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: 10586|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:. p2 L3 \3 Y( ?: o1 H4 f8 R( a

5 j1 |& X% E7 X* Q% A4 x public Object buildActions () {
" w  ?! n3 R6 D$ O( v* N# W    super.buildActions();
+ E- w! F3 n$ K  s9 }   
: R$ e+ O  ^5 }! [/ M    // Create the list of simulation actions. We put these in
( }2 ], n( S6 O7 a    // an action group, because we want these actions to be- k, s1 W( T9 ~% \" z) f( j* B4 \7 t
    // executed in a specific order, but these steps should
$ c5 c" ?+ T. N3 `( R! v7 f5 F    // take no (simulated) time. The M(foo) means "The message
& B; _' `: V, k    // called <foo>". You can send a message To a particular  T- o. e% M" G% M0 R
    // object, or ForEach object in a collection.
1 S: T1 X% y( k! m1 G/ h        : {/ ~. }. u  ^& ]* V
    // Note we update the heatspace in two phases: first run' A& C2 p1 W8 p2 g$ F
    // diffusion, then run "updateWorld" to actually enact the1 }! p( O9 N! Y: K4 P  F
    // changes the heatbugs have made. The ordering here is2 E+ M! W6 X7 }: C' h5 K
    // significant!0 F/ _! s7 N) I! q" N1 O$ ^
        . V+ a5 _  y' X
    // Note also, that with the additional
7 w- h% O. K! q- D: o  J" W" l2 U    // `randomizeHeatbugUpdateOrder' Boolean flag we can
' @2 F7 Z( o* x# g' Y3 g, f    // randomize the order in which the bugs actually run, t3 [' ^. F/ f* T. U! w5 ~
    // their step rule.  This has the effect of removing any
$ V: P/ b. Y* ^    // systematic bias in the iteration throught the heatbug
  @; j0 j* X) }3 C; i1 B( P& g    // list from timestep to timestep
$ Y7 q, M+ ^$ Z3 l) f        # z6 X6 A0 n! z1 C/ e
    // By default, all `createActionForEach' modelActions have
( T# u" c. y: x8 Z% w    // a default order of `Sequential', which means that the, N# I. e, n  J* a9 W8 e* w
    // order of iteration through the `heatbugList' will be
- H1 r4 y* P8 L+ F$ j# K9 k6 f7 L    // identical (assuming the list order is not changed
5 V7 C' n4 l8 ~( s    // indirectly by some other process).
' J8 |! x; i4 q   
8 n3 C6 y' r7 D) j( \    modelActions = new ActionGroupImpl (getZone ());
7 J0 a! C9 d% \9 W/ g% H
9 N& v& A- I- w    try {* r( i5 d3 I. c* y
      modelActions.createActionTo$message, L! J+ A& W1 R( q$ j( R& v
        (heat, new Selector (heat.getClass (), "stepRule", false));- T9 Z- \: P9 a, \
    } catch (Exception e) {. u( Q, X; n9 l3 i3 a
      System.err.println ("Exception stepRule: " + e.getMessage ());
$ l0 C$ w) o: U; I    }
9 Z# w2 ]& k$ [( N5 s; b, b. ?
    try {
" F8 e" [  E3 J" e$ Y      Heatbug proto = (Heatbug) heatbugList.get (0);$ J- r* S4 O* A- U0 s/ _
      Selector sel =
# |. u9 W; w. X0 F5 V5 d7 |# d        new Selector (proto.getClass (), "heatbugStep", false);
1 X) S0 J" x$ y" R2 _" E+ t      actionForEach =0 j  b" m4 Z# N
        modelActions.createFActionForEachHomogeneous$call
' t. M1 W0 Q: m        (heatbugList,9 A! k* S/ E+ z0 W/ m) I1 k  B
         new FCallImpl (this, proto, sel,
  [9 F5 }- L7 F- u( L                        new FArgumentsImpl (this, sel)));: c6 a3 L3 Y2 z% i- n9 z
    } catch (Exception e) {! A- B+ o( }! g* _( M# x4 Y6 P
      e.printStackTrace (System.err);3 E! d2 l& _: q3 {8 n
    }- E1 d. f( \. u
    / P5 C# ~  {0 c; S+ k9 w& \8 _$ b
    syncUpdateOrder ();
- [& z( ^1 D& E- Y2 q# u6 ^. [1 n/ [# T
    try {1 h( r2 r5 M$ x2 |7 l- v% Y  h: l
      modelActions.createActionTo$message
& _7 P8 L7 [7 v) ^! W, n# K        (heat, new Selector (heat.getClass (), "updateLattice", false));! W- z3 F& T" v
    } catch (Exception e) {0 c& L; C  f4 U$ [; q5 B
      System.err.println("Exception updateLattice: " + e.getMessage ());$ a2 C  w8 C, ?$ ^+ P
    }( s& P  d, E  [; V- K; ~
        
+ J* W: e0 A7 q. d% V    // Then we create a schedule that executes the
: c/ u4 \0 _) A5 x7 Y  _    // modelActions. modelActions is an ActionGroup, by itself it" @" J! m8 h3 k5 h6 x
    // has no notion of time. In order to have it executed in) ?0 x. G  B- H" b0 e+ r
    // time, we create a Schedule that says to use the
/ b7 l$ }3 [0 f8 |7 ^0 x" D4 n    // modelActions ActionGroup at particular times.  This
9 N' }' b  y8 F7 C" v    // schedule has a repeat interval of 1, it will loop every
4 e" g+ j/ z) E    // time step.  The action is executed at time 0 relative to5 c6 S: k) S5 w) r- z( c
    // the beginning of the loop.
! C3 i5 A* c2 g6 D  ^3 ~7 f% x( `) b/ M% A
    // This is a simple schedule, with only one action that is1 o( _# C$ L2 F- u% r4 j
    // just repeated every time. See jmousetrap for more% S, C! ?; }3 c2 X6 @5 O
    // complicated schedules.
! j# M  q+ j$ \. Y8 _( m4 r- L  
. Q- @: N- y1 j# [+ V+ u" [    modelSchedule = new ScheduleImpl (getZone (), 1);( y! x7 X) h; q2 @4 O: T. a1 N
    modelSchedule.at$createAction (0, modelActions);2 P# D7 @8 F) F% d. \# C
        
# c1 m# {. A& d' I    return this;6 [9 z% Y9 J: g4 c0 ?* t  n; U
  }
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, 2026-5-7 16:26 , Processed in 0.016774 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