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: 12712|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:" M! M! k8 I. y; O( D
" G6 X( L% o2 u
public Object buildActions () {6 w  {" g; A( l4 G) l) \+ [
    super.buildActions();
# ]% D+ ]" V) s9 c" _( L    - J. i/ k9 d5 {$ }5 f
    // Create the list of simulation actions. We put these in/ N. L( f- B+ V
    // an action group, because we want these actions to be
) Y* z# s. ~+ i: t2 C+ b    // executed in a specific order, but these steps should
3 r6 h4 C# a/ d4 t$ }0 S" l7 j8 k    // take no (simulated) time. The M(foo) means "The message
/ S) \) ^8 U1 n: J3 z/ E( e. }    // called <foo>". You can send a message To a particular
- }1 r7 u4 E% e9 w/ X7 Q7 }0 J    // object, or ForEach object in a collection.
$ p* a& i0 E, L  X: P7 K        
( P4 t6 e3 A* |5 z    // Note we update the heatspace in two phases: first run1 {( h, d; h; n
    // diffusion, then run "updateWorld" to actually enact the: C" T7 M# x. H  M$ Z3 N6 p& @1 d
    // changes the heatbugs have made. The ordering here is
9 H/ X0 {5 N# j" f8 n    // significant!0 t- s! d! c; [' w; \/ _5 F* M
        9 u4 d& i" M4 z
    // Note also, that with the additional
: u4 V4 d) R8 |4 y3 T! E& f    // `randomizeHeatbugUpdateOrder' Boolean flag we can
* A. o" [+ e+ O% Q    // randomize the order in which the bugs actually run3 ^  ~/ b/ P$ z1 S3 ]; c' J
    // their step rule.  This has the effect of removing any! \' A8 I$ y) j, z5 o3 T7 v
    // systematic bias in the iteration throught the heatbug; i7 ]$ T5 `% @% p' X% M+ I& b
    // list from timestep to timestep
$ y" W; A$ z8 o3 q; x  T        
3 c1 r9 a( v6 R% }& |    // By default, all `createActionForEach' modelActions have& ]$ @6 o$ }) }$ ?
    // a default order of `Sequential', which means that the
; J/ s, u1 D/ I  c4 @    // order of iteration through the `heatbugList' will be- p5 D. x+ F6 q7 U8 P& c9 K
    // identical (assuming the list order is not changed
, X- x% n- x5 P$ J" T' ^) t    // indirectly by some other process).8 ]; ~" {0 j/ W
   
% e7 g: o  {+ r  G9 B, t4 k    modelActions = new ActionGroupImpl (getZone ());
! `4 d5 s. y5 ~0 L! X
) [0 B# ]( L2 g9 m0 ~: z! ^; F    try {
% c. g2 G  T% j! [4 [' S      modelActions.createActionTo$message
! p) W& E( O. l0 |0 A) j        (heat, new Selector (heat.getClass (), "stepRule", false));
: E6 f. o4 q  b: w    } catch (Exception e) {8 K" B% q! b- i* v( O' N
      System.err.println ("Exception stepRule: " + e.getMessage ());
! L8 X! e: @4 A' h$ b; u    }
9 T) F, o' o$ N0 G1 j" w9 I' h6 p% W
    try {
! Z9 R' M* v( l" O+ n      Heatbug proto = (Heatbug) heatbugList.get (0);# ]4 D+ n3 G; U8 k
      Selector sel =
3 v/ h1 g) K; D( `  I9 t( M3 x        new Selector (proto.getClass (), "heatbugStep", false);- {4 `0 }5 g) g& k* D9 `
      actionForEach =
9 Y" S2 k" n9 }, [6 y        modelActions.createFActionForEachHomogeneous$call
$ t7 z8 R$ Q* @3 \  s        (heatbugList,5 S: X: F# w, Y7 I9 M3 G
         new FCallImpl (this, proto, sel,
2 O2 g6 K: g, [" i0 Q; B+ D' D                        new FArgumentsImpl (this, sel)));$ [* v6 a. e6 l6 _$ w5 v
    } catch (Exception e) {" W, J0 d# k# E. l/ n
      e.printStackTrace (System.err);
! z$ X. j- k: {6 e4 t5 m# \    }" @+ O0 b' b. U$ v: I
   
! }/ _- \, E0 z2 L) u/ F    syncUpdateOrder ();9 Q5 q+ ~! Q9 B/ F! y! a! c

8 f7 c& _/ o, Y" N! F2 |    try {
2 Y. o9 p1 d# o; `# y% i7 u/ y      modelActions.createActionTo$message / x! F+ Y  N! @! N
        (heat, new Selector (heat.getClass (), "updateLattice", false));
7 c- D0 J+ I1 H+ P    } catch (Exception e) {
! T8 T' ~, j# B) [9 }4 _4 u      System.err.println("Exception updateLattice: " + e.getMessage ());  C1 V% |4 R0 n7 U4 z& `/ t
    }
% q: P8 q0 f/ c1 V+ b        
3 E, e, O1 c3 K, w    // Then we create a schedule that executes the) g2 N4 s& k6 c/ ~
    // modelActions. modelActions is an ActionGroup, by itself it
3 b; S' g" H8 A+ ?$ {    // has no notion of time. In order to have it executed in" W- L" c7 G3 }5 Y; ]( t
    // time, we create a Schedule that says to use the
# Q$ }# ^3 j. s    // modelActions ActionGroup at particular times.  This
* ^# ~  m) R; Y" p    // schedule has a repeat interval of 1, it will loop every
( c5 i. e$ s- @% g& S6 H    // time step.  The action is executed at time 0 relative to1 S, T  G; I# ]; `- I% t
    // the beginning of the loop., w- w% [/ F2 i6 I6 m6 x

/ C& T% Q" O' r# Q    // This is a simple schedule, with only one action that is; y) C, j  N- |  e& m$ d/ C; {! M
    // just repeated every time. See jmousetrap for more7 ~3 }6 U$ x% {4 `* ~
    // complicated schedules.' `! b' J& q# A8 x
  : N2 ~/ C# l& L
    modelSchedule = new ScheduleImpl (getZone (), 1);7 O$ d; n) Y) v" g( X& Z# R9 O
    modelSchedule.at$createAction (0, modelActions);  ^4 @, O+ l1 T0 v9 s2 L9 L
        
( x5 z" G, I/ V5 a8 n    return this;- J" Z0 f+ k5 g6 y
  }
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, 2026-9-18 09:51 , Processed in 0.017371 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