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: 9664|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:
& J" j0 ^1 @+ s. j3 I" v) U$ {+ k3 b# I' b; m" i
public Object buildActions () {
+ v# e% i: r9 x' N    super.buildActions();
' j, @$ R0 i5 x, `7 ?    5 N! y; n9 _) L2 I7 t
    // Create the list of simulation actions. We put these in; c5 t: Z. p. T" }; s; @& |
    // an action group, because we want these actions to be4 f0 ]* P% k  F* w+ {* z- U
    // executed in a specific order, but these steps should* M' c7 f  e) Q4 Y& W0 i0 V
    // take no (simulated) time. The M(foo) means "The message
1 Z  }8 ]) X1 C1 o    // called <foo>". You can send a message To a particular
) N& o9 o' [( R+ J0 X" z- C    // object, or ForEach object in a collection.8 N" t1 J9 a# S* [# l
        0 }- y: H  S& h' C+ M: a# g0 t1 O
    // Note we update the heatspace in two phases: first run
3 r  e  E9 _+ @( l; V+ R    // diffusion, then run "updateWorld" to actually enact the
, I5 h2 _4 v; d* }7 B    // changes the heatbugs have made. The ordering here is: I8 t- _( b: d  U" {) a5 b4 Z
    // significant!
$ k! v5 x! f: \6 A( R. O7 K        
! b2 S4 ^" r+ e; b    // Note also, that with the additional
) k3 s! I  b2 F% g' @  L7 E! C    // `randomizeHeatbugUpdateOrder' Boolean flag we can
9 n9 o! e) l- C2 \0 U    // randomize the order in which the bugs actually run
  t! C  J$ z. a' E* t' {% d8 \. [% k  [, a    // their step rule.  This has the effect of removing any9 w7 M/ S* u2 m% |3 y
    // systematic bias in the iteration throught the heatbug
, F+ q: i* b0 d. B1 x    // list from timestep to timestep
9 M& R5 f% K' i        
3 n4 \2 u: E0 S# c% x    // By default, all `createActionForEach' modelActions have8 x' y( A; C% ]# U: m
    // a default order of `Sequential', which means that the
6 K6 U! q6 [$ y# M6 _$ e    // order of iteration through the `heatbugList' will be8 y% U  k0 B" @4 X% k
    // identical (assuming the list order is not changed) S7 b- T8 l9 h" }& W
    // indirectly by some other process).4 {2 \) [7 E' `' S* u! j
    ' O7 a9 l" u+ a
    modelActions = new ActionGroupImpl (getZone ());
7 w3 t& l# E( t+ O9 L1 m  k% w6 k' A
# k" G+ n+ Z7 A5 S" d. L+ J7 \    try {" q5 B: B; V+ t; f# \+ @4 R
      modelActions.createActionTo$message
+ z4 N; Z0 h$ q4 W        (heat, new Selector (heat.getClass (), "stepRule", false));
. {- w1 N2 I5 z  s    } catch (Exception e) {
) f2 [; }; i& ^5 E: c- C      System.err.println ("Exception stepRule: " + e.getMessage ());
( ]0 j' u& X7 F" R    }
$ T& `* \! q# f( N) ^3 ]
4 m9 M9 U( S6 R1 e    try {
, ]8 w0 _; T6 w  O% m      Heatbug proto = (Heatbug) heatbugList.get (0);( Y, w% ]9 r9 g& i
      Selector sel =
% G, f/ `/ Y# C6 Y8 o        new Selector (proto.getClass (), "heatbugStep", false);, ^/ q2 g/ J9 c" l5 s# x( W
      actionForEach =
( I% @2 G: f" a        modelActions.createFActionForEachHomogeneous$call
5 d% x" b2 F. O: I: k        (heatbugList,
6 ~. A+ X) x4 N8 T         new FCallImpl (this, proto, sel,
4 K- D; p" x8 \+ P9 _: d8 ~                        new FArgumentsImpl (this, sel)));/ @# g# u0 n% P/ Z
    } catch (Exception e) {
( i' g/ f/ _" Q/ P: ?      e.printStackTrace (System.err);
) ~5 W8 U4 W1 e6 w$ V    }
1 Z8 c5 q* x( k    9 Z, f, @  U" B
    syncUpdateOrder ();# b6 b7 m2 F: [1 z6 L
" p& J# c$ V( y4 J% k, m8 B9 Y: z
    try {
9 e3 U$ n: m: z. M3 P( M      modelActions.createActionTo$message
1 _6 ?/ q8 ^( E) M9 n9 ~4 U        (heat, new Selector (heat.getClass (), "updateLattice", false));
: N* h+ {  u. |6 G    } catch (Exception e) {+ `2 f0 K7 a2 p% R
      System.err.println("Exception updateLattice: " + e.getMessage ());( n9 q2 c: }3 D/ I
    }) b1 }/ u( H1 ]- Q+ f
        
! l' Z  x; Y; ^3 _+ P) m    // Then we create a schedule that executes the0 Z" ?2 }8 X) Q, k
    // modelActions. modelActions is an ActionGroup, by itself it
- k. p6 ^% d+ f' N, o    // has no notion of time. In order to have it executed in
; q9 A  k9 S/ P    // time, we create a Schedule that says to use the3 I' b* o  h% i9 x: |
    // modelActions ActionGroup at particular times.  This
. \$ i+ H$ t8 t/ I/ D( j2 g    // schedule has a repeat interval of 1, it will loop every
6 s9 |2 i9 _, `( n3 `  }* \    // time step.  The action is executed at time 0 relative to
; a# j. \& X; q/ f7 L* W0 C4 X, }    // the beginning of the loop.' {: i5 T6 z7 x) d9 ^

! p4 G! _6 R1 E- L9 a    // This is a simple schedule, with only one action that is
/ o0 `% _9 Y) p0 U# W    // just repeated every time. See jmousetrap for more
/ z: Y: M4 t( |    // complicated schedules.5 L! I+ j' x  G. |. g; m4 @% W
  % D4 ]! h9 S7 P6 d  Z5 b+ x
    modelSchedule = new ScheduleImpl (getZone (), 1);5 I# m, S* v$ a& p8 ?- R
    modelSchedule.at$createAction (0, modelActions);; B# V' G5 J" [0 Y' `, l/ P  {# }: e$ {
        
4 ~8 I4 b% `  Z3 D0 Z    return this;9 M5 z6 Q3 g) W6 X& N. R; K
  }
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, 2026-3-16 03:13 , Processed in 0.014172 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