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: 10002|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:$ S9 T  b1 G! m5 S7 |; g; x

0 e; C; \6 I; K6 N% A- _ public Object buildActions () {* U0 K: i- V0 E4 c
    super.buildActions();6 e: Q' Z# p! D, F, U8 Z# E
    9 J8 T2 K! J& @! h
    // Create the list of simulation actions. We put these in0 C0 @  Y7 j, u: l/ I
    // an action group, because we want these actions to be
3 }  Y; Y: J9 s7 s% c: c    // executed in a specific order, but these steps should
- }1 a) Z5 b! ]3 `1 l, B5 o    // take no (simulated) time. The M(foo) means "The message5 Y7 }& W. x3 y9 D  ]! ~! `
    // called <foo>". You can send a message To a particular
0 I) ~) m, J$ @* c8 @! Q    // object, or ForEach object in a collection.
/ V9 S& i, @+ n8 s% \        + S; a' M& i' o$ u; p9 |
    // Note we update the heatspace in two phases: first run
7 S3 u+ R5 Z4 \- Z8 e  |4 j    // diffusion, then run "updateWorld" to actually enact the; I" K1 T' v3 x+ U( m) S
    // changes the heatbugs have made. The ordering here is
" u, G3 m( D4 @    // significant!
/ v1 R8 Q: o/ g& m0 y/ Y. F        ! W7 m1 }$ j. d
    // Note also, that with the additional: b4 k$ k1 H6 J2 [3 F" ^/ r
    // `randomizeHeatbugUpdateOrder' Boolean flag we can( {; \' }7 ]/ B, S$ \: S$ h1 {$ q
    // randomize the order in which the bugs actually run
3 s& T( E8 L* z4 X4 F    // their step rule.  This has the effect of removing any4 K! Y- M2 U4 s; f! ~6 W' l
    // systematic bias in the iteration throught the heatbug6 k8 V0 u/ e; e% S1 y+ ~
    // list from timestep to timestep3 \& {1 H; H, Q% V$ k3 ?
        
6 t+ E& g, ~  ?1 E  n1 Y& Z2 i5 `  Y    // By default, all `createActionForEach' modelActions have
, B" u$ @& m: C3 [  g    // a default order of `Sequential', which means that the
5 j1 w! J. q' A+ Z    // order of iteration through the `heatbugList' will be  r; {( u, R1 w8 l# _, Y/ ]- p
    // identical (assuming the list order is not changed3 `8 L( G/ t2 y0 n7 h
    // indirectly by some other process).* [1 H2 D8 c( l& V
   
0 z% \. q3 h' a: a0 i' N    modelActions = new ActionGroupImpl (getZone ());
3 `, G2 x% }- k7 r8 O* t3 W! L. c8 p4 A" x" B. k) i& Q( d9 ^3 I
    try {5 y% w; w* F5 o! I
      modelActions.createActionTo$message: X+ L! g6 R) V) d
        (heat, new Selector (heat.getClass (), "stepRule", false));
8 p3 v" T1 a5 b4 k5 t/ n/ n    } catch (Exception e) {
$ ^& r8 Y. V- F4 i9 C- y      System.err.println ("Exception stepRule: " + e.getMessage ());
& w+ E: v+ m, r# R0 K9 E7 ]( ^    }
' p6 p8 j$ V* Z3 g" h
! N! \4 w) {" G+ ^    try {2 a1 U9 ]/ {$ v
      Heatbug proto = (Heatbug) heatbugList.get (0);6 n8 y; o+ B2 i7 |: h
      Selector sel = . Z$ A. P8 Z/ q# P( T
        new Selector (proto.getClass (), "heatbugStep", false);* A* T6 G' |/ K* Z
      actionForEach =
8 Y* J) G* `' B8 R        modelActions.createFActionForEachHomogeneous$call
5 u8 b& s' j, h4 p% \! i        (heatbugList,
' a7 u8 v& l  p4 g/ U. |5 a. Q3 t         new FCallImpl (this, proto, sel,
8 n* T2 C. ~! c' q, v                        new FArgumentsImpl (this, sel)));
- w" W& o. }6 ?/ a. t. l+ x    } catch (Exception e) {/ V4 V6 Q4 l; \8 Q0 L
      e.printStackTrace (System.err);
6 b8 q! I& l" O) x$ U# V+ h    }. O' V$ i  @( e8 F7 ]
   
9 I0 L. U& j. A9 G, f) f, n8 t    syncUpdateOrder ();
5 I- p( P" d- V0 W# X
/ t" l( X. n; m! ?: h/ k    try {
+ S3 t- C2 x1 i' K9 S/ y      modelActions.createActionTo$message
9 O2 `' Y! ~- H        (heat, new Selector (heat.getClass (), "updateLattice", false));
3 v0 S& d% g( }% r2 B    } catch (Exception e) {  ~! d2 q/ g. {: U' D* M
      System.err.println("Exception updateLattice: " + e.getMessage ());3 u# d& p! W" B4 m
    }
0 Y) X6 z) r7 ~0 B9 P: t        " V8 p- i! l+ k! Z6 l/ I8 w
    // Then we create a schedule that executes the
% u  a! O- N+ n: f/ C    // modelActions. modelActions is an ActionGroup, by itself it- U4 g* ~& `- I+ @9 B+ L* F: A1 U
    // has no notion of time. In order to have it executed in
# N  ^2 d& g/ i# C% \    // time, we create a Schedule that says to use the% _2 J$ B: Z; y7 z; u  c
    // modelActions ActionGroup at particular times.  This
  o7 H0 V8 P6 A3 m* Q    // schedule has a repeat interval of 1, it will loop every  t( V" g3 W. @$ j
    // time step.  The action is executed at time 0 relative to
- N5 }8 ~) K8 `5 }/ a    // the beginning of the loop.
/ F( ~# h; W6 ?
$ `2 A) L; V) I  X& l( ^    // This is a simple schedule, with only one action that is% C# P0 b9 n" B6 q* S
    // just repeated every time. See jmousetrap for more, t/ ]5 y4 S) i0 s( F  W% s
    // complicated schedules.
7 J- p4 B' q- m. Y6 `) X& F# u  
/ i$ Z/ c. \, O0 n: A% C! x1 z    modelSchedule = new ScheduleImpl (getZone (), 1);
- F" L- I6 Z! B1 b    modelSchedule.at$createAction (0, modelActions);
/ d0 |* [8 `: S        
' J4 j; l7 M* k" y! d& b6 y# Z) O    return this;+ n& ~) t4 u0 m  h) `, G4 i) c
  }
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, 2026-4-7 09:52 , Processed in 0.016621 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