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: 9968|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:! Y$ W8 Z# H6 D% y2 y. ~

1 y+ R% \6 m: P/ Q- J1 k( T public Object buildActions () {
/ U2 ^. x# }) c, \% r    super.buildActions();
6 n6 d. E9 ^9 J/ I+ S3 Q   
! l3 h9 V* u2 ~6 C    // Create the list of simulation actions. We put these in
' Q0 L; ~% w" b. K5 n    // an action group, because we want these actions to be2 q. o. F' Z: Y' }' ^0 i  P# d( m  w
    // executed in a specific order, but these steps should! q6 A7 D( f( z: |" f1 c4 `
    // take no (simulated) time. The M(foo) means "The message
. s4 {6 z5 c. x. ^1 {' ^- \+ Q    // called <foo>". You can send a message To a particular
2 t% W* J1 {+ Y    // object, or ForEach object in a collection.- I, I2 T; `' h  S8 n6 D
        ! o, S8 U% I$ M7 T! |/ D0 o; l
    // Note we update the heatspace in two phases: first run: S  {8 k. O) \% [4 O6 H1 k
    // diffusion, then run "updateWorld" to actually enact the
/ H  {8 g9 T% m5 m# B( o' h    // changes the heatbugs have made. The ordering here is3 Y+ |- L7 m1 P/ p# h9 B
    // significant!* R8 g( i0 k% j
        1 q4 C; z5 I1 ]
    // Note also, that with the additional3 h% Z4 |/ d4 H9 |  c! b
    // `randomizeHeatbugUpdateOrder' Boolean flag we can
, x6 _# M* O* U$ d    // randomize the order in which the bugs actually run' B: o3 q3 @& a2 b
    // their step rule.  This has the effect of removing any
( O" `" \+ R/ R) d+ w, k    // systematic bias in the iteration throught the heatbug" h- c  n3 w# q# I6 B' S1 ?
    // list from timestep to timestep! G/ l7 T$ A$ D5 F7 C" B+ `
        8 G8 m' x) c" X
    // By default, all `createActionForEach' modelActions have
2 v3 x; _% z0 p+ M+ ]; l; l    // a default order of `Sequential', which means that the
) x: e/ W5 f2 ~% ~  ~    // order of iteration through the `heatbugList' will be
' {& ]5 d2 M3 P; t+ k    // identical (assuming the list order is not changed* f! G( I6 b1 |5 s
    // indirectly by some other process).# B5 ?: n; x  ~2 I4 ?" a9 g) i
   
% q; U$ \1 j9 o* V4 r$ y    modelActions = new ActionGroupImpl (getZone ());5 M2 U2 ^  ^- k" P

8 a5 m& C9 b8 X% K% W" u. p7 m8 O3 q    try {
% n& W# R' t- a8 h* B8 k2 p% ?# f      modelActions.createActionTo$message: V  a, \; W0 x& q, c# D9 K/ s7 k
        (heat, new Selector (heat.getClass (), "stepRule", false));7 \& @, B% @# D
    } catch (Exception e) {5 ]! Y# K$ T+ [: o+ E' P4 V
      System.err.println ("Exception stepRule: " + e.getMessage ());
. k6 K7 O% M2 E5 n    }
5 G7 |9 U6 T: e, g0 R4 \* O% u5 o
3 H0 N# R+ Z, h9 L    try {& c0 Y8 G* F) a5 ~( u3 A
      Heatbug proto = (Heatbug) heatbugList.get (0);$ ]3 {. c& I1 Y+ B: Z3 g' ^
      Selector sel =   w/ T9 W# K! J
        new Selector (proto.getClass (), "heatbugStep", false);1 }2 ^$ W& i7 D7 T: Q4 ^% R
      actionForEach =
7 B6 c% A5 Q' J; B        modelActions.createFActionForEachHomogeneous$call* [' G3 Y! @# l7 g
        (heatbugList,2 }# B3 F5 B8 q5 b3 z0 D' x
         new FCallImpl (this, proto, sel,
: o0 l/ V8 p1 L! _6 \                        new FArgumentsImpl (this, sel)));
% @. o6 V  ~) j3 G1 p* z, j    } catch (Exception e) {
& M: a0 u, }. w3 B      e.printStackTrace (System.err);+ w0 t! G6 n' @
    }. r" @' b5 n5 y
   
" H+ n( b: ]$ n    syncUpdateOrder ();0 V5 Y/ j- f/ M$ t9 A2 G

. E7 p0 r6 ]- Y+ E1 `    try {! @& i1 f9 J2 Q/ O
      modelActions.createActionTo$message 3 X+ z  _+ Y# q" [$ _' ~3 M6 ]6 j
        (heat, new Selector (heat.getClass (), "updateLattice", false));# c$ O7 P6 r7 p% Z
    } catch (Exception e) {2 w2 i# x4 i1 D5 y5 w# I. K2 H: h' y
      System.err.println("Exception updateLattice: " + e.getMessage ());
9 \5 T0 [( A1 w) t    }
8 ^; m" P4 {( i  T        ) J* V; v1 K1 m
    // Then we create a schedule that executes the& J' A3 A  U/ M% p# W. E: F8 j
    // modelActions. modelActions is an ActionGroup, by itself it/ m; W; j0 S4 V! g3 L) x; }0 t- C
    // has no notion of time. In order to have it executed in" V) I& q! k2 F2 `% G
    // time, we create a Schedule that says to use the
9 {* }0 V7 ?/ O' @    // modelActions ActionGroup at particular times.  This0 f* ?- L' ?1 @6 D: E* v) `
    // schedule has a repeat interval of 1, it will loop every
& ?2 G5 Y+ }0 Y, z# Z1 V    // time step.  The action is executed at time 0 relative to2 A0 e7 M! X# Z* x0 z2 ~( P0 W! v
    // the beginning of the loop.  _  B+ ?9 y4 e0 w  p

* K& ~- ^; s4 f: B    // This is a simple schedule, with only one action that is
8 @8 o( @- ^6 C/ `( U6 R    // just repeated every time. See jmousetrap for more
! w' J& v+ G6 |4 d- ]    // complicated schedules.
- o: R( L: x) x" Q: M. g- R  
/ I' [. ^; ]% }2 g: I    modelSchedule = new ScheduleImpl (getZone (), 1);
. p+ v9 `0 \, q. J( {    modelSchedule.at$createAction (0, modelActions);
3 W0 Z, Z& y+ ]/ O3 R# _2 @        
' X6 S2 n/ G2 _( k$ Q: p    return this;+ W$ q, k7 P7 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, 2026-4-5 02:16 , Processed in 0.015717 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