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: 9226|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 \! n/ Z+ }3 G! Y! C
7 A- x) w$ w5 i+ i7 f; G- i2 C6 N' H" ^! A public Object buildActions () {. R8 b0 m& ~( h$ e3 b+ J
    super.buildActions();
' f' F0 b! u9 q    ! G( F. c1 h$ Y# {  n- E2 C2 F) M: X: {
    // Create the list of simulation actions. We put these in
7 c# K/ R% x  ~9 j4 ]7 ~    // an action group, because we want these actions to be: ]* a: u$ v1 j: K* a
    // executed in a specific order, but these steps should
( f7 o4 X/ E: C! d* Y3 |# @    // take no (simulated) time. The M(foo) means "The message
3 i$ c5 d. S, j* a3 O' A    // called <foo>". You can send a message To a particular
: g+ V3 w  E, C/ o* S3 D' Y    // object, or ForEach object in a collection.9 K- q  \% V2 e! M  b, _& n
        ! b' r1 a& h: A$ X  y
    // Note we update the heatspace in two phases: first run
( o! ^0 x7 V. W% Q5 l" Y2 |5 `- M    // diffusion, then run "updateWorld" to actually enact the
  @' C1 s# h/ a8 |. c    // changes the heatbugs have made. The ordering here is- `+ `) h) u. D1 n5 O, W$ v$ k% B
    // significant!" {% N# S# X3 M( [* [
        9 f& s) Q( V) I& f
    // Note also, that with the additional) `9 [2 s- A3 a& s
    // `randomizeHeatbugUpdateOrder' Boolean flag we can
0 ]) T3 H  w0 N+ O  J- r    // randomize the order in which the bugs actually run
' W. i7 f, Q- k    // their step rule.  This has the effect of removing any) H7 @* p4 O( ]# @: @: I
    // systematic bias in the iteration throught the heatbug
' z% S6 a% ~  d7 W& M% G5 j    // list from timestep to timestep( d+ h9 g# x6 x) R* w! E. ]
        
# ?& J0 t0 h1 {    // By default, all `createActionForEach' modelActions have
$ i/ [: o& r( s1 k' n    // a default order of `Sequential', which means that the
# K! @0 }; @2 H8 @! n    // order of iteration through the `heatbugList' will be6 ^5 X. D# q7 p1 q
    // identical (assuming the list order is not changed
7 t' U0 V0 u; E+ P& a% Q    // indirectly by some other process).
1 Q6 ?# r0 t' e( k+ z3 a' ]    ; l3 P  c8 U7 J
    modelActions = new ActionGroupImpl (getZone ());9 i2 J" q! |9 }4 S4 Z- t' |

" g: J. v- }+ u  W; k# `  ]7 S* a    try {/ j; x! Q# N: J! T/ e! p
      modelActions.createActionTo$message
: O$ r* E. K/ C$ s' A; v        (heat, new Selector (heat.getClass (), "stepRule", false));
* ]& s7 q3 U1 D9 B4 b! c. W5 J: S    } catch (Exception e) {
9 J7 a4 o3 r- I. {      System.err.println ("Exception stepRule: " + e.getMessage ());* t4 U0 c+ E; D1 P! z8 W8 B
    }
5 }0 ]- C/ O4 |
& z, M6 R8 U% }% }& A    try {
; A2 M  R4 \- G4 h      Heatbug proto = (Heatbug) heatbugList.get (0);
4 o8 R  y2 ]8 C5 K- g+ e      Selector sel = . U& z' i/ T8 |  f& c; y
        new Selector (proto.getClass (), "heatbugStep", false);
( I: `! f" [$ Q5 c2 m3 Y      actionForEach =
/ Q( x9 Y* g  A# p0 B! P        modelActions.createFActionForEachHomogeneous$call
* t5 l  j# Q' O3 e, T        (heatbugList,* r; }( U+ `% I; P: ^' [
         new FCallImpl (this, proto, sel,
% }$ y- W' S9 u6 u& U                        new FArgumentsImpl (this, sel)));. x0 T# f* a# G8 j5 J& h0 l
    } catch (Exception e) {* \2 |6 P' D( Z/ h! e
      e.printStackTrace (System.err);
) [+ K1 R" o5 p0 p8 X% x    }# k7 i& p& C0 A* Z
    ! @. \/ G- I, y2 ]/ Q' E4 l5 G% |
    syncUpdateOrder ();' v' g/ l2 T$ @
  d: B3 H0 c0 t' n  f
    try {
# t' i# _  C0 O: ^6 F8 f. R      modelActions.createActionTo$message ' m; C$ _3 Y( V& z, C
        (heat, new Selector (heat.getClass (), "updateLattice", false));
9 ]8 @) Y. B  K' @! B: l7 V( F- N    } catch (Exception e) {
0 ^+ A' B# K/ Q8 R3 T/ G      System.err.println("Exception updateLattice: " + e.getMessage ());! G/ m, q$ ?$ u4 }& x! D
    }
. r' y( q2 G) k' i        : G3 w0 c4 g" R& T
    // Then we create a schedule that executes the
# O' i- {9 j  A, a    // modelActions. modelActions is an ActionGroup, by itself it. o& G/ K2 A/ v1 s+ s, R1 o. ~- x
    // has no notion of time. In order to have it executed in
* y! z- ]7 C8 [; R; u    // time, we create a Schedule that says to use the3 G0 _3 q3 c# K) J, {6 J  {
    // modelActions ActionGroup at particular times.  This$ _' ^6 {7 \: Z5 d- @# o9 I
    // schedule has a repeat interval of 1, it will loop every
7 T- c- U1 ^4 h/ _4 B. E    // time step.  The action is executed at time 0 relative to
: i! B# X6 Y2 w; T9 W% i- a    // the beginning of the loop.
; P  g7 K- K( y# i* {! y" H" I3 J9 z) H. G: Z( o9 A! q& a
    // This is a simple schedule, with only one action that is
# b7 a! W/ k; m6 c5 f    // just repeated every time. See jmousetrap for more/ e! {1 f5 u& n: g! m; \6 }
    // complicated schedules.
( e3 k1 C1 K$ B  
! s" O* s" s6 f( W! c0 ?" L    modelSchedule = new ScheduleImpl (getZone (), 1);/ a; \% s; f: ?0 w( }
    modelSchedule.at$createAction (0, modelActions);
1 y3 ]* U$ w9 B; b# r$ q        
6 o2 z8 X9 k& m    return this;
3 ~9 A' N8 L% h* ?& K* B  }
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, 2026-2-18 16:23 , Processed in 0.012620 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