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: 7588|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 _5 |1 [6 X. V8 x* _" u

$ n2 \2 x5 R2 G! e) l3 | public Object buildActions () {
# U# T4 |* Q7 S( H" u/ o9 R    super.buildActions();1 D5 x* f- g( B; J8 d& {8 ?$ Q
   
2 L' f! g- v, G0 V& g    // Create the list of simulation actions. We put these in
# _; u, X' X: N    // an action group, because we want these actions to be0 L- |: C8 m! U# w" M+ g2 W
    // executed in a specific order, but these steps should
5 p' }  E( ^5 @2 y' N. a    // take no (simulated) time. The M(foo) means "The message4 ?$ o% x! Q# F
    // called <foo>". You can send a message To a particular
6 F3 Z& r. a0 D8 U( Y    // object, or ForEach object in a collection.
$ G7 q0 a/ q7 F% u3 H+ H9 L7 E3 d9 l5 h        
( t; i+ z$ ~' R7 l) ]& Y    // Note we update the heatspace in two phases: first run4 V, e9 T, {( r# C! s
    // diffusion, then run "updateWorld" to actually enact the# d1 K% x, h* y$ c  Q1 k
    // changes the heatbugs have made. The ordering here is
$ S: I; T0 u  A8 K7 l9 `* G    // significant!  O* {8 n" p( ]
        
3 j% K! K7 ^' C6 ^& s1 c6 q    // Note also, that with the additional* G& H7 S+ o; @, ~9 @6 L
    // `randomizeHeatbugUpdateOrder' Boolean flag we can0 N3 U" s+ d5 H' ~* s: \! }
    // randomize the order in which the bugs actually run
0 ~: J/ b5 q( X    // their step rule.  This has the effect of removing any1 l" a& o1 [$ U. N# Z- z4 I8 ^& x
    // systematic bias in the iteration throught the heatbug
0 C& B: g6 }* M  w9 x. l+ F: L    // list from timestep to timestep
7 s) A/ U$ r4 `        
* j0 r! d+ q( q) j) c3 {+ U    // By default, all `createActionForEach' modelActions have5 x* _1 [4 Y3 @* x3 [5 `, W  G
    // a default order of `Sequential', which means that the
4 z/ h2 w) K3 O, T2 H8 |! C    // order of iteration through the `heatbugList' will be& _8 i% v2 R. [5 B- U& s- q7 i2 Q7 c  @
    // identical (assuming the list order is not changed
9 c) w* K; r2 B* @- {    // indirectly by some other process).
+ @" o# `8 h9 L7 V2 D( \   
+ C0 m2 q* t% ^$ G! u    modelActions = new ActionGroupImpl (getZone ());9 J: p0 ^% V( }. Z1 E" [
1 Q" Y0 }6 I: h: N9 [
    try {7 |* p: Q" B1 B7 R
      modelActions.createActionTo$message
% |% F- J2 c) b0 a        (heat, new Selector (heat.getClass (), "stepRule", false));
1 Z! [% f5 G  G* N# U    } catch (Exception e) {
$ @- D9 i3 i2 H" _* B7 q( ^# J4 \      System.err.println ("Exception stepRule: " + e.getMessage ());
! r" {9 o: Z1 Q& b: [    }; B; q4 N$ x% _" K) H

+ N( T2 {/ Y$ R* C9 @9 N    try {+ k0 J% t! a, g. O
      Heatbug proto = (Heatbug) heatbugList.get (0);
$ \$ J  D1 n  m4 \/ Y6 y2 |      Selector sel = : J; u* i- R- w
        new Selector (proto.getClass (), "heatbugStep", false);* r7 U/ t5 o0 ]! R% L
      actionForEach =& ?( ^2 u6 h3 u" s% ?7 B& o  H7 z
        modelActions.createFActionForEachHomogeneous$call
+ X/ Q: F4 L1 Z        (heatbugList,, x) Q  f8 H8 [+ y9 f" q' q
         new FCallImpl (this, proto, sel,% O  r& @, f3 A! O9 {" Y' s
                        new FArgumentsImpl (this, sel)));
8 n- K7 t, ]' q9 L5 d2 w" N) m    } catch (Exception e) {
! P. {8 ~- \. ~  Z6 p' z+ D      e.printStackTrace (System.err);( @  V2 |. O( @5 D5 y% H! r2 |
    }
, w, N+ n" f3 Z; v: @$ @; c: C   
$ ^6 z, y' L: j/ j# |    syncUpdateOrder ();' j% N4 Q, f  Q; \  S8 D

) B/ C5 l) i. ]; t8 v    try {$ g: I: H: H' T/ e+ ?
      modelActions.createActionTo$message , \1 h. C( J# W# ~9 |+ C1 y
        (heat, new Selector (heat.getClass (), "updateLattice", false));$ P8 s( w1 S# Y$ }( a
    } catch (Exception e) {
; n( s' h8 c/ m+ v$ \  H      System.err.println("Exception updateLattice: " + e.getMessage ());
0 g$ f; }, r  Q    }. S7 ~8 K0 }/ h' f
        2 R. W1 i* z) S$ W
    // Then we create a schedule that executes the/ v. Q9 z  x' N  T, y" D: p
    // modelActions. modelActions is an ActionGroup, by itself it3 P4 Q/ V2 \5 r- Y7 k0 b, j# Q5 T
    // has no notion of time. In order to have it executed in
  I$ g1 ?* I" {( g# L4 D; V    // time, we create a Schedule that says to use the8 ]5 B& C6 T6 _
    // modelActions ActionGroup at particular times.  This
, A: C! |$ f+ S3 f5 ?    // schedule has a repeat interval of 1, it will loop every( f" K! H5 K' |. S
    // time step.  The action is executed at time 0 relative to; r9 V, T+ \9 f- `, b- k
    // the beginning of the loop.7 l! K" Z3 F! ?, ^! b/ f

" I" ?2 }& A4 s) p6 K& c' P    // This is a simple schedule, with only one action that is
; z% J6 g( S" A1 S+ |" j; W    // just repeated every time. See jmousetrap for more# Q) [& o0 p$ J  c/ t' P' a+ _/ S
    // complicated schedules.0 W" s5 k! C" z- _# ]1 U2 h
  
; X6 \/ k2 V0 Y    modelSchedule = new ScheduleImpl (getZone (), 1);
3 Z, @! z3 `9 M8 F) j* L; x    modelSchedule.at$createAction (0, modelActions);5 @  ?' k: d8 l; \/ S& ]7 h
        " o/ g% s; ~! J7 b, K: S8 ^* |! r
    return this;
# G, i2 e# R' p+ }# E  }
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, 2025-10-14 21:03 , Processed in 0.013476 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