HC VIN CNG NGH BU CHNH VIN THNG C S TI THNH PH H CH MINH ---------------------------------------------

BO CO TT NGHIP H I HC Ngnh : Cng Ngh Thng Tin H : Chnh quy Nin kha : 2005-2009

ti : NGHIN CU WEB SERVICES COMPOSITION S DNG BPEL4WS M s ti : 405170081

Sinh vin thc hin : Hong Xun Tun M s sinh vin : 405170081 Ngi hng dn :TS. Tn Hnh

Nm 2009

LI CM N

Qua 4 nm hc tp,c s tn tnh ch bo ca cc thy c trong Hc vin trang b cho em nhng kin thc c hnh trang vo cuc sng. Trong 6 thng qua em xin chn thnh cm n thy Tn Hnh hng dn em lm ti ny v cc bn trong lp cng to iu kin em hon thnh lun vn Do thi gian lm n v kin thc cn hn ch nn khng th trnh khi nhng sai st. Em rt mong nhn c s ng gp kin ca Qu thy c v cc bn sinh vin. Em xin gi n Qu thy c li chc sc khe v thnh cng. Em xin chn thnh cm n! Sinh vin: Hong Xun Tun

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LI NI U Ngy nay, cng ngh thng tin ang l nn cng ngh mi nhn trong chin lc pht trin kinh t, xy dng t nc ca hu ht cc quc gia. Vi s pht trin ca internet v vi xu th hi nhp chung ca ton th gii, cc t chc, cc c s doanh nghip cn bt tay, phi hp hot ng v chia s ti nguyn vi nhau nng cao hiu qu hot ng. H thng ca cc t chc doanh nghip ngy cng tr nn cng knh hn vi vic trin khai hng lot cc ng dng phn tn da trn nhiu h nn, k thut, cng ngh khc nhau. Nhng nghin cu gn y cho thy rng: cc kh khn trong vic tch hp cc h thng c th c khc phc bng cch nh ngha thm mt tng tru tng cho cc h thng tin hc hin c v mi xy dng. Tng ny s c xy dng da trn cc chun ca web service. Cng ngh web service c th c dng xy dng cu ni giao tip cho cc h thng xy dng trn nhng h nn, s dng nhng cng ngh hay chun khc xa nhau, nh l .NET, J2EE, CORBA, WebSphere MQ, hay cc ng dng ng gi. Vic kt hp cc dch v trong m hnh SOA vi qun l cc tin trnh nghip v l mt gii php cho vic xy dng cc h thng tch hp.V th ngn ng BPEL4WS ra i p ng cho gii php trn. BPEL4WS c xy dng da trn ngn ng WSFL (Web Service Flow Language) ca IBM v ngn ng XLANG ca Microsoft, n k tha c nhng tnh nng ni tri ca hai ngn ng ny (tnh c cu trc ca XLang v kh nng m hnh ha ca WSFL ). Mc tiu ca ti ny Sinh vin Hong Xun Tun

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ContentsC S TI THNH PH H CH MINH..................................................................1BO CO TT NGHIP H I HC ....................................................................1

Hnh1.1 M hnh CORBA9.8 CHNG I:HIN TRNG.........................................................................................101.1. Phn tch, nh gi mt s m hnh kin trc phn tn hin ti ...............10

Hnh1.1 M hnh CORBA .........................................................................................11 Hnh 1.2 M hnh EJB ...............................................................................................12 Hnh 1.3 M hnh DCOM ..........................................................................................121.2 .Cc vn pht sinh, nguyn nhn v bin php khc phc:...................12 1.3. SOA v web service gii quyt vn tch hp nh th no:.....................13

Hnh 1.4 M hnh SOA s dng webservice ...............................................................14 CHNG II: WORKFLOW.......................................................................................142.1. Khi nim .................................................................................................. 14 2.2. ch li p dng workflow: ...........................................................................14 2.3. Cc dng workflow ....................................................................................15

Hnh 2.1 M hnh tun t:............................................................................................152.3.1.2.Song song (Parallel Split) ..................................................................15

Hnh 2.2 song song......................................................................................................162.3.1.3. ng b ho .....................................................................................16 2.3.1.4. Php chn loi tr (Exclusive Choice) ..............................................16

Hnh 2.4. M hnh chn loi tr....................................................................162.3.1.5. Trn n gin (Simple Merge) ..........................................................16

Hnh 2.5.M hnh trn n gin..................................................................................17Hong Xun Tun 05TH Trang 4

Bo co Thc tp2.3.1.6. Chn a nhnh (Multi-Choice) ..........................................................17

Hnh 2.6.M hnh chn a nhnh................................................................................172.3.1.7. Trn ng b ho .............................................................................17

Hnh 2.7.M hnh trn ng b ha............................................................................182.3.1.8. Trn a nhnh ..................................................................................18

Hnh 2.8.M hnh trn a nhnh.................................................................................182.3.1.9. Cc vng lp tu ...........................................................................18

Hnh 2.9.M hnh cc vng lp ty ..........................................................................19 CHNG III:TM HIU KHI QUT WEB SERVICE..........................................193.1.nh ngha web service: l mt cng ngh gi t xa c tnh kh chuyn cao nht hin nay: mang tnh c lp nn, c lp ngn ng. Do , cc chng trnh code bng cc ngn ng lp trnh khc nhau, chy trn cc nn tng (phn cng & OS) khc nhau u c th trao i vi nhau thng qua cng ngh ny.................................................................................................................... 19

Hnh 3.1.M hnh webservice n gin................................................203.2.c im ca webservice:...........................................................................20

Hnh 3.2. ng dng ca webservice trong thc t .....................................203.3.Cc thnh phn chnh trong Webservice:....................................................21 3.3.1.XML: XML l mt ngn ng m t vn bn vi cu trc do ngi s dng nh ngha .V hnh thc XML c k php ta nh HTML nhng khng tun theo mt c t quy c nh HTML. Do web service l s kt hp ca nhiu thnh phn khc nhau , do web services s dng cc tnh nng v c trng ca cc thnh phn ny giao tip vi nhau.V vy XML l mt cng c chnh yu gii quyt vn ny .T kt qa ny , cc ng dng tch hp v m tng cng s dng XML.Nh c kh nng tng hp ny m XML tr thnh kin trc nn tng cho vic xy dng web service...................................................21 3.3.2.WSDL -Web Services Description Language :........................................21

Hnh 3.3.M t wsdl........................................................................213.3.3.UDDI - Universal Description , Discovery and Intergration:...................21

Hnh 3.4.M hnh ca UDDI...............................................................223.3.4. SOAP - Simple Object Accesss Protocol................................................22

