锘??xml version="1.0" encoding="utf-8" standalone="yes"?>亚洲乱码国产一区三区,亚洲福利秒拍一区二区,亚洲一区二区视频在线观看http://www.tkk7.com/ocean07000814/category/15456.html鍏卞悓鎺㈣STRUTS#HIBERNATE#SPRING#EJB絳夋妧鏈?/description>zh-cnFri, 02 Mar 2007 03:26:48 GMTFri, 02 Mar 2007 03:26:48 GMT60Ioc瀹瑰櫒鐨勯潻鍛芥т紭鐐?杞?http://www.tkk7.com/ocean07000814/articles/70690.html闈炴床灝忕櫧鑴?/dc:creator>闈炴床灝忕櫧鑴?/author>Wed, 20 Sep 2006 01:31:00 GMThttp://www.tkk7.com/ocean07000814/articles/70690.htmlhttp://www.tkk7.com/ocean07000814/comments/70690.htmlhttp://www.tkk7.com/ocean07000814/articles/70690.html#Feedback0http://www.tkk7.com/ocean07000814/comments/commentRss/70690.htmlhttp://www.tkk7.com/ocean07000814/services/trackbacks/70690.htmlIoc瀹瑰櫒鐨勯潻鍛芥т紭鐐?/h3>

銆銆鎴戜滑鐭ラ亾錛屽湪Java鍩烘湰鏁欑▼涓湁涓涓畾寰嬪憡璇夋垜浠細(xì)鎵鏈夌殑瀵硅薄閮藉繀欏誨垱寤猴紱鎴栬呰錛氫嬌鐢ㄥ璞′箣鍓嶅繀欏誨垱寤猴紝浣嗘槸鐜板湪鎴戜滑鍙互涓嶅繀涓瀹氶伒寰繖涓畾寰嬩簡(jiǎn)錛屾垜浠彲浠ヤ粠Ioc瀹瑰櫒涓洿鎺ヨ幏寰椾竴涓璞$劧鍚庣洿鎺ヤ嬌鐢紝鏃犻渶浜嬪厛鍒涘緩瀹冧滑銆?/p>

銆銆榪欑鍙橀潻錛屽氨濡傚悓鎴戜滑鏃犻渶鑰冭檻瀵硅薄閿姣佷竴鏍鳳紱鍥犱負(fù)Java鐨勫瀮鍦懼洖鏀舵満鍒跺府鍔╂垜浠疄鐜頒簡(jiǎn)瀵硅薄閿姣侊紱鐜板湪鍙堟棤闇鑰冭檻瀵硅薄鍒涘緩錛屽璞$殑鍒涘緩鍜岄攢姣侀兘鏃犻渶鑰冭檻浜?jiǎn)锛寴q欑粰緙栫▼甯︽潵鐨勫獎(jiǎng)鍝嶆槸宸ㄥぇ鐨勩?/p>

銆銆鎴戜滑浠庝竴涓畝鍗曚緥瀛愬紑濮嬶紝鏈変竴涓櫘閫氱被B浠g爜濡備笅錛?/p>
public class B implements BI{

銆銆銆銆AInfterface a;

銆銆銆銆public B(AInfterface a){

銆銆銆銆銆銆this.a = a

銆銆銆銆}

銆銆銆銆public void invoke(){

銆銆銆銆銆銆/** ...*/

銆銆銆銆}

}

銆銆鏈変袱縐嶄嬌鐢˙鐨勬柟寮忥細(xì)

銆銆鏅氭棤Ioc瀹瑰櫒鐨勮皟鐢ㄦ柟寮?
銆銆BI b = new B(new A());//闇瑕佸湪鐢熸垚B瀹炰緥涔嬪墠 鐢熸垚A絳夊疄渚?br />銆銆b. invoke();

銆銆浣跨敤Ioc瀹瑰櫒(Jdon妗嗘灦)鐨勯潻鍛借皟鐢ㄦ柟寮忥細(xì)
銆銆BI b = (BI) WebAppUtil.getService(鈥渂鈥?;
銆銆b. invoke();

