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: 9367|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:
* F8 H' r6 @7 c/ ]. u% u- `7 c0 }9 }2 F% f4 @1 X. B0 `+ E
public Object buildActions () {" g# Y8 m( q$ J- f
    super.buildActions();
1 H3 E* ^1 \( g    6 S3 C5 o) K; e  n  ?
    // Create the list of simulation actions. We put these in0 v% b0 a+ ?+ w+ }/ }. t
    // an action group, because we want these actions to be, C/ \' b0 w! B$ q% V! z
    // executed in a specific order, but these steps should
$ Y  D& E  x9 F+ z5 k" K5 i% `    // take no (simulated) time. The M(foo) means "The message, I5 ]: ]# c+ [9 k3 ]
    // called <foo>". You can send a message To a particular
7 O) D; E, {2 ?+ ~  D, c    // object, or ForEach object in a collection.
/ ], m; P5 u3 q) a0 Q: x2 |        
6 C) M1 C. M1 d6 T5 d    // Note we update the heatspace in two phases: first run
+ O* y# w* S" f* O6 ?" a    // diffusion, then run "updateWorld" to actually enact the. T0 _+ H2 h/ x9 ^; }# @, {
    // changes the heatbugs have made. The ordering here is
$ G! i9 u0 ]' V    // significant!" z1 ?: G) x; y$ K
        $ s! @" [2 |, L& R! x  F, ^
    // Note also, that with the additional( v  d( n1 o1 r( W! n: ~6 {# m
    // `randomizeHeatbugUpdateOrder' Boolean flag we can
, ^# R2 V+ m% t" i    // randomize the order in which the bugs actually run
7 s; Z4 f9 r% W- l7 R0 T    // their step rule.  This has the effect of removing any$ |9 D' r- C& o5 o/ J
    // systematic bias in the iteration throught the heatbug
8 a2 w3 L) B. E  q9 y    // list from timestep to timestep
, C2 p, w9 S. t$ O- G        
9 Z+ N2 z) M* j    // By default, all `createActionForEach' modelActions have5 z* ?1 R) [9 Y+ Z! o7 i) w
    // a default order of `Sequential', which means that the
5 |) f4 `8 ]* S$ M  Q' s: z) E1 K2 F    // order of iteration through the `heatbugList' will be
: t- q% @2 H2 l9 q    // identical (assuming the list order is not changed, L0 o) t% d- L
    // indirectly by some other process).4 a3 C$ p( R, _1 d5 e: s$ ^
   
3 d" }' Z+ P& X5 D: L; Z8 W/ v9 O    modelActions = new ActionGroupImpl (getZone ());
4 x8 |, |4 r& Y$ I
+ R) f8 k' c6 o' R    try {; e: {) r) {; W, E9 W
      modelActions.createActionTo$message
) ^: N2 f) Z  u$ @# }, _4 ^2 D6 t        (heat, new Selector (heat.getClass (), "stepRule", false));
! O8 G9 O  _) @: ^    } catch (Exception e) {% d. W# T- j7 a, l$ x8 k3 c6 e) h
      System.err.println ("Exception stepRule: " + e.getMessage ());( y7 t. z& G2 u1 C0 o! |
    }
' D8 g( V& F% J7 U8 I% }. W, `; r1 c" f$ y2 B% m
    try {
. \3 v& ]% s. _8 v* y. X# E      Heatbug proto = (Heatbug) heatbugList.get (0);9 S8 w7 B. T, f( e7 d, }
      Selector sel =
& L2 B2 F6 o, \) x1 d3 @# g! [; p1 T        new Selector (proto.getClass (), "heatbugStep", false);
& h( L; E& C9 r$ s$ Q' [% v& T      actionForEach =/ d0 G, s" c$ P% c) V
        modelActions.createFActionForEachHomogeneous$call3 I: @' |& o; |: f
        (heatbugList,
. T3 w* W9 Y" Q/ G( P2 V% C# I3 J' a         new FCallImpl (this, proto, sel,
2 y8 J/ t. v5 H7 z9 p5 s. @6 D4 Q) H                        new FArgumentsImpl (this, sel)));, V" E/ i- ?8 O* n/ Q; N
    } catch (Exception e) {
0 o& {& ^) x: o" Z7 R4 g- Q' C      e.printStackTrace (System.err);: ]& L2 n3 w2 I/ h& {* p& E8 @
    }
2 Y" [+ a# I4 f' q4 _    , j2 D% I& [3 ?) c7 a, a2 o( R  j
    syncUpdateOrder ();
1 W- I4 b7 K# s$ ^: ?& O# e/ l: X
    try {
0 L3 ]7 Q0 X! Q      modelActions.createActionTo$message
4 Z% X( B+ I7 U' L+ X        (heat, new Selector (heat.getClass (), "updateLattice", false));+ O  Z8 ]+ ?# E
    } catch (Exception e) {
; x! J$ b7 i2 y; u      System.err.println("Exception updateLattice: " + e.getMessage ());* Z" [5 z3 m6 q6 j' h( s
    }: L6 K7 B1 q8 a" w2 F9 Y# F7 Q
        ) R4 s/ }6 H. {" s- C) t
    // Then we create a schedule that executes the
' k% x8 v% B! ?8 V0 F    // modelActions. modelActions is an ActionGroup, by itself it
7 V6 o: x$ I: L# N- [4 p2 Z    // has no notion of time. In order to have it executed in
- L! O2 R: g& \* Y  e; T    // time, we create a Schedule that says to use the( H- ~" P3 E6 b9 \
    // modelActions ActionGroup at particular times.  This- m& {8 E6 R+ O" h
    // schedule has a repeat interval of 1, it will loop every
8 F7 L6 T, J! p/ H4 H% @* A    // time step.  The action is executed at time 0 relative to9 |$ i, h* C" z9 y5 m* A
    // the beginning of the loop.
0 n" p: T) L9 v4 I4 c" w7 j. D
    // This is a simple schedule, with only one action that is
$ j* X! Z" N% p  K% n" |# @    // just repeated every time. See jmousetrap for more  f! b$ x2 _% N; \
    // complicated schedules." u7 P& k+ O  U0 z
  6 X& i9 J  \: x& P6 q
    modelSchedule = new ScheduleImpl (getZone (), 1);- t8 z' r) q5 |: {' P! e
    modelSchedule.at$createAction (0, modelActions);
5 \4 j! ?5 b. N! s; H# u        
: w$ D$ F& L$ Y) \3 V( H( e    return this;
6 s* P- A: [# s2 `+ Z% h* Y7 J  }
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, 2026-2-26 06:04 , Processed in 0.013713 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