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: 8631|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:$ x' `1 g) q, y4 a8 V* e

& ]6 r4 A0 M% j3 G& f4 ^ public Object buildActions () {
  P9 c" e0 q7 w: V( M6 M    super.buildActions();4 W$ E0 G& X5 P
   
3 v$ [* ~& H: Y* U/ `% a/ C    // Create the list of simulation actions. We put these in
9 c; t  L5 ^: O( B2 q    // an action group, because we want these actions to be$ r6 q4 I& F# h9 N3 e0 F
    // executed in a specific order, but these steps should. h7 L+ F7 W4 m5 [
    // take no (simulated) time. The M(foo) means "The message
" i( ~6 P2 x6 _) f6 G    // called <foo>". You can send a message To a particular
2 G4 R( o  w, l: d) x    // object, or ForEach object in a collection.% s) r- `, }" Y( i. s" i& v' j4 s8 Q
        
1 ]0 K7 H. g; X. i/ q$ V0 W% s# `  [    // Note we update the heatspace in two phases: first run& i* S9 i9 E3 O! f: N
    // diffusion, then run "updateWorld" to actually enact the
( x# X+ a3 N0 ~# P( ^! L    // changes the heatbugs have made. The ordering here is/ G9 h* k# c3 V
    // significant!1 `* K6 E+ E8 z' d
        
# a( p/ `5 d# L2 p/ i$ h# W& ~! c    // Note also, that with the additional
/ U: S: |& Z. S  p2 }8 }# `    // `randomizeHeatbugUpdateOrder' Boolean flag we can
; O% y+ D8 W! Q/ @: E5 f# I    // randomize the order in which the bugs actually run
7 e' Y5 e! G0 y1 G0 c    // their step rule.  This has the effect of removing any  ], J: m. M! Q. W
    // systematic bias in the iteration throught the heatbug
$ r5 s! M  O3 F! i0 i    // list from timestep to timestep" O0 s3 o; i) e$ J& |. G+ w8 @. W
        
, ]# `1 |% b% j- X  M    // By default, all `createActionForEach' modelActions have/ Y# A* a! Q3 L
    // a default order of `Sequential', which means that the
+ Y2 @, e1 V; @% Q* z    // order of iteration through the `heatbugList' will be$ L! U) A) ~+ U5 ]" g
    // identical (assuming the list order is not changed
: y# N1 |9 B3 F: i    // indirectly by some other process).& D$ D* }) b6 T" y/ x
    8 L1 N; w1 d% |3 p1 V
    modelActions = new ActionGroupImpl (getZone ());
: z3 [" t, D6 w5 }* Y: s7 I9 q) L$ `* o2 |& o& E$ Q9 ?' y) i/ b
    try {& H3 b; J% o" R6 e" |
      modelActions.createActionTo$message# q7 K7 O4 F# a& z9 h* n. a
        (heat, new Selector (heat.getClass (), "stepRule", false));
4 B# [) b" P+ z7 E$ X3 r    } catch (Exception e) {4 f; @3 J1 f* {
      System.err.println ("Exception stepRule: " + e.getMessage ());& P' b( f/ I) F8 q2 G. Q
    }  Q# R0 e( T. K& _; Z+ o! a$ T5 b% t
, [4 R/ m7 N( E
    try {8 K4 L7 L8 v- i) C' L8 r4 Z0 d- f3 i
      Heatbug proto = (Heatbug) heatbugList.get (0);$ B2 C' |/ n5 s( w( B8 p% Y  J& Q
      Selector sel =   H' e5 L8 G2 \( W' }* L
        new Selector (proto.getClass (), "heatbugStep", false);2 k, ^$ @# @% S8 M, ]8 F
      actionForEach =
1 ]* X! ^) y/ w6 X% V" C        modelActions.createFActionForEachHomogeneous$call
- @% \) c' \* J# W  y% w5 }        (heatbugList,7 u( e% h$ d4 k6 y& u$ H
         new FCallImpl (this, proto, sel,# \) y- m+ m0 w6 ^) z% G
                        new FArgumentsImpl (this, sel)));
+ P4 K3 n$ f- U  e    } catch (Exception e) {: L3 `* J9 @9 ~% Q  J0 X. I, ~
      e.printStackTrace (System.err);
2 K+ w5 f) a- i# v# N    }
1 n; ~/ [% P- u$ g7 K: P. L' Q   
! Z  {3 A3 m3 H# w( [) m    syncUpdateOrder ();6 G# u! k# v4 ~- _9 j5 Z5 B  i0 J
* Z0 o6 Q+ P$ l- A6 u$ u
    try {
3 u( d; R0 D9 g      modelActions.createActionTo$message
, J) h9 r6 R- t9 N1 w        (heat, new Selector (heat.getClass (), "updateLattice", false));# |+ p) v" X& F6 x' G5 O
    } catch (Exception e) {
$ P" k; M# ?) q0 Q9 Y      System.err.println("Exception updateLattice: " + e.getMessage ());9 `  O6 k! Y& n' t4 R; Q+ _6 Z* s& h
    }. ~% B6 y6 l0 e- y& g  O8 S! d3 E
        
, [% K' t8 T$ t) b% K+ d    // Then we create a schedule that executes the2 h4 n# M/ V+ G$ W5 \
    // modelActions. modelActions is an ActionGroup, by itself it3 F  n* F' a- }* g
    // has no notion of time. In order to have it executed in
0 y, K  [/ k9 n& k    // time, we create a Schedule that says to use the, x' o0 P* n  N. y: X' ], P1 h/ f  l
    // modelActions ActionGroup at particular times.  This3 Q) C) t* P- X  P
    // schedule has a repeat interval of 1, it will loop every; i) b. s0 L9 `7 T; B. e' d- O
    // time step.  The action is executed at time 0 relative to
( {" |; f% x5 A+ [    // the beginning of the loop.8 l' q  t' r2 r: I

* R0 \) \. |8 ?; F5 A( Q    // This is a simple schedule, with only one action that is
9 S( k+ E( j- M" d5 a: F    // just repeated every time. See jmousetrap for more
5 J$ h3 S# E4 y3 I- G& k    // complicated schedules.5 \3 {: Y/ [) k, Q9 f' U2 O: m
  ; n- X1 J6 e% ]/ V* Q
    modelSchedule = new ScheduleImpl (getZone (), 1);! t+ m1 Q* J1 J& p0 y' E
    modelSchedule.at$createAction (0, modelActions);% M' w9 Q) K$ |7 M4 T9 \. l" o8 i* [
        , |9 k, J% V$ U. X
    return this;
; m/ B& B- [# e  }
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, 2026-1-19 06:10 , Processed in 0.023010 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