设为首页收藏本站

最大的系统仿真与系统优化公益交流社区

 找回密码
 注册

QQ登录

只需一步,快速开始

查看: 9077|回复: 0

[求助] 问jheatbugs-2001-03-28中某些代码

[复制链接]
发表于 2008-5-25 02:15:22 | 显示全部楼层 |阅读模式
5仿真币
HeatbugModelSwarm中buildActions部分,3个try分别是做什么?查了下refbook-java-2.2,解释太简略,还是不懂,高手指点,谢谢!代码如下:
, C! ~* Y1 `/ F& n+ O, B8 d2 e! S6 c" E
public Object buildActions () {
/ W' N; M# [& s0 a0 L) Q    super.buildActions();
; G) E# f/ \) I2 a% ~6 H    ' K8 w0 ^  L! {( L5 t
    // Create the list of simulation actions. We put these in1 Z! `7 Y& r. F3 t0 x/ P9 M! t4 H  k' J* @
    // an action group, because we want these actions to be) n3 J2 O$ ?$ M. d: N9 W( z
    // executed in a specific order, but these steps should
) e/ M# u7 V: \; i6 L2 }    // take no (simulated) time. The M(foo) means "The message
- T& N  V$ A! Y) D- E+ \/ N6 B' x    // called <foo>". You can send a message To a particular
/ L& @6 r$ f* ]8 E    // object, or ForEach object in a collection.+ n0 M' [0 `& x1 w% l
        : t  m; w" m- n4 C. _
    // Note we update the heatspace in two phases: first run
! R  O: X0 C5 y: x    // diffusion, then run "updateWorld" to actually enact the
! ^) t* y# a$ F6 b6 P0 k3 u    // changes the heatbugs have made. The ordering here is- c3 e5 @3 g! i& Z1 M
    // significant!
( u7 {. A9 F5 U4 [# T3 A        
! b4 b$ ~3 z+ A    // Note also, that with the additional
& Q$ ~! D: Z8 k+ K8 ]& U, }: a    // `randomizeHeatbugUpdateOrder' Boolean flag we can! F! \) i/ K7 J) @* d9 c- i
    // randomize the order in which the bugs actually run, U5 Q$ ?: E! N6 ?
    // their step rule.  This has the effect of removing any
: @8 |/ r& D- z1 |    // systematic bias in the iteration throught the heatbug( I! x* `* G! U* D- u5 y
    // list from timestep to timestep
% _  i% X; R3 _. _; f) s* w        
! i4 V' x  G9 S; ?    // By default, all `createActionForEach' modelActions have# C+ I- b5 B% g9 J' a" _& E
    // a default order of `Sequential', which means that the! ]2 \0 Q/ l6 Y1 l: _
    // order of iteration through the `heatbugList' will be
+ U& n$ u/ O( L* s; q0 ?! Y: z    // identical (assuming the list order is not changed
6 z6 o, E# v4 z- P* F6 ?    // indirectly by some other process).% ?- r; M6 ?0 {
   
/ p7 ]8 }+ E8 _( H4 d; }- o    modelActions = new ActionGroupImpl (getZone ());
. ?' L5 ~. m# D! t+ a% r6 I# s9 I" Y; F2 m% T  B1 @$ C" T" F
    try {; g' \  z, [& ^  p5 f
      modelActions.createActionTo$message4 p5 m- g) H0 A, Z
        (heat, new Selector (heat.getClass (), "stepRule", false));3 V* U* s. [; M2 e0 T
    } catch (Exception e) {( C, M1 {8 V8 L/ [- e- h; ?
      System.err.println ("Exception stepRule: " + e.getMessage ());: X: T$ _/ y1 j
    }, W  ^- w% j1 N# ]0 J
0 E' K! P+ v2 G6 U5 m& \
    try {+ ?4 ~" p4 _  n; F6 }2 @' |
      Heatbug proto = (Heatbug) heatbugList.get (0);6 z* ]" N3 v4 n2 [8 A
      Selector sel = 3 n) G! x% z4 [' L* G& Z
        new Selector (proto.getClass (), "heatbugStep", false);  q' `: E" r) Y: R
      actionForEach =' ^2 ]+ S% ]5 g# i+ }1 h) J
        modelActions.createFActionForEachHomogeneous$call6 H8 m, ~5 L# J
        (heatbugList,+ G- ~6 y* N8 v, J2 D
         new FCallImpl (this, proto, sel,
8 n: ^! S9 C& G; I7 u) ]                        new FArgumentsImpl (this, sel)));2 J! n1 D: N$ O9 e3 Q3 a
    } catch (Exception e) {
% F+ m0 y% C+ K( N      e.printStackTrace (System.err);9 S* c% c$ ^9 v) c& f' ]
    }
& b1 p& y9 n, M# Z; I    2 i! N. n% n7 ?+ l4 ?
    syncUpdateOrder ();
; Q4 R$ ^- z8 i1 p: d5 V
8 k. T! d6 |" `' l: z+ r' t- E    try {% E# ]+ c: s4 L7 l* K# z
      modelActions.createActionTo$message
8 t) k3 o7 D; |2 A+ v$ ~/ H( o        (heat, new Selector (heat.getClass (), "updateLattice", false));- r. W/ @$ H- ^1 }
    } catch (Exception e) {8 R& r/ M# H0 `$ M% l& }: ^
      System.err.println("Exception updateLattice: " + e.getMessage ());2 r6 f4 B: V& v8 V5 p: u; K
    }
8 Z' V2 w, _$ p  R! l4 O+ B        
% U* E0 C  z7 r* a1 ^; W    // Then we create a schedule that executes the
% b9 t8 N6 r: I0 W. b" Q3 P1 }- \    // modelActions. modelActions is an ActionGroup, by itself it
9 q; S1 r7 V; q! E% @    // has no notion of time. In order to have it executed in6 m- g# V% Y& Q5 C. D1 I+ q) O
    // time, we create a Schedule that says to use the
* y% }6 R/ Q0 p3 \8 I    // modelActions ActionGroup at particular times.  This
% s0 v+ ^- I+ q& R& E    // schedule has a repeat interval of 1, it will loop every5 T5 e( h; e! X
    // time step.  The action is executed at time 0 relative to
) H4 _- Y+ L* \8 J. X" o    // the beginning of the loop.
3 M/ J; |1 @( e% e( ^; q) y. U; ]
/ V8 G6 U0 d/ x6 o    // This is a simple schedule, with only one action that is! L2 `% b0 |3 i% I4 \
    // just repeated every time. See jmousetrap for more' Y+ o. [9 @6 U+ L
    // complicated schedules.
" d8 ^8 _2 A6 c7 ~6 Y( w5 ^  6 E+ K( D" s  r+ P1 i3 }0 F
    modelSchedule = new ScheduleImpl (getZone (), 1);0 \2 S7 @) \& T5 r. T
    modelSchedule.at$createAction (0, modelActions);8 K1 {6 H0 v7 N+ e% V; O' \  q
        
" E) V& }9 o& C7 s3 W    return this;" p7 P1 ?% Y! B: I2 u
  }
您需要登录后才可以回帖 登录 | 注册

本版积分规则

QQ|Archiver|手机版|SimulWay 道于仿真   

GMT+8, 2026-2-10 19:03 , Processed in 0.014768 second(s), 11 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表