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: 11388|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:
7 y5 ^2 D$ ?* j- o  I4 `& z; w% P
public Object buildActions () {
: C2 Q* w# C6 j* F# Q$ _9 ]8 l! U    super.buildActions();; i% s- `( v6 G$ l1 x
    / v) ?( S7 u" s% d7 Q
    // Create the list of simulation actions. We put these in
: I# K) \) |) M6 u- }7 T6 P( e    // an action group, because we want these actions to be3 h5 W# T% o; `: ~& K
    // executed in a specific order, but these steps should
" n# A- _2 S7 f7 Q$ `2 b    // take no (simulated) time. The M(foo) means "The message1 S6 G. p6 `+ m
    // called <foo>". You can send a message To a particular
, w. r& H+ }$ K) l2 x- J    // object, or ForEach object in a collection.) N6 m, @* p  G
          _/ m4 }& w7 Y9 Y6 x
    // Note we update the heatspace in two phases: first run
. H+ u  |3 {! a" T  }- s5 n: z$ Z    // diffusion, then run "updateWorld" to actually enact the" C; p. o* y( [. n1 I& i! |
    // changes the heatbugs have made. The ordering here is7 P4 J. H# e  I. F
    // significant!8 k; S* b, G" t( t) y2 a
        
7 \8 P1 J- x/ d: |, B. p    // Note also, that with the additional
8 J9 W  ]& P2 l0 |    // `randomizeHeatbugUpdateOrder' Boolean flag we can3 V, U2 t" s. O4 O
    // randomize the order in which the bugs actually run
; a, A* g4 E8 h6 X    // their step rule.  This has the effect of removing any. q) B# ^# A- q3 b0 y2 v6 x
    // systematic bias in the iteration throught the heatbug
# V/ M; Y- Q! C3 n# r/ B    // list from timestep to timestep9 E0 H$ s( v: ^. o( n
        $ E& k& J! K9 E2 A' T
    // By default, all `createActionForEach' modelActions have6 S6 t3 r& D# R3 R8 M) y4 u
    // a default order of `Sequential', which means that the
* D1 R4 u9 P8 L* r9 Q# ?    // order of iteration through the `heatbugList' will be' y+ ^% |0 R7 w' ^, x+ ]1 p) }
    // identical (assuming the list order is not changed
, M, @, t+ y( J) S# O    // indirectly by some other process).
! {4 }) S' G" j5 [( A7 k* x    / Y4 t- S. P6 }' N0 k# @
    modelActions = new ActionGroupImpl (getZone ());4 V0 z2 j0 I7 [% b
. e3 r  |- P$ q! U. \; e7 X
    try {6 ?# d9 R9 c* m4 B
      modelActions.createActionTo$message
4 {: x3 K2 K  |2 J* @        (heat, new Selector (heat.getClass (), "stepRule", false));1 z; k4 ]0 c( b2 `/ c+ y
    } catch (Exception e) {
: I7 B. f: u+ A8 R( T7 i      System.err.println ("Exception stepRule: " + e.getMessage ());( k; w6 h" o- W
    }' [$ H- p! {( R
0 [4 M& i+ r4 ?/ {! q
    try {
, a% m0 @/ d5 p) \/ {      Heatbug proto = (Heatbug) heatbugList.get (0);4 L/ ]% N0 U6 q& X
      Selector sel = . u" {+ V2 s; M; y7 \# g
        new Selector (proto.getClass (), "heatbugStep", false);1 M7 e; M  J& g! x5 q0 `' b5 Z
      actionForEach =* A& h* r) a; t3 D9 G
        modelActions.createFActionForEachHomogeneous$call
6 ?( P4 I; B$ G- I* v        (heatbugList,$ Y& u, A: P2 V/ _5 ^
         new FCallImpl (this, proto, sel,7 v2 i' \6 Q7 k( \/ S0 A# r) z  V
                        new FArgumentsImpl (this, sel)));) c4 }4 M) \# M. B( {- P: W; O2 }( n
    } catch (Exception e) {2 z1 h; c4 s' I' V2 U
      e.printStackTrace (System.err);2 U  w; a  h' ]5 i+ A
    }  [; k' G6 Z6 R$ ?& {- {/ j
   
. @! e( U" C$ c1 `    syncUpdateOrder ();
) A! g, y7 z; Y# y3 b7 a
  X& w; f4 k- b& _+ s4 c/ |    try {- X5 Y5 T* U6 q
      modelActions.createActionTo$message
6 }/ e& f" `0 e7 A        (heat, new Selector (heat.getClass (), "updateLattice", false));5 }3 _4 W  t4 ^8 r  Y
    } catch (Exception e) {
! [4 C+ s3 p. V3 J4 J) f) ^0 w      System.err.println("Exception updateLattice: " + e.getMessage ());
! A% y1 o9 `3 n3 a' M* ~    }
! ^0 F3 l% _+ ?+ V- c% o, a! j7 l        , r: P! u4 u, t; u1 e" J* Y
    // Then we create a schedule that executes the
, E/ U! n* i1 E, u# i! o( g+ R    // modelActions. modelActions is an ActionGroup, by itself it
5 t3 X) S! }7 }- h) k5 R7 i. P; X    // has no notion of time. In order to have it executed in
; ~$ G7 ?4 r9 {6 z  `; u    // time, we create a Schedule that says to use the4 m: `/ G7 C- |! z4 `! o. ~) w9 J
    // modelActions ActionGroup at particular times.  This% _9 Y( H. K: ?: x# B& a
    // schedule has a repeat interval of 1, it will loop every" f4 I, ~' |; m' J
    // time step.  The action is executed at time 0 relative to
; y5 \5 o2 S& o, m    // the beginning of the loop., k1 k: d8 ^4 I2 l5 n

, @+ E  Q+ s, Z1 k9 Z: ~- Q    // This is a simple schedule, with only one action that is$ h/ ]' K* s$ K% S) L1 z
    // just repeated every time. See jmousetrap for more+ S1 N  I9 ^6 @/ F
    // complicated schedules.
9 P/ F$ N% D% v* y& X$ H  
- q/ B/ H- q# K2 C4 P4 H; }1 n    modelSchedule = new ScheduleImpl (getZone (), 1);+ E( Z- }$ F" {* G0 L4 n
    modelSchedule.at$createAction (0, modelActions);$ A" |6 W, R3 G1 E, z' q
        
, Z2 v6 ^6 F$ z3 O7 R- y    return this;+ j& D# d% V6 F, [
  }
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 07:54 , Processed in 0.011582 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