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Bo co Thc tp3.4.Xy dng web service:................................................................................23 3.4.1.1.Giai on xy dng............................................................................23

Hnh 4.1.Kin trc ca bpel process...........................................................................254.1.Ni dung c bn:.........................................................................................25 4.1.1.Cu trc ca bpel process:....................................................................25 4.1.2.Mi quan h vi cc Bussiness Partner:................................................27

Hnh 4.2. Cc thnh phn trong bpel process..............................................................274.1.3.Trng thi ca BPEL process:................................................................27 4.2.Cc Activie c bn:......................................................................................28 4.2.1.Invoke:..................................................................................................28 4.2.2.Receive:................................................................................................29 4.2.3.Reply:....................................................................................................29 4.2.4.Assign....................................................................................................30 4.2.5. Throw:..................................................................................................32 4.2.6.Empty:...................................................................................................32 4.3.Cc Active c cu trc.................................................................................32 4.3.1.X l tun t: ...................................................................32 4.3.2.iu kin :......................................................................................33 4.3.3.Thc thi vng lp :...................................................................34 4.3.4. Song song v x l cc iu khin l thuc: ............................34 4.3.5.X l a nhnh:....................................................................34 4.3.6.Scope (phm vi):...................................................................................35

CHNG 5: NG DNG CHO BPEL......................................................................365.1.M t nghip v:.........................................................................................36 5.2.Phn tch bi ton:......................................................................................36

Hnh 5.1.Lc hot ng........................................................................................375.3.Xy dng BPEL process:..............................................................................37 5.3.1.Xy dng cc webservice lin quan:.....................................................37

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Hnh 5.2.Interface ca web service airline webservice...................................385.3.2 WSDL cho BPEL Process:.......................................................................38

Hnh 5.3. Interface bpel process...................................................................................385.3.3 nh ngha cc Partner Link Types:.......................................................38 5.3.4.nh ngha quy trnh nghip v (Bussiness Process Definition).............39

Hnh 5.4. Lc tun t.............................................................405.4.Config engine v ci plug-in........................................................................40 5.4.1.Ci t Apache Tomcat:........................................................................41

Hnh 5.5 Thit lp bin mi trng.............................................................................42 Hnh 5.6 Start Tomcat 26.............................................................................................425.5.2.Ci t Axis2( phin bn nng cp ca Axis):c nhiu cch ci t axis2,n gin nht l chp tp tin axi2.war vo th mc C:\apache-tomcat5.5.27\webapps v restart li tomcat s thnh cng.Truy cp:http://localhost:8080/axis2 s c:........................................................43

Hnh 5.7.Khi ng Axis2...............................................................435.4.3.Ci t Eclipse WTP:..............................................................................43

Hnh 5.8 Thit lp Axis2 trong eclipse...................................................445.4.4 Ci t MySQL 4.1 v JDBC connector:..................................................44

Hnh 5.9. Lc c s d liu...................................................................................455.4.5.Ci t ODE Apache..............................................................................45 5.5.Thc hin:................................................................................................... 45 5.5.1.Chng trnh chnh:...............................................................................45

Hnh 5.10. Giao din thit k......................................................................................46 Hnh 5.11.WSDL ca web service airline....................................................................46 Hnh 5.12.Thit k partnerlink....................................................................................47 Hnh 5.13 config active ................................................................................48 Hnh 5.14. BPEL proccess..........................................................................................49 Hnh 5.15. active .................................................................................................49Hong Xun Tun 05TH Trang 7

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Hnh 5.16. config active ...............................................................................50 Hnh 5.17. Config WSDL cho bpel proccess..............................................................51 Hnh 5.18. config deploy.xml.....................................................................................525.5.2.Vit client gi BPEL:..............................................................................52

Hnh 5.19.M hnh bpel process tng t 1 web service.............................................53 Hnh 5.20.To web project client.................................................................................54 MC LC HNH: Hnh1.1 M CORBA9 Hnh 1.2 M hnh EJB hnh

.10

Hnh 1.3 M hnh DCOM ...11 Hnh 1.4 M hnh SOA s dng webservice13 Hnh 2.1 M hnh tun t.14

Hnh 2.3.M hnh ng b ha Hnh 2.2 song song

...15

....14 ..15 ..15 ..16

Hnh 2.4. M hnh chn loi tr Hnh 2.5.M hnh trn n gin Hnh 2.6.M hnh chn a nhnh

Hnh 2.7.M hnh trn ng b ha .17 Hnh 2.8.M hnh trn a nhnh .17

Hnh 2.9.M hnh cc vng lp ty .17 Hnh 3.1.M hnh webservice n gin.18 Hnh 3.2. ng dng ca webservice trong thc t 19Hong Xun Tun 05TH Trang 8

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Hnh 3.3.M t wsdl

20

Hnh 3.4.M hnh ca UDDI.20 Hnh 3.5.Cu trc SOAP .. 21

Hnh 4.1.Kin trc ca bpel process 24 Hnh 4.2. Cc thnh phn trong bpel process....26 Hnh 5.1.Lc hot dong.36 Hnh 5.2.Interface ca web service airline webservice....37 Hnh 5.3. Interface bpel process .38 Hnh 5.4. Lc tun t ..40 Hnh 5.5 Thit lp bin mi trng 41 Hnh 5.6 Start Tomcat 26 42 Hnh 5.7.Khi ng Axis2. 42 Hnh 5.8 Thit lp Axis2 trong eclipse...43 Hnh 5.9. Lc c s d liu ..44 Hnh 5.10. Giao din thit k ..45

Hnh 5.11.WSDL ca web service airline ...46 Hnh 5.12.Thit k partnerlink 46 Hnh 5.13 config active .47 Hnh 5.14. BPEL process 48 Hnh 5.15. active ..48 ..48

Hnh 5.16. config active . 49 Hnh 5.17. Config WSDL cho bpel process ..50 Hnh 5.18. config deploy.xmlHong Xun Tun

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Hnh 5.19.M hnh bpel process tng t 1 web service .. 52 Hnh 5.20.To web project client ...53

