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: 11888|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:! [0 g3 F8 C! w6 H3 N) C

( D, m# n6 r% c public Object buildActions () {
* S% p0 c, Z& B    super.buildActions();
- b4 Q3 f( s' d2 ?# s7 D. r" |   
% e8 y7 m: w+ j0 K    // Create the list of simulation actions. We put these in
2 ?; w% {  O5 _+ h    // an action group, because we want these actions to be
0 d# b& A& N- U9 c1 r" q- X    // executed in a specific order, but these steps should
7 B) u5 q6 i0 n: D0 W6 h    // take no (simulated) time. The M(foo) means "The message* b9 f6 L( o' m; }
    // called <foo>". You can send a message To a particular
% H+ k& z- v3 n& S; w$ k# S) m. Z    // object, or ForEach object in a collection.
6 R$ l) B0 o) D        
. i  Y6 M( U5 `    // Note we update the heatspace in two phases: first run
7 L  B$ X7 A% f$ e, g    // diffusion, then run "updateWorld" to actually enact the
( Y9 q$ p- [) \, n/ v( N; D    // changes the heatbugs have made. The ordering here is
( L- p! ^% C4 o; ]7 ~: e    // significant!
3 l) I7 [8 @$ K- l& q. {% R5 Q        
# B7 J/ h+ E2 s    // Note also, that with the additional  A) M; C. L9 e* H$ A
    // `randomizeHeatbugUpdateOrder' Boolean flag we can, M5 N+ S* X* p6 Y! _& W0 K; Y
    // randomize the order in which the bugs actually run! d! f/ ~4 M* K$ V
    // their step rule.  This has the effect of removing any; `6 f: P" @/ z- P0 _  v8 \; P
    // systematic bias in the iteration throught the heatbug
, ~4 b$ g  w$ p! K( y. \    // list from timestep to timestep
; P! _- N5 O, ?0 [3 ?        
$ n' m8 ^! F, E& d    // By default, all `createActionForEach' modelActions have: _0 B$ O0 O4 b- u0 P; d; d' V
    // a default order of `Sequential', which means that the. W: W& l) `1 ?2 E1 l( P
    // order of iteration through the `heatbugList' will be
8 H2 f, Y3 y: K    // identical (assuming the list order is not changed7 {8 V! P6 V! R1 }/ a& K+ H" c
    // indirectly by some other process).$ m& n- R* S( X) o
   
; s; a8 f1 Z% l8 A/ M7 E    modelActions = new ActionGroupImpl (getZone ());
4 I* y: a; p0 c* v
/ }) y6 k* G$ F4 n9 H) W/ [    try {  [, D3 M; N. j3 K# [6 n7 t
      modelActions.createActionTo$message) L* p4 G* j8 _* f5 `$ v: l
        (heat, new Selector (heat.getClass (), "stepRule", false));
7 T" @9 |$ P; ]2 t( v: g    } catch (Exception e) {
" u2 U' Q! ?4 S. D& T, f0 v      System.err.println ("Exception stepRule: " + e.getMessage ());" u& f4 {* a9 M# j
    }
/ e+ E% z: r, ^9 ^) j* x, m/ F: f  t8 N6 Y3 G
    try {4 o0 L) V2 ]* ~) }9 a! i0 \+ s
      Heatbug proto = (Heatbug) heatbugList.get (0);
1 c* p7 s  i# h7 X      Selector sel = % X9 l9 i) z4 n7 w2 V3 z, D
        new Selector (proto.getClass (), "heatbugStep", false);
5 }) Q% g% m9 @. v      actionForEach =* h! r% Y* _8 N; e& [8 k2 D
        modelActions.createFActionForEachHomogeneous$call
! Q1 ?2 ]% [: A/ W! S" R        (heatbugList,/ y0 b- K4 B. P% c# l$ O
         new FCallImpl (this, proto, sel,' d$ x- Q1 _# ]
                        new FArgumentsImpl (this, sel)));
  M" j) g- a- g    } catch (Exception e) {
7 C$ W$ v- ^3 Q      e.printStackTrace (System.err);( R! C0 K% c. z- H9 Q
    }# U. ?; T: R+ a" U, d
    . D' A/ d4 h3 q1 h& B4 n
    syncUpdateOrder ();" [$ U" I# |# A" B9 Z: j

* W2 A/ Y$ @/ I8 p    try {
3 C- j, z1 _: E      modelActions.createActionTo$message   F9 H7 X% i  A. a* d  o  P4 ]
        (heat, new Selector (heat.getClass (), "updateLattice", false));
4 i) C( }+ l9 m3 F1 ]: A8 L* c    } catch (Exception e) {' h: u1 Q0 p) Y3 {
      System.err.println("Exception updateLattice: " + e.getMessage ());
* R: z  E' t' n% ^, ]    }* q* K+ ?- A/ D# d2 `. L% K
        & N" U% X7 U2 m3 U. n
    // Then we create a schedule that executes the
) M) Q. l& ~& e" R    // modelActions. modelActions is an ActionGroup, by itself it6 g# |+ D3 _4 g+ B! y% n
    // has no notion of time. In order to have it executed in
1 x  ^& z# F6 m( I' S# ^- @. N- _1 p9 f    // time, we create a Schedule that says to use the
, [! u2 t6 s* z+ K    // modelActions ActionGroup at particular times.  This
0 u" J2 [% |3 c3 j    // schedule has a repeat interval of 1, it will loop every
. h( E7 E! O6 `# ]( A    // time step.  The action is executed at time 0 relative to9 \( {$ ?1 V+ h8 Y
    // the beginning of the loop.
. Y" y$ r0 @& `8 T5 k4 i2 J! u, o; _/ J+ b  D4 b
    // This is a simple schedule, with only one action that is9 Q; j  F9 t" L* C/ x
    // just repeated every time. See jmousetrap for more' C- X# v1 k& t6 V/ J5 O0 J9 s  {
    // complicated schedules.
$ ^5 U% M4 n2 F" r5 g  
8 n$ j; D, {+ L5 _( {: {5 h3 h    modelSchedule = new ScheduleImpl (getZone (), 1);6 h2 e) w3 Q/ ^& ^- @% M/ P
    modelSchedule.at$createAction (0, modelActions);$ ^, \. N4 {+ w6 P' @; X+ D+ k3 N
        
+ l; ~7 q/ O  e2 q    return this;7 U  B2 P* W: b* g2 R, f
  }
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, 2026-7-27 12:51 , Processed in 0.016784 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