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: 10599|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:
9 O4 f% ^' z' ?# K( u) k! h' F
public Object buildActions () {
5 o/ n7 Y0 Q' O% @9 g1 F/ z3 J    super.buildActions();+ p; V" R* f+ B1 q
   
4 t" ?* i8 l8 w: w# J    // Create the list of simulation actions. We put these in1 O8 l0 o3 W9 y3 R9 A
    // an action group, because we want these actions to be4 a& N2 k* U; h- M, {) C
    // executed in a specific order, but these steps should8 X* D# C& E& `0 M2 \- `8 y: W6 q  Y
    // take no (simulated) time. The M(foo) means "The message
' l2 l) ~$ R0 D, j    // called <foo>". You can send a message To a particular
3 x% H4 V6 N9 D! ~3 |    // object, or ForEach object in a collection.
( M9 n2 a$ l; Q7 Y        * u6 K& m/ o  O' H! z& m# U) Q
    // Note we update the heatspace in two phases: first run
: `  X) ~% n- b# Q- n  |    // diffusion, then run "updateWorld" to actually enact the" C9 s) N% Z/ H$ @
    // changes the heatbugs have made. The ordering here is
, r7 T/ j2 B& y( u: m; w' o    // significant!$ ~6 q9 G7 C/ C4 E0 p
        , \+ r; Q' t( C( R
    // Note also, that with the additional
3 ~5 u; n8 f: C  t9 E+ n2 c( Q    // `randomizeHeatbugUpdateOrder' Boolean flag we can
/ j! n4 Q* o8 C7 ?! u3 Z5 L6 ~    // randomize the order in which the bugs actually run
& H4 e  ~0 U  Z; d( y    // their step rule.  This has the effect of removing any  ~- ?3 {% l& O- G
    // systematic bias in the iteration throught the heatbug
% t% w: x: Q3 B) ?: m' c    // list from timestep to timestep$ ^% A3 w5 [' E$ F* A9 O8 y' k
        
  X, ~& _! ~/ W5 ^8 S7 H% h    // By default, all `createActionForEach' modelActions have
) z: r7 G2 k4 L    // a default order of `Sequential', which means that the4 Y% Z- y. E1 w) B
    // order of iteration through the `heatbugList' will be9 a5 e5 Z5 v+ N& t" Z0 B: A8 y
    // identical (assuming the list order is not changed
- R6 v! {' }% M( f7 z8 V+ w2 q    // indirectly by some other process).
: W) R1 W# }3 D4 x( ?   
( Z0 z7 ?. k) W) j6 Y9 s4 v, s    modelActions = new ActionGroupImpl (getZone ());5 V. ]0 o2 X( D+ J# X% K+ L

# A3 _6 `7 s$ U$ I' |; F    try {
8 Q5 B0 J( Q% A1 z4 z' a      modelActions.createActionTo$message
& a, F3 g. ]4 J; o0 r+ D: V* Z  _        (heat, new Selector (heat.getClass (), "stepRule", false));
& X  ~# T. S" Z& [# L- q* H    } catch (Exception e) {6 _7 Q+ d+ v- i8 D# p( K% ^* B
      System.err.println ("Exception stepRule: " + e.getMessage ());
. |0 C" j: h" c/ F9 o" x$ Q& M    }
5 o4 g( E) I4 Q. c4 J3 E, Z$ F1 n
    try {
9 f+ Y' a: C8 q' C  I2 I      Heatbug proto = (Heatbug) heatbugList.get (0);
+ k% Y) c, g% A  H9 g$ g2 S8 T' Y      Selector sel = , n$ l% ]; y1 \) q
        new Selector (proto.getClass (), "heatbugStep", false);
* H4 H! D" k, T) B& `! s      actionForEach =: E7 T4 _2 L  X( |
        modelActions.createFActionForEachHomogeneous$call
' A; f8 F0 f" @" |* a) ?9 d  d0 v7 @        (heatbugList,5 h5 K" b  }2 t5 T( }, o
         new FCallImpl (this, proto, sel,
) t$ U2 }) m& F% ?# @- w- H# a' _                        new FArgumentsImpl (this, sel)));9 s' x* ^& U) S4 D9 D) r
    } catch (Exception e) {
" D% a. @3 `  u" z      e.printStackTrace (System.err);6 s& G( u( s, ]" H4 M4 p: {
    }
( U, k( H7 b# Y) ?' v+ }" x      F! \) d9 K% Q* y- v/ r
    syncUpdateOrder ();
8 ~" M! L, H, N# S
% n' L9 `4 }; l& J    try {
9 F2 ]" H, v" z' ?8 i9 \      modelActions.createActionTo$message
7 ]2 h; O. |+ ~4 A8 x4 e        (heat, new Selector (heat.getClass (), "updateLattice", false));
+ R! u- y/ e6 H9 k    } catch (Exception e) {
* G7 R; I/ ?! K( J* _      System.err.println("Exception updateLattice: " + e.getMessage ());" |% q$ X  _8 S1 t* i
    }6 w& n9 P% i% T6 e- _  L8 u
        
/ j* R9 ?) D; e7 X# @: c    // Then we create a schedule that executes the
) X4 k+ V3 t: A* L) z    // modelActions. modelActions is an ActionGroup, by itself it
9 [# h& W8 r' y. ?4 T/ J& L    // has no notion of time. In order to have it executed in
( W/ I) l4 q% V    // time, we create a Schedule that says to use the% A/ t# A1 L' H/ T
    // modelActions ActionGroup at particular times.  This
* c& ]$ _+ N1 ?8 W+ s9 S3 H- q    // schedule has a repeat interval of 1, it will loop every
2 ~) K7 [4 |2 h' B9 B    // time step.  The action is executed at time 0 relative to, G1 k+ S* ^( W: b% \
    // the beginning of the loop.2 T# J4 M2 b/ @4 F
5 x( b! t5 t$ z* v) h
    // This is a simple schedule, with only one action that is* k* ^8 A) @& A2 z4 [
    // just repeated every time. See jmousetrap for more
) K  o  p3 i2 u7 J0 q* x1 r) |    // complicated schedules.
$ A& I6 M4 `0 G: w! o! p  
# T* ]- ]$ B* I6 B    modelSchedule = new ScheduleImpl (getZone (), 1);, {2 _; Q; g) q( k) D; \" s' P
    modelSchedule.at$createAction (0, modelActions);1 t/ b. O3 x0 e" y. o% a1 t
        
# ]7 q9 Q, u) }0 U& H    return this;
& k8 H8 h1 P( g: I) [- b  }
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, 2026-5-8 08:14 , Processed in 0.016383 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