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: 8086|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:2 p5 R, f, Z$ E- m) R! U
0 t( H* B: I8 O
public Object buildActions () {* m! z" ~: M1 M4 s/ j) F
    super.buildActions();
6 @" u, f7 J/ y8 p( L2 Y% y$ D   
0 N7 d/ W2 J7 e+ g; H" v, {    // Create the list of simulation actions. We put these in
3 S6 e" T% a4 k' Y  {  e% \# X6 _    // an action group, because we want these actions to be
' S  \+ t4 m- \% K  G  c2 D    // executed in a specific order, but these steps should
: E0 u5 ]& ]- h! d5 \  d0 p) }    // take no (simulated) time. The M(foo) means "The message/ `" G  f" U6 j" |- r
    // called <foo>". You can send a message To a particular1 [1 s$ p6 l" `- U; S
    // object, or ForEach object in a collection.
' W7 x& m' {7 n9 j. k7 n$ ?" |        
" B0 c7 T0 `/ F& `) `; x( a    // Note we update the heatspace in two phases: first run
0 ]) o! F' f+ y5 w+ `/ M* \/ i    // diffusion, then run "updateWorld" to actually enact the
  s: Q0 E2 A% ^9 [    // changes the heatbugs have made. The ordering here is/ b1 ?  ?( q' e2 M
    // significant!4 h# }. Q1 H% _; G0 q+ P
        
# m$ F) V7 v/ N/ f  F    // Note also, that with the additional8 |. r& n" w  V  C2 _) Z' w
    // `randomizeHeatbugUpdateOrder' Boolean flag we can% t, a3 K( l9 g& w9 I/ T( C, H
    // randomize the order in which the bugs actually run- ]% G+ j8 Z# v3 J6 R
    // their step rule.  This has the effect of removing any
+ y4 M8 \& `4 I3 {; c9 l    // systematic bias in the iteration throught the heatbug
, r' m/ N- ]4 f7 W0 s/ {    // list from timestep to timestep/ P/ G0 H8 z6 H' U  R% a0 J: L
        # u! n0 a' Q' e$ T. z
    // By default, all `createActionForEach' modelActions have
% ?: ], Y0 [# A! j  |    // a default order of `Sequential', which means that the
  ~% E& Y( Z3 I    // order of iteration through the `heatbugList' will be( h6 B* {3 Z1 h. m+ Y; J' O
    // identical (assuming the list order is not changed
$ i5 r4 a2 Y1 J, H# u! K$ ?    // indirectly by some other process).3 n. M4 ]- Z+ y4 L3 X0 |
    ( C3 j* E/ R+ f/ ?; @
    modelActions = new ActionGroupImpl (getZone ());
' _9 Z$ Z+ U; `7 O/ K
; P; `* D( ?8 u" Q- C* R6 l    try {
3 ?' M- s0 i. O& d6 y      modelActions.createActionTo$message! `0 M" a+ d# B
        (heat, new Selector (heat.getClass (), "stepRule", false));8 T* @4 y% s, a  B& {! s" `$ j7 g
    } catch (Exception e) {) v0 n6 c0 ^7 J3 `) y' ^9 z9 W
      System.err.println ("Exception stepRule: " + e.getMessage ());) x+ v& _0 ]/ B" U/ _+ z: f# K
    }# G3 L+ b1 V0 o

& ?+ C' n! g: J8 }4 U    try {
4 V2 V2 K4 J% J/ i/ f* M      Heatbug proto = (Heatbug) heatbugList.get (0);: `" i- Y6 x" R( c+ D" q  ]
      Selector sel = % L' E( ]  k, ?# k
        new Selector (proto.getClass (), "heatbugStep", false);8 N7 h' a; G$ \
      actionForEach =
( W* T# ^+ w, j" m/ [- Z0 ^        modelActions.createFActionForEachHomogeneous$call
% W4 ]" d- j' T        (heatbugList,4 d; k! U  `% @9 P. o
         new FCallImpl (this, proto, sel,5 U1 ^. k3 o5 [8 h  }' h
                        new FArgumentsImpl (this, sel)));
% O4 @) m3 L# ^, h$ C5 Z    } catch (Exception e) {
0 g/ |7 c; L. |  J6 c. o      e.printStackTrace (System.err);& x0 A2 T5 V' [1 b
    }
7 B1 j* m$ S4 H" f3 X8 E/ d    # ~6 q+ ~" }1 v
    syncUpdateOrder ();
6 a# R4 b" k$ L5 \# x2 w3 ]! p; X" t. u, W7 h# X
    try {1 }5 m+ @5 n! ^; j
      modelActions.createActionTo$message 6 ~' {8 O# h: m) |( f! K$ ]7 s
        (heat, new Selector (heat.getClass (), "updateLattice", false));
" U+ v, ]" Y/ }, O. v( c6 |    } catch (Exception e) {
3 R# {/ |$ R2 a; @5 Y& k      System.err.println("Exception updateLattice: " + e.getMessage ());  b' U) J  V; y( m9 }
    }) E+ R1 X4 c/ v2 l; L
        8 r# b+ C% a7 _4 T
    // Then we create a schedule that executes the$ ?8 T% T# k6 |/ |$ E  R, r
    // modelActions. modelActions is an ActionGroup, by itself it% f+ W% @  M- U+ W
    // has no notion of time. In order to have it executed in5 Q% u4 w# {2 t+ t# m
    // time, we create a Schedule that says to use the/ S+ E5 F- [8 ]' r. x$ e. x, y; N# V7 I
    // modelActions ActionGroup at particular times.  This& P) s7 a1 t/ {3 ]7 H
    // schedule has a repeat interval of 1, it will loop every+ Q# O+ m" Y, ^0 |6 ~" D% B
    // time step.  The action is executed at time 0 relative to- H* H; e* m, Z
    // the beginning of the loop.
. X; c  B- B7 h: `1 _5 ~* I
8 A' B. A5 w( a8 @+ H$ ]% r: M    // This is a simple schedule, with only one action that is
' T# U- F# W0 S& p    // just repeated every time. See jmousetrap for more6 I6 x- u- m; N, S* [+ e
    // complicated schedules." r! D* {* _) J* x7 n* l
  * Z: g  o6 [6 l: |* |
    modelSchedule = new ScheduleImpl (getZone (), 1);: q; U3 y+ e4 p4 @
    modelSchedule.at$createAction (0, modelActions);
2 L  [* D: F; K5 x* z8 c9 x        8 ~) N' Y, H  H, W' B2 ^% g, r) T
    return this;
, l8 L( A8 d: d/ Q  }
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, 2025-12-3 10:38 , Processed in 0.017514 second(s), 12 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表