Middle Ware 10

8/13/2019 Middle Ware 10

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DEVELOP A MIDDLEWARECOMPONENT FOR RETRIEVING

WEATHER FORECAST INFORMATION USING CORBA

AIM:To Create a Component for retrieving stock market exchange information usingCORBA

DESCRIPTION: Steps required:

1. efine the !" interface

#. !mp$ement the !" interface using id$% compi$er

&. Create a C$ient 'rogram

(. Create a Server 'rogram

). Start or*d.

+. Start the Server.

,. Start the c$ient

// Define IDL Interface

modu$e -eather

interface forecast

f$oat get/min02 f$oat get/max023232Nte: Save the a*ove modu$e as -eather.id$Compi$e the saved modu$e using the id$% compi$er as fo$$o-s .

C:!"#$i!#eat%er&i'() #eat%er*i'(

After compi$ation a su* director4 ca$$ed -eather same as modu$e name -i$$ *e createdand it generates the fo$$o-ing fi$es as $isted *e$o-.

C:5so-mi5-eather6cd -eather

C:5so-mi5-eather5-eather6dir7o$ume in drive C has no $a*e$.

7o$ume Seria$ 8um*er is &(9A#,B,

irector4 of C:5su%i5-eather5-eather;&!R6 ..

;&


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C:5so-mi5-eather5-eather6

// I$+(e$ent t%e interfaceimport org.omg.CORBA.2import -eather.2

import %ava.uti$.2

pu*$ic c$ass -eatherimp$ extends forecast'OA

private ORB or*2

int rDEFne- intD1;E2 f$oat sDEFne- f$oatD1;E2

Random rrFne- Random02

pu*$ic void setORB0ORB vor*Fv23 pu*$ic f$oat get/min0

for0int iF;2i>1;2iGG

rDiEF=ath.a*s0rr.next!nt02

sDiEF=ath.round00f$oatrDiE;.;;;;;;;123

f$oat min2 minFsD;E2

for0int iF12i>1;2iGG

if 0min6sDiE min FsDiE2 3

f$oat mintempF=ath.a*s00f$oat0min)1;2iGG

rDiEF=ath.a*s0rr.next!nt02

sDiEF=ath.round00f$oatrDiE;.;;;;;;;12 3 f$oat max2

maxFsD;E2

for0int iF12i>1;2iGG

if 0max>sDiE

max FsDiE2 3

f$oat maxtempF=ath.a*s00f$oat0max)


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import org.omg.'orta*$eServer.'OA.2

import %ava.uti$.'roperties2

import -eather.2pu*$ic c$ass -eatherserver

pu*$ic static void main0StringDE args

tr4 ORB or*FORB.init0args?nu$$2

'OA rootpoaF'OAe$per.narro-0or*.reso$ve/initia$/references0HRoot'OAH2

rootpoa.the/'OA=anager0.activate02 -eatherimp$ ssFne- -eatherimp$02

ss.setORB0or*2

org.omg.CORBA.O*%ect refFrootpoa.servant/to/reference0ss2

forecast hrfFforecaste$per.narro-0ref2 org.omg.CORBA.O*%ect orfFor*.reso$ve/initia$/references0H8ameServiceH2

8amingContextIxt ncrfF8amingContextIxte$per.narro-0orf2

8ameComponent pathDEFncrf.to/name0HforecastH2

ncrf.re*ind0path?hrf2 S4stem.out.print$n0H-eather server is read4H2

or*.run023

catch0Ixception e

e.printStackTrace02333

// C(ient Pr-ra$import org.omg.CORBA.2

import org.omg.Cos8aming.2

import -eather.2import org.omg.Cos8aming.8amingContext'ackage.2

import %ava.uti$.2pu*$ic c$ass -eatherc$ient


String cit4DEFHChennai H?HTrich4 H?H=adurai H?HCoim*atoreH?HSa$em H32

Ca$endar ccFCa$endar.get!nstance02

tr4

ORB or*FORB.init0args?nu$$2

8amingContextIxt

ncRefF8amingContextIxte$per.narro-0or*.reso$ve/initia$/references0H8ameServiceH2 forecast frFforecaste$per.narro-0ncRef.reso$ve/str0HforecastH2