CHNG I:HIN TRNG1.1. Phn tch, nh gi mt s m hnh kin trc phn tn hin ti Ba kin trc phn tn ph bin nht hin ny l CORBA, DCOM v EJB. Cc kin trc ny l s m rng ca cc h thng hng i tng bng cch cho php phn tn cc i tng trn mng. i tng c th c khng gian a ch bn ngoi ng dng, hoc mt my khc vi my cha ng dng trong khi vn c tham chiu s dng nh mt phn ca ng dng. CORBA Common Object Request Broker Architecture: CORBA c nh ngha bi Object Management Group (OMG), l mt kin trc phn tn m, c lp nn tng v c lp ngn ng. CORBA Component Model (CCM) l mt ci tin ng k nhm nh ngha cc m hnh thnh phn so vi CORBA. N nh ngha ra quy trnh thit k, pht trin, ng gi, trin khai v thc thi cc thnh phn phn tn. CCM nh ngha khi nim Ports cho cc thnh t. Cc port ny c s dng kt ni cc thnh phn c sn vi nhau, to cc h thng phn tn phc tp hn. Mi thnh phn CCM c mt i tng Home chu trch nhim qun l chu k sng ca i tng v c trin khai bn trong mt trnh cha (container) u im ca CORBA l cc lp trnh vin c th chn bt k ngn ng, nn tng phn cng, giao thc mng v cng ngh pht trin m vn tho cc tnh cht ca CORBA. Tuy nhin CORBA s mt nhc im l n l ngn ng lp trnh cp thp, rt phc tp, kh hc v cn mt i ng pht trin c kinh nghim. Ngoi ra cc i tng CORBA cng kh c th ti s dng.

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Hnh1.1 M hnh CORBA

EJB - Enterprise Java Bean: Kin trc EJB l mt kin trc thnh t bn pha my ch dng cho vic pht trin v trin khai cc ng dng phn tn hng i tng c va v ln. Kin trc EJB c 3 tng vi tng u tin l tng trnh din, tng th hai l tng x l nghip v, v tng th ba l cc ti nguyn nh c s d liu my ch. Truyn thng gia cc i tng EJB thng qua Remote Method Invocation (RMI). Cc client khng bao gi tng tc trc tip vi cc bean. Thay v vy chng s s dng cc phng thc c nh ngha trong cc interface Remote v Home. Mi bean tn ti bn trong trnh cha, chu trch nhim vic to th hin mi, lu tr d liu v cc qun l khc. Trnh cha s triu gi cc phng thc callback ca mi th hin bean khi c s kin tng ng. Khng ging nh CCM, EJB khng nh ngha cc port kt ni trc tip gia cc thnh phn lin quan bi v mi bean bn trong trnh cha l mt thc th c lp khng c bt k rng buc no bn ngoi. EJB l mt kin trc tt cho vic tch hp cc h thng v n c lp nn tng nhng n cng gp vn l n khng phi l mt chun m, kh nng giao tip vi cc chun khc vn cn hn ch.

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Hnh 1.2 M hnh EJB DCOM Distributed Component Object Model: DCOM l mt m hnh phn tn d trin khai vi chi ph thp, h tr tigh coupling gia cc ng dng v h iu hnh. M hnh Component Object Model (COM) nh ngha cch thc cc cc thnh phn v client lin lc trao i vi nhau trn cng mt my. DCOM m rng COM bng cch s dng cc giao thc mng chun khi cn trao i d liu vi my khc trn mng. DCOM h tr kt ni gia cc i tng v nhng kt ni ny c th c thay i lc ang chy. Cc i tng DCOM c trin khai bn trong cc gi nh phn cha cc m lnh qun l chu k sng ca i tng v vic ng k i tng. DCOM mang n nhiu u im nh tnh n nh, khng ph thuc v tr a l, qun l kt ni hiu qu v d dng m rng, l mt la chn tt cho cc doanh nghip s dng cng ngh ca Windows chy cc ng dng c yu cu cao v s chnh xc v n nh. Tuy nhin, cc cng ngh ca Microsoft c mt nhc im ln l chng b gii hn trn nn tng Windows.

Hnh 1.3 M hnh DCOM 1.2 .Cc vn pht sinh, nguyn nhn v bin php khc phc: Ngy nay p lc t ln cc doanh nghip ngy cng ln: gim chi ph u t c s h tng, khai thc c hiu qu cc cng ngh c sn, phi c gng phc v yu cu caHong Xun Tun 05TH Trang 12

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khch hng ngy cng tt hn, p ng tt cc thay i nghip v, kh nng tch hp cao vi cc h thng bn ngoi Nguyn nhn chnh ca mi kh khn trn l: s khng ng nht v s thay i. Hu ht cc doanh nghip ngy nay u s hu nhiu h thng, ng dng, vi nhng kin trc khc nhau, xy dng vo nhng khong thi gian khc nhau v da trn nhng cng ngh khc nhau. phn vic ca mnh, sau ch vic tng hp thng tin tr v. Trong qu trnh kt hp chc chn s gp nhng kh khn nh: Khng kh nng qun l quy trnh nghip v Tn chi phi tch hp S lng ln nh cung cp v khch hng, l cha k cc i th cnh trnh, cc quy trnh nghip v phc tp S lng ln cc ng dng cn kt hp v qun l nh Enterprise Resource Planning (ERP), Supply Chain Management (SCM), v Product Data Management(PDM) . Qu nhiu nh dng d liu Vn bo mt :Trong khi nhng thay i vn lin tc xy ra Ton cu ho dn n tnh cnh tranh khc lit i hi phi rt ngn quy trnh sn phm tng u th cnh tranh vi cc i th. Nhu cu v yu cu khch hng thng xuyn thay i nhanh chng nhm cho ra cc sn phm c tnh cnh tranh lin tc xut hin trn th trng. Ci tin cng ngh dn n thay i cc thnh phn lin quan 1.3. SOA v web service gii quyt vn tch hp nh th no: Cng ngh XML v web service Nhng nghin cu gn y cho thy rng: cc kh khn trong vic tch hp cc h thng c th c khc phc bng cch nh ngha thm mt tng tru tng cho cc h thng tin hc hin c v mi xy dng. Tng ny s c xy dng da trn cc chun ca web service. Mt s gii php chung trong vic dng web service cho vn tch hp: Tch hp hng d liu: Xc nh thng tin d liu no cn c chia s (cc bng d liu, cc nh dng file v thng ip) Xy dng cc lc m t XML (Xml Schema) cho cc thng tin ny. S dng SOAP nh l nh dng ca thng ip. Tch hp hng chc nng/hm APIs: Xc nh cc phng thc t xa no s c th hin ra ngoi nh cc web service. nh ngha kiu d liu XML cho i s ca cc phng thc ny. S dng SOAP nh l nh dng thng ip. Tch hp hng thnh phn giao tip: nh ngha thng tin m t web service (WSDL) To ra cc i tng bc v thc hin nh x tng ng gia thnh phn giao tip va nh ngha vi d liu, thng ip v cc li gi hm APIs (cn c chia s) ca h thng hin hnh.

