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: 11102|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:
4 ^( D% n% ^( c! Y( s5 g
# [+ U0 E/ E0 R; U) ? public Object buildActions () {
. c- u- P7 P% D( A# y$ s1 _. t  N    super.buildActions();
, u- ^) Y1 n1 b    3 M7 u6 X% P" o; L7 c
    // Create the list of simulation actions. We put these in
9 R! T9 F* `9 k- O    // an action group, because we want these actions to be# f% g1 V5 _9 Q1 I0 J
    // executed in a specific order, but these steps should
4 v6 M+ w" m1 P+ x/ x( \    // take no (simulated) time. The M(foo) means "The message
7 s1 V7 ^6 L+ ~: ]7 }    // called <foo>". You can send a message To a particular
7 q: d- b6 [3 l( s    // object, or ForEach object in a collection.
; c- r) Y9 W6 H7 G" X' J8 k        ; }$ \+ a& _, u! \0 _. F3 |) A
    // Note we update the heatspace in two phases: first run5 S  k$ D# ]8 U# `
    // diffusion, then run "updateWorld" to actually enact the# F6 D9 i) r& w8 }  i6 o2 l6 t6 Y
    // changes the heatbugs have made. The ordering here is
9 i; l0 V6 f8 X) T  b1 P    // significant!  b3 e, Z* T* V, F6 U
        - x0 h2 H) D8 B- G+ T9 d
    // Note also, that with the additional
* C+ K9 `! K2 U6 v7 L, V    // `randomizeHeatbugUpdateOrder' Boolean flag we can
# s& x2 S4 p1 r6 P$ `    // randomize the order in which the bugs actually run
+ R6 S7 x) L  F; E    // their step rule.  This has the effect of removing any
0 `5 J. {0 s) V. I    // systematic bias in the iteration throught the heatbug0 ], m( Q1 k( G7 `, v
    // list from timestep to timestep
- c2 }& g9 d4 T6 R" j' K        2 T0 D# D7 K# t
    // By default, all `createActionForEach' modelActions have
' @* ^. M0 t2 F5 @; U    // a default order of `Sequential', which means that the
+ X) U# v0 Y4 A+ I# ?" A/ y    // order of iteration through the `heatbugList' will be, J% T# H; r3 g0 F
    // identical (assuming the list order is not changed# [; j4 p* [2 f; [4 ^
    // indirectly by some other process).
5 t/ n2 z  e6 L4 z3 \    ! ]1 {. R  m) {. c/ k  r# r7 w% S
    modelActions = new ActionGroupImpl (getZone ());" v8 C+ }  @& L7 G. i. P) _
3 B$ ?5 S# c0 J% P% X& G
    try {
3 W% ^8 Q+ `$ y7 l# F      modelActions.createActionTo$message3 Q; P% a, D5 T+ w8 z
        (heat, new Selector (heat.getClass (), "stepRule", false));
; m( B8 C( `6 e& K7 q% Z  X* V7 o    } catch (Exception e) {
* b/ T7 g4 q% }0 Q* R4 x5 b" K      System.err.println ("Exception stepRule: " + e.getMessage ());
$ |9 c. `( v0 y8 w0 S3 T  d    }( ?0 W4 s! B: D9 t
1 r0 T1 y: o. V
    try {6 W" R, D) F3 o
      Heatbug proto = (Heatbug) heatbugList.get (0);2 D% k# l  G6 C4 O, V4 y0 |, V! q! L
      Selector sel = ! F( m; T" N3 Q. D3 i9 ^; a
        new Selector (proto.getClass (), "heatbugStep", false);
2 j" w. y7 c" {' \, y      actionForEach =1 `) W0 m% V' ~5 O
        modelActions.createFActionForEachHomogeneous$call
) i6 \& i. R' D  h1 P        (heatbugList,
" F' o3 C) E- X6 H' U+ z         new FCallImpl (this, proto, sel,
: [( w3 b9 r( h                        new FArgumentsImpl (this, sel)));
/ q" s$ j" l; x2 X" z; x- E) @; d# \    } catch (Exception e) {- ^  m  D- O" [# e$ J( h* [. W, ]
      e.printStackTrace (System.err);( U1 y( y! W) e  p/ o6 _
    }) H4 L+ f+ h; W3 E+ G! O: }/ A0 N8 G" X
   
$ C5 G2 l8 K# i* ?    syncUpdateOrder ();; {! |' Y) \, f: G, B

: O9 O5 j  U7 a0 R/ p    try {; ]! [4 \0 ?  z9 O3 U
      modelActions.createActionTo$message
$ R% J. E1 y. o( L6 E( k        (heat, new Selector (heat.getClass (), "updateLattice", false));
" j! w1 b4 o; K    } catch (Exception e) {) t! x& t; z' S8 `" y3 B* p- {$ f* u
      System.err.println("Exception updateLattice: " + e.getMessage ());1 {& v& ]* c7 G0 f% U
    }9 L) ~) n. W! [$ }- [$ {4 z% J# |
        7 z! u7 h( d  Q' ^
    // Then we create a schedule that executes the0 `! ]6 L1 F/ K- N+ k
    // modelActions. modelActions is an ActionGroup, by itself it& R( Y; s" C" ]0 R7 G1 h
    // has no notion of time. In order to have it executed in6 T# V5 d& t( ?# p8 \0 z
    // time, we create a Schedule that says to use the
1 X. ^% G( F; x0 t9 E    // modelActions ActionGroup at particular times.  This
6 B9 ]; u6 M9 X) J    // schedule has a repeat interval of 1, it will loop every1 g6 y, R2 r$ [
    // time step.  The action is executed at time 0 relative to
7 `  _  D' }4 s+ j; y5 Y3 u* f    // the beginning of the loop.* z+ m  K; v+ v; A7 J7 }

$ K- h( S1 N0 \5 I7 ~; c' A    // This is a simple schedule, with only one action that is
: m4 ~! f) b6 e  K+ q2 i9 L    // just repeated every time. See jmousetrap for more
2 Q0 n9 k2 d1 w7 ]  P5 o- O' P    // complicated schedules./ h% f& e2 S& ]. ?$ _' r
  . t. q1 o2 k% R6 H
    modelSchedule = new ScheduleImpl (getZone (), 1);3 e: _& q" b% S
    modelSchedule.at$createAction (0, modelActions);
6 i% x! C/ ?5 R7 ~0 c        1 @+ S6 P; i. k
    return this;4 _. d; F! e  J& v, 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, 2026-6-12 06:22 , Processed in 0.013666 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