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: 12445|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:+ w! m3 x$ i( ]  v& [
3 h5 Z0 Q6 {/ W* o0 S8 d6 d9 S  X" Y
public Object buildActions () {. P4 t$ z' A8 q3 m# F) x
    super.buildActions();( {$ \# a0 C/ e' s. {
   
$ X4 g5 z8 b. x. @/ [    // Create the list of simulation actions. We put these in
) g6 I& ]# w! ~. P0 b) O, p. W    // an action group, because we want these actions to be
3 l5 g, ~; j/ H- C+ @) M    // executed in a specific order, but these steps should
  i8 {3 O9 F; W0 ^; M0 l    // take no (simulated) time. The M(foo) means "The message
. A. b- {/ d6 O: }; y% d; B) f    // called <foo>". You can send a message To a particular
" r7 ^6 V  H$ M& k& ?6 M, U0 v    // object, or ForEach object in a collection.
' _: C" ~/ X% A% Z2 q$ Y7 n        
% D! D; T! S0 d. @1 V, C/ [    // Note we update the heatspace in two phases: first run
+ ?+ G/ y) U. Y* ^# ^# U    // diffusion, then run "updateWorld" to actually enact the9 \8 q/ @3 E4 u/ [9 v# p
    // changes the heatbugs have made. The ordering here is
: A% C+ [& L$ Z# A, P6 l% j    // significant!. j0 t/ y4 T5 R: l( C
        
0 q  }0 ^! N6 ?3 W$ Y    // Note also, that with the additional
7 j2 b0 W- A, R% e& I; k3 D    // `randomizeHeatbugUpdateOrder' Boolean flag we can
: ?& l) q  ^, i  P1 X    // randomize the order in which the bugs actually run
1 N4 @8 |3 ]& g3 b    // their step rule.  This has the effect of removing any3 A& z2 m! ?* m! I
    // systematic bias in the iteration throught the heatbug
( ?& F3 o) d# Q1 h6 T" I    // list from timestep to timestep
. S6 O0 Y0 F* P- P3 ~        
2 G3 e  c9 W' N, i6 o    // By default, all `createActionForEach' modelActions have
  R: Z4 @" ^$ g: y4 m( q, q. a! J8 q    // a default order of `Sequential', which means that the
7 A' @/ X0 m% M+ ^; I    // order of iteration through the `heatbugList' will be
5 y% L$ N# y. e5 [$ h. l/ d5 [    // identical (assuming the list order is not changed- L; F7 }$ r0 n* i2 a1 H
    // indirectly by some other process).
# o! b# J% c6 l) f0 q4 z    . p6 N' M( w" A2 j
    modelActions = new ActionGroupImpl (getZone ());! Y& ~. K# j! w5 o% a0 l2 E) T
0 T( ]& A5 Y5 \! v+ G, F* V
    try {8 [& t) ^" T! s7 n, \6 n* E
      modelActions.createActionTo$message+ U! z& z# X+ ?* T& ]) u
        (heat, new Selector (heat.getClass (), "stepRule", false));" o1 y" y; y; }
    } catch (Exception e) {
6 O0 z5 E7 S$ I* J! E1 S      System.err.println ("Exception stepRule: " + e.getMessage ());
/ z) ~" A6 o  o% y, |. W& W    }8 x- _: i* B; Y( w& M, G

# B6 I" ^7 L- d    try {/ i. r; z$ j! ?4 r
      Heatbug proto = (Heatbug) heatbugList.get (0);2 P  D1 Z& ?% |5 G- m& w
      Selector sel =
0 _* E0 M: F; u2 @        new Selector (proto.getClass (), "heatbugStep", false);
' u4 ^% @: z& b% F      actionForEach =
- v( _0 L6 P7 D$ h  H5 E% i( J        modelActions.createFActionForEachHomogeneous$call
9 S* f! s' F( B, o. ~1 R9 O        (heatbugList,
' W3 {7 v- m9 t1 F# G         new FCallImpl (this, proto, sel,, f9 d: Z+ o  H. Y1 M# w
                        new FArgumentsImpl (this, sel)));: L# n; t2 @* I; L9 b/ B
    } catch (Exception e) {
% D5 u: C: S0 Z7 A/ \6 B/ L      e.printStackTrace (System.err);9 N- N: k+ g. o* D0 I
    }) T: a( e+ Q. r. t/ B; c) U
    1 k+ i( B0 g! p) V7 e- @* D4 N
    syncUpdateOrder ();" B$ y3 v, U- Z4 P8 x

8 {; n% A! i) g, Y5 J    try {
1 f* X; r5 d0 {# @      modelActions.createActionTo$message / W; s# v: Z1 ?1 n& O
        (heat, new Selector (heat.getClass (), "updateLattice", false));3 \/ {, k& h8 E" d
    } catch (Exception e) {
* J* ~1 E  b& j5 [( M      System.err.println("Exception updateLattice: " + e.getMessage ());. N) A. W, n/ e8 C0 W0 Z8 F
    }
8 o8 ?3 s/ R, K" P        ; ^3 v# U3 ?2 N8 c# J
    // Then we create a schedule that executes the3 p4 U; j  V& W7 Y
    // modelActions. modelActions is an ActionGroup, by itself it9 W6 b6 p# [$ h1 ~: a2 o" n9 a. r
    // has no notion of time. In order to have it executed in
2 Z% `2 H8 `* x2 ?) F    // time, we create a Schedule that says to use the2 o% f* f0 O8 A2 ~. z  Y( r* H1 f
    // modelActions ActionGroup at particular times.  This
! N7 g4 y7 D* B! r( I  i    // schedule has a repeat interval of 1, it will loop every; c) g* x" W4 A) M) j
    // time step.  The action is executed at time 0 relative to4 q! p5 y+ p" r) N* h: y
    // the beginning of the loop., f! j+ L4 W4 d% o9 U

, Q* R# B1 K$ z    // This is a simple schedule, with only one action that is2 K0 v9 p: u+ O2 S9 F
    // just repeated every time. See jmousetrap for more3 h* O( ~$ d$ M' s/ O; B+ [& F
    // complicated schedules.4 _0 T7 H: W! f2 y3 m* l: s
  5 y8 e$ \$ f) A! H; V3 V$ B5 I
    modelSchedule = new ScheduleImpl (getZone (), 1);4 A& D; J: {) f! b( {
    modelSchedule.at$createAction (0, modelActions);
# V1 B. i4 c% B: {. W$ `9 w/ y        1 S* T3 B+ m6 E
    return this;
$ s; t( O; X+ }  }
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, 2026-8-31 19:18 , Processed in 0.018646 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