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: 9204|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:; a& q) G6 E' s! S% p

  n2 c4 R5 A1 t# e public Object buildActions () {
4 T* z4 _, \. U7 S1 [    super.buildActions();# X/ c: M( N+ w' k1 ^. x
    : f7 m' H2 ?1 }
    // Create the list of simulation actions. We put these in+ V" y2 V4 d0 \/ W6 Q
    // an action group, because we want these actions to be
/ x% o$ H; L" i, \7 D" N% |    // executed in a specific order, but these steps should" ~: H; u+ X5 b8 ~2 ]; o  c
    // take no (simulated) time. The M(foo) means "The message
+ O% w0 r2 N2 L3 ?7 p    // called <foo>". You can send a message To a particular
* }# e, N3 O% w    // object, or ForEach object in a collection.% E; m$ _2 V% d6 v" G2 x7 c
        / R8 `$ ^1 t3 Y1 i& K( H0 `
    // Note we update the heatspace in two phases: first run# f+ r1 W9 l2 f% f
    // diffusion, then run "updateWorld" to actually enact the
  x. f' k0 ~" o2 H+ Y! `    // changes the heatbugs have made. The ordering here is: a5 F8 X$ \: B% ?9 M
    // significant!
; T- M- v& L# z: c0 o        8 |! b3 P1 J" o! B! [7 Q, |" C
    // Note also, that with the additional
+ S- Q$ |" m* X; X7 z1 i  L    // `randomizeHeatbugUpdateOrder' Boolean flag we can
# v! @9 K, Z  @1 h* M    // randomize the order in which the bugs actually run! t/ S* k" _' j1 ?, D/ D6 e
    // their step rule.  This has the effect of removing any
; Q" P& ~, z2 d+ j: {1 ]1 \' `    // systematic bias in the iteration throught the heatbug9 g' o5 v* V* N2 ]) j' B
    // list from timestep to timestep
9 T& E% A" f' j; [        ' U) A) [, t$ ^- v. e
    // By default, all `createActionForEach' modelActions have+ P  h2 N% [0 a
    // a default order of `Sequential', which means that the
# l, t& i1 m5 {! q; \    // order of iteration through the `heatbugList' will be
# z/ J2 a# ^& W! e- k3 s5 H4 U    // identical (assuming the list order is not changed0 }8 N. C) l+ |/ t& m! _. n1 A, K
    // indirectly by some other process).& l5 N( r  p$ u) n) T
   
; @3 N4 g) ?' A' h% |    modelActions = new ActionGroupImpl (getZone ());
! q3 e# K" T; J3 W/ W- B& a3 h8 C6 S% F$ a2 W$ h
    try {
( k2 D3 M! g* ~  P# f      modelActions.createActionTo$message
  m" G; C/ m& D+ l7 ]        (heat, new Selector (heat.getClass (), "stepRule", false));
* B1 ], i/ a; N6 y+ t' {# i    } catch (Exception e) {: z7 _' d9 O8 q6 I
      System.err.println ("Exception stepRule: " + e.getMessage ());/ w' C' j8 H& U4 K& I7 |; A
    }
% l7 Q7 X% e2 V  B$ B
) B2 `( o: S; v5 |# l- h3 {5 ]9 I    try {
  d, X- e  j" K) L' m      Heatbug proto = (Heatbug) heatbugList.get (0);" \3 U! y! f2 @0 v) q; b1 K
      Selector sel =
9 S+ d+ S6 Z+ C3 w, v: [9 m8 I- z        new Selector (proto.getClass (), "heatbugStep", false);
( I2 t3 K' u4 j# }      actionForEach =
0 F6 I' Q# m+ R- l$ _/ @- f: _        modelActions.createFActionForEachHomogeneous$call
( H7 b9 E& K! |* w& n6 T  t# a/ z        (heatbugList,- j) e: C+ c7 b! _7 o6 Y4 I
         new FCallImpl (this, proto, sel,
9 M' {' \; G9 t; p. a! ]                        new FArgumentsImpl (this, sel)));2 N' R0 s; u* |2 i/ R
    } catch (Exception e) {
- K: w& c0 E4 Q. r      e.printStackTrace (System.err);
: M" b7 v" ^0 V" [+ ?    }
, a& u- f( \  s" \7 F6 F    : f. |+ Z8 `" T$ V
    syncUpdateOrder ();
0 l" ^2 O  `- H0 W
9 [# S" J7 q& Y) x. I# S  v    try {
. J' o9 a! P. y& e6 N4 z4 Y/ w      modelActions.createActionTo$message 3 }1 X: }1 Q- N  _7 u9 S2 Y% ]
        (heat, new Selector (heat.getClass (), "updateLattice", false));
) Z+ J4 w1 [. c" Q+ h: ^) |. a    } catch (Exception e) {
" O+ E  F6 t4 d" N+ h6 j" c3 S1 a      System.err.println("Exception updateLattice: " + e.getMessage ());
1 H9 w8 Q" G# ~    }3 P9 S# E! m, {& B. H  B
        
2 ]' _  p# ?5 q. j. T. ]# ^# Z    // Then we create a schedule that executes the& D5 [# a1 \6 E
    // modelActions. modelActions is an ActionGroup, by itself it
( N% \% ~1 M! q( `- I! C/ v    // has no notion of time. In order to have it executed in2 f: M& w0 V' }0 O$ d0 B; n, R( }" A
    // time, we create a Schedule that says to use the
; f6 {$ M7 i$ _% P, q    // modelActions ActionGroup at particular times.  This
) t8 j2 j; Q& @& ^% P0 Q    // schedule has a repeat interval of 1, it will loop every
* v( R3 g( F# w# F# r' y) x2 F    // time step.  The action is executed at time 0 relative to! O$ g( |- o2 b
    // the beginning of the loop.
( b& r3 q  |8 o! ~
  T( m# a" p+ l% R# I    // This is a simple schedule, with only one action that is9 v% ~5 k' ?- P) U8 R2 S
    // just repeated every time. See jmousetrap for more: Q+ s& q$ F3 W
    // complicated schedules.
& S1 X( S/ X+ ]* e) l  1 O1 G# l8 d( ~) j& S! r
    modelSchedule = new ScheduleImpl (getZone (), 1);
: D1 I% Q0 F( w5 c& m% f    modelSchedule.at$createAction (0, modelActions);
- |- N) t/ a5 j* Z+ d' P. ~' A        ! u$ V0 [8 y! f0 ~5 y( e% A( a' ]( n
    return this;
: q( G# Q* h8 w' `1 G  }
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, 2026-2-17 13:52 , Processed in 0.016247 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