銆銆涓婇潰涓ょ鏂瑰紡閲嶈鍖哄埆錛?br />銆銆鍓嶈呴渶瑕佺収欏綛綾諱腑A綾葷殑瀹炰緥鍖栵紝濡傛灉B綾諱腑璋冪敤涓嶅彧A綾諱竴涓紝榪樻湁鏇村鍏朵粬綾誨C/D/E絳夌被錛岃繖鏍鳳紝浣犲湪浣跨敤B綾繪椂錛岃繕闇瑕佺爺絀跺叾浠栫被鐨勫垱寤猴紝濡傛灉C/D/E榪欎簺綾諱笉鏄綘鑷繁緙栧啓錛屼綘榪橀渶瑕佺炕闃呭畠浠殑API璇存槑錛岀爺絀跺畠浠簲璇ュ浣曞垱寤猴紵鏄嬌鐢∟ew 榪樻槸宸ュ巶妯″紡 榪樻槸鍗曟佽皟鐢紵

銆銆榪欐椂錛屼綘浼?xì)鎰熷徆锛?xì)鍝囷紝鏈夋病鏈夋悶閿欙紵鎴戝彧涓嶈繃鏄負(fù)浜?jiǎn)鋴社敤B綾諱腑涓涓皬灝忕殑鏂規(guī)硶錛屽氨鑺卞幓鎴戣繖涔堝鏃墮棿鍜岀簿鍔涳紵

銆銆褰撴垜浠嬌鐢ㄧ浜岀鏂瑰紡鏃訛紝灝辨棤闇鑺卞緢澶氱簿鍔涘拰鏃墮棿鑰冭檻A/C/D/E絳夌被鐨勫垱寤恒?/p>

銆銆浣跨敤Ioc瀹瑰櫒錛屼綘鍐嶄篃涓嶅繀鍋氳繖浜涘兊鍖栨剼锠㈢殑宸ヤ綔浜?jiǎn)锛屾垜浠彧闇浠巌oc瀹瑰櫒涓姄鍙栦竴涓被鐒跺悗鐩存帴浣跨敤瀹冧滑銆?/p>

銆銆褰撶劧錛屽湪浣跨敤涔嬪墠錛屾垜浠渶瑕佸仛涓涓畝鍗曠殑閰嶇疆錛屾妸浣犲皢鏉ラ渶瑕佷嬌鐢ㄧ殑綾誨叏閮ㄥ憡璇塱oc瀹瑰櫒錛屼緥濡?a target="_blank">Jdon妗嗘灦鐨刬oc瀹瑰櫒閰嶇疆jdonframework.xml濡備笅:

<app>
銆銆<services>
銆銆銆銆<pojoService name="b" class="test.B"/>
銆銆銆銆<pojoService name="a" class="test.A"/>
銆銆銆銆<pojoService name="c" class="test.C"/>

銆銆</services>
</app>

銆銆娉ㄦ剰錛氳櫧鐒禕綾諱唬鐮佽皟鐢ㄤ簡(jiǎn)A綾?鐢氳嚦鍙兘璋冪敤C絳夊叾浠栫被)錛屼絾鏄湪閰嶇疆涓垜浠棤闇鑰冭檻榪欑璋冪敤鍏崇郴銆傚洜姝わ紝鏁翠釜鐜妭鎴戜滑閮芥棤闇鑰冭檻B(tài)綾諱腑娑夊強(qiáng)鍏朵粬綾葷殑璋冪敤鍏崇郴錛涜繖鏍鋒槸闈炲父鐪佹椂鐪佸姏鐨勶紱鐗瑰埆鏄鏋滈」鐩緝澶э紝JavaBeans鐗瑰埆澶氾紝鍙堟槸澶氫漢鍗忚皟寮鍙戯紝榪欑鏂瑰紡瀵規(guī)彁楂樺紑鍙戞晥鐜囷紱闄嶄綆鍑洪敊鐜囨槸闈炲父澶х殑甯姪銆?/p>

銆銆濡傛灉浣犵殑欏圭洰涓湁闈炲父澶氱殑綾伙紱璋冪敤鍏崇郴寰堝鏉傦紝鑰屼笖璋冪敤鍏崇郴闅忔椂閮藉彲鑳藉彉鍖栵紝閭d箞錛屼嬌鐢ㄦ棤闇鐓ч【璋冪敤鍏崇郴鐨処oc瀹瑰櫒鏃犵枒鏄噺杞誨紑鍙戣礋鎷呯殑棣栭夈?/p>