S4stem.out.print$n0H5t5t5tJ I A T I R O R I C A S TH2

S4stem.out.print$n0H5t5t5tKKKKKKKKKKKKKKKKKKKKKKKKKKKKKH2 S4stem.out.print$n02

S4stem.out.print$n0H5tATI T!=I C!TL !MIST "OJIST H2

S4stem.out.print$n0H5t TI='IRATNRI TI='IRATNRIH2


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for0int iF;2i>)2iGG S4stem.out.print0H5tHGcc.get0Ca$endar.ATI

Gcc.get0Ca$endar.=O8TGcc.get0Ca$endar.LIARGH HGcc.get0Ca$endar.ONRGH

HGcit4DiEGH HGH H2 S4stem.out.print0=ath.f$oor0fr.get/min0GH5t 5tHG=ath.cei$0fr.get/max02

S4stem.out.print$n02 33

catch0Ixception ee.printStackTrace02333

Compi$e the a*ove fi$es as

C:5so-mi5-eather6%avac .%avaC:5so-mi5-eather6start or*d ORB!nitia$'ort 1;); ORB!nitia$ost $oca$host

C:5so-mi5cor*a6start %ava -eatherserver ORB!nitia$'ort 1;); ORB!nitia$ost$oca$host

C:5so-mi5-eather6

-eather server is read4

C:5so-mi5cor*a6%ava -eatherc$ient ORB!nitia$'ort 1;); ORB!nitia$ost $oca$host

C:5so-mi5-eather6%ava -eatherc$ient ORB!nitia$'ort 1;); ORB!nitia$ost

$oca$host


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.De,e(+ a $i''(e#are c$+nent fr retrie,in- Stc Maret E0c%an-e infr$atin

1"in-CORBA

Aim:To develop a middleware component for retrieving stock market exchange

using CORBA.

Algorithm:1. Start the program. Create a class stock server ! activate the specified function.". Create a class stock client ! read choice such as #u$%sell! displa$.&. 'erform appropriate operations #ased on the choice.(. )n stock interface%declare the input function.*. Stop the program.


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De,e(+ a Mi''(e#are C$+nent fr Retrie,in- Stc Maret E0c%an-e

Infr$atin 1"in- CORBA

Stock Server.java

import StockApp.*;

import org.omg.CosNaming.*;import org.omg.CORBA.*;import org.omg.CORBA.Object;import org.omg.CosNaming.NamingContextPackage.*;import org.omg.PortableServer.*;import org.omg.PortableServer.POA;class StockImpl extens StockPOA!

private ORB orb;p"blic voi setORB#ORB j$!

orb % j;&p"blic o"ble inp"t#o"ble "nit' o"ble no$!

ret"rn #"nit * no$;&

&p"blic class StockServer!p"blic static voi main#String( )args$!

r+!ORB orb % ORB.init#args' n"ll$;POA rootPOA %POA,elper.narro-#orb.resolveinitialre/erences#0RootPOA0$$;rootPOA.t1ePOA2anager#$.activate#$;StockImplstockImpl % ne- StockImpl#$;stockImpl.setORB#orb$;Object objectRe/3 % rootPOA.servanttore/erence#stockImpl$;Stock stockRe/ % Stock,elper.narro-#objectRe/3$;org.omg.CORBA.Object objectRe/4 %

orb.resolveinitialre/erences#0NameService0$;NamingContext5xtncRe/ %NamingContext5xt,elper.narro-#objectRe/4$;String name % 0P30;NameComponentncPat1( ) % ncRe/.toname#name$;ncRe/.rebin#ncPat1' stockRe/$;S+stem.o"t.println#0Server is Rea+ 6 7aiting.....0$;orb.r"n#$;


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&

catc1 #5xception e$

!S+stem.o"t.println#05RROR809e$;e.printStackrace#$;&&&Stock Client.javaimport StockApp.*;import org.omg.CosNaming.*;import java.io.B"//ereReaer;import java.io.Inp"tStreamReaer;

import org.omg.CORBA.ORB;import org.omg.CosNaming.NamingContext5xt;import org.omg.CosNaming.NamingContext5xt,elper;p"blic class StockClient!static Stock stock;p"blic static voi main#String args( )$!String( ) "i3 % ! 0234:0' 0p33:?0&;String( ) p % !0,@C,0' 0In/os+s0'0,"tc10'0In/os+s0&;o"ble ( ) "nit % !?''?'&;

o"ble ( )nos1ares % !3


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S+stem.o"t.println#0@i Compan+ name t "nitt No.o/.S1arest total80$;/or #int i% % b"//ereReaer.reaKine#$;

