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: 9854|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( i- f$ }$ a1 w
. Y, X3 r6 H+ }0 h+ w public Object buildActions () {
5 X: z7 l& E( c    super.buildActions();
2 P! ]3 o, N0 V8 U   
9 ?' C* T8 Z$ [9 r1 a/ E    // Create the list of simulation actions. We put these in
; ^0 R6 W6 N8 w# d6 C# B- B' b    // an action group, because we want these actions to be4 w! N; C' f4 l. a) _; X1 \/ b, A
    // executed in a specific order, but these steps should
% r" Y% G, ~" }1 T* M; j. K    // take no (simulated) time. The M(foo) means "The message
2 u% k& p/ s& r3 S) p. {# B    // called <foo>". You can send a message To a particular
/ j' [; C8 A) D6 _    // object, or ForEach object in a collection.0 Z* N: L7 W* t2 J% q; Z5 F- v
        
0 s; J2 \4 Z7 Y: L+ o    // Note we update the heatspace in two phases: first run, s1 r' w( n5 H/ v, B* u+ V
    // diffusion, then run "updateWorld" to actually enact the
( a  D& b/ d% r' N( K7 x    // changes the heatbugs have made. The ordering here is
6 K- s6 i, o! x2 p    // significant!
# s; N4 d) X2 a6 I        + f8 e( a7 D; M# h$ F
    // Note also, that with the additional
8 w: ]0 l0 G3 e5 t- S3 C# C% g    // `randomizeHeatbugUpdateOrder' Boolean flag we can1 h) x$ T. q. Z  s3 e
    // randomize the order in which the bugs actually run4 K9 W6 X) C+ x
    // their step rule.  This has the effect of removing any. X; o. M$ }2 k& V  d. O# d
    // systematic bias in the iteration throught the heatbug
0 z) l2 Q& o' u+ D    // list from timestep to timestep" S9 t! p% [. I; b& P0 Y; ^; n
        
8 j, d7 \- w3 V3 I% g' C4 @    // By default, all `createActionForEach' modelActions have
- n1 }; ?$ b) k; l4 D/ ^    // a default order of `Sequential', which means that the
; }, d" V' ?2 Y, M. k    // order of iteration through the `heatbugList' will be1 m; O, N; l. ~) n7 {
    // identical (assuming the list order is not changed$ g1 s) Q; b/ ^. l! Q
    // indirectly by some other process).% Z, n0 x; `& R
    & w. b- ]. b% j6 U0 }1 l0 K7 M
    modelActions = new ActionGroupImpl (getZone ());
% _# Q, {# a* T+ \: K2 _
) f0 S8 J: h. ]$ ]    try {
: }$ Y) o) ?2 U: \      modelActions.createActionTo$message
, J1 A4 `& Q. S        (heat, new Selector (heat.getClass (), "stepRule", false));" n! X. w3 v8 ~, ]& W
    } catch (Exception e) {
4 i$ J! f3 q( m; Y      System.err.println ("Exception stepRule: " + e.getMessage ());
. U) P& k& w' r# s0 Y5 o    }& W, f* v+ h' g  q) q, ]) L  \- ]
  @4 m. I" c& z* h! B
    try {0 [$ e! z9 W, w2 ~# \! \1 Q: F
      Heatbug proto = (Heatbug) heatbugList.get (0);
1 L& H8 c, d+ }. H      Selector sel = # p& r0 F6 [: Z8 N& Q
        new Selector (proto.getClass (), "heatbugStep", false);- l: K/ k8 {* T$ e% E- I
      actionForEach =
4 ?6 p2 f& @) G' k! r: c5 J" K( d        modelActions.createFActionForEachHomogeneous$call: P1 C5 h. q2 V' g* W; H/ x& ^3 e
        (heatbugList,. z8 R8 h# [0 x& K
         new FCallImpl (this, proto, sel,& J7 p/ V8 N3 b
                        new FArgumentsImpl (this, sel)));8 A: l, Y5 `( U0 k* g: S: N
    } catch (Exception e) {
6 s2 a5 M5 K/ ^1 G, ^6 C& D      e.printStackTrace (System.err);5 s% A+ S! I. C/ m% K) f* V
    }
' a/ G( F6 l/ {; ^    5 i7 Q, K) Q  f) @
    syncUpdateOrder ();$ l8 a1 m% ]5 f  W

1 j7 v8 _# X3 w4 Z2 N    try {) z8 K- B* _& D/ k0 H
      modelActions.createActionTo$message
" R: P4 [# |8 f) v        (heat, new Selector (heat.getClass (), "updateLattice", false));
" \+ r& F6 h6 Z    } catch (Exception e) {
" d8 w7 h! u1 G5 v8 y' b2 u4 a4 @      System.err.println("Exception updateLattice: " + e.getMessage ());: c9 c* Z) `2 E7 c  w# |# u
    }, w# m0 Y' w( s$ W, s6 B- w! b' j
        
1 U6 f  u9 U% \    // Then we create a schedule that executes the3 ?% {& N8 r1 X2 _% f4 p- B
    // modelActions. modelActions is an ActionGroup, by itself it3 D. y  A  a+ z6 x
    // has no notion of time. In order to have it executed in8 k- Y2 O: G- M
    // time, we create a Schedule that says to use the7 T0 ~+ Y( Z; U- e! a% m( `
    // modelActions ActionGroup at particular times.  This
5 e( h# M! q2 O    // schedule has a repeat interval of 1, it will loop every
/ o% G9 H$ A1 L( c$ B    // time step.  The action is executed at time 0 relative to
. \3 y: [6 k4 @0 [, l    // the beginning of the loop.
( t* y" Z0 P& l) ^4 p! K' ^$ H
# {" I# m# R, ~, W    // This is a simple schedule, with only one action that is
1 F8 X+ b4 q  |. ]* N' _    // just repeated every time. See jmousetrap for more
+ W) {. d( l' E9 z9 m    // complicated schedules.
+ u7 r% Y' ?% b; V/ t' g5 A$ ]  , _" G. K# U2 O! J
    modelSchedule = new ScheduleImpl (getZone (), 1);+ r6 k% }5 A$ x
    modelSchedule.at$createAction (0, modelActions);7 V5 o! H  f- b: x
        
( {* g: x8 t  i( Y( k! Z6 ~    return this;
- [9 w! W( |4 _* w# \/ z0 r  }
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, 2026-3-29 18:04 , Processed in 0.015064 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