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: 10077|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:
* ^; \6 X6 s5 L* {0 ^9 X5 w- K
+ K  Z1 d6 {: `8 ~- _$ v public Object buildActions () {# O* d5 E1 w$ \: u+ U5 ^( v6 `1 a7 V
    super.buildActions();
  U$ b! C) r4 h/ B- f   
2 y6 f1 j  x: X6 ^* J. t4 L1 V5 c    // Create the list of simulation actions. We put these in
- _. A6 Z4 D7 o; d    // an action group, because we want these actions to be
* q6 X& H) U. l* \2 \3 `    // executed in a specific order, but these steps should' K! J$ B% S: U. F6 y9 C) z
    // take no (simulated) time. The M(foo) means "The message+ }6 m- ?) p  R
    // called <foo>". You can send a message To a particular
4 W2 K, x7 d" d5 c$ o  X1 j* @    // object, or ForEach object in a collection.
/ [/ [! @# o, i  p        
% ?$ W7 \$ t+ H: `, V    // Note we update the heatspace in two phases: first run, |" _7 C! m. e; L
    // diffusion, then run "updateWorld" to actually enact the4 s$ U  V* G6 M
    // changes the heatbugs have made. The ordering here is
/ P8 [. z8 h, E6 P2 z    // significant!6 C& }8 J) j& G  Q- x4 x
        
( D8 R: R6 K! [% r    // Note also, that with the additional) c' V# |% Q+ ?( ]! y% D
    // `randomizeHeatbugUpdateOrder' Boolean flag we can
# z% A/ g3 H2 E0 A% V+ f1 w    // randomize the order in which the bugs actually run2 }" }9 W; _" u) @8 U) v
    // their step rule.  This has the effect of removing any
+ q8 l" j; w! g6 m& ]. R( [1 ~    // systematic bias in the iteration throught the heatbug
: v3 ~7 n: F/ ^9 ^4 Q$ C- I! [& c    // list from timestep to timestep
( y- I# o+ [6 U7 z& f* @        
" S/ t$ b0 }) i$ w7 N    // By default, all `createActionForEach' modelActions have
- @7 ]9 [. i" Y- c1 Q    // a default order of `Sequential', which means that the
2 ]; U1 J9 N! F& k6 x* S/ ^1 a    // order of iteration through the `heatbugList' will be
4 k8 V( ~) Y' M    // identical (assuming the list order is not changed1 M; L5 y, {* u2 I+ ], }5 ^) \
    // indirectly by some other process).: B$ t! X: l$ T) x; k( H0 E
    . l8 ?# g  B0 k; F. g) k
    modelActions = new ActionGroupImpl (getZone ());
5 U) @+ F; j8 j8 W% X  k
! c( H. @% I4 b: \$ V    try {
: w; x7 ?+ ?6 G! \- X! b      modelActions.createActionTo$message
: G8 F. G/ A0 ^' G        (heat, new Selector (heat.getClass (), "stepRule", false));
6 h8 K! c8 H5 H9 v( C& s    } catch (Exception e) {
9 w: X5 M+ T; p4 g: o0 b      System.err.println ("Exception stepRule: " + e.getMessage ());
; k: G7 i2 s' O) i( _    }
6 I6 L4 u2 H1 H6 k+ a: d9 E+ i( v
    try {  z* S( |; a3 J' a1 B$ }
      Heatbug proto = (Heatbug) heatbugList.get (0);0 b( f$ P1 Y7 s& |, G# i
      Selector sel =
1 w' J- v# s* T7 |        new Selector (proto.getClass (), "heatbugStep", false);, k2 K1 [3 F+ }
      actionForEach =: W! x! P8 N8 }* g/ [: g1 [5 a
        modelActions.createFActionForEachHomogeneous$call
7 z$ }. }* A" h: ?% |        (heatbugList,8 b" {, \/ Y3 K, z+ c; w' C" p0 B
         new FCallImpl (this, proto, sel,  H% b" L8 \9 Q* ~' \. b
                        new FArgumentsImpl (this, sel)));/ Z1 c3 h: x- ~' N
    } catch (Exception e) {
( h) X/ M& a0 d8 M1 ?      e.printStackTrace (System.err);
8 h! _- w' S+ l    }8 C8 D! S. v2 j8 P+ W/ i& S! ?3 u1 }
   
; W8 Z: Q* Z' y    syncUpdateOrder ();+ D% E  p; @1 |3 w. J( n
  F: J3 i/ B0 I& @& M6 n7 F
    try {: D' D' o) O, G6 v$ L
      modelActions.createActionTo$message / Q4 ]3 v  N; Q0 q) s- f+ w
        (heat, new Selector (heat.getClass (), "updateLattice", false));8 l! R. f' @/ F5 X" d; j/ b
    } catch (Exception e) {3 j% i- s% N( p; P
      System.err.println("Exception updateLattice: " + e.getMessage ());. g2 o9 H& R' I0 D! h6 L
    }+ K. {1 z* c" j7 p
        $ s" q, W/ a: x* S+ g( w
    // Then we create a schedule that executes the
5 O$ b& V: h0 z4 h* w; j( D4 u    // modelActions. modelActions is an ActionGroup, by itself it
2 F. L9 Y* p3 F4 ^3 m    // has no notion of time. In order to have it executed in
! @1 t2 ]+ Z# l1 R% j    // time, we create a Schedule that says to use the
: L/ U( o  H; \* x/ t9 c+ b    // modelActions ActionGroup at particular times.  This
5 Q6 Z% w& ~% L5 K    // schedule has a repeat interval of 1, it will loop every
5 [9 l8 D/ `8 O& i- p3 [: I    // time step.  The action is executed at time 0 relative to( P3 ]2 O& N0 U5 a
    // the beginning of the loop.; i( e8 V% X* H/ E( d+ M

# h8 F4 m1 d) `( l- U    // This is a simple schedule, with only one action that is
9 ~8 V9 _! Q9 m    // just repeated every time. See jmousetrap for more
% d+ N9 i. A' e7 l" {: Y    // complicated schedules.( g3 d) A$ n0 J
  
/ }  e: `& ]8 y! m" `    modelSchedule = new ScheduleImpl (getZone (), 1);
! J. t% y+ U: H$ S; x8 N    modelSchedule.at$createAction (0, modelActions);
& A% V5 |6 C/ I        
# J: h; x2 M" E    return this;
# T. o9 S% F* O$ T3 P3 {  }
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, 2026-4-12 12:32 , Processed in 0.017575 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