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Hnh 1.4 M hnh SOA s dng webservice CHNG II: WORKFLOW BPEL4WS l mt ngn ng chun cho vic thc hin cc quy trnh nghip v. tm hiu v cc quy trnh ny chng ta s i vo th gii workflow. C 2 cch hiu v workflow. Cch 1: workflow theo ngha rng, l 1 m hnh nghip v, trong cc cng vic c phn cng r rng, thc hin theo th t t sn. Khi nim workflow theo cch hiu ny c t lu v c ng dng rng ri trong cc ngnh cng nghip. Cch 2: Khi nim workflow trong khoa hc my tnh ng dng vo qun l tin trnh kinh doanh (tm hiu di y). 2.1. Khi nim Workflow l qu trnh t ng ha mt phn hoc ton b mt tin trnh kinh doanh. ngha ca workflow khi ny n gin ch l cc lung cng vic. H thng qun tr lung cng vic: qun l v thc thi cc m hnh lung cng vic thng qua vic thc thi cc phn mm. Gm 2 thnh t: + B phn h tr c t m hnh lung cng vic + B phn vn hnh m hnh c t 2.2. ch li p dng workflow: Li ch ca vic s dng worflow trong qun l tin trnh kinh doanh c lit k nh sau: + Tin trnh kinh doanh c vch ra r rng, v th trch nhim v nhng mi quan h cng tc c nh r. + D dng ti u ha cng vic kinh doanh v nhng nh ngha chnh xc trn.Hong Xun Tun 05TH Trang 14

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+ Tin trnh kinh doanh c chia nh thnh nhng module v nhng module ny c th t chc li theo m hnh workflow thch ng vi tin trnh kinh doanh chung, v th d dng thch nghi nhanh chng vi nhng thay i khng on trc c trong nhng yu cu v iu kin kinh doanh. + Workflow c th theo di hng ngy. + Workflow tch hp vi nhng ng dng hay nhng h thng khc vo tin trnh kinh doanh. + Workflow phn nh r quan h v trch nhim trong cng vic do n to ra nhng phn cng vic ring. + Theo d on, workflow s to nn nhng phng php, nhng k thut t nhiu ngun trong khoa hc my tnh cng nh qun tr hc. V d, k thut workflow lin quan n qun tr c s d liu, tnh ton client-server, giao din ngi dng, ng dng v kt hp cc h thng ph, qun l ti liu, gi lp, ti cau trc v thc tp kinh doanh 2.3. Cc dng workflow C rt nhiu dng workflow t n gin n nng cao.ng dng s ch p dng cc dng workflow n gin. +Cc dng n gin: 2.3.1.1. Tun t (Sequence): M t: mt hot ng trong lung cng vic c kch hot ngay sau khi 1 hot ng khc kt thc trong cng 1 tin trnh. V d: hnh vi gi ha n c thc hin ngay sau hnh vi gi hng ha Ci t: dng tun t c s dng m hnh cc bc lin tip trong cng 1 tin trnh ca lung cng vic. M hnh:Cng vicA Cng vic B

Hnh 2.1 M hnh tun t:

Cng vic B c thc hin sau khi cng vic A c hon thnh 2.3.1.2.Song song (Parallel Split) M t: 1 im trong 1 tin trnh ca lung cng vic l ni 1 cng vic c tch thnh nhiu cng vic con. Cc cng vic con c th c tin hnh ng thi cng lc vi nhau (song song nhau). V d: Sau khi hnh vi nhn tin hon thnh, hnh vi gi hng v hnh vi xut ha n s c kch hot v tin hnh ng thi M hnh:

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Hnh 2.2 song songCng vic B Cng vic A Cng vic C

2.3.1.3. ng b ho M t: 1 im trong lung cng vic l ni cc tin trnh hay cc cng vic con nhp li lm 1 tin trnh hay cng vic n. Trong dng m hnh ny, tt c cc lung i vo phi ch nhau ti im ng b ha. V d: Sau khi hnh vi gi hng v xut ha n c thc hin, hnh vi lu tr mi c kch hot. M hnh:Cng vicA

ANDCng vic B

Cng vic C

Hnh 2.3.M hnh ng b ha 2.3.1.4. Php chn loi tr (Exclusive Choice) M t: ti 1 im trong lung cng vic s din ra s la chn cng vic no s c kch hot tip theo trong 1 lot cc cng vic k tip V d: Sau khi cng vic kim th phn mm c thc hin, da vo kt qu kim th s quyt nh cng vic tip theo l lp trnh hay ng gi phn mm. M hnh:Cng vic B Cng vic A

Chon b hay c

Cng vic C

Hnh 2.4. M hnh chn loi tr 2.3.1.5. Trn n gin (Simple Merge) M t: 1 im trong lung cng vic l ni 2 hay nhiu nhnh gp nhau, khng c s ng b ha gia cc nhnh. V d: Cng vic lu tr c thc hin sau khi cng vic gi ha n hoc cng vic nhn ha n c thc hin. M hnh:Hong Xun Tun 05TH Trang 16

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Cng vic Cng vic

A

CCng vic

B

Hnh 2.5.M hnh trn n gin Ch thch: ch cn 1 trong 2 cng vic A hoc B c hon thnh th cng vic C s c kch hot + Cc dng nng cao: 2.3.1.6. Chn a nhnh (Multi-Choice) M t: Mt im trong tin trnh l ni m mt hoc nhiu nhnh c chn theo mt quyt nh hoc da trn d liu ca nghip v.Mu ny khc vi mu 2.4.1.4 (chn loi tr) c th chn mt hoc nhiu nhnh c chn ra v thc thi, tng t nh php XOR. Cc v d:Sau khi thc hin hnh vi nh-gi-thit-hi, hnh vi lin h phng cu ha hoc hnh vi lin h cng ty bo him c thc hin. t nht mt trong hai hnh vi ny c thc hin. Tuy nhin, cng c th l c hai cn c thc hin. M hnh:B A

