/MapView/Map/RMDBTileImage.m
http://github.com/route-me/route-me · Objective C · 58 lines · 18 code · 8 blank · 32 comment · 4 complexity · d5d33c4ad255cab102eb3b2968b947e4 MD5 · raw file
- //
- // RMDBTileImage.m
- //
- // Copyright (c) 2009, Frank Schroeder, SharpMind GbR
- // All rights reserved.
- //
- // Redistribution and use in source and binary forms, with or without
- // modification, are permitted provided that the following conditions are met:
- //
- // * Redistributions of source code must retain the above copyright notice, this
- // list of conditions and the following disclaimer.
- // * Redistributions in binary form must reproduce the above copyright notice,
- // this list of conditions and the following disclaimer in the documentation
- // and/or other materials provided with the distribution.
- //
- // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- // POSSIBILITY OF SUCH DAMAGE.
- // RMDBTileImage is a tile image implementation for the RMDBMapSource.
- //
- // See RMDBMapSource.m for a full documentation on the database schema.
- //
- #import "RMDBTileImage.h"
- #define FMDBErrorCheck(db) { if ([db hadError]) { NSLog(@"DB error %d on line %d: %@", [db lastErrorCode], __LINE__, [db lastErrorMessage]); } }
- @implementation RMDBTileImage
- - (id)initWithTile:(RMTile)_tile fromDB:(FMDatabase*)db {
- self = [super initWithTile:_tile];
- if (self != nil) {
- // get the unique key for the tile
- NSNumber* key = [NSNumber numberWithLongLong:RMTileKey(_tile)];
- RMLog(@"fetching tile %@ (y:%d, x:%d)@%d", key, _tile.y, _tile.x, _tile.zoom);
-
- // fetch the image from the db
- FMResultSet* rs = [db executeQuery:@"select image from tiles where tilekey = ?", key];
- FMDBErrorCheck(db);
- if ([rs next]) {
- [self updateImageUsingImage:[[[UIImage alloc] initWithData:[rs dataForColumn:@"image"]] autorelease]];
- }
- [rs close];
- }
- return self;
- }
- @end