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@ -16,7 +16,6 @@
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package net.micode.notes.data;
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package net.micode.notes.data;
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import android.app.SearchManager;
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import android.app.SearchManager;
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import android.content.ContentProvider;
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import android.content.ContentProvider;
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import android.content.ContentUris;
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import android.content.ContentUris;
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@ -34,23 +33,27 @@ import net.micode.notes.data.Notes.DataColumns;
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import net.micode.notes.data.Notes.NoteColumns;
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import net.micode.notes.data.Notes.NoteColumns;
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import net.micode.notes.data.NotesDatabaseHelper.TABLE;
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import net.micode.notes.data.NotesDatabaseHelper.TABLE;
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/**
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* NotesProvider是应用的内容提供者，负责管理笔记数据的访问接口。
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* 它处理对笔记和数据的CRUD操作，并支持搜索功能。
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*/
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public class NotesProvider extends ContentProvider {
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public class NotesProvider extends ContentProvider {
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// URI匹配器，用于解析不同的URI请求
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private static final UriMatcher mMatcher;
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private static final UriMatcher mMatcher;
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// 数据库助手类实例
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private NotesDatabaseHelper mHelper;
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private NotesDatabaseHelper mHelper;
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private static final String TAG = "NotesProvider";
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private static final String TAG = "NotesProvider";
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private static final int URI_NOTE = 1;
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// URI匹配码常量
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private static final int URI_NOTE_ITEM = 2;
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private static final int URI_NOTE = 1; // 匹配所有笔记
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private static final int URI_DATA = 3;
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private static final int URI_NOTE_ITEM = 2; // 匹配单个笔记
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private static final int URI_DATA_ITEM = 4;
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private static final int URI_DATA = 3; // 匹配所有数据
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private static final int URI_DATA_ITEM = 4; // 匹配单个数据
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private static final int URI_SEARCH = 5;
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private static final int URI_SEARCH = 5; // 匹配搜索请求
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private static final int URI_SEARCH_SUGGEST = 6;
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private static final int URI_SEARCH_SUGGEST = 6; // 匹配搜索建议请求
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static {
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static {
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// 初始化URI匹配器
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mMatcher = new UriMatcher(UriMatcher.NO_MATCH);
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mMatcher = new UriMatcher(UriMatcher.NO_MATCH);
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mMatcher.addURI(Notes.AUTHORITY, "note", URI_NOTE);
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mMatcher.addURI(Notes.AUTHORITY, "note", URI_NOTE);
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mMatcher.addURI(Notes.AUTHORITY, "note/#", URI_NOTE_ITEM);
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mMatcher.addURI(Notes.AUTHORITY, "note/#", URI_NOTE_ITEM);
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@ -62,8 +65,8 @@ public class NotesProvider extends ContentProvider {
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}
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}
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/**
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/**
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* x'0A' represents the '\n' character in sqlite. For title and content in the search result,
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* 笔记搜索的投影列定义，用于搜索结果的格式化显示
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* we will trim '\n' and white space in order to show more information.
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* 包含ID、搜索文本、图标和意图信息
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*/
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*/
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private static final String NOTES_SEARCH_PROJECTION = NoteColumns.ID + ","
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private static final String NOTES_SEARCH_PROJECTION = NoteColumns.ID + ","
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+ NoteColumns.ID + " AS " + SearchManager.SUGGEST_COLUMN_INTENT_EXTRA_DATA + ","
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+ NoteColumns.ID + " AS " + SearchManager.SUGGEST_COLUMN_INTENT_EXTRA_DATA + ","
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@ -73,18 +76,28 @@ public class NotesProvider extends ContentProvider {
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+ "'" + Intent.ACTION_VIEW + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_ACTION + ","
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+ "'" + Intent.ACTION_VIEW + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_ACTION + ","
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+ "'" + Notes.TextNote.CONTENT_TYPE + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_DATA;
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+ "'" + Notes.TextNote.CONTENT_TYPE + "' AS " + SearchManager.SUGGEST_COLUMN_INTENT_DATA;
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/**
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* 笔记搜索的SQL查询语句，用于在笔记摘要中搜索关键词
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* 排除回收站中的笔记，只搜索普通笔记类型
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*/
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private static String NOTES_SNIPPET_SEARCH_QUERY = "SELECT " + NOTES_SEARCH_PROJECTION
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private static String NOTES_SNIPPET_SEARCH_QUERY = "SELECT " + NOTES_SEARCH_PROJECTION
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+ " FROM " + TABLE.NOTE
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+ " FROM " + TABLE.NOTE
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+ " WHERE " + NoteColumns.SNIPPET + " LIKE ?"
