/* * 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.gtask.data; import android.content.ContentResolver; import android.content.ContentUris; import android.content.ContentValues; import android.content.Context; import android.database.Cursor; import android.net.Uri; import android.util.Log; import net.micode.notes.data.Notes; import net.micode.notes.data.Notes.DataColumns; import net.micode.notes.data.Notes.DataConstants; import net.micode.notes.data.Notes.NoteColumns; import net.micode.notes.data.NotesDatabaseHelper.TABLE; import net.micode.notes.gtask.exception.ActionFailureException; import org.json.JSONException; import org.json.JSONObject; // 定义一个SqlData类 public class SqlData { private static final String TAG = SqlData.class.getSimpleName(); private static final int INVALID_ID = -99999; public static final String[] PROJECTION_DATA = new String[] { DataColumns.ID, DataColumns.MIME_TYPE, DataColumns.CONTENT, DataColumns.DATA1, DataColumns.DATA3 }; public static final int DATA_ID_COLUMN = 0; // 数据类型 public static final int DATA_MIME_TYPE_COLUMN = 1; // 数据内容 public static final int DATA_CONTENT_COLUMN = 2; // 数据内容1 public static final int DATA_CONTENT_DATA_1_COLUMN = 3; // 数据内容3 public static final int DATA_CONTENT_DATA_3_COLUMN = 4; // 内容解析器 private ContentResolver mContentResolver; // 是否创建 private boolean mIsCreate; // 数据ID private long mDataId; // 数据类型 private String mDataMimeType; // 数据内容 private String mDataContent; private long mDataContentData1; // 数据内容 private String mDataContentData3; // 差值数据 private ContentValues mDiffDataValues; public SqlData(Context context) { //获取内容解析器 mContentResolver = context.getContentResolver(); //标识是否创建 mIsCreate = true; //数据ID mDataId = INVALID_ID; //数据类型 mDataMimeType = DataConstants.NOTE; //数据内容 mDataContent = ""; //数据内容数据1 mDataContentData1 = 0; //数据内容数据3 mDataContentData3 = ""; //差异数据值 mDiffDataValues = new ContentValues(); } public SqlData(Context context, Cursor c) { //获取内容解析器 mContentResolver = context.getContentResolver(); //标识是否创建 mIsCreate = false; //从游标中加载数据 loadFromCursor(c); //差异数据值 mDiffDataValues = new ContentValues(); } private void loadFromCursor(Cursor c) { // 从游标中加载数据 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); } public void setContent(JSONObject js) throws JSONException { // 从JSONObject中设置数据 long dataId = js.has(DataColumns.ID) ? js.getLong(DataColumns.ID) : INVALID_ID; if (mIsCreate || mDataId != dataId) { mDiffDataValues.put(DataColumns.ID, dataId); } mDataId = dataId; // private void initDataMimeType(JSONObject js) { // // 从JSONObject中获取MIME_TYPE String dataMimeType = js.has(DataColumns.MIME_TYPE) ? js.getString(DataColumns.MIME_TYPE) : DataConstants.NOTE; // // 如果mIsCreate为true或者mDataMimeType不等于dataMimeType if (mIsCreate || !mDataMimeType.equals(dataMimeType)) { // // 将dataMimeType放入mDiffDataValues中 mDiffDataValues.put(DataColumns.MIME_TYPE, dataMimeType); } // // 将dataMimeType赋值给mDataMimeType mDataMimeType = dataMimeType; // 获取js中的内容 String dataContent = js.has(DataColumns.CONTENT) ? js.getString(DataColumns.CONTENT) : ""; // 判断是否创建或者内容是否改变 if (mIsCreate || !mDataContent.equals(dataContent)) { // 将内容添加到不同的数据值中 mDiffDataValues.put(DataColumns.CONTENT, dataContent); } // 更新数据内容 mDataContent = dataContent; // 获取dataContent的data1 long dataContentData1 = js.has(DataColumns.DATA1) ? js.getLong(DataColumns.DATA1) : 0; // 如果mIsCreate为true或者dataContentData1不等于mDataContentData1，则将dataContentData1放入mDiffDataValues中 if (mIsCreate || mDataContentData1 != dataContentData1) { mDiffDataValues.put(DataColumns.DATA1, dataContentData1); } // 将dataContentData1赋值给mDataContentData1 mDataContentData1 = dataContentData1; // 获取dataContent的data3 String dataContentData3 = js.has(DataColumns.DATA3) ? js.getString(DataColumns.DATA3) : ""; // 如果mIsCreate为true或者dataContentData3不等于mDataContentData3，则将dataContentData3放入mDiffDataValues中 if (mIsCreate || !mDataContentData3.equals(dataContentData3)) { mDiffDataValues.put(DataColumns.DATA3, dataContentData3); } // 将dataContentData3赋值给mDataContentData3 mDataContentData3 = dataContentData3; } //获取内容 //获取内容 public JSONObject getContent() throws JSONException { //判断是否创建 if (mIsCreate) { Log.e(TAG, "it seems that we haven't created this in database yet"); return null; } //创建JSONObject JSONObject js = new JSONObject(); //添加ID js.put(DataColumns.ID, mDataId); //添加MIME_TYPE js.put(DataColumns.MIME_TYPE, mDataMimeType); //添加CONTENT js.put(DataColumns.CONTENT, mDataContent); //添加DATA1 js.put(DataColumns.DATA1, mDataContentData1); //添加DATA3 js.put(DataColumns.DATA3, mDataContentData3); //返回JSONObject return js; } public void commit(long noteId, boolean validateVersion, long version) { // 判断是否是创建操作 if (mIsCreate) { // 如果数据ID为无效ID，并且数据值中包含ID if (mDataId == INVALID_ID && mDiffDataValues.containsKey(DataColumns.ID)) { // 移除ID mDiffDataValues.remove(DataColumns.ID); } // 添加noteId mDiffDataValues.put(DataColumns.NOTE_ID, noteId); // 插入数据 Uri uri = mContentResolver.insert(Notes.CONTENT_DATA_URI, mDiffDataValues); try { // 获取插入数据的ID 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 { // 更新数据 if (mDiffDataValues.size() > 0) { int result = 0; if (!validateVersion) { // 更新数据 result = mContentResolver.update(ContentUris.withAppendedId( Notes.CONTENT_DATA_URI, mDataId), mDiffDataValues, null, null); } else { // 更新数据，并且检查版本号 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; } public long getId() { return mDataId; } }