/or #int i%


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&&

&break;case 48

S+stem.o"t.println#05nter Seller IJ80$;String str: % b"//ereReaer.reaKine#$;S+stem.o"t.println#05nter Compan+ Name80$;String str? % b"//ereReaer.reaKine#$;S+stem.o"t.println#0No o/ S1ares " -ant to b"+80$;o"ble o"b4 % Jo"ble.parseJo"ble#b"//ereReaer.reaKine#$$;S+stem.o"t.println#05nter t1e Seller i80$;String str % b"//ereReaer.reaKine#$;/or #int i%8S+stem.o"t.println#0tt Stat"s o/ NS580$;

S+stem.o"t.println#0t "i t Compan+name tt "nit tNo.o/.S1arettotal80$;

/or #int i%


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&S+stem.o"t.println#0Jo +o" -ant to contin"e MN80$;c1oice % b"//ereReaer.reaKine#$;&

-1ile #c1oice.eL"als#0+0$$;

&catc1 #5xception e$!S+stem.o"t.println#05RROR809e$;e.printStackrace#$;

&

&&

Stock.idlmo"le StockApp!

inter/ace Stock!

o"ble inp"t #in o"ble "nit' in o"ble rate$;&;

&;

OUTPUT:

58Corbaset PA,%PA,.; 58Corba;58Corbaset CKASSPA,%CKASSPA,.; 58Corba;58Corbailj Stock.il58Corbailj G/all Stock.il58Corbajavac *.java StockApp*.javaNote8 StockAppStockPOA.java "ses "nc1ecke or "nsa/e operations.Note8 Recompile -it1 GElint8"nc1ecke /or etails.58CorbaStart orb GORBInitialPort 3


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=enu Options

1. Bu4#. Se$$

&. isp$a4

Inter 4our choice: 1Inter Bu4er !: =1#(

Inter Compan4 8ame: utch

8o.of.shares 4ou -ant to *u4: )Inter the Se$$er !: 1

o 4ou -ant to continue 4


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'$1@; !nfos4s +.; (.; #(.;

=9@; utch ).; ,.; &).;

&() !nfos4s +.; 9.; (9.;

o 4ou -ant to continue 4


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De,e(+ a Mi''(e#are C$+nent fr Retrie,in- Weat%er Freca"t Infr$atin1"in- CORBA

Weat%erSer,er*)a,a

import org.omg.CORBA.ORB2

import org.omg.CORBA.O*%ect2

import org.omg.Cos8aming.8ameComponent2import org.omg.Cos8aming.8amingContextIxt2

import org.omg.Cos8aming.8amingContextIxte$per2

import org.omg.'orta*$eServer.'OA2

import org.omg.'orta*$eServer.'OAe$per2pu*$ic c$ass JeatherServer

pu*$ic static void main0StringD E args

tr4 ORB or* F ORB.init0args? nu$$2

'OA root'OA F

'OAe$per.narro-0or*.reso$ve/initia$/references0HRoot'OAH2

root'OA.the/'OA=anager0.activate02Jeather!mp$-eather!mp$ F ne- Jeather!mp$02

-eather!mp$.setORB0or*2

O*%ect o*%ectRef1 F root'OA.servant/to/reference0stock!mp$2Jeather -eatherRef F Jeathere$per.narro-0ref2

