| /* |
| * Copyright (C) 2013 The Android Open Source Project |
| * |
| * 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 com.android.documentsui; |
| |
| import android.content.ContentProvider; |
| import android.content.ContentResolver; |
| import android.content.ContentValues; |
| import android.content.Context; |
| import android.content.UriMatcher; |
| import android.database.Cursor; |
| import android.database.sqlite.SQLiteDatabase; |
| import android.database.sqlite.SQLiteOpenHelper; |
| import android.net.Uri; |
| import android.provider.DocumentsContract.Document; |
| import android.provider.DocumentsContract.Root; |
| import android.text.format.DateUtils; |
| import android.util.Log; |
| |
| public class RecentsProvider extends ContentProvider { |
| private static final String TAG = "RecentsProvider"; |
| |
| public static final long MAX_HISTORY_IN_MILLIS = DateUtils.DAY_IN_MILLIS * 45; |
| |
| private static final String AUTHORITY = "com.android.documentsui.recents"; |
| |
| private static final UriMatcher sMatcher = new UriMatcher(UriMatcher.NO_MATCH); |
| |
| private static final int URI_RECENT = 1; |
| private static final int URI_STATE = 2; |
| private static final int URI_RESUME = 3; |
| |
| static { |
| sMatcher.addURI(AUTHORITY, "recent", URI_RECENT); |
| // state/authority/rootId/docId |
| sMatcher.addURI(AUTHORITY, "state/*/*/*", URI_STATE); |
| // resume/packageName |
| sMatcher.addURI(AUTHORITY, "resume/*", URI_RESUME); |
| } |
| |
| public static final String TABLE_RECENT = "recent"; |
| public static final String TABLE_STATE = "state"; |
| public static final String TABLE_RESUME = "resume"; |
| |
| public static class RecentColumns { |
| public static final String STACK = "stack"; |
| public static final String TIMESTAMP = "timestamp"; |
| } |
| |
| public static class StateColumns { |
| public static final String AUTHORITY = "authority"; |
| public static final String ROOT_ID = Root.COLUMN_ROOT_ID; |
| public static final String DOCUMENT_ID = Document.COLUMN_DOCUMENT_ID; |
| public static final String MODE = "mode"; |
| public static final String SORT_ORDER = "sortOrder"; |
| } |
| |
| public static class ResumeColumns { |
| public static final String PACKAGE_NAME = "package_name"; |
| public static final String STACK = "stack"; |
| public static final String TIMESTAMP = "timestamp"; |
| } |
| |
| public static Uri buildRecent() { |
| return new Uri.Builder().scheme(ContentResolver.SCHEME_CONTENT) |
| .authority(AUTHORITY).appendPath("recent").build(); |
| } |
| |
| public static Uri buildState(String authority, String rootId, String documentId) { |
| return new Uri.Builder().scheme(ContentResolver.SCHEME_CONTENT).authority(AUTHORITY) |
| .appendPath("state").appendPath(authority).appendPath(rootId).appendPath(documentId) |
| .build(); |
| } |
| |
| public static Uri buildResume(String packageName) { |
| return new Uri.Builder().scheme(ContentResolver.SCHEME_CONTENT) |
| .authority(AUTHORITY).appendPath("resume").appendPath(packageName).build(); |
| } |
| |
| private DatabaseHelper mHelper; |
| |
| private static class DatabaseHelper extends SQLiteOpenHelper { |
| private static final String DB_NAME = "recents.db"; |
| |
| private static final int VERSION_INIT = 1; |
| private static final int VERSION_AS_BLOB = 3; |
| |
| public DatabaseHelper(Context context) { |
| super(context, DB_NAME, null, VERSION_AS_BLOB); |
| } |
| |
| @Override |
| public void onCreate(SQLiteDatabase db) { |
| |
| db.execSQL("CREATE TABLE " + TABLE_RECENT + " (" + |
| RecentColumns.STACK + " BLOB PRIMARY KEY ON CONFLICT REPLACE," + |
| RecentColumns.TIMESTAMP + " INTEGER" + |
| ")"); |
| |
| db.execSQL("CREATE TABLE " + TABLE_STATE + " (" + |
| StateColumns.AUTHORITY + " TEXT," + |
| StateColumns.ROOT_ID + " TEXT," + |
| StateColumns.DOCUMENT_ID + " TEXT," + |
| StateColumns.MODE + " INTEGER," + |
| StateColumns.SORT_ORDER + " INTEGER," + |