C

Hnh 2.6.M hnh chn a nhnh 2.3.1.7. Trn ng b ho M t: Mt im trong tin trnh l ni nhiu nhnh hi t li thnh mt tin trnh duy nht. Nu c nhiu hn mt nhnh thc thi, vic ng b ha (vic i nhau gia cc nhnh ) c thc hin. Nu ch c mt nhnh c thc thi, cc nhnh khc c th hi t m khng cn ng b ha. Trong mu ny nu c mt nhnh c kch hot, th n khng th kch hot li ln na trong khi cn ang i cc nhnh khc hon tt. Mu ny khc vi mu ng b ha ch n ng b da trn s nhnh thc s c kch hot lc thc thi. Cn mu ng b ha bt buc tt c cc nhnh i ra khi nt AND phn lung (AND-Split) phi u c thc hin. Cc v d: M rng v d trong mu 6 (chn a nhnh), sau khi mt hoc c hai hnh vi lin-h-phng-cha-chy v lin-h-cng-ty-bo-him hon tt (da trn vic n c c thc thi hay khng), hnh vi trnh-bo-co phi c thc hin (ch duy nht mt hnh vi) M hnh:Hong Xun Tun 05TH Trang 17

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A

C B

Hnh 2.7.M hnh trn ng b ha 2.3.1.8. Trn a nhnh M t: Mt im trong tin trnh l ni hai hoc nhiu nhnh hi t li v khng c ng b ha. Nu nhiu hn mt nhnh c kch hot, ngay lp tc hnh vi sau im trn s bt u i vi mi kch hot ca mi nhnh vo. Mu ny chnh l th hin cho c ch trn phc v cho mc ch dng chung cho cc thnh phn trong quy trnh. Cc v d: Thnh thong hai hay nhiu nhnh c cng im kt thc. Thay v lp li tin trnh ny cho mi nhnh (c th phc tp), ta dng mu trn a nhnh. V d n gin ca trng hp ny l 2 hnh vi kim tra n xin vic v x l n xin vic cng thc hin song song v thc hin trc hnh vi ng trng hp. M hnh:

Hnh 2.8.M hnh trn a nhnh 2.3.1.9. Cc vng lp tu M t:Mt im trong tin trnh l ni cc hnh vi c thc hin lp li nhiu ln. Mu ny l th hin cho c ch lp cu trc. Trong mu ny vic lp thng c quyt nh bi cc iu kin hoc la chn. Cc v d:Tin trnh xem xt sn phm : trong tin trnh ny vng lp cc hot ng Make,Read, Note, Approve l mt vng lp cu trc.

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Hnh 2.9.M hnh cc vng lp ty

CHNG III:TM HIU KHI QUT WEB SERVICE 3.1.nh ngha web service: l mt cng ngh gi t xa c tnh kh chuyn cao nht hin nay: mang tnh c lp nn, c lp ngn ng. Do , cc chng trnh code bng cc ngn ng lp trnh khc nhau, chy trn cc nn tng (phn cng & OS) khc nhau u c th trao i vi nhau thng qua cng ngh ny.

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Hnh 3.1.M hnh webservice n gin 3.2.c im ca webservice: Web service cho php client v server tng tc c vi nhau mc d trong nhng mi trng khac nhau. Web service thi co dang m va da vao cac tiu chun.XML va HTTP la nn tang ky thut cho web service.Phn ln ky thut cua web service c xy dng la nhng d an ngun m. Bi vy, chung c lp va vn hanh c vi nhau. Web service thi rt linh ng : vi UDDI va WSDL, thi vic m ta va phat trin web service co th c t ng hoa. Web service c xy dng trn nn tng nhng cng ngh a c chp nhn Web service co dang m un Web service c th cng b (publish) V d v webservice nh: t v my bay trc tuyn,cc dch v thng mi,d bo thi tit.

Hnh 3.2. ng dng ca webservice trong thc t

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3.3.Cc thnh phn chnh trong Webservice: 3.3.1.XML: XML l mt ngn ng m t vn bn vi cu trc do ngi s dng nh ngha .V hnh thc XML c k php ta nh HTML nhng khng tun theo mt c t quy c nh HTML. Do web service l s kt hp ca nhiu thnh phn khc nhau , do web services s dng cc tnh nng v c trng ca cc thnh phn ny giao tip vi nhau.V vy XML l mt cng c chnh yu gii quyt vn ny .T kt qa ny , cc ng dng tch hp v m tng cng s dng XML.Nh c kh nng tng hp ny m XML tr thnh kin trc nn tng cho vic xy dng web service 3.3.2.WSDL -Web Services Description Language : WSDL nh ngha cch m t web service theo c php tng qut XML , bao gm cc thng tin - Tn service. - Giao thc va kiu ma hoa se c s dung khi gi cc hm ca web service. - Loi thng tin: nhng thao tac, nhng tham s, va nhng kiu d liu gm co giao din cua web service, cng vi tn cho giao din nay. Mt WSDL hp l gm co hai phn : 1. Phn giao din m ta giao din va giao thc kt ni. 2. Phn thi hanh m ta thng tin truy xut service C 2 phn trn s c lu trong 2 tp tin XML , bao gm: - Tp tin giao din service (cho phn 1). - Tp tin thi hanh service (cho phn 2).

Hnh 3.3.M t wsdl 3.3.3.UDDI - Universal Description , Discovery and Intergration: c th s dng cc dch v, trc tin client phi tm dch v, ghi nhn thng tin v cch s dng dch v v bit c i tng cung cp dch v. UDDI nh ngha mt s thnh phn cho bit trc cc thng tin ny cho php cc client truy tm v nhn li nhng thng tin yu cu s dng web services

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Hnh 3.4.M hnh ca UDDI 3.3.4. SOAP - Simple Object Accesss Protocol Web services c th truy xut bng mt giao thc l Simple Object Access Protocol SOAP. Ni cch khc chng ta c th truy xut n UDDI registry bng cc lnh gi hon ton theo kiu SOAP. SOAP l mt giao thc giao tip c cu trc nh XML v m ha thnh nh dng chung cho cc ng dng trao i vi nhau . tng bt u t Microsoft v phn mm Userland , tri qua nhiu ln thay i , hin ti l phin bn SOAP 1.2 vi nhiu u im vut tri hn bn SOAP 1.1. SOAP c xem nh l cu trc xng sng ca cc ng dng phn tn xy dng t nhiu ngn ng , h iu hnh khc nhau. 3.3.4.1 c trng SOAP: SOAP co nhng c trng sau : - SOAP c thit k n gian va d m rng. - Tt ca cac message SOAP u c ma hoa s dung XML. - SOAP s dng giao thc truyn d liu ring. - Khng co garbage collection phn tan , v cng khng c c ch tham chiu.V th SOAP client khng gi bt k mt tham chiu y no v cc i tng xa. - SOAP khng bi rang buc bi bt ky ngn ng lp trinh nao hoc cng ngh no. 3.3.4.2 Cu trc mt message theo dng SOAP: Cu trc mt message theo dng SOAP c m t nh hnh di y:

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Hnh 3.5.Cu trc SOAP Message theo dng SOAP l mt vn bn XML bnh thng bao gm cc phn t sau: - Phn t gc - envelop : phn t bao trm ni dung message , khai bo vn bn XML nh l mt thng ip SOAP. - Phn t u trang header : cha cc thng tin tiu cho trang , phn t ny khng bt buc khai bo trong vn bn .Nhng u muc cn co th mang nhng d liu chng thc, nhng ch ky s hoa, va thng tin ma hoa, hoc nhng ci t cho giao tc. - Phn t khai bo ni dung chnh trong thng ip - body , cha cc thng tin yu cu v phn hi. - Phn t pht sinh li (Fault) cung cp thng tin li xy ra trong qa trnh x l thng ip. Trong trng hp n gian nht, phn thn cua SOAP message gm c: - Tn ca message - Mt tham khao ti mt th hin service. - Mt hoc nhiu tham s mang cc gia tri va mang cc tham chiu. C 3 kiu thng bao Request messages : vi cc tham s gi thc thi mt service Response messages vi cc tham s tr v, c s dung khi p ng yu cu. 3.4.Xy dng web service: 3.4.1.1.Giai on xy dng Giai on u tin khi chung ta tao ra mt web service la giai on xy dng.Co hai cch khc nhau tin hnh trong giai an xy dng: - Red path - solod : chung ta xy dng t trang thai ban u hoc a co sn bng ma Java. S dung ma Java , chung ta xy dng inh nghia service (WSDL) vi cac i tng , hm , chc nng ma chung ta mong mun. - Blue path dashed : mt cch thc hin khc l xy dng 1 webservice da trn mt webservice c sn 3.4.1.2.Giai on trin khai Giai on th hai la giai on trin khai.Trong giai on nay chung ta trin khai web service ti mt application server.Hong Xun Tun 05TH Trang 23

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3.4.1.3. Giai on thc thi: Giai on th ba la giai on tin hnh. Trong giai on nay chung ta cng b (publish) web service cc client c th tm thy. Thao tc cng b ny co th s dung UDDI registry.Web service c thc thi v c gi bi nhng ngi dng mun s dng dch v. 3.4.1.4. Giai on quan ly: Giai on cui cng la giai on quan ly. N bao trum tt ca cac nhim vu quan ly va quan tri ng dung web service. Chng ta nm c cc bc c bn thc hin 1 dch v web. Ngoi ra cn c nhng phng php khc to mt dch v khc m in hnh l s dng ngn ng BPEL4WS. y l ngn ng mnh hin nay,chng ta s i vo tm hiu ngn ng ny chng k tip.

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CHNG 4: L THUYT BPEL 2.0Lch s ca BPEL: The Business Process Execution Language for Webservice (BPEL4WS) c hnh thnh thng 7 nm 2002 vi phin bn BPEL4WS 1.0 l s hp tc ca IBM,Microsoft v BEA. l s kt hp ca IBMs Web Services Flow Language (WSFL) and Microsofts XLANG. Vo thng 5-2003 mt s hp tc ca SAP v Siebel System th to nn phin bn 1.1,nhn c nhiu s quan tm v ch . Sau OASIS mua li v pht trin cho ti ngy nay.BPEL l mt ngn ng XML m t cc business process da trn cc webservice.

Hnh 4.1.Kin trc ca bpel process 4.1.Ni dung c bn: 4.1.1.Cu trc ca bpel process: u tin BPEL process l mt container,trong chng ta nh ngha cc mi lin h bn ngoi,nh ngha cc loi d liu,kim sot li v quan trng nht chnh l cc active thc thi. Trn cng, process cha mt s thuc tnh v cc namespace.V d:

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Namespace nh ngha http://docs.oasis-open.org/wsbpel/2.0/process/executable l nhng Execute Process Ta c cu trc tng qut theo mu sau: ? + ? + ? + ? * activity ? activity ? activity ? ? + activity * activity

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Activity

4.1.2.Mi quan h vi cc Bussiness Partner: BPEL gi nhng service tng tc vi process l nhng partner (invoke) v client s dng BPEL cng l 1partner (receive).BPEL process th ging nh 1 webservice. Cu trc ca partnerLinks v d nh sau:

Hnh 4.2. Cc thnh phn trong bpel process V d:cc partner tng ng l:Client,Credit Service v Inventory Service 4.1.3.Trng thi ca BPEL process: vic truyn d liu trong BPEL ta nh ngha cc variable.cc variable ny lu gi d liu trong sut qu trnh thc hin BPEL process. Cc d liu ny c vit v c t cc kiu bin. Gi tr trong 1 bin c th l ca 2 ngun: hoc l nhng message trao i gia cc partner hoc l nhng d liu trung gian ca ca process. Cc bin trong BPEL phi l cc kiu message trong WSDL,cc kiu c bn trong XML Schema. V thay i trng thi ca process bng cch thay iHong Xun Tun 05TH Trang 27

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ni dung ca cc bin th s dng 1 ngn ng cho vic thao tc v truy vn cc bin.Mc nh trong BPEL process l XPath 1.0. Chng ta c th nh ngha cc bin theo tn v cc kiu ca n v 3 thuc tnh c th l: type,messageType hoc element. 4.2.Cc Activie c bn: Trong BPEL chia ra lm 2 loi active: active c bn v active c cu trc. 4.2.1.Invoke: active c s dng gi webservice.V c bn th l gi cc operation ca service .Operation c th l yu cu-tr v hoc 1 chiu tng ng vi s nh ngha operation trong WSDL 1.1. BPEL c th s dng cc c php c bn k trn. C php ca nh sau: standard-elements ? + * activity ? activity ? activity Hong Xun Tun 05TH Trang 28

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V d: 4.2.2.Receive: Acitve cho php business process lm vic vi cc message ti. N ch ra nhn message qua portType no v s dng operation no C php ca active : standard-elements ? + V d: 4.2.3.Reply: Active cho php bussiness process gi 1message tr li message m n nhn trc thng qua S kt hp ca & tng ng vi request-response trong s nh ngha WSDL 1.1 C php ca : standard-elements ? +Hong Xun Tun 05TH Trang 29

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V d: 4.2.4.Assign. Active dng cp nht cc gi tr ca bin hoc dng copy d liu gia cc bin,cc biu thc,cc partnerLink endpoint.Trong c php ca c th c nhiu lnh . Vi mi lnh th chng ta phi ch ra ngun V ch . C php ca nh sau: ... V d: Hong Xun Tun 05TH Trang 30

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Hoc: Hoc:

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4.2.5. Throw: Active c s dng khi BPEL process cn thng bo c mt li trong n. cung cp tn ca li. C php ca : standard-elements Trong faultname c nh ngha trong Process,trong WSDL,hoc cc mu li c sn trong BPEL 4.2.6.Empty: i khi chng ta phi s dng 1active m khng lm g c v d nh khi mt li cn c bt v cm n th active c s dng vi mc ch nh th.Mt cch s dng khc ca l cung cp s ng b trong active .C php ca l: standard-elements 4.3.Cc Active c cu trc WS-BPEL nh ngha cc activity cho m hnh iu khin lung. iu khin tun t gia cc active: ,,, v Cu trc ng b 4.3.1.X l tun t: Trong active cha mt hoc nhiu activity th hin s tun t.C php ca nh sau: ... ... ...