org.omg.CORBA.O*%ect o*%ectRef# F

or*.reso$ve/initia$/references0H8ameServiceH28amingContextIxtncRef F

8amingContextIxte$per.narro-0o*%ectRef#2

String name F He$$oH2

8ameComponentnc'athD E F ncRef.to/name0name2ncRef.re*ind0nc'ath? -eatherRef2

S4stem.out.print$n0HServer is Read4 P Jaiting.....H2

or*.run023

catch 0Ixception e

S4stem.out.print$n0HIRROR:HGe2

e.printStackTrace02

3

S4stem.out.print$n0HServer Ixsisting:.....H2


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3

3

Weat%erI$+(*)a,aimport org.omg.CORBA.ORB2

pu*$ic c$ass Jeather!mp$ extends Jeather'OA

private ORB or*2

private dou*$e current2

private dou*$e min2

private dou*$e max2pu*$ic voidsetORB0ORB or*/va$

or* F or*/va$2

3pu*$ic voidad%ustTemp0dou*$e g

currentGFg2

if0current6 max

max Fcurrent2e$se if0current>min

min F current2

3

pu*$ic dou*$e get=ax0

return max2

3pu*$ic dou*$e get=in0

return min23

pu*$ic dou*$e getCurrent0

return current23

pu*$ic void ca$$10dou*$e dou*

min F max F current F dou*2

3

pu*$ic void shutdo-n0

or*.shutdo-n0fa$se2

3

3


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Weat%erC(ient*)a,a

import org.omg.CORBA.ORB2

import org.omg.Cos8aming.8amingContextIxt2import org.omg.Cos8aming.8amingContextIxte$per2

pu*$ic c$ass JeatherC$ient

static Jeather -eather2

pu*$ic static void main0StringD E args

dou*$eD ED E d1 F 1.)?(.#?).9?(.)3?#.&?,.9?+.#?(.,3?(.&?#.)?&.)?+.,3?).#?(.&?9.#?+.#332

String D E str F HChennaiH?H=um*aiH?He$hiH?HCa$cuttaH32tr4

ORB or* F ORB.init0args? nu$$2

org.omg.CORBA.O*%ecto*%ectRef For*.reso$ve/initia$/references0H8amingServiceH2

8amingContextIxtnamingContextRef F

8amingContextIxte$per.narro-0o*%ectRef2

String name F He$$oH2-eather F

Jeathere$per.narro-0namingContextRef.reso$ve/str0name2

-eather.ca$$10#;.;2S4stem.out.print$n0H5n5nH2

S4stem.out.print$n0H5t5t JIATIR ORICAST!8MH2

S4stem.out.print$n0H5t5t H2for 0int %F;2 %>(2 %GG

S4stem.out.print$n0H5n5nH2

S4stem.out.print$n0HCit4:HGstrD%E2for 0int iF;2 i>&2 iGG

-eather.ad%ustTemp0d1D%EDiE23

S4stem.out.print$n0H5t5t =aximum

Temperature:HG-eather.get=ax02S4stem.out.print$n0H5t5t =inimum

Temperature:HG-eather.get=in02

3

-eather.shutdo-n02


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3

catch 0Ixception e

S4stem.out.print$n0HIRROR:HGe2


3

3

Weat%er*i'(

modu$e JeatherApp

interface Jeather

void ad%ustTemp0in dou*$e r2dou*$e getCurrent02

dou*$e get=ax02dou*$e get=in02

void ca$$10in dou*$e k2

one-a4 void shutdo-n0232

32

OUTPUT:

I:5Cor*a6set 'ATFQ'ATQ.2 I:5Cor*a2I:5Cor*a6set C"ASS'ATFQC"ASS'ATQ.2 I:5Cor*a2

I:5Cor*a6id$% Jeather.id$

I:5Cor*a6id$% fa$$ Jeather.id$I:5Cor*a6%avac .%ava JeatherApp


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=inimum Temperature: 19.(

Cit4: I"!

=aximum Temperature: #@.@=inimum Temperature: 19.(

Cit4: O"ATTA

Date Time Server Ti!eServer"n#.javainter/ace e/initionimport java.rmi.*;p"blic inter/ace imeServerIn/ extens Remote! p"blic String $etTi!e%&t1ro-s Remote5xception;&

Ti!eServer"!'l.javaimport java.rmi.*;import java.rmi.server.*;p"blic class imeServerImpl extens @nicastRemoteObject implements

imeServerIn/ !

p"blic imeServerImpl#$ t1ro-s Remote5xception ! s"per#$; &

p"blic String $etTi!e#$!

ret"rn ne- java."til.Jate#$.toString#$; &

p"blic static voi main# String args() $ t1ro-s 5xception!

