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: 8637|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:) Y4 A! r) J* d; R. ?
" H' k7 J& a% w8 O. P+ T
public Object buildActions () {
+ G4 K% Y* `5 h2 l    super.buildActions();( _! N9 X  U. s, h3 G9 y3 g8 i, i2 Z
   
8 o1 B9 }+ q, }) k4 F4 ^0 _# W    // Create the list of simulation actions. We put these in; L2 `+ D; {" x8 t$ m. |4 u: H
    // an action group, because we want these actions to be
9 _# `# J& r( K. S& ~0 {    // executed in a specific order, but these steps should9 A" g" S' y  T3 j% z7 l3 [1 f1 b: a3 [/ m3 S
    // take no (simulated) time. The M(foo) means "The message$ I. j" q/ w5 _' S3 p$ J
    // called <foo>". You can send a message To a particular# N$ i# s5 _% p
    // object, or ForEach object in a collection.
2 t0 Z4 _2 \+ P        
' |3 u9 `& k3 ?: S    // Note we update the heatspace in two phases: first run
* c6 u$ L, i( u. n% u    // diffusion, then run "updateWorld" to actually enact the
. d- e( m7 e: q- X4 ~3 e! a# |    // changes the heatbugs have made. The ordering here is* f& H7 Y7 l3 N% T
    // significant!& Z" v- u4 v# A; H! x
          [) {' L. B4 j+ e
    // Note also, that with the additional7 L# a  V9 u9 J1 H6 h+ n; U, q5 d
    // `randomizeHeatbugUpdateOrder' Boolean flag we can
/ Z+ g0 f. U" ^' Q$ L8 U6 p* i7 H    // randomize the order in which the bugs actually run
5 L0 g" x: m+ {! r% c' x    // their step rule.  This has the effect of removing any% J- z) q! f! `8 F1 z
    // systematic bias in the iteration throught the heatbug
( T/ Q: A: c3 @6 s$ ^' E9 m    // list from timestep to timestep8 j* V; K# B( A4 A: l
        2 A, ]) J- N0 [1 f) q
    // By default, all `createActionForEach' modelActions have
) B. [. {. o2 _" m3 Y- v4 m0 ?: p, m    // a default order of `Sequential', which means that the) Y: A: D6 d+ G
    // order of iteration through the `heatbugList' will be
7 @# i  Y6 X  J7 W: b8 r    // identical (assuming the list order is not changed, }( a6 N6 R' B- C  V0 M
    // indirectly by some other process).
+ K, C$ _5 X# k6 S   
! i/ r* w9 z7 }+ j6 B" K6 P/ W    modelActions = new ActionGroupImpl (getZone ());
4 \9 D8 o; |; C1 B' J) \. y8 O; q- ^% K
    try {' R# N; M0 R$ k0 x" j( x
      modelActions.createActionTo$message
3 O+ r5 \" r* k! W1 f% J7 }4 q        (heat, new Selector (heat.getClass (), "stepRule", false));
4 k; M; x4 ?  ~7 K: f* [    } catch (Exception e) {
, C! `0 e2 B! H( g$ Y% B! j8 R# V      System.err.println ("Exception stepRule: " + e.getMessage ());
& D0 N8 N0 ^# X- a+ k# b    }! y) G3 ]1 C2 D

% I: N/ O. f2 k5 f    try {
4 J; i/ h9 S( B: v" |" {* A& d      Heatbug proto = (Heatbug) heatbugList.get (0);0 `, S  k$ I; K" L7 I
      Selector sel =
. t9 a, K6 s: Q( g. Y        new Selector (proto.getClass (), "heatbugStep", false);* v" m) v( i& ]- F! S& s  P
      actionForEach =
  N+ Y! l4 Z6 A( Q7 \  }. U. k        modelActions.createFActionForEachHomogeneous$call; I- ]$ J7 u' p
        (heatbugList,0 M6 d5 k$ L8 I; f: K
         new FCallImpl (this, proto, sel,6 E; t) O. K2 J+ s2 `
                        new FArgumentsImpl (this, sel)));2 r1 i( Q/ O1 P. o$ l2 v5 e
    } catch (Exception e) {( _/ r6 e; W+ c+ V& Z( y/ M
      e.printStackTrace (System.err);' B1 V3 [+ F- D
    }, t/ K& o* O. ]( p9 N! [. |* o5 X% I
    3 ^1 N) \1 ~5 M) F! n
    syncUpdateOrder ();2 l2 G% g" R" f2 ?- x% Q" ~$ H
. z8 }9 W+ V, d) N
    try {7 g" Q2 M% S) Z- _/ s
      modelActions.createActionTo$message / |1 O  W8 W0 ]
        (heat, new Selector (heat.getClass (), "updateLattice", false));
4 I* V; C- F" _) C" ~& F* l2 E    } catch (Exception e) {
8 \" O& ^' n9 o      System.err.println("Exception updateLattice: " + e.getMessage ());
7 v) E" p9 n( x/ d( o  ]    }* Z' p$ V3 a5 t5 z
        % c# g0 U/ @$ B4 E  R
    // Then we create a schedule that executes the
( }, F5 P" ~$ e0 ?( p    // modelActions. modelActions is an ActionGroup, by itself it
3 S7 q% h: a7 X. c8 K/ ]    // has no notion of time. In order to have it executed in; }# f  e7 ]- M! B0 U, C5 e
    // time, we create a Schedule that says to use the
; B! r$ Y* ]2 A' A    // modelActions ActionGroup at particular times.  This
$ h# d- }8 L0 o. v+ N% \9 {+ f% O    // schedule has a repeat interval of 1, it will loop every; X: F& [' M8 T4 y
    // time step.  The action is executed at time 0 relative to0 k3 h0 z+ D3 T$ a* X
    // the beginning of the loop.. x* b$ b% V2 M7 h1 w. _7 E5 {

4 `# D( y2 a  {- m9 `" K" y6 [* k1 ?    // This is a simple schedule, with only one action that is
7 G' b* Q' q+ x1 I    // just repeated every time. See jmousetrap for more% n- I, k7 N4 P0 i0 N
    // complicated schedules.
& P; R% q% l: A  0 S% K* d: g3 \& a
    modelSchedule = new ScheduleImpl (getZone (), 1);5 m0 |" a3 m% q
    modelSchedule.at$createAction (0, modelActions);
6 A) S2 @7 z1 p" o; g        
( Q# D9 `( r1 l9 i  V2 Y. e    return this;  p1 p- |: d: w! g# t
  }
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, 2026-1-19 16:00 , Processed in 0.026744 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