int INVALID_ID = -99999;//为mDataId置初始值-99999 + + + /** + * 来自Notes类中定义的DataColumn中的一些常量 + */ + + // 集合了interface DataColumns中所有SF常量 + public static final String[] PROJECTION_DATA = new String[] { + DataColumns.ID, DataColumns.MIME_TYPE, DataColumns.CONTENT, DataColumns.DATA1, + DataColumns.DATA3 + }; + + /** + * 以下五个变量作为sql表中5列的编号 + */ + public static final int DATA_ID_COLUMN = 0; + + public static final int DATA_MIME_TYPE_COLUMN = 1; + + public static final int DATA_CONTENT_COLUMN = 2; + + public static final int DATA_CONTENT_DATA_1_COLUMN = 3; + + public static final int DATA_CONTENT_DATA_3_COLUMN = 4; + + private ContentResolver mContentResolver; + //判断是否直接用Content生成，是为true，否则为false + private boolean mIsCreate; + + private long mDataId; + + private String mDataMimeType; + + private String mDataContent; + + private long mDataContentData1; + + private String mDataContentData3; + + private ContentValues mDiffDataValues; + + /* + * 功能描述：构造函数，用于初始化数据 + * 参数注解：mContentResolver用于获取ContentProvider提供的数据 + * 参数注解： mIsCreate表征当前数据是用哪种方式创建（两种构造函数的参数不同） + * 参数注解： + * Made By CuiCan + */ + public SqlData(Context context) { + mContentResolver = context.getContentResolver(); + mIsCreate = true; + mDataId = INVALID_ID;//mDataId置初始值-99999 + mDataMimeType = DataConstants.NOTE; + mDataContent = ""; + mDataContentData1 = 0; + mDataContentData3 = ""; + mDiffDataValues = new ContentValues(); + } + + + /* + * 功能描述：构造函数，初始化数据 + * 参数注解：mContentResolver用于获取ContentProvider提供的数据 + * 参数注解： mIsCreate表征当前数据是用哪种方式创建（两种构造函数的参数不同） + * 参数注解： + * Made By CuiCan + */ + public SqlData(Context context, Cursor c) { + mContentResolver = context.getContentResolver(); + mIsCreate = false; + loadFromCursor(c); + mDiffDataValues = new ContentValues(); + } + + /* + * 功能描述：从光标处加载数据 + * 从当前的光标处将五列的数据加载到该类的对象 + * Made By CuiCan + */ + private void loadFromCursor(Cursor c) { + mDataId = c.getLong(DATA_ID_COLUMN); + mDataMimeType = c.getString(DATA_MIME_TYPE_COLUMN); + mDataContent = c.getString(DATA_CONTENT_COLUMN); + mDataContentData1 = c.getLong(DATA_CONTENT_DATA_1_COLUMN); + mDataContentData3 = c.getString(DATA_CONTENT_DATA_3_COLUMN); + } + + + /* + * 功能描述：设置用于共享的数据，并提供异常抛出与处理机制 + * 参数注解： + * Made By CuiCan + */ + public void setContent(JSONObject js) throws JSONException { + //如果传入的JSONObject对象中有DataColumns.ID这一项，则设置，否则设为INVALID_ID + long dataId = js.has(DataColumns.ID) ? js.getLong(DataColumns.ID) : INVALID_ID; + if (mIsCreate || mDataId != dataId) { + mDiffDataValues.put(DataColumns.ID, dataId); + } + mDataId = dataId; + + String dataMimeType = js.has(DataColumns.MIME_TYPE) ? js.getString(DataColumns.MIME_TYPE) + : DataConstants.NOTE; + if (mIsCreate || !mDataMimeType.equals(dataMimeType)) { + mDiffDataValues.put(DataColumns.MIME_TYPE, dataMimeType); + } + mDataMimeType = dataMimeType; + + String dataContent = js.has(DataColumns.CONTENT) ? js.getString(DataColumns.CONTENT) : ""; + if (mIsCreate || !mDataContent.equals(dataContent)) { + mDiffDataValues.put(DataColumns.CONTENT, dataContent); + } + mDataContent = dataContent; + + long dataContentData1 = js.has(DataColumns.DATA1) ? js.getLong(DataColumns.DATA1) : 0; + if (mIsCreate || mDataContentData1 != dataContentData1) { + mDiffDataValues.put(DataColumns.DATA1, dataContentData1); + } + mDataContentData1 = dataContentData1; + + String dataContentData3 = js.has(DataColumns.DATA3) ? js.getString(DataColumns.DATA3) : ""; + if (mIsCreate || !mDataContentData3.equals(dataContentData3)) { + mDiffDataValues.put(DataColumns.DATA3, dataContentData3); + } + mDataContentData3 = dataContentData3; + } + + + /* + * 功能描述：获取共享的数据内容，并提供异常抛出与处理机制 + * 参数注解： + * Made By CuiCan + */ + public JSONObject getContent() throws JSONException { + if (mIsCreate) { + Log.e(TAG, "it seems that we haven't created this in database yet"); + return null; + } + //创建JSONObject对象。并将相关数据放入其中，并返回。 + JSONObject js = new JSONObject(); + js.put(DataColumns.ID, mDataId); + js.put(DataColumns.MIME_TYPE, mDataMimeType); + js.put(DataColumns.CONTENT, mDataContent); + js.put(DataColumns.DATA1, mDataContentData1); + js.put(DataColumns.DATA3, mDataContentData3); + return js; + } + + /* + * 功能描述：commit函数用于把当前造作所做的修改保存到数据库 + * 参数注解： + * Made By CuiCan + */ + public void commit(long noteId, boolean validateVersion, long version) { + + if (mIsCreate) { + if (mDataId == INVALID_ID && mDiffDataValues.containsKey(DataColumns.ID)) { + mDiffDataValues.remove(DataColumns.ID); + } + + mDiffDataValues.put(DataColumns.NOTE_ID, noteId); + Uri uri = mContentResolver.insert(Notes.CONTENT_DATA_URI, mDiffDataValues); + try { + mDataId = Long.valueOf(uri.getPathSegments().get(1)); + } catch (NumberFormatException e) { + Log.e(TAG, "Get note id error :" + e.toString()); + throw new ActionFailureException("create note failed"); + } + } else { + if (mDiffDataValues.size() > 0) { + int result = 0; + if (!validateVersion) { + result = mContentResolver.update(ContentUris.withAppendedId( + Notes.CONTENT_DATA_URI, mDataId), mDiffDataValues, null, null); + } else { + result = mContentResolver.update(ContentUris.withAppendedId( + Notes.CONTENT_DATA_URI, mDataId), mDiffDataValues, + " ? in (SELECT " + NoteColumns.ID + " FROM " + TABLE.NOTE + + " WHERE " + NoteColumns.VERSION + "=?)", new String[] { + String.valueOf(noteId), String.valueOf(version) + }); + } + if (result == 0) { + Log.w(TAG, "there is no update. maybe user updates note when syncing"); + } + } + } + + mDiffDataValues.clear(); + mIsCreate = false; + } + + /* + * 功能描述：获取当前id + * 实现过程： + * 参数注解： + * Made By CuiCan + */ + public long getId() { + return mDataId; + } +} \ No newline at end of file