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Diffstat (limited to 'src/com/android/photos/data/PhotoProvider.java')
| -rw-r--r-- | src/com/android/photos/data/PhotoProvider.java | 536 |
1 files changed, 0 insertions, 536 deletions
diff --git a/src/com/android/photos/data/PhotoProvider.java b/src/com/android/photos/data/PhotoProvider.java deleted file mode 100644 index d4310ca95..000000000 --- a/src/com/android/photos/data/PhotoProvider.java +++ /dev/null @@ -1,536 +0,0 @@ -/* - * 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.photos.data; - -import android.content.ContentResolver; -import android.content.ContentUris; -import android.content.ContentValues; -import android.content.Context; -import android.content.UriMatcher; -import android.database.Cursor; -import android.database.DatabaseUtils; -import android.database.sqlite.SQLiteDatabase; -import android.database.sqlite.SQLiteOpenHelper; -import android.database.sqlite.SQLiteQueryBuilder; -import android.media.ExifInterface; -import android.net.Uri; -import android.os.CancellationSignal; -import android.provider.BaseColumns; - -import com.android.gallery3d.common.ApiHelper; - -import java.util.List; - -/** - * A provider that gives access to photo and video information for media stored - * on the server. Only media that is or will be put on the server will be - * accessed by this provider. Use Photos.CONTENT_URI to query all photos and - * videos. Use Albums.CONTENT_URI to query all albums. Use Metadata.CONTENT_URI - * to query metadata about a photo or video, based on the ID of the media. Use - * ImageCache.THUMBNAIL_CONTENT_URI, ImageCache.PREVIEW_CONTENT_URI, or - * ImageCache.ORIGINAL_CONTENT_URI to query the path of the thumbnail, preview, - * or original-sized image respectfully. <br/> - * To add or update metadata, use the update function rather than insert. All - * values for the metadata must be in the ContentValues, even if they are also - * in the selection. The selection and selectionArgs are not used when updating - * metadata. If the metadata values are null, the row will be deleted. - */ -public class PhotoProvider extends SQLiteContentProvider { - @SuppressWarnings("unused") - private static final String TAG = PhotoProvider.class.getSimpleName(); - - protected static final String DB_NAME = "photo.db"; - public static final String AUTHORITY = PhotoProviderAuthority.AUTHORITY; - static final Uri BASE_CONTENT_URI = new Uri.Builder().scheme("content").authority(AUTHORITY) - .build(); - - // Used to allow mocking out the change notification because - // MockContextResolver disallows system-wide notification. - public static interface ChangeNotification { - void notifyChange(Uri uri, boolean syncToNetwork); - } - - /** - * Contains columns that can be accessed via Accounts.CONTENT_URI - */ - public static interface Accounts extends BaseColumns { - /** - * Internal database table used for account information - */ - public static final String TABLE = "accounts"; - /** - * Content URI for account information - */ - public static final Uri CONTENT_URI = Uri.withAppendedPath(BASE_CONTENT_URI, TABLE); - /** - * User name for this account. - */ - public static final String ACCOUNT_NAME = "name"; - } - - /** - * Contains columns that can be accessed via Photos.CONTENT_URI. - */ - public static interface Photos extends BaseColumns { - /** - * The image_type query parameter required for requesting a specific - * size of image. - */ - public static final String MEDIA_SIZE_QUERY_PARAMETER = "media_size"; - - /** Internal database table used for basic photo information. */ - public static final String TABLE = "photos"; - /** Content URI for basic photo and video information. */ - public static final Uri CONTENT_URI = Uri.withAppendedPath(BASE_CONTENT_URI, TABLE); - - /** Long foreign key to Accounts._ID */ - public static final String ACCOUNT_ID = "account_id"; - /** Column name for the width of the original image. Integer value. */ - public static final String WIDTH = "width"; - /** Column name for the height of the original image. Integer value. */ - public static final String HEIGHT = "height"; - /** - * Column name for the date that the original image was taken. Long - * value indicating the milliseconds since epoch in the GMT time zone. - */ - public static final String DATE_TAKEN = "date_taken"; - /** - * Column name indicating the long value of the album id that this image - * resides in. Will be NULL if it it has not been uploaded to the - * server. - */ - public static final String ALBUM_ID = "album_id"; - /** The column name for the mime-type String. */ - public static final String MIME_TYPE = "mime_type"; - /** The title of the photo. String value. */ - public static final String TITLE = "title"; - /** The date the photo entry was last updated. Long value. */ - public static final String DATE_MODIFIED = "date_modified"; - /** - * The rotation of the photo in degrees, if rotation has not already - * been applied. Integer value. - */ - public static final String ROTATION = "rotation"; - } - - /** - * Contains columns and Uri for accessing album information. - */ - public static interface Albums extends BaseColumns { - /** Internal database table used album information. */ - public static final String TABLE = "albums"; - /** Content URI for album information. */ - public static final Uri CONTENT_URI = Uri.withAppendedPath(BASE_CONTENT_URI, TABLE); - - /** Long foreign key to Accounts._ID */ - public static final String ACCOUNT_ID = "account_id"; - /** Parent directory or null if this is in the root. */ - public static final String PARENT_ID = "parent_id"; - /** The type of album. Non-null, if album is auto-generated. String value. */ - public static final String ALBUM_TYPE = "album_type"; - /** - * Column name for the visibility level of the album. Can be any of the - * VISIBILITY_* values. - */ - public static final String VISIBILITY = "visibility"; - /** The user-specified location associated with the album. String value. */ - public static final String LOCATION_STRING = "location_string"; - /** The title of the album. String value. */ - public static final String TITLE = "title"; - /** A short summary of the contents of the album. String value. */ - public static final String SUMMARY = "summary"; - /** The date the album was created. Long value */ - public static final String DATE_PUBLISHED = "date_published"; - /** The date the album entry was last updated. Long value. */ - public static final String DATE_MODIFIED = "date_modified"; - - // Privacy values for Albums.VISIBILITY - public static final int VISIBILITY_PRIVATE = 1; - public static final int VISIBILITY_SHARED = 2; - public static final int VISIBILITY_PUBLIC = 3; - } - - /** - * Contains columns and Uri for accessing photo and video metadata - */ - public static interface Metadata extends BaseColumns { - /** Internal database table used metadata information. */ - public static final String TABLE = "metadata"; - /** Content URI for photo and video metadata. */ - public static final Uri CONTENT_URI = Uri.withAppendedPath(BASE_CONTENT_URI, TABLE); - /** Foreign key to photo_id. Long value. */ - public static final String PHOTO_ID = "photo_id"; - /** Metadata key. String value */ - public static final String KEY = "key"; - /** - * Metadata value. Type is based on key. - */ - public static final String VALUE = "value"; - - /** A short summary of the photo. String value. */ - public static final String KEY_SUMMARY = "summary"; - /** The date the photo was added. Long value. */ - public static final String KEY_PUBLISHED = "date_published"; - /** The date the photo was last updated. Long value. */ - public static final String KEY_DATE_UPDATED = "date_updated"; - /** The size of the photo is bytes. Integer