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: 9043|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:
# g6 u! q  Z; ?9 b* x# ?- X9 v. U: I, j1 K3 ^  @8 A
public Object buildActions () {  v$ E# o; @& o; O2 ~1 T
    super.buildActions();
2 M. N' t3 O4 y! L3 y! Y7 [4 `/ P   
  b3 G  w4 ?4 o. P2 u    // Create the list of simulation actions. We put these in
' s1 c! T6 c+ E& {    // an action group, because we want these actions to be: Q! X  w( r+ d9 C9 p
    // executed in a specific order, but these steps should
# h$ l1 l1 M8 y$ u3 O3 f; ?/ V) B  e0 k    // take no (simulated) time. The M(foo) means "The message+ n0 ~* _  g, t: Y0 i. d, p
    // called <foo>". You can send a message To a particular
3 s( X+ w& b7 W2 z9 @    // object, or ForEach object in a collection., J6 u0 E. u2 G( G% ?
        5 ?1 O5 @, H0 P2 g0 I6 }6 {
    // Note we update the heatspace in two phases: first run0 P& L3 N* w& ?2 B
    // diffusion, then run "updateWorld" to actually enact the8 I  A( m7 Z* B" r. L
    // changes the heatbugs have made. The ordering here is
( n1 i9 H( n& t, t: |    // significant!& K; O9 w8 ~$ ^! j  ~
        , T/ u) U. o) t! I
    // Note also, that with the additional9 K0 K: ~& q8 w5 J- L1 |
    // `randomizeHeatbugUpdateOrder' Boolean flag we can
$ y9 q  u$ D1 \# V7 Z    // randomize the order in which the bugs actually run
1 T1 t% t1 m6 W1 ^. Z' P    // their step rule.  This has the effect of removing any" v1 s1 f# I! Y5 e8 o+ ^* q
    // systematic bias in the iteration throught the heatbug
5 f9 t: P1 [+ Z" }4 ?    // list from timestep to timestep0 \' S$ ]: I8 Z, \  }
        
% F( j. ~) X) c5 p) a3 A8 J. D  c    // By default, all `createActionForEach' modelActions have' q/ c( Y9 c5 N: D" c2 w3 o/ K$ u' e
    // a default order of `Sequential', which means that the$ x$ G, b  {6 b5 K$ @5 ^
    // order of iteration through the `heatbugList' will be
% b% D$ |7 Y. m) z. \, u3 D    // identical (assuming the list order is not changed
# P8 W6 g6 ?) b( m; F! E6 ?    // indirectly by some other process)./ |( ^* ?! @8 m: T
    : w' D) h$ M2 g5 ^  G( f
    modelActions = new ActionGroupImpl (getZone ());
. L7 y* R( H3 ~: W* X% _/ L4 U7 g% X8 `
    try {
' J2 Q, H8 C5 l) I1 _4 w0 x      modelActions.createActionTo$message
3 I" d) X+ s* q/ ~, u* M        (heat, new Selector (heat.getClass (), "stepRule", false));, y0 z0 k; h1 V
    } catch (Exception e) {
! q) L$ L' v% u7 c1 E' L6 X1 y      System.err.println ("Exception stepRule: " + e.getMessage ());
5 {1 C* ~( j# p$ V$ Y    }5 N; |( r& W; ^. q' {' a. B' ~% `
4 S* C* h* e3 {# K# k- T
    try {
  z$ \- d! F; s, s8 Q" {: l      Heatbug proto = (Heatbug) heatbugList.get (0);
, }1 |- w0 g# Q9 Y: }      Selector sel =
" a( {# q! e+ J7 C        new Selector (proto.getClass (), "heatbugStep", false);
6 ^; M( K, H3 n      actionForEach =: i0 _1 U  d# W" G
        modelActions.createFActionForEachHomogeneous$call! f8 [1 A- @- z+ j( C
        (heatbugList,2 o0 n+ Y6 F0 h" z8 j4 n
         new FCallImpl (this, proto, sel,
0 A+ u4 @; @% N' l% O' W& f                        new FArgumentsImpl (this, sel)));  a) f* o  ]0 I; p- r& {. T
    } catch (Exception e) {4 m0 [& z# s1 Q& ~& T2 J" A6 C
      e.printStackTrace (System.err);
3 V, b% V$ ~9 U' M, R. `    }+ V7 n' @. ?8 g6 ]% S7 a
   
3 r0 X# H1 w2 u" I    syncUpdateOrder ();
: Z% s8 I/ b# d, t3 v' i
5 j" Q$ S: |* ^4 k! `    try {% R1 @, O7 Y+ r- I# l
      modelActions.createActionTo$message
, E, f7 X0 x: M( `. P/ _        (heat, new Selector (heat.getClass (), "updateLattice", false));
2 f$ f9 r4 w4 S6 s0 f/ i    } catch (Exception e) {
3 w8 ^' S6 H6 \2 ^$ ~& r! D: Y& J      System.err.println("Exception updateLattice: " + e.getMessage ());: \6 J# p* o( x# f7 N% Q
    }
( g) [3 m) o) {        
3 R$ @  k& ~- J5 E- y    // Then we create a schedule that executes the* `' n% \( r+ z/ _: Z
    // modelActions. modelActions is an ActionGroup, by itself it4 I6 X1 I' e+ y5 C( M$ h/ h
    // has no notion of time. In order to have it executed in
! h3 R! l: G; t) f7 Z    // time, we create a Schedule that says to use the
; [* Z; g! T2 Z, c* b! T    // modelActions ActionGroup at particular times.  This# X# Y' ?' n; _
    // schedule has a repeat interval of 1, it will loop every
0 h1 d6 n5 w6 m; d    // time step.  The action is executed at time 0 relative to
: a/ V' O% Y8 y    // the beginning of the loop.
7 F& J+ t8 R) M1 c+ m& D1 F: F8 R5 {1 s
+ ]( y9 b5 E+ K: P    // This is a simple schedule, with only one action that is, y% B& @! Z+ d( N$ C9 B% O
    // just repeated every time. See jmousetrap for more
$ F5 m8 E) A5 f# N: G5 j. F    // complicated schedules." a  z* I% Y4 K3 I/ x( ~
  
6 r' u. A; r  }+ B) m( m    modelSchedule = new ScheduleImpl (getZone (), 1);1 b; ^- }5 g7 r% g
    modelSchedule.at$createAction (0, modelActions);1 ?/ ]4 ?/ G( s1 _1 s7 i& h6 D3 f
        
! R; d/ P& F' D1 v& g4 p1 u    return this;6 C. Y5 z4 {# H3 J$ 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, 2026-2-9 08:43 , Processed in 0.014262 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