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+ " WHERE " + NoteColumns.SNIPPET + " LIKE ?"
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+ " AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER
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+ " AND " + NoteColumns.PARENT_ID + "<>" + Notes.ID_TRASH_FOLER
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+ " AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE;
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+ " AND " + NoteColumns.TYPE + "=" + Notes.TYPE_NOTE;
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/**
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* 初始化内容提供者，获取数据库助手实例
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*/
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@Override
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@Override
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public boolean onCreate() {
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public boolean onCreate() {
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mHelper = NotesDatabaseHelper.getInstance(getContext());
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mHelper = NotesDatabaseHelper.getInstance(getContext());
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return true;
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return true;
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}
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}
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/**
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* 处理查询请求，根据不同的URI执行相应的数据库查询
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*/
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@Override
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@Override
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public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
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public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
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String sortOrder) {
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String sortOrder) {
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@ -93,25 +106,30 @@ public class NotesProvider extends ContentProvider {
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String id = null;
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String id = null;
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switch (mMatcher.match(uri)) {
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switch (mMatcher.match(uri)) {
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case URI_NOTE:
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case URI_NOTE:
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// 查询所有笔记
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c = db.query(TABLE.NOTE, projection, selection, selectionArgs, null, null,
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c = db.query(TABLE.NOTE, projection, selection, selectionArgs, null, null,
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sortOrder);
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sortOrder);
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break;
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break;
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case URI_NOTE_ITEM:
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case URI_NOTE_ITEM:
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// 查询单个笔记
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id = uri.getPathSegments().get(1);
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id = uri.getPathSegments().get(1);
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c = db.query(TABLE.NOTE, projection, NoteColumns.ID + "=" + id
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c = db.query(TABLE.NOTE, projection, NoteColumns.ID + "=" + id
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+ parseSelection(selection), selectionArgs, null, null, sortOrder);
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+ parseSelection(selection), selectionArgs, null, null, sortOrder);
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break;
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break;
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case URI_DATA:
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case URI_DATA:
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// 查询所有数据
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c = db.query(TABLE.DATA, projection, selection, selectionArgs, null, null,
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c = db.query(TABLE.DATA, projection, selection, selectionArgs, null, null,
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sortOrder);
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sortOrder);
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break;
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break;
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case URI_DATA_ITEM:
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case URI_DATA_ITEM:
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// 查询单个数据
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id = uri.getPathSegments().get(1);
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id = uri.getPathSegments().get(1);
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c = db.query(TABLE.DATA, projection, DataColumns.ID + "=" + id
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c = db.query(TABLE.DATA, projection, DataColumns.ID + "=" + id
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+ parseSelection(selection), selectionArgs, null, null, sortOrder);
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+ parseSelection(selection), selectionArgs, null, null, sortOrder);
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break;
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break;
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case URI_SEARCH:
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case URI_SEARCH:
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case URI_SEARCH_SUGGEST:
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case URI_SEARCH_SUGGEST:
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// 处理搜索和搜索建议请求
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if (sortOrder != null || projection != null) {
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if (sortOrder != null || projection != null) {
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throw new IllegalArgumentException(
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throw new IllegalArgumentException(
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"do not specify sortOrder, selection, selectionArgs, or projection" + "with this query");
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"do not specify sortOrder, selection, selectionArgs, or projection" + "with this query");
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@ -131,6 +149,7 @@ public class NotesProvider extends ContentProvider {
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}
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}
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try {
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try {
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// 执行模糊搜索
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searchString = String.format("%%%s%%", searchString);
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searchString = String.format("%%%s%%", searchString);
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c = db.rawQuery(NOTES_SNIPPET_SEARCH_QUERY,
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c = db.rawQuery(NOTES_SNIPPET_SEARCH_QUERY,
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new String[] { searchString });
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new String[] { searchString });
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@ -141,21 +160,27 @@ public class NotesProvider extends ContentProvider {
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default:
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default:
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throw new IllegalArgumentException("Unknown URI " + uri);
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throw new IllegalArgumentException("Unknown URI " + uri);
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}
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}
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// 设置内容观察者通知URI
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if (c != null) {
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if (c != null) {
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c.setNotificationUri(getContext().getContentResolver(), uri);
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c.setNotificationUri(getContext().getContentResolver(), uri);
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}
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}
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return c;
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return c;
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}
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}
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/**
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* 处理插入请求，根据不同的URI插入相应的数据
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*/
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@Override
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@Override
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public Uri insert(Uri uri, ContentValues values) {
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public Uri insert(Uri uri, ContentValues values) {
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SQLiteDatabase db = mHelper.getWritableDatabase();
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SQLiteDatabase db = mHelper.getWritableDatabase();
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long dataId = 0, noteId = 0, insertedId = 0;
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long dataId = 0, noteId = 0, insertedId = 0;
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switch (mMatcher.match(uri)) {
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switch (mMatcher.match(uri)) {
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case URI_NOTE:
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case URI_NOTE:
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// 插入笔记
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insertedId = noteId = db.insert(TABLE.NOTE, null, values);
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insertedId = noteId = db.insert(TABLE.NOTE, null, values);
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break;
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break;
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case URI_DATA:
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case URI_DATA:
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// 插入数据，需关联笔记ID
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if (values.containsKey(DataColumns.NOTE_ID)) {
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if (values.containsKey(DataColumns.NOTE_ID)) {
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noteId = values.getAsLong(DataColumns.NOTE_ID);
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noteId = values.getAsLong(DataColumns.NOTE_ID);
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} else {
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} else {
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@ -166,13 +191,12 @@ public class NotesProvider extends ContentProvider {
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default:
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default:
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throw new IllegalArgumentException("Unknown URI " + uri);
