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: 7898|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:7 x6 }1 W  {7 O+ E/ t3 J
! m6 D. r6 O5 S7 Q  C  b
public Object buildActions () {: u: I; C. U, b7 _3 j' Y  M
    super.buildActions();
) u1 u; D: Y# k   
) C+ Y/ ~, I+ }0 e: M. S6 |2 ]. \    // Create the list of simulation actions. We put these in5 a8 x8 q7 r' g& H# W; q: Q
    // an action group, because we want these actions to be2 s1 g! v( V# i$ ]# N5 n2 M  N
    // executed in a specific order, but these steps should" S. _3 m: O& h5 c0 I
    // take no (simulated) time. The M(foo) means "The message
3 F  s4 Y8 |& g5 k- l- }    // called <foo>". You can send a message To a particular
" z/ |% ^* ^6 e; w% B* S. J6 D    // object, or ForEach object in a collection.! _7 [( Q) l! ]; ^. g* ]
        
2 i6 c& R. l( I! X    // Note we update the heatspace in two phases: first run
" r, P# q' B4 B& I    // diffusion, then run "updateWorld" to actually enact the% b& B% \' D( ^' j9 p
    // changes the heatbugs have made. The ordering here is5 X& U' G& J( B" b/ i5 q6 D# d
    // significant!
# X  T3 C9 ~( ~$ T6 D) r; W6 l+ J        6 B* D) j" @1 {
    // Note also, that with the additional7 k( b0 Q, f' B* X2 k! Z
    // `randomizeHeatbugUpdateOrder' Boolean flag we can
- @; x; w0 e7 w. [1 m: Q& o    // randomize the order in which the bugs actually run' p' p! S! H3 k4 v& w
    // their step rule.  This has the effect of removing any% t# c# g* X9 y0 E+ l- c4 H
    // systematic bias in the iteration throught the heatbug
' g) z" y7 @. ^* Y    // list from timestep to timestep
6 y; D2 Y. x, Z2 D  N1 J2 f        
/ Y. T! T0 t% k3 x! `    // By default, all `createActionForEach' modelActions have
/ Z/ O& I) p7 B. h3 k! f& e: d    // a default order of `Sequential', which means that the9 z9 o% F% ~2 G# l' v1 s' `6 j, }
    // order of iteration through the `heatbugList' will be' f  O! J8 y; y% F) K
    // identical (assuming the list order is not changed1 J- K, K; C( E+ j! I
    // indirectly by some other process).4 O; K) C( z1 l3 V! p8 f
   
9 L$ m( l5 Q* \    modelActions = new ActionGroupImpl (getZone ());5 R: Y6 P# e/ q* O, }4 f2 b+ x1 ?
$ ^; h+ k6 a0 B: M( o
    try {- N9 G6 Q/ N, h' s8 u2 h9 l& k
      modelActions.createActionTo$message
; }2 b. g6 B% H; u: q        (heat, new Selector (heat.getClass (), "stepRule", false));
# E. z. `# i) Y, ]& r2 I    } catch (Exception e) {4 |8 H) Q( U. E, E
      System.err.println ("Exception stepRule: " + e.getMessage ());3 A2 u$ M; R7 k' v" B
    }
- A( T% P  g# X0 v0 Z/ V1 |) s
! {: k) y: q& E; Y! U. O1 h; W1 a    try {
$ I( a- O2 }  k5 ?/ G! p4 b      Heatbug proto = (Heatbug) heatbugList.get (0);
  ~$ x+ z/ E2 h5 m      Selector sel = ) E" W( X" X( \* _1 |8 e0 s% @9 u
        new Selector (proto.getClass (), "heatbugStep", false);; p7 ^# q) ?- k- B" _3 `
      actionForEach =/ ], U9 D: n; x
        modelActions.createFActionForEachHomogeneous$call: l) ?. O/ {! T/ P3 s
        (heatbugList,
6 k0 [8 e# Y  X0 R. N: l         new FCallImpl (this, proto, sel,7 F7 Y8 j. D1 S2 s
                        new FArgumentsImpl (this, sel)));# A, O7 Q: D2 F+ u) f% w$ W
    } catch (Exception e) {
4 n; d0 l, A! n& p6 Z      e.printStackTrace (System.err);
$ U" ^* ^2 t& ]" ~( S    }
! s9 }, D7 j6 v, A* ?    % {) f7 T4 l  O3 O
    syncUpdateOrder ();
' j; t$ t- _# V; Z0 r$ Q. D1 r1 z9 w% g5 ?% {9 I: T% M% J4 q) m
    try {! [3 t; a7 ?4 z8 ]+ n
      modelActions.createActionTo$message 2 T: }  c/ h& ~/ O
        (heat, new Selector (heat.getClass (), "updateLattice", false));0 z! F! W. ?0 ?0 y$ J, n& q3 j& A
    } catch (Exception e) {
# n) h* z- [; ]0 C; |, K! T. C' c      System.err.println("Exception updateLattice: " + e.getMessage ());
% z3 M+ |: _; X" m8 G$ G    }. |# @( Y3 j) Y4 B1 f# y9 U1 d
        : I3 e2 W/ x# F/ M1 J* |+ D# Q8 L
    // Then we create a schedule that executes the, i6 K/ n% [1 R: x# {) l
    // modelActions. modelActions is an ActionGroup, by itself it" R% q% |( A, `
    // has no notion of time. In order to have it executed in9 u) M: j& c9 N7 O
    // time, we create a Schedule that says to use the% G5 |; R1 m) t$ B6 t
    // modelActions ActionGroup at particular times.  This
& ]! @7 C1 S$ V; I( H8 Q4 t    // schedule has a repeat interval of 1, it will loop every: |$ F' _- j! s$ C/ `$ u
    // time step.  The action is executed at time 0 relative to
9 Z9 S7 D, Z# Q0 w2 P    // the beginning of the loop.
# z) S7 I( \) Z% P! D7 B: ]/ |  Y: E* w3 l- k( v
    // This is a simple schedule, with only one action that is
; ]* s0 Z$ R% ~+ G    // just repeated every time. See jmousetrap for more
& u# v0 n5 e# q7 G9 l    // complicated schedules.
6 R: r* A4 ?4 h  
3 f3 [9 Y: k: {& O4 x; p* _) L    modelSchedule = new ScheduleImpl (getZone (), 1);
) h7 t; l  G- ]9 ~# g. |    modelSchedule.at$createAction (0, modelActions);, X3 z! D0 f* U* v3 U
        
4 x  k: @" @. D    return this;! U- n5 |7 E1 n2 I. k% ]" h/ i. w
  }
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, 2025-11-19 13:34 , Processed in 0.014686 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