Update OS X LKDBHelper Demo

Author: li6185377

.DS_Store

@@ -925,7 +925,7 @@ - (NSMutableArray *)searchWithSQL:(NSString *)sqlString toClass:(Class)modelClas
     {
         sql = [sql stringByAppendingString:@" "];
     }
-    if([sql componentsSeparatedByString:@" from "].count == 2 && [sql.lowercaseString containsString:@" join "] == NO)
+    if([sql componentsSeparatedByString:@" from "].count == 2 && [sql containsString:@" join "] == NO)
     {
         sql = [sql stringByReplacingOccurrencesOfString:@" from " withString:[NSString stringWithFormat:@",%@.rowid from ",replaceString]];
     }

LKDBHelper/Helper/.DS_Store

@@ -199,7 +199,7 @@ -(id)modelGetValue:(LKDBProperty *)property
 #else
         [value lockFocus];
         NSBitmapImageRep *srcImageRep = [NSBitmapImageRep imageRepWithData:[value TIFFRepresentation]];
-        NSData* datas = [srcImageRep representationUsingType:NSJPEGFileType properties:nil];
+        NSData* datas = [srcImageRep representationUsingType:NSJPEGFileType properties:@{}];
         [value unlockFocus];
 #endif
         [datas writeToFile:[self.class getDBImagePathWithName:filename] atomically:YES];