class Image implements Comparable { Picture picture Integer size byte[] data String contentType Integer width Integer height Date dateCreated = new Date() Date lastUpdated = new Date() static belongsTo = [ Picture ] static mapping = { picture index: 'images_index', unique: true size index: 'images_index', unique: true data type: 'binary' } static constraints = { data(maxSize: MAX_SIZE) } static final Integer MAX_SIZE = 10 * 1024 * 1024 static final Integer Original = 1 static final Integer Large = 2 static final Integer Medium = 3 static final Integer Small = 4 static final Integer[] Widths = [ 0, 0, 500, 250, 100 ] static final Integer[] Heights = [ 0, 0, 500, 250, 100 ] static final String[] Names = [ '', 'Original', 'Large', 'Medium', 'Small' ] int compareTo(obj) { size.compareTo(obj.size) } String filename() { Image.filename(picture.id, size) } static String filename(long id, int size) { if (size == Original) { return "${id}-${Names[size]}.jpg" } else { return "${id}-${Names[size]}.png" } } }