銆銆ioc瀹瑰櫒鍙﹀涓涓憲鍚嶅疄鐜版槸Spring妗嗘灦錛屼絾鏄湪Spring鐨勯厤緗枃浠禷pplicationContext.xml涓紝鎴戜滑蹇呴』鑰冭檻涓婅堪璋冪敤鍏崇郴錛?/p>

<bean id="b" class="test.B">
銆銆<property name="a"><ref bean="a"/></property><!-- 蹇呴』鎸囧畾璋冪敤鍏崇郴 -->
銆銆....
</bean>
<bean id="a" class="test.A">
<bean id="c" class="test.C">

銆銆鎵浠ワ紝浠庝互涓婂姣旀潵鐪嬶紝浠庨」鐩紑鍙戞晥鐜囪搴︾湅錛屽熀浜嶱iocContainer瀹炵幇鐨凧don妗嗘灦鍦ㄥ疄闄呬嬌鐢ㄩ厤緗晥鐜囨棤鐤戣楂樹簬Spring妗嗘灦銆?/p>

銆銆鍚屾椂錛屼篃鍙互璇達(dá)細(xì)鍩轟簬PiocContainer瀹炵幇鐨凧don妗嗘灦瀹屽叏鐪熸瀹炵幇浜?jiǎn)Ioc瀹瑰櫒鐨勯潻鍛芥т紭鐐癸細(xì)棰犺浜?jiǎn)鈥滀嬌鐢ㄥ璞′箣鍓嶅繀欏誨垱寤衡?鐨勫熀鏈琂ava璇█瀹氬緥



]]>
Ioc妯″紡(杞?http://www.tkk7.com/ocean07000814/articles/70689.html闈炴床灝忕櫧鑴?/dc:creator>闈炴床灝忕櫧鑴?/author>Wed, 20 Sep 2006 01:30:00 GMThttp://www.tkk7.com/ocean07000814/articles/70689.htmlhttp://www.tkk7.com/ocean07000814/comments/70689.htmlhttp://www.tkk7.com/ocean07000814/articles/70689.html#Feedback0http://www.tkk7.com/ocean07000814/comments/commentRss/70689.htmlhttp://www.tkk7.com/ocean07000814/services/trackbacks/70689.htmlIoc妯″紡(鍙堢ОDI錛欴ependency Injection)

銆銆鍒嗙鍏蟲敞錛?Separation of Concerns : SOC錛夋槸Ioc妯″紡鍜孉OP浜х敓鏈鍘熷鍔ㄥ姏錛岄氳繃鍔熻兘鍒嗚В鍙緱鍒板叧娉ㄧ偣錛岃繖浜涘叧娉ㄥ彲浠ユ槸 緇勪歡Components, 鏂歸潰Aspects鎴栨湇鍔ervices銆?/p>

銆銆浠嶨oF璁捐妯″紡涓紝鎴戜滑宸茬粡涔?fàn)鎯竴縐嶆濈淮緙栫▼鏂瑰紡錛欼nterface Driven Design 鎺ュ彛椹卞姩錛屾帴鍙i┍鍔ㄦ湁寰堝濂藉錛屽彲浠ユ彁渚涗笉鍚岀伒媧葷殑瀛愮被瀹炵幇錛屽鍔犱唬鐮佺ǔ瀹氬拰鍋ュ.鎬х瓑絳夛紝浣嗘槸鎺ュ彛涓瀹氭槸闇瑕佸疄鐜扮殑錛屼篃灝辨槸濡備笅璇彞榪熸棭瑕佹墽琛岋細(xì)

銆銆AInterface a = new AInterfaceImp();

銆銆AInterfaceImp鏄帴鍙Interface鐨勪竴涓瓙綾伙紝Ioc妯″紡鍙互寤剁紦鎺ュ彛鐨勫疄鐜幫紝鏍規(guī)嵁闇瑕佸疄鐜幫紝鏈変釜姣斿柣錛氭帴鍙e鍚岀┖鐨勬ā鍨嬪錛屽湪蹇呰鏃訛紝闇瑕佸悜妯″瀷濂楁敞灝勭煶鑶忥紝榪欐牱鎵嶈兘鎴愪負(fù)涓涓ā鍨嬪疄浣擄紝鍥犳錛屾垜浠皢浜轟負(fù)鎺у埗鎺ュ彛鐨勫疄鐜版垚涓衡滄敞灝勨濄?/p>