| "PRIMARY KEY (" + StateColumns.AUTHORITY + ", " + StateColumns.ROOT_ID + ", " |
| + StateColumns.DOCUMENT_ID + ")" + |
| ")"); |
| |
| db.execSQL("CREATE TABLE " + TABLE_RESUME + " (" + |
| ResumeColumns.PACKAGE_NAME + " TEXT PRIMARY KEY ON CONFLICT REPLACE," + |
| ResumeColumns.STACK + " BLOB," + |
| ResumeColumns.TIMESTAMP + " INTEGER" + |
| ")"); |
| } |
| |
| @Override |
| public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { |
| Log.w(TAG, "Upgrading database; wiping app data"); |
| db.execSQL("DROP TABLE IF EXISTS " + TABLE_RECENT); |
| db.execSQL("DROP TABLE IF EXISTS " + TABLE_STATE); |
| db.execSQL("DROP TABLE IF EXISTS " + TABLE_RESUME); |
| onCreate(db); |
| } |
| } |
| |
| @Override |
| public boolean onCreate() { |
| mHelper = new DatabaseHelper(getContext()); |
| return true; |
| } |
| |
| @Override |
| public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, |
| String sortOrder) { |
| final SQLiteDatabase db = mHelper.getReadableDatabase(); |
| switch (sMatcher.match(uri)) { |
| case URI_RECENT: |
| final long cutoff = System.currentTimeMillis() - MAX_HISTORY_IN_MILLIS; |
| return db.query(TABLE_RECENT, projection, RecentColumns.TIMESTAMP + ">" + cutoff, |
| null, null, null, null); |
| case URI_STATE: |
| final String authority = uri.getPathSegments().get(1); |
| final String rootId = uri.getPathSegments().get(2); |
| final String documentId = uri.getPathSegments().get(3); |
| return db.query(TABLE_STATE, projection, StateColumns.AUTHORITY + "=? AND " |
| + StateColumns.ROOT_ID + "=? AND " + StateColumns.DOCUMENT_ID + "=?", |
| new String[] { authority, rootId, documentId }, null, null, null); |
| case URI_RESUME: |
| final String packageName = uri.getPathSegments().get(1); |
| return db.query(TABLE_RESUME, projection, ResumeColumns.PACKAGE_NAME + "=?", |
| new String[] { packageName }, null, null, null); |
| default: |
| throw new UnsupportedOperationException("Unsupported Uri " + uri); |
| } |
| } |
| |
| @Override |
| public String getType(Uri uri) { |
| return null; |
| } |
| |
| @Override |
| public Uri insert(Uri uri, ContentValues values) { |
| final SQLiteDatabase db = mHelper.getWritableDatabase(); |
| switch (sMatcher.match(uri)) { |
| case URI_RECENT: |
| values.put(RecentColumns.TIMESTAMP, System.currentTimeMillis()); |
| db.insert(TABLE_RECENT, null, values); |
| final long cutoff = System.currentTimeMillis() - MAX_HISTORY_IN_MILLIS; |
| db.delete(TABLE_RECENT, RecentColumns.TIMESTAMP + "<" + cutoff, null); |
| return uri; |
| case URI_STATE: |
| final String authority = uri.getPathSegments().get(1); |
| final String rootId = uri.getPathSegments().get(2); |
| final String documentId = uri.getPathSegments().get(3); |
| |
| final ContentValues key = new ContentValues(); |
| key.put(StateColumns.AUTHORITY, authority); |
| key.put(StateColumns.ROOT_ID, rootId); |
| key.put(StateColumns.DOCUMENT_ID, documentId); |
| |
| // Ensure that row exists, then update with changed values |
| db.insertWithOnConflict(TABLE_STATE, null, key, SQLiteDatabase.CONFLICT_IGNORE); |
| db.update(TABLE_STATE, values, StateColumns.AUTHORITY + "=? AND " |
| + StateColumns.ROOT_ID + "=? AND " + StateColumns.DOCUMENT_ID + "=?", |
| new String[] { authority, rootId, documentId }); |
| |
| return uri; |
| case URI_RESUME: |
| final String packageName = uri.getPathSegments().get(1); |
| values.put(ResumeColumns.PACKAGE_NAME, packageName); |
| values.put(ResumeColumns.TIMESTAMP, System.currentTimeMillis()); |
| db.insert(TABLE_RESUME, null, values); |
| return uri; |
| default: |
| throw new UnsupportedOperationException("Unsupported Uri " + uri); |
| } |
| } |
| |
| @Override |
| public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) { |
| throw new UnsupportedOperationException("Unsupported Uri " + uri); |
| } |
| |
| @Override |
| public int delete(Uri uri, String selection, String[] selectionArgs) { |
| throw new UnsupportedOperationException("Unsupported Uri " + uri); |
| } |
| } |