Example: 歌曲排行
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| @startuml Example-Top-Song-Iterator-Pattern
interface Traversable
{
}
interface Iterator
{
+ current(): mixed
+ key(): scalar
+ next()
+ rewind()
+ valid(): bool
}
interface IteratorAggregate
{
+ getIterator(): Traversable
}
Traversable <|-- Iterator
Traversable <|-- IteratorAggregate
class Song
{
# name: string
# singer: string
# releaseDate: DateTime
+ __construct(array data)
+ getName(): string
+ getSinger(): string
+ getReleaseDate(): DateTime
}
class SongCollection
{
# dataOfSongs: array
# items: Song[]
+ __construct(array dataOfSongs)
- generateSongs(array dataOfSongs): Song[]
+ getItems(): Song[]
+ reverse(): static
}
IteratorAggregate <|.. SongCollection
Song -o SongCollection
class SongIterator
{
# collection: SongCollection
# position: int
+ __construct(SongCollection songCollection)
}
Iterator <|.. SongIterator
SongCollection <- SongIterator
class Program
{
# songCollection: SongCollection
+ __construct(array song)
+ list(): array
+ listReverse(): array
}
SongCollection <-- Program
@enduml
|
ʕ •ᴥ•ʔ：若不熟悉 UML 類別圖，可參考UML類別圖說明。