銆銆Ioc鑻辨枃涓?Inversion of Control錛屽嵆鍙嶈漿妯″紡錛岃繖閲屾湁钁楀悕鐨勫ソ鑾卞潪鐞嗚錛氫綘鍛嗙潃鍒姩錛屽埌鏃舵垜浼?xì)鎵句綘銆?/p>

銆銆鍏跺疄Ioc妯″紡涔熸槸瑙e喅璋冪敤鑰呭拰琚皟鐢ㄨ呬箣闂寸殑涓縐嶅叧緋伙紝涓婅堪AInterface瀹炵幇璇彞琛ㄦ槑褰撳墠鏄湪璋冪敤琚皟鐢ㄨ匒InterfaceImp錛岀敱浜庤璋冪敤鑰呭悕縐板啓鍏ヤ簡(jiǎn)璋冪敤鑰呯殑浠g爜涓紝榪欎駭鐢熶簡(jiǎn)涓涓帴鍙e疄鐜扮殑鍘熺姜錛氬郊姝よ仈緋伙紝璋冪敤鑰呭拰琚皟鐢ㄨ呮湁绱у瘑鑱旂郴錛屽湪UML涓槸鐢ㄤ緷璧?Dependency 琛ㄧず銆?/p>

銆銆浣嗘槸榪欑渚濊禆鍦ㄥ垎紱誨叧娉ㄧ殑鎬濈淮涓嬫槸涓嶅彲蹇嶈愮殑錛屽繀欏誨垏鍓詫紝瀹炵幇璋冪敤鑰呭拰琚皟鐢ㄨ呰В鑰︼紝鏂扮殑Ioc妯″紡 Dependency Injection 妯″紡鐢辨浜х敓浜?jiǎn)锛?Dependency Injection妯″紡鏄緷璧栨敞灝勭殑鎰忔濓紝涔熷氨鏄皢渚濊禆鍏堝墺紱伙紝鐒跺悗鍦ㄩ傚綋鏃跺欏啀娉ㄥ皠榪涘叆銆?/p>

Ioc妯″紡錛圖ependency Injection妯″紡錛夋湁涓夌錛?/p>
絎竴縐嶇被鍨?/td> 浠嶫NDI鎴朣erviceManager絳夎幏寰楄璋冪敤鑰咃紝榪欓噷綾諱技ServiceLocator妯″紡銆?/td> 1. EJB/J2EE
2. Avalon錛圓pache鐨勪竴涓鏉備嬌鐢ㄤ笉澶氱殑欏圭洰錛?/td>
絎簩縐嶇被鍨?/td> 浣跨敤JavaBeans鐨剆etter鏂規(guī)硶 1. Spring Framework,
2. WebWork/XWork
絎笁縐嶇被鍨?/td> 鍦ㄦ瀯閫犳柟娉曚腑瀹炵幇渚濊禆 1. PicoContainer,
2. HiveMind

銆銆鏈夎繃EJB寮鍙戠粡楠岀殑浜洪兘鐭ラ亾錛屾瘡涓狤JB鐨勮皟鐢ㄩ兘闇瑕侀氳繃JNDI瀵繪壘鍒板伐鍘傛ц川鐨凥ome鎺ュ彛錛屽湪鎴戠殑鏁欑▼EJB鏄粈涔?/a>绔犺妭涓紝鎴戜篃鏄粠渚濊禆鍜屽伐鍘傛ā寮忚搴︽潵闃愯堪EJB鐨勪嬌鐢ㄣ?/p>

銆銆鍦ㄩ氬父浼犵粺鎯呭喌涓嬶紝涓轟簡(jiǎn)瀹炵幇璋冪敤鑰呭拰琚皟鐢ㄨ呰В鑰︼紝鍒嗙錛屼竴鑸槸閫氳繃宸ュ巶妯″紡瀹炵幇鐨勶紝涓嬮潰灝嗛氳繃姣旇緝宸ュ巶妯″紡鍜孖oc妯″紡涓嶅悓錛屽姞娣辯悊瑙oc妯″紡銆?/p>

