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: 11384|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:, ~& b( z+ v: M

, \. A9 H# _) X0 T$ ^ public Object buildActions () {. i' B9 n7 U; m6 D6 C
    super.buildActions();% ~5 ^% v' S4 S7 j
    2 K6 j0 S  l' z, Q, T! |4 Q6 Q
    // Create the list of simulation actions. We put these in
! @- K+ w1 \7 L9 a- `2 [    // an action group, because we want these actions to be
) F* R# F! V$ L6 v/ F    // executed in a specific order, but these steps should6 }! F( |+ ?- y  ], }
    // take no (simulated) time. The M(foo) means "The message' w% ~7 y: o, w2 p- b4 l  S% W9 F
    // called <foo>". You can send a message To a particular2 U+ P$ I  }& f7 T
    // object, or ForEach object in a collection.+ b' I  M  a1 B1 Y, p$ S. v
        ) S, M1 \' }  e, U
    // Note we update the heatspace in two phases: first run8 i/ g; E9 H2 _2 [% j; T9 l% {6 v
    // diffusion, then run "updateWorld" to actually enact the
+ z% j" N  z# ^7 K: d9 f9 f& B    // changes the heatbugs have made. The ordering here is2 k0 \, K) a- D3 j" _3 A
    // significant!% z3 E; P0 f5 k
        
5 o- B& d, S( g3 g5 n2 t+ h: J    // Note also, that with the additional
3 s$ s) t. Q% |    // `randomizeHeatbugUpdateOrder' Boolean flag we can7 |! c+ U* S. e* `
    // randomize the order in which the bugs actually run  L( ~% K5 y7 ~9 ^6 h
    // their step rule.  This has the effect of removing any- ]2 f* |2 i( p3 Y7 y- o1 q
    // systematic bias in the iteration throught the heatbug
% w6 C1 q  b! v, ?    // list from timestep to timestep
% {$ n- \) M& p5 V  ^5 j! M        
+ d* L% m9 Y" f% w    // By default, all `createActionForEach' modelActions have
  H# o  L+ ?/ }; g6 J3 \3 H9 Z    // a default order of `Sequential', which means that the* |7 {8 }! X) f& W. M  [; R& p
    // order of iteration through the `heatbugList' will be8 e9 s9 f$ @% s5 f' y: {. ~
    // identical (assuming the list order is not changed) C  n4 x' \4 }" q0 x5 C% i. W
    // indirectly by some other process).1 Z+ {6 `# k! A% {# j7 U
   
) D! P2 S- M$ N. a4 ^! J  {    modelActions = new ActionGroupImpl (getZone ());3 `0 `% g0 P( h4 t4 i, d
% z) P& x! C+ y9 q1 A
    try {% ]& V2 p  E* Z# @$ \
      modelActions.createActionTo$message
9 T; A( J% `, ~* A; H        (heat, new Selector (heat.getClass (), "stepRule", false));; a1 a# F9 I# O/ S* r
    } catch (Exception e) {
. G1 n6 s6 ^0 T! q0 g      System.err.println ("Exception stepRule: " + e.getMessage ());
5 A0 l% K( \" z3 C/ @/ W9 i    }
9 V% o* c. c8 _$ K: J
# s/ _* s4 |# D0 x8 C& D    try {; ]( _2 P9 V6 x6 f# |
      Heatbug proto = (Heatbug) heatbugList.get (0);$ r( T+ f/ B3 i% f+ Q6 z8 Q3 i
      Selector sel =
6 G- J6 M- |+ e; e        new Selector (proto.getClass (), "heatbugStep", false);+ Z* @, C% S  g. C/ F" x9 ^
      actionForEach =
* M: s! p2 Z* J% A        modelActions.createFActionForEachHomogeneous$call
$ p- i2 D; A$ r  k& L! E% H* n1 b        (heatbugList,8 U* K/ H: ~% e* d
         new FCallImpl (this, proto, sel,  o$ b2 ?$ {$ F  _9 T: H/ c. H
                        new FArgumentsImpl (this, sel)));  |( j" `, r' W3 V
    } catch (Exception e) {7 H1 A( I; g4 `' ^$ t
      e.printStackTrace (System.err);0 {" W( R# s/ M+ d1 N
    }
5 f- ]* t: X3 I   
% j4 i7 @) q9 \4 x    syncUpdateOrder ();
) `) H8 W4 c! T, U8 w  Z7 T, o5 t
    try {
1 l3 X# y3 A0 c/ n      modelActions.createActionTo$message
' a0 E2 |8 y- l4 W; I7 W$ {* F        (heat, new Selector (heat.getClass (), "updateLattice", false));% t+ l0 f5 }( g
    } catch (Exception e) {0 O( |: A) M0 G$ {. @1 P
      System.err.println("Exception updateLattice: " + e.getMessage ());+ l* X. F& {; X3 O$ C! y
    }
+ x$ V  Y4 Y5 t  t* h, g  }0 A& _        ; Q9 k# O$ K. W2 g. q
    // Then we create a schedule that executes the) [  f( ^: h$ t8 ?$ h
    // modelActions. modelActions is an ActionGroup, by itself it7 R" J: U2 t) k9 |" G( a0 S
    // has no notion of time. In order to have it executed in
4 ~$ q* P9 O8 T- j, \; j    // time, we create a Schedule that says to use the  ^' U% L2 e4 ?0 v) ~; Y1 l- F/ z
    // modelActions ActionGroup at particular times.  This
% _* j7 D: j/ s- W" v    // schedule has a repeat interval of 1, it will loop every
" G0 R" S% }1 s/ p    // time step.  The action is executed at time 0 relative to
2 b# m$ _8 S/ B! v# a    // the beginning of the loop.
: V$ i% V/ g% U# G
$ W* l% \9 G) I- e$ a    // This is a simple schedule, with only one action that is
. A9 n3 G- t$ l: r    // just repeated every time. See jmousetrap for more/ t3 l0 _/ F/ I+ b, S4 X4 a
    // complicated schedules.
( s- u8 S4 v6 y+ g9 B  & ^" s# d6 K, E
    modelSchedule = new ScheduleImpl (getZone (), 1);2 {% N5 N6 t. ^+ P. [1 f
    modelSchedule.at$createAction (0, modelActions);3 d7 {6 f+ `/ J3 ?) [  d8 k
        
. w+ z' m( e+ G" Z! i! \' ^    return this;! e! F8 p1 n5 J. x; z& H
  }
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, 2026-7-1 00:39 , Processed in 0.017259 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