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: 12592|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:
* ?/ X0 P, c2 A5 {( g$ x: [2 `9 ?8 ^8 P0 m8 [% C
public Object buildActions () {
: z$ C: }* P$ z* ~0 D( P) u    super.buildActions();  |1 P2 K) z/ ^! m
   
2 W  J, w5 G& i8 g    // Create the list of simulation actions. We put these in
+ g; H2 o( G# s" G- n    // an action group, because we want these actions to be2 j1 O8 c7 ]: g
    // executed in a specific order, but these steps should) D2 ~* u  ?" b8 r- J$ F- Z2 |  t
    // take no (simulated) time. The M(foo) means "The message& u" }( }+ y# s/ b
    // called <foo>". You can send a message To a particular, V# c4 I% F4 u, ]9 m% @0 ]9 [
    // object, or ForEach object in a collection.( J1 K. v6 \) L2 [# @0 e
        
0 g* E/ q2 C7 w  N3 [    // Note we update the heatspace in two phases: first run% a9 E6 b7 u$ Z& e, g0 g% y/ u
    // diffusion, then run "updateWorld" to actually enact the. I. a2 D) A9 O/ k1 z7 e) L7 ]! E. l( K
    // changes the heatbugs have made. The ordering here is, K4 I. Z8 d- B) o2 }, n  W: H$ C
    // significant!  |2 @3 o# b0 B( l/ [
        
+ H! M/ Z$ w6 M8 a* m( `' @8 j; C    // Note also, that with the additional) @0 ]0 d5 t, [- k9 F, L" b% ~! e
    // `randomizeHeatbugUpdateOrder' Boolean flag we can
- p8 \) D. z3 V( {    // randomize the order in which the bugs actually run
* m; p/ h  N0 W- H+ _/ U    // their step rule.  This has the effect of removing any! D9 t/ o& C5 z6 _; v# f- d5 I
    // systematic bias in the iteration throught the heatbug. U- \( j7 n2 |' t$ E  K1 `
    // list from timestep to timestep3 p8 N7 ?  Y9 U5 [
        $ B7 {+ g$ R% j, r: G
    // By default, all `createActionForEach' modelActions have
; V: d& R% T4 r# Y! ~    // a default order of `Sequential', which means that the8 \, g$ ^$ Z/ h; M
    // order of iteration through the `heatbugList' will be
) y- X$ v$ F$ [& _# N9 T, j: O- x    // identical (assuming the list order is not changed8 P# Z- C+ ?9 L$ U
    // indirectly by some other process).
/ e! O0 B7 B$ i  N: k& F/ w, _6 g   
! e# B+ v; y; ~0 p    modelActions = new ActionGroupImpl (getZone ());
: _6 Y7 e5 S5 H* p; ]/ [7 L7 x9 {! V7 W
' p+ o( [( A' t# X    try {
$ C  Q( Y; O( o      modelActions.createActionTo$message
8 n# s( L. Y( |+ H. v) R: G        (heat, new Selector (heat.getClass (), "stepRule", false));! ?$ ]+ H. {  K* H+ m5 Z0 j, u
    } catch (Exception e) {# Y& ^' w8 X: o7 f& w# {1 d5 V6 L
      System.err.println ("Exception stepRule: " + e.getMessage ());  U8 X9 s0 w% K; V# N* [
    }
+ M. V) B; ]8 R9 ?! @1 `
! R4 {2 u2 C* _5 m& e! r  ]' Z  ~    try {
' |1 b2 x; V& ~$ O9 L% ]: m) o      Heatbug proto = (Heatbug) heatbugList.get (0);
2 Y1 `6 b) s! V  H! w8 h      Selector sel =
  p5 X/ J/ w7 E- _! J        new Selector (proto.getClass (), "heatbugStep", false);% O% P2 \2 x! d$ _) ]4 U0 i
      actionForEach =9 n; q% ?7 H- X. X9 S
        modelActions.createFActionForEachHomogeneous$call! \( F9 d- q  {1 `5 i+ z
        (heatbugList,
& O: @3 y2 q' ]- G. G/ S         new FCallImpl (this, proto, sel,
/ k2 I7 P- V# b( p  q8 _8 S4 E: a1 t                        new FArgumentsImpl (this, sel)));, D( r3 v3 B+ G% f' U7 X! r
    } catch (Exception e) {6 Z9 w* v+ V0 z2 ]- c/ H
      e.printStackTrace (System.err);$ s  M; E1 `5 b$ L; i; V
    }
* v( E* @7 _; Z* v  l6 V/ @* G    ; }: x! n2 H  A, v8 E" C6 d. A
    syncUpdateOrder ();6 A" C1 b. n& }

% k( h& g! k( G2 @% L' h    try {
1 C5 w. x, l& w' Z' u      modelActions.createActionTo$message " y% l4 |4 w  Q) g& J
        (heat, new Selector (heat.getClass (), "updateLattice", false));: j/ D# ?( ^- H' y9 i  S  z
    } catch (Exception e) {
. l+ `. M& i: z5 r1 d: }      System.err.println("Exception updateLattice: " + e.getMessage ());
& y+ ^- \% Z+ q1 A3 p. w    }
  \; B" ^3 O) y  ~) N; r$ y        / A  @* ?3 P" ^% l2 l4 L4 V; g, k( Q
    // Then we create a schedule that executes the4 s7 s/ l- U4 d7 j& l! W
    // modelActions. modelActions is an ActionGroup, by itself it+ o0 H" {8 t, W* E
    // has no notion of time. In order to have it executed in
  ?9 g. u$ D* i' J. y    // time, we create a Schedule that says to use the
7 d: J! r) x( J0 R/ i! ~; r* J    // modelActions ActionGroup at particular times.  This
0 t4 Q, O" k8 U1 k& \9 o  M1 C9 H5 x    // schedule has a repeat interval of 1, it will loop every
+ m# |! J# k! P0 Y    // time step.  The action is executed at time 0 relative to
$ |, J% M) ?+ @. U    // the beginning of the loop.0 p, J3 V8 N- Z' o1 S6 s

7 ]; c/ T7 Q3 ?4 T+ `( K    // This is a simple schedule, with only one action that is8 @3 y* ~, S2 v2 P) M
    // just repeated every time. See jmousetrap for more
3 P" d) |+ k/ k    // complicated schedules.2 b( b! H! U0 ~! \
  
3 f7 y2 f# d" K0 o, {3 I    modelSchedule = new ScheduleImpl (getZone (), 1);
: F/ u1 T8 C, R; _    modelSchedule.at$createAction (0, modelActions);7 v6 p% {9 v- P
        : T) @  p9 c' ]. F, D$ k, t6 \
    return this;/ V" O2 z# X1 n
  }
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, 2026-9-10 11:35 , Processed in 0.012183 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