宸ュ巶妯″紡鍜孖oc

銆銆鍋囪鏈変袱涓被B 鍜?C錛欱浣滀負(fù)璋冪敤鑰咃紝C鏄璋冪敤鑰咃紝鍦˙浠g爜涓瓨鍦ㄥC鐨勮皟鐢細(xì)

public class B{
銆銆 private C comp;
銆銆......
}

銆銆瀹炵幇comp瀹炰緥鏈変袱縐嶉斿緞錛氬崟鎬佸伐鍘傛ā寮忓拰Ioc銆?/p>

宸ュ巶妯″紡瀹炵幇濡備笅錛?/p>

public class B{
銆銆 private C comp;
銆銆private final static MyFactory myFactory = MyFactory.getInstance();

銆銆public B(){
銆銆銆銆this.comp = myFactory.createInstanceOfC();

銆銆}
銆銆 public void someMethod(){
銆銆銆銆this.comp.sayHello();
銆 }
銆銆......
}

鐗圭偣錛?/p>

  • 姣忔榪愯鏃訛紝MyFactory鍙牴鎹厤緗枃浠禭ML涓畾涔夌殑C瀛愮被瀹炵幇錛岄氳繃createInstanceOfC()鐢熸垚C鐨勫叿浣撳疄渚嬨?

浣跨敤Ioc渚濊禆鎬ф敞灝? Dependency Injection )瀹炵幇Picocontainer濡備笅錛孊綾誨鍚岄氬父POJO綾伙紝濡備笅錛?/p>

public class B{
銆銆 private C comp;
銆銆public B(C comp){
銆銆銆銆this.comp = comp;
銆銆 }
銆銆 public void someMethod(){
銆銆銆銆this.comp.sayHello();
銆銆 }
銆銆......
}

鍋囪C鎺ュ彛/綾繪湁鏈変竴涓叿浣撳疄鐜癈Imp綾匯傚綋瀹㈡埛绔皟鐢˙鏃訛紝浣跨敤涓嬪垪浠g爜錛?/p>

public class client{
銆銆 public static void main( String[] args ) {
銆銆銆銆DefaultPicoContainer container = new DefaultPicoContainer();
銆銆銆銆container.registerComponentImplementation(CImp.class);
銆銆銆銆container.registerComponentImplementation(B.class);
銆銆銆銆B b = (B) container.getComponentInstance(B.class);
銆銆銆銆b.someMethod();
銆銆 }
}

銆銆鍥犳錛屽綋瀹㈡埛绔皟鐢˙鏃訛紝鍒嗗埆浣跨敤宸ュ巶妯″紡鍜孖oc鏈変笉鍚岀殑鐗圭偣鍜屽尯鍒細(xì)

銆銆涓昏鍖哄埆浣撶幇鍦˙綾葷殑浠g爜錛屽鏋滀嬌鐢↖oc錛屽湪B綾諱唬鐮佷腑灝嗕笉闇瑕佸祵鍏ヤ換浣曞伐鍘傛ā寮忕瓑鐨勪唬鐮侊紝鍥犱負(fù)榪欎簺宸ュ巶妯″紡鍏跺疄榪樻槸涓嶤鏈変簺闂存帴鐨勮仈緋伙紝榪欐牱錛屼嬌鐢↖oc褰誨簳瑙h︿簡(jiǎn)B鍜孋涔嬮棿鐨勮仈緋匯?/p>

銆銆浣跨敤Ioc甯︽潵鐨勪唬浠鋒槸錛氶渶瑕佸湪瀹㈡埛绔垨鍏跺畠鏌愬榪涜B鍜孋涔嬮棿鑱旂郴鐨勭粍瑁呫?/p>

銆銆鎵浠ワ紝Ioc騫舵病鏈夋秷闄鍜孋涔嬮棿榪欐牱鐨勮仈緋伙紝鍙槸杞Щ浜?jiǎn)杩櫩U嶈仈緋匯?br />銆銆榪欑鑱旂郴杞Щ瀹為檯涔熸槸涓縐嶅垎紱誨叧娉紝瀹冪殑褰卞搷宸ㄥぇ錛屽畠鎻愪緵浜?jiǎn)AOP瀹炵幇鐨勫彲鑳姐?/p>

