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: 9546|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:0 j; t9 x: c; R2 ?7 N

/ v3 o) G" A$ V public Object buildActions () {5 D1 i7 u% c# o6 r! Z1 W! B8 A
    super.buildActions();
! }6 M5 L5 V0 ?6 o# G6 C    + x7 Q4 f& b- U0 q  k8 ^6 ]
    // Create the list of simulation actions. We put these in  T" w% @' I: r) h. O9 M3 L
    // an action group, because we want these actions to be& f8 `0 u4 D! M& Q7 X" e
    // executed in a specific order, but these steps should3 e# g' ^# ^! ^3 ?9 J
    // take no (simulated) time. The M(foo) means "The message& z8 D) x+ U5 _* \4 H
    // called <foo>". You can send a message To a particular- }2 B: d) g: u1 w, U% O
    // object, or ForEach object in a collection.
& Q/ h4 z2 S9 g8 ^& A2 e        + n3 H5 W7 A1 U- z
    // Note we update the heatspace in two phases: first run  O( U% l# z- h9 r; b
    // diffusion, then run "updateWorld" to actually enact the
. f9 b( l$ b" o! f& Z    // changes the heatbugs have made. The ordering here is. g' Q) E: T- J* b% d
    // significant!9 u5 e4 n% U- m/ l+ X
        
7 T( [/ h6 D) Z    // Note also, that with the additional
& a: L  J6 F, B% v5 S    // `randomizeHeatbugUpdateOrder' Boolean flag we can( p- u) o# [8 H4 c& ^9 _. b
    // randomize the order in which the bugs actually run- ?0 T3 ]8 v" F; P
    // their step rule.  This has the effect of removing any
, ^& W% S5 n. S( m    // systematic bias in the iteration throught the heatbug
- V0 E+ f$ e7 b7 Z/ S    // list from timestep to timestep
# w; E6 D! y; P7 f# r4 S        
' m5 c$ ]1 w; W    // By default, all `createActionForEach' modelActions have/ N4 o% ^7 `  _/ m# @" c
    // a default order of `Sequential', which means that the
; k) I+ K  v" S' K2 p" e3 S    // order of iteration through the `heatbugList' will be+ n  s+ G0 _! R) {' Q" q
    // identical (assuming the list order is not changed
. B) U, Y1 B2 m9 @/ m1 B    // indirectly by some other process).8 d+ ?0 U: E6 G2 f$ v! V1 E
    # x. }; j; w# Z( T! S2 ?+ T) n
    modelActions = new ActionGroupImpl (getZone ());; Q6 X+ e$ e* e! i. }

  k8 F+ }4 ^$ v* T' {    try {
% O- h+ \) y" d9 @) H4 ]* ?$ W      modelActions.createActionTo$message+ e7 m  r. J' p5 e! M
        (heat, new Selector (heat.getClass (), "stepRule", false));
1 I( Z/ d' P9 @1 g    } catch (Exception e) {
/ ?3 z7 b! |8 H# N% ^      System.err.println ("Exception stepRule: " + e.getMessage ());
  X+ `; j; w6 p* ^  ?) a/ P    }
! U/ v) M: e9 |
. K1 F5 k6 A* l# u" x    try {
" R( _0 {9 c' ^- I8 m: o. i- v      Heatbug proto = (Heatbug) heatbugList.get (0);; a8 n* t. R  @: c) M0 L( |
      Selector sel = 5 a( Z; r& v1 e
        new Selector (proto.getClass (), "heatbugStep", false);
3 {$ U' T/ W5 z& k; [      actionForEach =# a6 K; F3 v! v# T+ E
        modelActions.createFActionForEachHomogeneous$call& h; s% p9 r7 K4 Z. ?% E5 q: q# q! c
        (heatbugList,
6 i6 f6 Z/ n* u( \% R; L; c         new FCallImpl (this, proto, sel,
. ~3 O2 |, E$ z                        new FArgumentsImpl (this, sel)));
  t9 H3 T% a1 t    } catch (Exception e) {. y4 C! f$ N2 O4 R- a. T% K
      e.printStackTrace (System.err);# V$ M- n" D( N
    }4 Y& g! o- {9 L3 L9 r2 A
   
  \9 L, a( @( x4 G    syncUpdateOrder ();
: }' Z" S- O+ c+ R2 N$ w8 e- D& N/ x: `- H5 A' n$ b2 v/ g
    try {# J6 e& }- a: |( O3 g
      modelActions.createActionTo$message
% F7 l" g$ u6 m; I0 H1 N  p# U" T0 g        (heat, new Selector (heat.getClass (), "updateLattice", false));
+ k, ?$ `2 M1 w) H- V1 n    } catch (Exception e) {
1 U1 j" w5 R. z6 h8 i  N      System.err.println("Exception updateLattice: " + e.getMessage ());
# q$ l+ O3 E# R# c    }' o- J8 P) ^' k! y( }
        " N1 i. w; }) h! |( Y
    // Then we create a schedule that executes the0 B" b& E  U% Y0 \& ?9 c: D
    // modelActions. modelActions is an ActionGroup, by itself it% B) ~1 X6 L& c; }) B4 \- x
    // has no notion of time. In order to have it executed in4 n8 x+ O% ~- n1 }, I- u
    // time, we create a Schedule that says to use the- @. ]! c) A* l
    // modelActions ActionGroup at particular times.  This! C. C/ J& ]/ X! V
    // schedule has a repeat interval of 1, it will loop every
; Q- R1 r9 ?( F0 G7 L    // time step.  The action is executed at time 0 relative to
, c3 n- r3 R, T$ C    // the beginning of the loop.
' n! j, E* B5 ^$ k& a
( s1 ?( U' v$ o6 \  v1 \6 p% ~# w    // This is a simple schedule, with only one action that is7 k0 p  v/ ?8 x( E5 T' ^. B0 L" {2 U
    // just repeated every time. See jmousetrap for more
  |6 K7 P5 x, t6 a$ }& u* R0 r% o    // complicated schedules.
" r4 p* G8 x9 j2 N- h  
, w9 q2 x5 t8 J! k7 j    modelSchedule = new ScheduleImpl (getZone (), 1);
$ c) Y6 A  P/ n4 W6 d  Q    modelSchedule.at$createAction (0, modelActions);$ O! c, L4 ^. `  }
        
) B! ^4 a/ e0 S9 C" B3 b+ W    return this;: Y8 h" ~" h9 Q; x# _/ A$ ^
  }
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, 2026-3-10 01:44 , Processed in 0.016258 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