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: 10151|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:% \# _4 A# y; C: Y3 |' G) p/ r

' }& i+ v( F3 Y8 f, a! g# Z public Object buildActions () {
: \0 F+ O+ l2 Q. w; M6 d+ j( m$ B% e    super.buildActions();! O& N6 z$ z; l: o7 e+ J; Z
    7 c1 k) G7 _6 X. ?1 l
    // Create the list of simulation actions. We put these in
( n( ?& e8 i: R: ^$ B3 [1 }5 t6 K    // an action group, because we want these actions to be0 C! G6 H% C% G
    // executed in a specific order, but these steps should
; J- p1 |2 k6 G: m8 r+ H# L    // take no (simulated) time. The M(foo) means "The message
7 z/ |: n3 W: }1 f- z! o8 w+ R+ h    // called <foo>". You can send a message To a particular. e/ g% @3 N# ^) R# |; W  h
    // object, or ForEach object in a collection.0 K& U/ j- a: r7 {- l+ l
        & B4 }( M; P3 @. v
    // Note we update the heatspace in two phases: first run
3 D  {8 m3 f5 P    // diffusion, then run "updateWorld" to actually enact the9 T/ M  s( s/ }0 D' @, `
    // changes the heatbugs have made. The ordering here is7 c: K7 C* c2 ~# d+ H* U
    // significant!
9 n& p5 f% s! Q' u2 b7 |' i        , V, M" E/ I, o2 Y
    // Note also, that with the additional( Z6 m- Y6 i9 t4 `- p
    // `randomizeHeatbugUpdateOrder' Boolean flag we can5 n! o  }  I  g+ U% Q8 r, b* x
    // randomize the order in which the bugs actually run, C5 m- m+ X2 I* o- a. |
    // their step rule.  This has the effect of removing any
7 k8 D: @6 }+ @( {. X" _+ g8 Q    // systematic bias in the iteration throught the heatbug
& F# o0 S& R2 N8 U/ {$ ?+ ]+ D: a& j    // list from timestep to timestep) G! G7 J' ^/ s" o( k
        
+ ^7 a. }; C/ F5 c  Z9 y/ s    // By default, all `createActionForEach' modelActions have
" R+ J7 U5 a( B    // a default order of `Sequential', which means that the8 @) f. p5 t5 A' G
    // order of iteration through the `heatbugList' will be
; Q  s- h6 v# T7 R" K& @$ @; C) D, ^    // identical (assuming the list order is not changed
$ b9 x1 k' J: q( m/ k    // indirectly by some other process).
0 r2 D! U" i5 B: c; R6 w   
5 G2 e, I' _! M+ c' g    modelActions = new ActionGroupImpl (getZone ());
/ {! A1 ~$ s. [$ }6 r7 T. k6 T$ K5 K' i  o, G. W
    try {! x& w6 G2 b# A/ `9 b1 \- T
      modelActions.createActionTo$message
0 X2 z7 e8 i7 E2 P- S        (heat, new Selector (heat.getClass (), "stepRule", false));; g/ y2 C; |7 N3 V# G: a8 v( |3 }; g
    } catch (Exception e) {' |% ~/ F( U, Q$ ]& F7 e) ~
      System.err.println ("Exception stepRule: " + e.getMessage ());) h2 A" ]. `( N0 j3 p" F% ?
    }8 y7 c! g5 w# v4 K7 Y, ?  h
1 E7 e4 e7 v' K9 n7 L  Y
    try {
& `2 H0 J) C7 }0 \$ |& I      Heatbug proto = (Heatbug) heatbugList.get (0);
  G7 R2 I3 [2 C8 M! b, N      Selector sel = : y# z; D& T% p# |
        new Selector (proto.getClass (), "heatbugStep", false);$ f6 B! W$ T/ N8 z, n$ T6 l
      actionForEach =
) E, n$ K0 ^4 Z: g  ~; l$ A        modelActions.createFActionForEachHomogeneous$call; F! E( T3 l' ^9 R/ p$ u
        (heatbugList,
# U7 n! X6 Z8 q8 W- o         new FCallImpl (this, proto, sel,
2 ~4 ?( k0 h$ q9 v# V2 r4 Y                        new FArgumentsImpl (this, sel)));
0 g0 ~6 H& R7 Z0 c9 J/ z    } catch (Exception e) {
% A, P' R7 K' s" E$ p& q      e.printStackTrace (System.err);! s) q; o5 p$ g8 X% [4 P
    }
% W, H- a/ x* q, ?7 \      `6 j3 D' ]& p% {' {- u) O  [5 O8 r  p
    syncUpdateOrder ();; T( {# J2 U6 z5 J( m* ^+ q7 o' }' P& |4 H
) Y8 ]! H8 `9 I: t- O+ ^
    try {* x% x9 U, W% Y1 q' S/ L) |
      modelActions.createActionTo$message
# T& P' o0 _: |2 Z        (heat, new Selector (heat.getClass (), "updateLattice", false));
' ^/ X5 v( b$ m+ ]    } catch (Exception e) {9 T5 k5 j. G0 q9 a# M% H; H
      System.err.println("Exception updateLattice: " + e.getMessage ());! Z, X2 ^: g8 b. q7 G
    }
) U5 H( S5 H2 E. K$ [        
+ O! |, R2 h! m" C    // Then we create a schedule that executes the+ w$ [% j/ a2 F3 h  [" F. I
    // modelActions. modelActions is an ActionGroup, by itself it- E; d1 J6 A+ n' _
    // has no notion of time. In order to have it executed in4 J. O' @# F* q4 |
    // time, we create a Schedule that says to use the
: I$ Z( ?: q+ @( J3 y    // modelActions ActionGroup at particular times.  This. P. s- ~, A8 `: F+ D
    // schedule has a repeat interval of 1, it will loop every' F- L+ K5 ?; ~& o9 J
    // time step.  The action is executed at time 0 relative to5 }# p# {. e4 y" v
    // the beginning of the loop., t$ _# a2 h) u8 O
( R) K5 p+ J2 p& o3 Q
    // This is a simple schedule, with only one action that is
) t/ S  C% n+ Y9 [# r    // just repeated every time. See jmousetrap for more, L1 \; m' N% l# [. d1 ^
    // complicated schedules.
# p! Q9 Z2 k: T% i  L( m4 `  
9 t- i7 _: d% ?7 D3 G& }1 t    modelSchedule = new ScheduleImpl (getZone (), 1);
. g5 n* t, ~8 p4 h    modelSchedule.at$createAction (0, modelActions);; ~3 s! |/ M" S. F$ P$ \6 ?
        
3 ?/ j' l  D8 j" Q' x    return this;
4 a/ f/ E: l- K  \1 |, L" d4 K. g  }
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, 2026-4-16 22:04 , Processed in 0.015097 second(s), 12 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表