value. */ - public static final String KEY_SIZE_IN_BTYES = "size"; - /** The latitude associated with the photo. Double value. */ - public static final String KEY_LATITUDE = "latitude"; - /** The longitude associated with the photo. Double value. */ - public static final String KEY_LONGITUDE = "longitude"; - - /** The make of the camera used. String value. */ - public static final String KEY_EXIF_MAKE = ExifInterface.TAG_MAKE; - /** The model of the camera used. String value. */ - public static final String KEY_EXIF_MODEL = ExifInterface.TAG_MODEL;; - /** The exposure time used. Float value. */ - public static final String KEY_EXIF_EXPOSURE = ExifInterface.TAG_EXPOSURE_TIME; - /** Whether the flash was used. Boolean value. */ - public static final String KEY_EXIF_FLASH = ExifInterface.TAG_FLASH; - /** The focal length used. Float value. */ - public static final String KEY_EXIF_FOCAL_LENGTH = ExifInterface.TAG_FOCAL_LENGTH; - /** The fstop value used. Float value. */ - public static final String KEY_EXIF_FSTOP = ExifInterface.TAG_APERTURE; - /** The ISO equivalent value used. Integer value. */ - public static final String KEY_EXIF_ISO = ExifInterface.TAG_ISO; - } - - // SQL used within this class. - protected static final String WHERE_ID = BaseColumns._ID + " = ?"; - protected static final String WHERE_METADATA_ID = Metadata.PHOTO_ID + " = ? AND " - + Metadata.KEY + " = ?"; - - protected static final String SELECT_ALBUM_ID = "SELECT " + Albums._ID + " FROM " - + Albums.TABLE; - protected static final String SELECT_PHOTO_ID = "SELECT " + Photos._ID + " FROM " - + Photos.TABLE; - protected static final String SELECT_PHOTO_COUNT = "SELECT COUNT(*) FROM " + Photos.TABLE; - protected static final String DELETE_PHOTOS = "DELETE FROM " + Photos.TABLE; - protected static final String DELETE_METADATA = "DELETE FROM " + Metadata.TABLE; - protected static final String SELECT_METADATA_COUNT = "SELECT COUNT(*) FROM " + Metadata.TABLE; - protected static final String WHERE = " WHERE "; - protected static final String IN = " IN "; - protected static final String NESTED_SELECT_START = "("; - protected static final String NESTED_SELECT_END = ")"; - protected static final String[] PROJECTION_COUNT = { - "COUNT(*)" - }; - - /** - * For selecting the mime-type for an image. - */ - private static final String[] PROJECTION_MIME_TYPE = { - Photos.MIME_TYPE, - }; - - protected static final String[] BASE_COLUMNS_ID = { - BaseColumns._ID, - }; - - protected ChangeNotification mNotifier = null; - protected static final UriMatcher sUriMatcher = new UriMatcher(UriMatcher.NO_MATCH); - - protected static final int MATCH_PHOTO = 1; - protected static final int MATCH_PHOTO_ID = 2; - protected static final int MATCH_ALBUM = 3; - protected static final int MATCH_ALBUM_ID = 4; - protected static final int MATCH_METADATA = 5; - protected static final int MATCH_METADATA_ID = 6; - protected static final int MATCH_ACCOUNT = 7; - protected static final int MATCH_ACCOUNT_ID = 8; - - static { - sUriMatcher.addURI(AUTHORITY, Photos.TABLE, MATCH_PHOTO); - // match against Photos._ID - sUriMatcher.addURI(AUTHORITY, Photos.TABLE + "/#", MATCH_PHOTO_ID); - sUriMatcher.addURI(AUTHORITY, Albums.TABLE, MATCH_ALBUM); - // match against Albums._ID - sUriMatcher.addURI(AUTHORITY, Albums.TABLE + "/#", MATCH_ALBUM_ID); - sUriMatcher.addURI(AUTHORITY, Metadata.TABLE, MATCH_METADATA); - // match against metadata/<Metadata._ID> - sUriMatcher.addURI(AUTHORITY, Metadata.TABLE + "/#", MATCH_METADATA_ID); - sUriMatcher.addURI(AUTHORITY, Accounts.TABLE, MATCH_ACCOUNT); - // match against Accounts._ID - sUriMatcher.addURI(AUTHORITY, Accounts.TABLE + "/#", MATCH_ACCOUNT_ID); - } - - @Override - public int deleteInTransaction(Uri uri, String selection, String[] selectionArgs, - boolean callerIsSyncAdapter) { - int match = matchUri(uri); - selection = addIdToSelection(match, selection); - selectionArgs = addIdToSelectionArgs(match, uri, selectionArgs); - return deleteCascade(uri, match, selection, selectionArgs); - } - - @Override - public String getType(Uri uri) { - Cursor cursor = query(uri, PROJECTION_MIME_TYPE, null, null, null); - String mimeType = null; - if (cursor.moveToNext()) { - mimeType = cursor.getString(0); - } - cursor.close(); - return mimeType; - } - - @Override - public Uri insertInTransaction(Uri uri, ContentValues values, boolean callerIsSyncAdapter) { - int match = matchUri(uri); - validateMatchTable(match); - String table = getTableFromMatch(match, uri); - SQLiteDatabase db = getDatabaseHelper().getWritableDatabase(); - Uri insertedUri = null; - long id = db.insert(table, null, values); - if (id != -1) { - // uri already matches the table. - insertedUri = ContentUris.withAppendedId(uri, id); - postNotifyUri(insertedUri); - } - return insertedUri; - } - - @Override - public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, - String sortOrder) { - return query(uri, projection, selection, selectionArgs, sortOrder, null); - } - - @Override - public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, - String sortOrder, CancellationSignal cancellationSignal) { - projection = replaceCount(projection); - int match = matchUri(uri); - selection = addIdToSelection(match, selection); - selectionArgs = addIdToSelectionArgs(match, uri, selectionArgs); - String table = getTableFromMatch(match, uri); - Cursor c = query(table, projection, selection, selectionArgs, sortOrder, cancellationSignal); - if (c != null) { - c.setNotificationUri(getContext().getContentResolver(), uri); - } - return c; - } - - @Override - public int updateInTransaction(Uri uri, ContentValues values, String selection, - String[] selectionArgs, boolean callerIsSyncAdapter) { - int match = matchUri(uri); - int rowsUpdated = 0; - SQLiteDatabase db = getDatabaseHelper().getWritableDatabase(); - if (match == MATCH_METADATA) { - rowsUpdated = modifyMetadata(db, values); - } else { - selection = addIdToSelection(match, selection); - selectionArgs = addIdToSelectionArgs(match, uri, selectionArgs); - String table = getTableFromMatch(match, uri); - rowsUpdated = db.update(table, values, selection, selectionArgs); - } - postNotifyUri(uri); - return rowsUpdated; - } - - public void setMockNotification(ChangeNotification notification) { - mNotifier = notification; - } - - protected static String addIdToSelection(int match, String selection) { - String where; - switch (match) { - case MATCH_PHOTO_ID: - case MATCH_ALBUM_ID: - case MATCH_METADATA_ID: - where = WHERE_ID; - break; - default: - return selection; - } - return DatabaseUtils.concatenateWhere(selection, where); - } - - protected static String[] addIdToSelectionArgs(int match, Uri uri, String[] selectionArgs) { - String[] whereArgs; - switch (match) { - case MATCH_PHOTO_ID: - case MATCH_ALBUM_ID: - case MATCH_METADATA_ID: - whereArgs = new String[] { - uri.getPathSegments().get(1), - }; - break; - default: - return selectionArgs; - } - return DatabaseUtils.appendSelectionArgs(selectionArgs, whereArgs); - } - - protected static String[] addMetadataKeysToSelectionArgs(String[] selectionArgs, Uri uri) { - List<String> segments = uri.getPathSegments(); - String[] additionalArgs = { - segments.get(1), - segments.get(2), - }; - - return DatabaseUtils.appendSelectionArgs(selectionArgs, additionalArgs); - } - - protected static String getTableFromMatch(int match, Uri uri) { - String table; - switch (match) { - case MATCH_PHOTO: - case MATCH_PHOTO_ID: - table = Photos.TABLE; - break; - case MATCH_ALBUM: - case MATCH_ALBUM_ID: - table = Albums.TABLE; - break; - case MATCH_METADATA: - case MATCH_METADATA_ID: - table = Metadata.TABLE; - break; - case MATCH_ACCOUNT: - case MATCH_ACCOUNT_ID: - table = Accounts.TABLE; - break; - default: - throw unknownUri(uri); - } - return table; - } - - @Override - public SQLiteOpenHelper getDatabaseHelper(Context context) { - return new PhotoDatabase(context, DB_NAME); - } - - private int modifyMetadata(SQLiteDatabase db, ContentValues values) { - int rowCount; - if (values.get(Metadata.VALUE) == null) { - String[] selectionArgs = { - values.getAsString(Metadata.PHOTO_ID), values.getAsString(Metadata.KEY), - }; - rowCount = db.delete(Metadata.TABLE, WHERE_METADATA_ID, selectionArgs); - } else { - long rowId = db.replace(Metadata.TABLE, null, values); - rowCount = (rowId == -1) ? 