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4.3.2.iu kin : activity cung cp cc hnh ng c iu kin,n bao gm mt hoc nhiu cc iu kin r nhnh c nh ngha bi v ,tip theo ngay sau l .Trong nhnh iu kin u tin nu n l true th activity cha trong n s c thc hin,nu l false th n s nhy qua nhnh k tip.Sau kim tra iu kin true hay false.Nu khng c nhnh no iu kin true th n s nhy qua ,thc hin cc activity trong . C php c bn ca activity < if> nh sau: standard-elements bool-expr activity * bool-expr activity ? activity V d: bpel:getVariableProperty('stockResult','inventory:level') >= 0

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4.3.3.Thc thi vng lp : activity cung cp s thc thi lp ca cc activity cha trong n.Mi activity s thc hin vi iu kin true t u vng lp. standard-elements bool-expr activity V d: $orderDetails > 100 ...

4.3.4. Song song v x l cc iu khin l thuc: cung cp s ng b.C php ca nh sau: standard-elements ? + activity+ Hiu c bn th l t cc activity trong ng thi thc hin. V d: 4.3.5.X l a nhnh:

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standard-elements unsigned-integer-expression unsigned-integer-expression ? ? unsigned-integer-expression ... Trong activity th 2 biu thc v c nh gi.Mt trong 2 gi tr s tr v hng s cn li ca vng lp. Trong mi u phi c . 4.3.6.Scope (phm vi): Mt cung cp ng cnh m c tc dng thc thi cc hnh ng.Ng cnh ca hnh ng bao gm bin,partnerLink,message exchange,correlation set,event handler,fault handler,a competion handler v termination handler.Ng cnh ny c th c phn cp.C php ca nh sau: standard-elements ? ... ? ... ? ... ? ...Hong Xun Tun 05TH Trang 35

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? ... ? ... ? ... ? ... activity CHNG 5: NG DNG CHO BPEL 5.1.M t nghip v: 1 cty kinh doanh du lch c dch v t v my bay trc tuyn.Khch hng s truy cp vo trang web,tin hnh t ch.Khch hng cung cp tn,a im,ngy khi hnh v ngy v.Ngay sau cc x l ca BPEL s kim tra gi v ca 2 hng hng khng l PTIT v Delta (cng thng qua 2 webservice cc hng ny).Kt thc,BPEL process s chn gi v thp v tr v cho khch hng. 5.2.Phn tch bi ton: n gin em xy dng mt BPEL process theo cch ng b (synchronous) v BPEL process invoke 3 ws trong :Webservice cho vic kim tra thng tin,trng thi khch hng cng l ng b nhng WS ca 2 hng hng khng l bt ng b M hnh tng quan bi ton nh sau: BPEL Process

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1:Request

Clien t

6:Reply 4.1:Invoke

PTIT Airlines WS4.2:Callback

5.2:Callback

Delta Airlines WS5.1:Invoke

Hnh 5.1.Lc hot ng 5.3.Xy dng BPEL process: Bao gm cc bc sau: Xy dng cc webservice lin quan nh ngha WSDL cho BPEL process nh ngha cc partner link type nh ngha cc partner links nh ngha cc variable Xy dng cc x l ca definition

5.3.1.Xy dng cc webservice lin quan: + PTIT Airline Webservice:

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ExecuteRequestMessage TicketptitPT: Execute operation ExecuteResponseMessage

PTIT Airlines Webservice

Hnh 5.2.Interface ca web service airline webservice 5.3.2 WSDL cho BPEL Process: BPEL Process ca dch v du lch ny th tng t nh 1 webservice thng thng.Chng ta cn nh ngha WSDL cho n.Process ny s nhn message t client v tr v kt qu.v th n cng thng qua 1 port type m s client s s dng cho process. nh ngha TravelApprovalPT port type vi TravelApproval operation

DemoRequest DemoPT: Process operation DemoResponse

BPEL Process

Hnh 5.3. Interface bpel process 5.3.3 nh ngha cc Partner Link Types: Cc partner link type ch ra s tng tc ln nhau gia cc BPEL process v cc thnh phn lin quan. l BPEL process gi cc ws v client gi BPEL process. Trong ng cnh ny c 3 thnh phn chnh l: client ptitairline service v deltaairline service v mi webservice tng ng vi mt partner link type. Chng ta nh ngha 3 partner link type tng ng vi mi ws:Hong Xun Tun 05TH Trang 38

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travelLT: m t s tng tc ln nhau BPEL process client v chnh BPEL process,n c nh ngha trong WSDL ca BPEL process employeeLT: m t s tng tc ca BPEL process v ws Employee Travel Status.N c nh ngha trong WSDL ca ws Employee flightLT:m t s tng tc ca BPEL process vi cc ws Airlines.S tng tc ny l bt ng b.N c nh ngha trong WSDL ca ws Airlines Ch rng mi partner link type c mt hoc hai role v mi role phi ch ra porttype m n s dng u tin chng ta nh ngha travelLT vo trong WSDL ca BPEL process.N c s dng khi client gi BPEL process v ch c 1vai tr l service travel ny( chnh l BPEL process).Client s dng port type TravelApprovalP lin lc vi process.V d:

...

.. Cui cng l flightLT: m t s truyn thng ca process vi cc ws Airlines.Cn 2 role. Th nht l : l vai tr ca Airline service (airlineService),BPEL process s dng thng qua port type FlightAvailabilityPT gi service ny Th hai l : vai tr ca BPEL process vi cc ws ny gi l airlineCustomer.V cc ws ny s dng port type FlightCallbackPT callback V d: ...

