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: 9603|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:
' J) S9 T3 A; m5 V0 w9 w$ ?- C* p& R. O3 c/ I) \6 L' ~
public Object buildActions () {
( s# v! [% W2 e& O2 E    super.buildActions();! H; O; t' n1 D7 Q1 e
   
4 M0 E8 r' x5 m; b: C    // Create the list of simulation actions. We put these in8 i/ Y; B3 }7 f, Y/ H
    // an action group, because we want these actions to be
9 g. S/ u( y* R' _: W9 n! ^    // executed in a specific order, but these steps should; h8 t; I3 Z  S7 f+ V3 `
    // take no (simulated) time. The M(foo) means "The message( b% }7 @; F/ |  p+ m& m
    // called <foo>". You can send a message To a particular& j# C) l) c1 V9 k4 V1 R
    // object, or ForEach object in a collection.
3 h0 w3 t6 f4 S1 ?, R        ( ?0 W) W. R! k7 B7 [  V6 s
    // Note we update the heatspace in two phases: first run
  H% v  X4 n" k    // diffusion, then run "updateWorld" to actually enact the
, o. S$ b: X' _4 h    // changes the heatbugs have made. The ordering here is
$ K3 t, W+ g  c& f+ [- d    // significant!9 l$ {2 U, K% w+ C( l
        
- ~! z6 A& ]4 p+ e; E    // Note also, that with the additional
. F: J. u9 _3 ]    // `randomizeHeatbugUpdateOrder' Boolean flag we can/ L6 U$ B* o+ U& d; t8 @' _
    // randomize the order in which the bugs actually run5 H" H6 ~# f! S
    // their step rule.  This has the effect of removing any4 P5 B3 ], I# o
    // systematic bias in the iteration throught the heatbug
7 C  y4 l- u" T' s0 e" ^    // list from timestep to timestep
; c  j7 a8 M- _$ y/ H        
& h, _& t) v! z3 y/ _7 k+ j    // By default, all `createActionForEach' modelActions have
. y* N: F0 N+ Y' ]    // a default order of `Sequential', which means that the  Z) I( W- L3 x
    // order of iteration through the `heatbugList' will be
7 w4 e0 I. ?+ d5 m    // identical (assuming the list order is not changed$ w' {  z" D  f
    // indirectly by some other process).
+ ~. r4 N  ?" ~+ I5 S    0 h; V% t( H. N) T
    modelActions = new ActionGroupImpl (getZone ());
+ i  v( i8 }. ]6 v
7 l! x% ]) }/ k$ k# [  ?    try {
1 V, b/ i: C9 ^) g. c      modelActions.createActionTo$message
) y$ Y$ W7 l7 O2 q) O        (heat, new Selector (heat.getClass (), "stepRule", false));2 G% J% Z0 i, p5 }
    } catch (Exception e) {
0 n1 Y8 W/ `8 P/ `      System.err.println ("Exception stepRule: " + e.getMessage ());
) [, e9 [' l( C    }
3 k4 k$ J  M" O: x( d
7 S5 i! {+ h# I    try {
  ~. s* G: b$ N3 ]+ ]' t      Heatbug proto = (Heatbug) heatbugList.get (0);- S% h+ @, C7 l/ Y: l) J0 r% Y
      Selector sel = . C( ]4 }& v, n; S% [8 {6 I
        new Selector (proto.getClass (), "heatbugStep", false);
& d+ p6 ^. B; k4 T4 `1 x% I      actionForEach =
4 Y2 A% \0 |' e1 d' i2 o        modelActions.createFActionForEachHomogeneous$call& F6 ~* A) F- ^1 D( k' r  Y, A
        (heatbugList,# {' W3 _7 Q  ~+ D# [
         new FCallImpl (this, proto, sel,
) M, f) s8 c: E0 k3 h                        new FArgumentsImpl (this, sel)));! O- u3 y; P& e9 y( Z
    } catch (Exception e) {
2 b8 j; Y) H5 w4 ~1 L) ]! E      e.printStackTrace (System.err);
4 \1 h1 |, {/ u. T4 [" Q    }/ e- ]$ O' }! O
   
6 d5 C  M9 T0 t5 w- |1 _) q+ T& I    syncUpdateOrder ();
4 X" f  X) j& w' z. B+ s
! U  `. h, j, o* @$ }    try {$ n3 G4 K5 M8 o! V: C
      modelActions.createActionTo$message
0 h4 w- o! a1 W3 [& {1 s/ a        (heat, new Selector (heat.getClass (), "updateLattice", false));8 |  P5 Q7 @  ]( o( c3 ?  k' O
    } catch (Exception e) {- I6 o' X; I5 ]; U1 D
      System.err.println("Exception updateLattice: " + e.getMessage ());
) h. S3 {" O) n# \# S$ \" o* A2 m    }9 a& V3 N+ F  C" U9 P  O
        
! D& p, a: S* G! E" W: E1 c" y, Q    // Then we create a schedule that executes the  Q9 f3 o) p: d5 J" b
    // modelActions. modelActions is an ActionGroup, by itself it
9 M' P7 u: @4 G! `: S5 G& ^- [    // has no notion of time. In order to have it executed in: q3 x8 [2 [, A4 _$ m; M! s5 }
    // time, we create a Schedule that says to use the
$ |! z  k9 ?+ [' K! b$ U8 ~  w    // modelActions ActionGroup at particular times.  This
+ W. Y, ~$ m3 [% Q; c    // schedule has a repeat interval of 1, it will loop every; X2 R, v( d* ?" W
    // time step.  The action is executed at time 0 relative to
# P: m7 e: t- t: E  W$ g- @2 T    // the beginning of the loop.
. a; _% j0 E  b
- S, G& |. c9 T! t; e; ^8 r    // This is a simple schedule, with only one action that is& n. [1 s7 x* U
    // just repeated every time. See jmousetrap for more+ s$ h# c2 S; n/ I3 Y) n
    // complicated schedules.
, c% s! d- `" h$ I4 O3 F. q  : m( l) P- f: v! D
    modelSchedule = new ScheduleImpl (getZone (), 1);
) a( Q9 W$ o* ~; u8 g' R    modelSchedule.at$createAction (0, modelActions);1 O6 f4 `% Z1 ^3 T) x% C
        5 y2 p! L0 Y5 c0 k
    return this;
: O  c8 A! t- i, e2 X1 v  }
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, 2026-3-12 23:55 , Processed in 0.012976 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