0 : 1; - } - return rowCount; - } - - private int matchUri(Uri uri) { - int match = sUriMatcher.match(uri); - if (match == UriMatcher.NO_MATCH) { - throw unknownUri(uri); - } - return match; - } - - @Override - protected void notifyChange(ContentResolver resolver, Uri uri, boolean syncToNetwork) { - if (mNotifier != null) { - mNotifier.notifyChange(uri, syncToNetwork); - } else { - super.notifyChange(resolver, uri, syncToNetwork); - } - } - - protected static IllegalArgumentException unknownUri(Uri uri) { - return new IllegalArgumentException("Unknown Uri format: " + uri); - } - - protected static String nestWhere(String matchColumn, String table, String nestedWhere) { - String query = SQLiteQueryBuilder.buildQueryString(false, table, BASE_COLUMNS_ID, - nestedWhere, null, null, null, null); - return matchColumn + IN + NESTED_SELECT_START + query + NESTED_SELECT_END; - } - - protected static String metadataSelectionFromPhotos(String where) { - return nestWhere(Metadata.PHOTO_ID, Photos.TABLE, where); - } - - protected static String photoSelectionFromAlbums(String where) { - return nestWhere(Photos.ALBUM_ID, Albums.TABLE, where); - } - - protected static String photoSelectionFromAccounts(String where) { - return nestWhere(Photos.ACCOUNT_ID, Accounts.TABLE, where); - } - - protected static String albumSelectionFromAccounts(String where) { - return nestWhere(Albums.ACCOUNT_ID, Accounts.TABLE, where); - } - - protected int deleteCascade(Uri uri, int match, String selection, String[] selectionArgs) { - switch (match) { - case MATCH_PHOTO: - case MATCH_PHOTO_ID: - deleteCascade(Metadata.CONTENT_URI, MATCH_METADATA, - metadataSelectionFromPhotos(selection), selectionArgs); - break; - case MATCH_ALBUM: - case MATCH_ALBUM_ID: - deleteCascade(Photos.CONTENT_URI, MATCH_PHOTO, - photoSelectionFromAlbums(selection), selectionArgs); - break; - case MATCH_ACCOUNT: - case MATCH_ACCOUNT_ID: - deleteCascade(Photos.CONTENT_URI, MATCH_PHOTO, - photoSelectionFromAccounts(selection), selectionArgs); - deleteCascade(Albums.CONTENT_URI, MATCH_ALBUM, - albumSelectionFromAccounts(selection), selectionArgs); - break; - } - SQLiteDatabase db = getDatabaseHelper().getWritableDatabase(); - String table = getTableFromMatch(match, uri); - int deleted = db.delete(table, selection, selectionArgs); - if (deleted > 0) { - postNotifyUri(uri); - } - return deleted; - } - - private static void validateMatchTable(int match) { - switch (match) { - case MATCH_PHOTO: - case MATCH_ALBUM: - case MATCH_METADATA: - case MATCH_ACCOUNT: - break; - default: - throw new IllegalArgumentException("Operation not allowed on an existing row."); - } - } - - protected Cursor query(String table, String[] columns, String selection, - String[] selectionArgs, String orderBy, CancellationSignal cancellationSignal) { - SQLiteDatabase db = getDatabaseHelper().getReadableDatabase(); - if (ApiHelper.HAS_CANCELLATION_SIGNAL) { - return db.query(false, table, columns, selection, selectionArgs, null, null, - orderBy, null, cancellationSignal); - } else { - return db.query(table, columns, selection, selectionArgs, null, null, orderBy); - } - } - - protected static String[] replaceCount(String[] projection) { - if (projection != null && projection.length == 1 - && BaseColumns._COUNT.equals(projection[0])) { - return PROJECTION_COUNT; - } - return projection; - } -} |