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: 8789|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:* W" r* c0 {. @
& k4 p9 n2 k( _5 z4 k  q$ I
public Object buildActions () {  }: A2 a& z- U
    super.buildActions();
* |5 I* N- D9 X7 u6 {, W: m   
6 w, f) m4 J: l0 s6 c    // Create the list of simulation actions. We put these in- K2 n. l/ m2 k0 X2 P4 i1 n5 I2 m" l
    // an action group, because we want these actions to be3 H; C1 |9 x+ O2 l
    // executed in a specific order, but these steps should
4 ^( g% w4 F* F" h, ~- C; i: t    // take no (simulated) time. The M(foo) means "The message
+ H# u- i% z8 |+ y1 S' j    // called <foo>". You can send a message To a particular
* Y1 V3 u/ @$ R& z: }, O8 t; ]/ f    // object, or ForEach object in a collection.
% v! c8 n; m! @( |. ^+ E+ e        $ b+ a& I+ ?' x6 j
    // Note we update the heatspace in two phases: first run  N! ?1 r" F: w) Y" x, U7 O; ]! Y! z
    // diffusion, then run "updateWorld" to actually enact the2 d, I# _4 n! o
    // changes the heatbugs have made. The ordering here is6 u5 a' t3 H3 I" y6 o& i) I
    // significant!
' y5 r3 `0 O2 o* `: u3 w( U        
' x1 J8 Y2 p" N* F; _    // Note also, that with the additional; _* e( q8 Y  D' ^# P7 h
    // `randomizeHeatbugUpdateOrder' Boolean flag we can
3 I% _7 A3 }6 e' F6 E    // randomize the order in which the bugs actually run: H6 W. C2 e4 `. w4 |1 c
    // their step rule.  This has the effect of removing any0 s" U9 J8 }: D; r# |. [
    // systematic bias in the iteration throught the heatbug9 r7 X6 S- s: v. D9 K2 [, p
    // list from timestep to timestep/ b' t( s4 f7 a
        2 v% A5 `0 U( g# I' a4 G" o
    // By default, all `createActionForEach' modelActions have
, \" a- a8 z# r( P  I" G8 s# p    // a default order of `Sequential', which means that the
! s/ Y5 J* O$ u2 r" Y5 S+ z    // order of iteration through the `heatbugList' will be
9 @* e1 K5 W  C    // identical (assuming the list order is not changed
0 b2 Q% n* ^* K% W3 I% U# K    // indirectly by some other process).* Z* A/ ^' _% E' Y$ Z
    ( w( H- i  A: l: K6 X
    modelActions = new ActionGroupImpl (getZone ());) M! G) W' X2 q# _
: I7 E9 _! ^/ ?
    try {; ~1 X. p7 q. B! V( `- J5 E$ b
      modelActions.createActionTo$message
' D/ `. e( r  e# w! r: g* T- t        (heat, new Selector (heat.getClass (), "stepRule", false));/ C* H) `; n+ x# }
    } catch (Exception e) {1 ]' N6 f; L6 Q' o: u
      System.err.println ("Exception stepRule: " + e.getMessage ());- E$ N# ]7 n, N2 C+ L" S
    }) h( x* j; l, Q# g! J: I
  O5 c+ G  @1 {0 Y
    try {% C- j& R' W- P* k- ]( T9 k( w
      Heatbug proto = (Heatbug) heatbugList.get (0);! M0 U, U. O2 I. f0 [
      Selector sel = 5 G( N6 f5 H1 w/ D7 v( _9 m
        new Selector (proto.getClass (), "heatbugStep", false);, ?7 w  }+ q8 e' d( Z7 l* p8 u
      actionForEach =
6 @( t5 H$ W" f# e        modelActions.createFActionForEachHomogeneous$call
+ f! v( |- R5 g' `: i+ v$ a: w& S4 J        (heatbugList,9 p' L+ J6 J2 N% M; ~. F' v
         new FCallImpl (this, proto, sel,& \. a, x* Z! x) f8 A2 P
                        new FArgumentsImpl (this, sel)));
6 D" a4 \) `  ]3 E    } catch (Exception e) {
2 \/ ]  n* E+ v2 w" b      e.printStackTrace (System.err);
5 D9 W, {) K7 z: q    }* _% E- `: L; a7 S7 A# x
   
! R( i4 W# @# p- @    syncUpdateOrder ();
9 Q7 v0 h' |' c- J1 w* i1 z/ L8 M7 Q8 k' C5 ~  {  q
    try {4 W; Y4 Q) t4 u0 `
      modelActions.createActionTo$message ! w' E! M$ g; u' n# h! D
        (heat, new Selector (heat.getClass (), "updateLattice", false));$ ~7 h5 w( g- e  }( h; j! \
    } catch (Exception e) {3 u8 _9 I/ ]& k; e
      System.err.println("Exception updateLattice: " + e.getMessage ());
5 L" X- _2 h; v& a: a) b1 O    }
0 t5 p# F* O4 h" W7 p" X8 B* w$ F) N        + q! d* c& T  S! H) T0 e
    // Then we create a schedule that executes the- [. K& {* X  k5 p' B: Q
    // modelActions. modelActions is an ActionGroup, by itself it
8 r6 ~. L" i! B8 s& x    // has no notion of time. In order to have it executed in
0 R0 b0 `" Q$ C6 E5 C    // time, we create a Schedule that says to use the0 b, @4 _; V6 a' |
    // modelActions ActionGroup at particular times.  This
; w1 \/ p- }2 T3 T0 Q/ l    // schedule has a repeat interval of 1, it will loop every
4 [: d- q% \5 z# k8 b/ t% j% ?    // time step.  The action is executed at time 0 relative to
0 e6 U% X7 E5 S* W& y    // the beginning of the loop." q+ j! m$ J1 w# L% z; y. i
/ o& c7 L. w" k
    // This is a simple schedule, with only one action that is
/ g- }* S# k7 Y7 O0 j    // just repeated every time. See jmousetrap for more: D. v+ M, ^: _' f& t5 D6 O
    // complicated schedules.- e! s' c( h# s7 d' M$ @
  
# Y: I1 |- }: N  t/ L" ?4 g    modelSchedule = new ScheduleImpl (getZone (), 1);
3 l4 r- s/ d  w% k  ]$ |$ |! V6 Y    modelSchedule.at$createAction (0, modelActions);! Q8 f7 o; ?% g
        
, ]$ B) Y6 X( ~    return this;
0 P$ {: x7 S( 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, 2026-1-27 09:53 , Processed in 0.020765 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