Ioc鍜孉OP

銆銆AOP鎴戜滑宸茬粡鐭ラ亾鏄竴縐嶉潰鍚戝垏闈㈢殑緙栫▼鏂瑰紡錛岀敱浜嶪oc瑙f斁鑷敱浜?jiǎn)B綾伙紝鑰屼笖鍙互鍚態(tài)綾誨疄鐜版敞灝凜綾誨叿浣撳疄鐜幫紝濡傛灉鎶夿綾繪兂鍍忔垚榪愯鏃剁殑妯悜鍔ㄤ綔錛屾棤鐤戞敞鍏綾誨瓙綾誨氨鏄疉OP涓殑涓縐岮dvice錛屽涓嬪浘錛?/p>

銆銆閫氳繃涓嬪垪浠g爜璇存槑濡備綍浣跨敤Picocontainer瀹炵幇AOP錛岃渚嬬▼涓昏瀹炵幇鏄褰昹ogger鍔熻兘錛岄氳繃Picocontainer鍙互浣跨敤綆鍗曚竴琛岋紝浣挎墍鏈夌殑搴旂敤綾葷殑璁板綍鍔熻兘嬋媧匯?/p>

棣栧厛緙栧埗涓涓褰曟帴鍙o細(xì)

public interface Logging {

銆銆public void enableLogging(Log log);

}

鏈変竴涓狶ogSwitcher綾伙紝涓昏鐢ㄦ潵嬋媧誨叿浣撳簲鐢ㄤ腑鐨勮褰曞姛鑳斤細(xì)

import org.apache.commons.logging.Log;
public class LogSwitcher
{
銆 protected Log m_log;
銆 public void enableLogging(Log log) {
銆銆銆銆m_log = log;
銆銆銆銆m_log.info("Logging Enabled");
銆銆}
}

涓鑸殑鏅氬簲鐢↗avaBeans閮藉彲浠ョ戶鎵胯繖涓被錛屽亣璁綪icoUserManager鏄竴涓敤鎴風(fēng)鐞嗙被錛屼唬鐮佸涓嬶細(xì)

public class PicoUserManager extends LogSwitcher
{

銆銆..... //鐢ㄦ埛綆$悊鍔熻兘
}
public class PicoXXXX1Manager extends LogSwitcher
{

銆銆..... //涓氬姟鍔熻兘
}
public class PicoXXXX2Manager extends LogSwitcher
{

銆銆..... //涓氬姟鍔熻兘
}

娉ㄦ剰LogSwitcher涓璍og瀹炰緥鏄敱澶栫晫璧嬩簣鐨勶紝涔熷氨鏄鍗沖皢琚鐣屾敞灝勮繘鍏ワ紝涓嬮潰鐪嬬湅浣跨敤Picocontainer鏄浣曟敞灝凩og鐨勫叿浣撳疄渚嬬殑銆?/p>


DefaultPicoContainer container = new DefaultPicoContainer();
container.registerComponentImplementation(PicoUserManager.class);
container.registerComponentImplementation(PicoXXXX1Manager.class);
container.registerComponentImplementation(PicoXXXX2Manager.class);
.....

Logging logging = (Logging) container.getComponentMulticaster();

logging.enableLogging(new SimpleLog("pico"));//嬋媧籰og

銆銆鐢變笂浠g爜鍙錛岄氳繃浣跨敤綆鍗曚竴琛宭ogging.enableLogging()鏂規(guī)硶浣挎墍鏈夌殑搴旂敤綾葷殑璁板綍鍔熻兘嬋媧匯傝繖鏄笉鏄被浼糀OP鐨刟dvice瀹炵幇錛?/p>

銆銆鎬諱箣錛屼嬌鐢↖oc妯″紡錛屽彲浠ヤ笉綆″皢鏉ュ叿浣撳疄鐜幫紝瀹屽叏鍦ㄤ竴涓娊璞″眰嬈¤繘琛屾弿榪板拰鎶鏈灦鏋勶紝鍥犳錛孖oc妯″紡鍙互涓哄鍣ㄣ佹鏋朵箣綾葷殑杞歡瀹炵幇鎻愪緵浜?jiǎn)鍏蜂綋鐨勫疄鐜版墜娈靛Q屽睘浜庢灦鏋勬妧鏈腑涓縐嶉噸瑕佺殑妯″紡搴旂敤銆侸閬撶殑JdonSD妗嗘灦涔熶嬌鐢ㄤ簡(jiǎn)Ioc妯″紡銆?/p>

]]>
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