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: 10836|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:
& s/ L1 J) J2 @
6 ?4 {. ^9 ^8 [. @7 s( I public Object buildActions () {& _0 o! v! X: P: @* d( Z( p
    super.buildActions();
; R4 P2 w4 \  g4 c$ a      c4 S( S: L8 n8 v" P+ Y  a
    // Create the list of simulation actions. We put these in
- p* M# G0 V6 Y0 q$ d, D    // an action group, because we want these actions to be9 s  h" k2 ^" `
    // executed in a specific order, but these steps should! K( |' d' c* ~- W, V8 [, o; Z+ j1 |' U
    // take no (simulated) time. The M(foo) means "The message
1 }) Y2 T/ ^2 H    // called <foo>". You can send a message To a particular) ]- }% e' {" A) }0 e
    // object, or ForEach object in a collection.
. A8 L2 ~5 W% N& y7 O9 z, I" R        
+ \- o, c8 s0 e. {7 R: b) G, c    // Note we update the heatspace in two phases: first run' c( B6 o0 T( z. f+ s8 o
    // diffusion, then run "updateWorld" to actually enact the
% u8 r. V) O4 e* f2 s    // changes the heatbugs have made. The ordering here is  S' Q1 r/ t( E) h; s3 q
    // significant!; j7 l5 Q7 d) r" F* k8 X* U
        8 x+ m/ e& u# l/ `7 p
    // Note also, that with the additional3 S+ {4 y4 u: R( v
    // `randomizeHeatbugUpdateOrder' Boolean flag we can$ f0 m* s7 y. M+ h) k4 ^" |# G
    // randomize the order in which the bugs actually run% ~- ^% c; e2 S5 L8 @$ ]
    // their step rule.  This has the effect of removing any$ v4 i  Q8 Z7 Q6 ^9 i- i
    // systematic bias in the iteration throught the heatbug* d3 U+ I2 `3 r; X, o' R
    // list from timestep to timestep
( S) J5 V! e$ p9 Z        
2 c6 i3 W6 D8 t+ n, X3 b/ d+ E    // By default, all `createActionForEach' modelActions have
4 c% a( |5 \! k! F/ @. d% u/ I    // a default order of `Sequential', which means that the
( l9 j7 _  ]) A    // order of iteration through the `heatbugList' will be5 w2 e# V2 f3 E0 @
    // identical (assuming the list order is not changed
# t, p3 Z) Y0 Z' p8 |: U3 }7 U    // indirectly by some other process).) f" B0 E) s( {7 `3 U1 s; B5 ~8 C3 R
   
3 B+ R* R# @. K" ~    modelActions = new ActionGroupImpl (getZone ());
9 H0 s. |3 J4 f; v& w" M! f9 ^8 c5 y' w) s$ |3 O) w) x; b8 ~: Z$ Y
    try {
7 ~& |4 B1 W+ D4 j& U      modelActions.createActionTo$message9 R* }6 V1 r1 s" c1 b% O
        (heat, new Selector (heat.getClass (), "stepRule", false));
  [* u; P8 r9 o5 x* a+ {    } catch (Exception e) {  [% i7 `; u. g2 ~* G- ^( H
      System.err.println ("Exception stepRule: " + e.getMessage ());' ^  r# t8 L& s% ~
    }
5 v$ S+ i/ W1 W6 n- R0 s8 P# ]( g
    try {
; _6 w' K9 v$ S$ S      Heatbug proto = (Heatbug) heatbugList.get (0);* r( s! Z8 x5 s8 Z4 f$ }
      Selector sel =
7 }9 Q8 H, O3 M) v  t, U/ D        new Selector (proto.getClass (), "heatbugStep", false);
# B& d  u9 C1 l7 U      actionForEach =0 Y6 E" b4 v  M8 `* N' p
        modelActions.createFActionForEachHomogeneous$call
8 `  X* `6 E& v- C: {        (heatbugList,. b; l  g# c5 E$ Y
         new FCallImpl (this, proto, sel,
# z' U  T  R) b! c6 Y% m& @                        new FArgumentsImpl (this, sel)));& n0 x$ J6 w* @, z7 \
    } catch (Exception e) {
, f# Q: U- X, G& o. y      e.printStackTrace (System.err);, d7 R5 O: J, p' K8 b% E
    }, y$ M7 l9 I  n" R1 \
      p, j" E! a! F# s& J) @0 A4 g
    syncUpdateOrder ();
  s5 V2 v  B/ \9 v, ]# N2 R
* |- n5 u4 e: c. _5 R% @( {1 i' o    try {
6 d0 d& z( i8 u3 R/ d+ H7 o      modelActions.createActionTo$message , y- Q5 J- I# U  L
        (heat, new Selector (heat.getClass (), "updateLattice", false));. r# ?+ p  R6 o  w  n
    } catch (Exception e) {3 b8 J7 {% g/ s* o/ Y; C, J
      System.err.println("Exception updateLattice: " + e.getMessage ());/ k" }/ k2 b3 H
    }
  `% n; f, F/ N6 b: W; w        
+ b8 C) j# X5 U3 a$ y( x7 p7 U    // Then we create a schedule that executes the
' P% s* R5 y1 V8 T5 ?+ D    // modelActions. modelActions is an ActionGroup, by itself it
% C# ~& j9 O$ Z# M. g, b2 O    // has no notion of time. In order to have it executed in
5 b, C  ~5 P9 {( N9 u: x7 q    // time, we create a Schedule that says to use the1 \+ T1 W% V9 F: B* Q/ A
    // modelActions ActionGroup at particular times.  This
9 _! Y! ~$ [& |1 ^7 K5 Z    // schedule has a repeat interval of 1, it will loop every
5 T! |3 j. `6 T/ r) X  G6 a6 i    // time step.  The action is executed at time 0 relative to- t. j7 v' x5 a/ G6 |
    // the beginning of the loop.
; A  S% q+ i2 a" @
* |! g4 J3 X0 J( l' R    // This is a simple schedule, with only one action that is9 e0 q$ g9 ?4 v% G
    // just repeated every time. See jmousetrap for more
0 f/ d! s  Y0 @% f3 u  b1 a, y    // complicated schedules.$ E  j2 C! D- V  e4 T  i$ W
  
+ Y1 C9 _: _" j    modelSchedule = new ScheduleImpl (getZone (), 1);
7 o/ L$ x! \# N* s! T    modelSchedule.at$createAction (0, modelActions);! r' F+ l6 `* F& W/ A  P! U/ C
        . u! }0 J" \5 A5 w
    return this;: V5 w" @5 I& ~
  }
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, 2026-5-22 09:24 , Processed in 0.013607 second(s), 12 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表