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throw new IllegalArgumentException("Unknown URI " + uri);
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}
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}
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// Notify the note uri
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// 通知数据变化
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if (noteId > 0) {
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if (noteId > 0) {
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getContext().getContentResolver().notifyChange(
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getContext().getContentResolver().notifyChange(
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ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), null);
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ContentUris.withAppendedId(Notes.CONTENT_NOTE_URI, noteId), null);
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}
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}
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// Notify the data uri
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if (dataId > 0) {
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if (dataId > 0) {
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getContext().getContentResolver().notifyChange(
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getContext().getContentResolver().notifyChange(
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ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId), null);
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ContentUris.withAppendedId(Notes.CONTENT_DATA_URI, dataId), null);
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@ -181,6 +205,9 @@ public class NotesProvider extends ContentProvider {
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return ContentUris.withAppendedId(uri, insertedId);
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return ContentUris.withAppendedId(uri, insertedId);
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}
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}
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/**
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* 处理删除请求，根据不同的URI删除相应的数据
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*/
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@Override
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@Override
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public int delete(Uri uri, String selection, String[] selectionArgs) {
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public int delete(Uri uri, String selection, String[] selectionArgs) {
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int count = 0;
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int count = 0;
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@ -189,15 +216,13 @@ public class NotesProvider extends ContentProvider {
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boolean deleteData = false;
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boolean deleteData = false;
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switch (mMatcher.match(uri)) {
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switch (mMatcher.match(uri)) {
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case URI_NOTE:
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case URI_NOTE:
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// 删除多个笔记，确保不删除系统文件夹
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selection = "(" + selection + ") AND " + NoteColumns.ID + ">0 ";
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selection = "(" + selection + ") AND " + NoteColumns.ID + ">0 ";
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count = db.delete(TABLE.NOTE, selection, selectionArgs);
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count = db.delete(TABLE.NOTE, selection, selectionArgs);
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break;
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break;
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case URI_NOTE_ITEM:
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case URI_NOTE_ITEM:
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// 删除单个笔记，不允许删除系统文件夹
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id = uri.getPathSegments().get(1);
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id = uri.getPathSegments().get(1);
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/**
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* ID that smaller than 0 is system folder which is not allowed to
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* trash
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*/
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long noteId = Long.valueOf(id);
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long noteId = Long.valueOf(id);
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if (noteId <= 0) {
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if (noteId <= 0) {
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break;
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break;
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@ -206,10 +231,12 @@ public class NotesProvider extends ContentProvider {
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NoteColumns.ID + "=" + id + parseSelection(selection), selectionArgs);
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NoteColumns.ID + "=" + id + parseSelection(selection), selectionArgs);
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break;
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break;
|
|
|
|
case URI_DATA:
|
|
|
|
case URI_DATA:
|
|
|
|
|
|
|
|
// 删除多个数据
|
|
|
|
count = db.delete(TABLE.DATA, selection, selectionArgs);
|
|
|
|
count = db.delete(TABLE.DATA, selection, selectionArgs);
|
|
|
|
deleteData = true;
|
|
|
|
deleteData = true;
|
|
|
|
break;
|
|
|
|
break;
|
|
|
|
case URI_DATA_ITEM:
|
|
|
|
case URI_DATA_ITEM:
|
|
|
|
|
|
|
|
// 删除单个数据
|
|
|
|
id = uri.getPathSegments().get(1);
|
|
|
|
id = uri.getPathSegments().get(1);
|
|
|
|
count = db.delete(TABLE.DATA,
|
|
|
|
count = db.delete(TABLE.DATA,
|
|
|
|
DataColumns.ID + "=" + id + parseSelection(selection), selectionArgs);
|
|
|
|
DataColumns.ID + "=" + id + parseSelection(selection), selectionArgs);
|
|
|
|
@ -218,6 +245,7 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
default:
|
|
|
|
default:
|
|
|
|
throw new IllegalArgumentException("Unknown URI " + uri);
|
|
|
|
throw new IllegalArgumentException("Unknown URI " + uri);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// 通知数据变化
|
|
|
|
if (count > 0) {
|
|
|
|
if (count > 0) {
|
|
|
|
if (deleteData) {
|
|
|
|
if (deleteData) {
|
|
|
|
getContext().getContentResolver().notifyChange(Notes.CONTENT_NOTE_URI, null);
|
|
|
|
getContext().getContentResolver().notifyChange(Notes.CONTENT_NOTE_URI, null);
|
|
|
|
@ -227,6 +255,9 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
return count;
|
|
|
|
return count;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
|
|
* 处理更新请求，根据不同的URI更新相应的数据
|
|
|
|
|
|
|
|
*/
|
|
|
|
@Override
|
|
|
|
@Override
|
|
|
|
public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
|
|
|
|
public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
|
|
|
|
int count = 0;
|
|
|
|
int count = 0;
|
|
|
|
@ -235,20 +266,24 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
boolean updateData = false;
|
|
|
|
boolean updateData = false;
|
|
|
|
switch (mMatcher.match(uri)) {
|
|
|
|
switch (mMatcher.match(uri)) {
|
|
|
|
case URI_NOTE:
|
|
|
|
case URI_NOTE:
|
|
|
|
|
|
|
|
// 更新多个笔记，并增加版本号
|
|
|
|
increaseNoteVersion(-1, selection, selectionArgs);
|
|
|
|
increaseNoteVersion(-1, selection, selectionArgs);
|
|
|
|
count = db.update(TABLE.NOTE, values, selection, selectionArgs);
|
|
|
|
count = db.update(TABLE.NOTE, values, selection, selectionArgs);
|
|
|
|
break;
|
|
|
|
break;
|
|
|
|
case URI_NOTE_ITEM:
|
|
|
|
case URI_NOTE_ITEM:
|
|
|
|
|
|
|
|
// 更新单个笔记，并增加版本号
|
|
|
|
id = uri.getPathSegments().get(1);
|
|
|
|
id = uri.getPathSegments().get(1);
|
|
|
|
increaseNoteVersion(Long.valueOf(id), selection, selectionArgs);
|
|
|
|
increaseNoteVersion(Long.valueOf(id), selection, selectionArgs);
|
|
|
|
count = db.update(TABLE.NOTE, values, NoteColumns.ID + "=" + id
|
|
|
|
count = db.update(TABLE.NOTE, values, NoteColumns.ID + "=" + id
|
|
|
|
+ parseSelection(selection), selectionArgs);
|
|
|
|
+ parseSelection(selection), selectionArgs);
|
|
|
|
break;
|
|
|
|
break;
|
|
|
|
case URI_DATA:
|
|
|
|
case URI_DATA:
|
|
|
|
|
|
|
|
// 更新多个数据
|
|
|
|
count = db.update(TABLE.DATA, values, selection, selectionArgs);
|
|
|
|
count = db.update(TABLE.DATA, values, selection, selectionArgs);
|
|
|
|
updateData = true;
|
|
|
|
updateData = true;
|
|
|
|
break;
|
|
|
|
break;
|
|
|
|
case URI_DATA_ITEM:
|
|
|
|
case URI_DATA_ITEM:
|
|
|
|
|
|
|
|
// 更新单个数据
|
|
|
|
id = uri.getPathSegments().get(1);
|
|
|
|
id = uri.getPathSegments().get(1);
|
|
|
|
count = db.update(TABLE.DATA, values, DataColumns.ID + "=" + id
|
|
|
|
count = db.update(TABLE.DATA, values, DataColumns.ID + "=" + id
|
|
|
|
+ parseSelection(selection), selectionArgs);
|
|
|
|
+ parseSelection(selection), selectionArgs);
|
|
|
|
@ -258,6 +293,7 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
throw new IllegalArgumentException("Unknown URI " + uri);
|
|
|
|
throw new IllegalArgumentException("Unknown URI " + uri);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// 通知数据变化
|
|
|
|
if (count > 0) {
|
|
|
|
if (count > 0) {
|
|
|
|
if (updateData) {
|
|
|
|
if (updateData) {
|
|
|
|
getContext().getContentResolver().notifyChange(Notes.CONTENT_NOTE_URI, null);
|
|
|
|
getContext().getContentResolver().notifyChange(Notes.CONTENT_NOTE_URI, null);
|
|
|
|
@ -267,10 +303,16 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
return count;
|
|
|
|
return count;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
|
|
* 解析SQL选择条件，添加额外的AND条件
|
|
|
|
|
|
|
|
*/
|
|
|
|
private String parseSelection(String selection) {
|
|
|
|
private String parseSelection(String selection) {
|
|
|
|
return (!TextUtils.isEmpty(selection) ? " AND (" + selection + ')' : "");
|
|
|
|
return (!TextUtils.isEmpty(selection) ? " AND (" + selection + ')' : "");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
|
|
* 增加笔记的版本号，用于同步和冲突检测
|
|
|
|
|
|
|
|
*/
|
|
|
|
private void increaseNoteVersion(long id, String selection, String[] selectionArgs) {
|
|
|
|
private void increaseNoteVersion(long id, String selection, String[] selectionArgs) {
|
|
|
|
StringBuilder sql = new StringBuilder(120);
|
|
|
|
StringBuilder sql = new StringBuilder(120);
|
|
|
|
sql.append("UPDATE ");
|
|
|
|
sql.append("UPDATE ");
|
|
|
|
@ -279,6 +321,7 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
sql.append(NoteColumns.VERSION);
|
|
|
|
sql.append(NoteColumns.VERSION);
|
|
|
|
sql.append("=" + NoteColumns.VERSION + "+1 ");
|
|
|
|
sql.append("=" + NoteColumns.VERSION + "+1 ");
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// 构建WHERE子句
|
|
|
|
if (id > 0 || !TextUtils.isEmpty(selection)) {
|
|
|
|
if (id > 0 || !TextUtils.isEmpty(selection)) {
|
|
|
|
sql.append(" WHERE ");
|
|
|
|
sql.append(" WHERE ");
|
|
|
|
}
|
|
|
|
}
|
|
|
|
@ -293,13 +336,16 @@ public class NotesProvider extends ContentProvider {
|
|
|
|
sql.append(selectString);
|
|
|
|
sql.append(selectString);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
// 执行SQL语句
|
|
|
|
mHelper.getWritableDatabase().execSQL(sql.toString());
|
|
|
|
mHelper.getWritableDatabase().execSQL(sql.toString());
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
|
|
|
* 返回URI对应的MIME类型，此处未实现
|
|
|
|
|
|
|
|
*/
|
|
|
|
@Override
|
|
|
|
@Override
|
|
|
|
public String getType(Uri uri) {
|
|
|
|
public String getType(Uri uri) {
|
|
|
|
// TODO Auto-generated method stub
|
|
|
|
// TODO Auto-generated method stub
|
|
|
|
return null;
|
|
|
|
return null;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
}
|