S+stem.err.println# 0InitialiQing server8 please -ait.0 $;

Na!in$.re(ind% )**local+o,t*Ti!e)- ne Ti!eServer"!'l%& $;

S+stem.err.println#01e ime Server is "p an r"nning.0 $; &&

Ti!eClient.javaimport java.rmi.*;

p"blic class imeClient !

p"blic static voi main# String args() $ t1ro-s 5xception! Ti!eServer"n# t, / %Ti!eServer"n#&Na!in$.look0'% )**local+o,t*Ti!e) &1 S+stem.o"t.println#t,.$etTi!e%&$; &


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Ti!eClient O0t'0t1e time is8 "e "n 3 338> 5J 4C$ient!nterface6 c$ients F ne- Arra4"ist>C$ient!nterface602

pu*$ic Server0 thro-s RemoteIxception

3

pu*$ic void $ogin0C$ient!nterface c$ient? String nickname thro-s

RemoteIxception

*roadcast=essage0H6 H G nickname G H is entering the chatroomH? HH2

c$ients.add0c$ient23

pu*$ic void *roadcast=essage0String message? String nickname thro-sRemoteIxception

for 0int i F ;2 i > c$ients.sie02 iGG

C$ient!nterface c F c$ients.get0i2tr4

c.get=essage0message? nickname2

3 catch 0RemoteIxception e

$ogout0c2

i F i 12

33

3


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pu*$ic void $ogout0C$ient!nterface c$ient

c$ients.remove0c$ient2

3


tr4

8aming.re*ind0HServerH? ne- Server02

S4stem.out.print$n0HServer is read4H23

catch 0Ixception e


33

Ser,er Interface

import %ava.rmi.2

pu*$ic interface Server!nterface extends Remote

pu*$ic void $ogin0C$ient!nterface c$ient? String nickname thro-s

RemoteIxception2

pu*$ic void *roadcast=essage0String message? String nickname thro-s

RemoteIxception23

C(ient Interface

import %ava.rmi.Remote2

import %ava.rmi.RemoteIxception2

pu*$ic interface C$ient!nterface extends Remote

pu*$ic void get=essage0String message? String nickname thro-s

RemoteIxception2

3


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GUI

import %ava.a-t.event.2import %ava.net.2

import %ava.rmi.2

import %avax.s-ing.2

pu*$ic c$ass MN! extends %avax.s-ing.rame

private C$ient c$ient2


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private void initMN!0

tr4

%Scro$$'aneistor4 F ne- Scro$$'ane02

getContent'ane0.add0%Scro$$'aneistor42%Scro$$'aneistor4.setBounds0,? ,? &,9? #;&2

%Scro$$'aneistor4.setorionta$Scro$$Bar'o$ic40Scro$$'ane.OR!VO8TA"/SCRO""

BAR/8I7IR2

istor4 F ne- TextArea02istor4.set"ineJrap0true2

istor4.setIdita*$e0fa$se2

%Scro$$'aneistor4.set7ie-port7ie-0istor42

33

=essage F ne- Textie$d02

getContent'ane0.add0=essage2

=essage.setBounds0,? #1,? &,9? (#2=essage.adde4"istener0ne- e4Adapter0

pu*$ic void ke4Re$eased0e4Ivent evt

=essagee4'ressed0evt2

332

3

setefau$tC$oseOperation0Jindo-Constants.!S'OSI/O8/C"OSI2

getContent'ane0.set"a4out0nu$$2

this.setTit$e0H=4R=!Chat H G nickname2this.setResia*$e0fa$se2

pack02

setSie0(;;? &;;2

3catch 0Ixception e


3

pu*$ic static void sho-=essage0String message? String nickname

if 0Unickname.equa$s0HH

istor4.append0nickname G H: H G message G H5nH2

e$se istor4.append0message G H5nH2


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3

private void =essagee4'ressed0e4Ivent evt if 0evt.gete4Code0 FF e4Ivent.7/I8TIR PP U

=essage.getText0.equa$s0HH

tr4 server.*roadcast=essage0=essage.getText0? nickname2

=essage.setText0HH2

3 catch 0RemoteIxception e e.printStackTrace02

3

3

33

C(ient

import %ava.rmi.RemoteIxception2

import %ava.rmi.server.NnicastRemoteO*%ect2pu*$ic c$ass C$ient extends NnicastRemoteO*%ect imp$ements C$ient!nterface

pu*$ic C$ient0 thro-s RemoteIxception

3

pu*$ic void get=essage0String message? String nickname thro-s

RemoteIxception

MN!.sho-=essage0message? nickname2

3

3


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Ti$e Ser,er

C(ient

import %ava.rmi.2

import %ava.net.2

import %ava.io.2pu*$ic c$ass C$ient

pu*$ic static void main0StringargsDEthro-s Ixception

tr4

String sFHrmi:


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return ne- %ava.uti$.ate0.toString02

33

Documents

Middle Ware 10