... 5.3.4.nh ngha quy trnh nghip v (Bussiness Process Definition) Ch ra cc activities trong BPEL process. c trng: BPEL process ny i 1 message v bt u thc thi cc x l. Message ny thng l request ca client. Cc activity s khi to c th l tun t hoc song song, c nhng dng nh sau: Invoke operation cc ws Receive kt qu t cc wsHong Xun Tun 05TH Trang 39

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Cc iu kin r nhnh Looping Bt ngoi l Lc tun t gia cc thnh phn trong bi ton l:

Hnh 5.4. Lc tun t Bao gm cc thnh phn lin quan nh: Client invoke BPEL process BPEL process itself 2 ws Airline 5.4.Config engine v ci plug-in Pht trin v thc thi cc quy trnh nghip v WS-BPEL V2.0 bng cch s dng plug-in BPEL Eclipse Designer BPEL V2.0 l mt ngn ng mnh dng tr gip pht trin cc ng dng phc tp, ln, gm nhiu thnh phn v dch v Web khc. BPEL cho php bn m t lung cng vic di bng cch s dng trnh son tho ha biu th lung cng vic trn cc biu thn thin vi con ngi. Qu Apache gi vic thc hin Web Services Business Process Execution Language (WS-BPEL - Ngn ng thc hin quy trnh nghip v ca cc Dch v Web) phin bn V2.0 ca n l Orchestration Director Engine. ODE thc hin ccHong Xun Tun 05TH Trang 40

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quy trnh WS-BPEL, c kh nng giao tip vi cc dch v Web, gi v nhn cc thng bo, v.v.

Trc khi ci t ODE v BPEL cho Eclipse, hy chc chn rng phn sau y c ci t trn my tnh ca bn: 1.Java V5.0 hoc mi hn. 2.Tomcat V5.5 hoc mi hn. 3.Eclipse V3.3.x vi cc plug-in sau y c ci t: EMF V2.3.x GEF V3.3.x DTP STK V1.5.x WTP (Web Tools Platform - Nn tng ca cc dng c Web) V2.0.x 5.4.1.Ci t Apache Tomcat: S dng apache-tomcat-5.5.27.Gii nn vo C vi ng dn nh sau: C:\apache-tomcat-5.5.27 Ci JDK 1.5.x hoc cc phin bn v sau.Ta thit lp bin mi trng JAVA_HOME ch n th mc ci t JDK.Tng t cng thit lp bin CATALINA_HOME ch n th mc ci t Tomcat theo hnh sau:

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Hnh 5.5 Thit lp bin mi trng Sau test xem Tomcat ci t thnh cng cha.

Hnh 5.6 Start Tomcat 26 M IE hoc Firefox g ng dn nh sau:http://localhost:8080/ s dng tomcat

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5.5.2.Ci t Axis2( phin bn nng cp ca Axis):c nhiu cch ci t axis2,n gin nht l chp tp tin axi2.war vo th mc C:\apache-tomcat5.5.27\webapps v restart li tomcat s thnh cng.Truy cp:http://localhost:8080/axis2 s c:

Hnh 5.7.Khi ng Axis2 5.4.3.Ci t Eclipse WTP: Bao gm cc gi sau: eclipse-SDK-3.5-win32_2.zip emf-runtime-2.5.0.zip GEF-SDK-3.5.0.zip wtp-sdk-R-3.1-20090616035105.zip wtp-Automated-Tests-R-3.1-20090616035105.zip org.eclipse.releng.tools-3.5.zip xsd-runtime-2.5.0.zip Gii nn tt c vo C,ta s c th mc C:\eclipse. Khi ng Eclipse v thit lp cc cu hnh nh sau: Vo Window -> Preferences -> Web Services -> Axis2 Emitter chn th mc ci t Axis2 nu thnh cng s xut hin thng bo

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Hnh 5.8 Thit lp Axis2 trong eclipse Tip n l to cu hnh webserver tomcat cho Eclipse. Chn Window -> Preferences -> Server -> Runtime environment.Chn Apache-Tomcat 5. 5.4.4 Ci t MySQL 4.1 v JDBC connector: JDBC l mt chun truy xut c s d liu rt ph bin. Cc RDBMS (Relational Database Management Systems H qun tr c s d liu quan h) hay cc nh sn xut phn mm bn th ba pht trin cc driver cho Java u cn tun th cht ch c t JDBC. Cc nh pht trin khc s dng cc driver ny pht trin nn cc ng dng c truy cp c s d liu Ci t Connector/J - JDBC Driver ca MySQL JDBC Driver ca MySQL c th ly v a ch http://www.mysql.com/downloads/api-jdbc.html .Hong Xun Tun 05TH Trang 44

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File bn ti v s l mt file .zip hoc .gz. Sau khi gii nn bn s c 1 file c tn tng t nh sau: mysql-connectorjava- 3.0.9-stable-bin.jar. Hy chp file ny vo th mc %JAVA_HOME%/jre/lib/ext trn h thng ca bn. V d C:\j2sdk1.4.2\jre\lib\ext.Bn cng cn a ng dn n file JAR ny vo bin mi trng MYSQL_DRIVER ca bn. Thit k c s d liu: Mi webservice s dng 1database trong gm 3 bng c mi quan h nh sau:

Hnh 5.9. Lc c s d liu

5.4.5.Ci t ODE Apache Ti v ODE. Khi ng Webserver Tomcat Apache v s dng trnh qun l Tomcat (Tomcat Manager) (Bn nn tm trnh qun l ny trn my tnh ca bn ti http://localhost:8080/manager/html) trin khai m-un ode.war t kho t liu phn phi. kim tra thnh cng, hy truy cp http://localhost:8080/ode/, hin th trng thi ca dch v Web ODE ca my tnh 5.5.Thc hin: 5.5.1.Chng trnh chnh: Giao din design ca chng trnh:

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Hnh 5.10. Giao din thit k u tin l import cc file wsdl tng ng vi 2 webservice s s dng l: ptitairline.wsdl v deltaairline.wsdl

Hnh 5.11.WSDL ca web service airline Partner gm:client,partnerLink(ptitairline),partnerLink1(deltaairline) S dng ca s properties modify cc partnerlinktype,role,name theo hnh:

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Hnh 5.12.Thit k partnerlink

Thit lp properties cho activity: bao gm partner s tng ng vi webservice m BPEL process s gi thng qua portType: ticketptitPortType ng vi operation: execute v n s dng 2 bin tham gia l: PartnerLinkRequest, PartnerLinkResponse.

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Hnh 5.13 config active Da vo lc hot ng ta thit k BPEL process theo mu sau:

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Hnh 5.14. BPEL proccess S dng activity: y s c 2 iu kin r nhnh.Nu gi v ca hng PTIT nh hn gi v ca Delta th s chn gi PTIT hoc ngc li Xt iu kin cho nh sau: boolean($PartnerLinkResponse.parameters/ns:return