Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 c_Lcsn
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 svRYdInBNu
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 YwU[kr-i
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 (,I9|
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分页支持类: yN{TcX
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java代码: ]Ei*I}
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package com.javaeye.common.util; W4p4[&c|
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import java.util.List; V/Q/Ujgg
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publicclass PaginationSupport { `Rx\wfr}
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publicfinalstaticint PAGESIZE = 30; cq"#[y$r
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privateint pageSize = PAGESIZE; S1a6uE
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privateList items; @iBaJ"*,
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privateint totalCount; cD ?'lB-
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privateint[] indexes = newint[0]; c&'5r OY~
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privateint startIndex = 0; i\dd
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public PaginationSupport(List items, int S*V!t=
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totalCount){ M
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setPageSize(PAGESIZE); }v6@yU
setTotalCount(totalCount); \49s;\I]
setItems(items); MW|R)gt
setStartIndex(0); Ejj+%)n.
} 7;9 Jn
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public PaginationSupport(List items, int }"M5"?
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totalCount, int startIndex){ H,EGB8E2
setPageSize(PAGESIZE); 7O,!67+^~
setTotalCount(totalCount); t!\B6!Fo
setItems(items); v}TFM
setStartIndex(startIndex); R(f6uO!m
} R$bDj>8
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public PaginationSupport(List items, int l4ru0V8s7
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totalCount, int pageSize, int startIndex){ -I[K IeF
setPageSize(pageSize); q!{>Nlk
setTotalCount(totalCount); nd }Z[)
setItems(items); uyvjo)T
setStartIndex(startIndex); Lk.tEuj=82
} 0ax;Q[z2
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publicList getItems(){ sh*/wM
return items; KNjU!Z/4
} VIg6'
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publicvoid setItems(List items){ WAf"|
this.items = items; z"-oD*ICw
} 3mhjwgP<nn
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publicint getPageSize(){ }#S1!TU
return pageSize; x@3cZd0j#
} v.hQ9#:
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publicvoid setPageSize(int pageSize){ .DM-&P
this.pageSize = pageSize; qRHT~ta-?
} l{*Ko~g
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publicint getTotalCount(){ &+3RsIlW
return totalCount; 2"c 5<
} biV NZdA
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publicvoid setTotalCount(int totalCount){ @`ii3&W4
if(totalCount > 0){ A4(k<<xjE
this.totalCount = totalCount; >+DMTV[O
int count = totalCount / z[@i=avPG
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pageSize; N 1ydL
if(totalCount % pageSize > 0) {< EPm&q
count++; DTa!vg
indexes = newint[count]; KTBtLUH]*F
for(int i = 0; i < count; i++){ 8`6G_:&X
indexes = pageSize * hM[3l1o{|
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} t+K1ArQc
}else{ o2cc3`*8d
this.totalCount = 0; C_JO:$\rE
} xGFbh4H=8p
} PpH
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publicint[] getIndexes(){ QN|=/c<U
return indexes; I1rB,%p
} jT!?lqr(Rb
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publicvoid setIndexes(int[] indexes){ yFS{8yrRUU
this.indexes = indexes; )FPn_p#3]
} 1;'-$K`}
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publicint getStartIndex(){ IZ\fvYp
return startIndex; iSUu3Yv,_m
} f( Dtv
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publicvoid setStartIndex(int startIndex){ BO7XN;
if(totalCount <= 0) K|OPtYeb
this.startIndex = 0; <EcxNj1
elseif(startIndex >= totalCount) UR9\g(
this.startIndex = indexes .<Jv=
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[indexes.length - 1]; ^b}Wl0Fn
elseif(startIndex < 0) hgzNEx%^q
this.startIndex = 0; HVhP |+
else{ 2i;ox*SfpU
this.startIndex = indexes ,I ][
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[startIndex / pageSize]; +S[3HX7H
} N3*1,/,l.
} 4T;<`{]
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publicint getNextIndex(){ vU5}E\Ny
int nextIndex = getStartIndex() + -|f0;Fl
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pageSize; O|)b$H_
if(nextIndex >= totalCount) n\V7^N
return getStartIndex(); eB=&(ZT
else k`A39ln7wu
return nextIndex; X,#~[%h$-=
} hqlQ-aytS
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publicint getPreviousIndex(){ erbk(
int previousIndex = getStartIndex() - HZ2W`wo
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pageSize; 3-, W?
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if(previousIndex < 0) "P54|XIJ\
return0; NdSuOkwwt
else h3&|yS|
return previousIndex; ;gSRpTS:
} 3fB]uq+eD%
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} AO]cnhC
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抽象业务类 vJ=Q{_D=\
java代码: pMy:h
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/** *B}O
* Created on 2005-7-12 6}e*!,2Xj
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package com.javaeye.common.business; m%apGp'=1
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import java.io.Serializable; 7`&ISRU4
import java.util.List; k4dC
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import org.hibernate.Criteria; {GLGDEb
import org.hibernate.HibernateException; _p+E(i 9
import org.hibernate.Session; m,!SDCq
import org.hibernate.criterion.DetachedCriteria; RR
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import org.hibernate.criterion.Projections; rzn,NFI
import la_c:#ho
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org.springframework.orm.hibernate3.HibernateCallback; 1ONkmVtL
import )y;7\-K0
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org.springframework.orm.hibernate3.support.HibernateDaoS $P?^GB>u
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upport; ]VLseF
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import com.javaeye.common.util.PaginationSupport; _UPfqC ?
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public abstract class AbstractManager extends OM&GypP6&
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HibernateDaoSupport { 3u$1W@T(
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privateboolean cacheQueries = false; SnQT1U%
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privateString queryCacheRegion; T!KwRxJ23
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publicvoid setCacheQueries(boolean N\ !
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cacheQueries){ jxkjPf?
this.cacheQueries = cacheQueries; qE8aX*A1/
} 3S7"P$q
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publicvoid setQueryCacheRegion(String aYb97}kI
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queryCacheRegion){ G_S>{<[
this.queryCacheRegion = /~ {`!30
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queryCacheRegion; uI/
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} WXY'%G
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publicvoid save(finalObject entity){ 4A!]kj5T
getHibernateTemplate().save(entity); c Pf_B=
} ;x/eb g
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publicvoid persist(finalObject entity){ z m$Sw0#(
getHibernateTemplate().save(entity); gE#'Zv {7
} Pp tuXq%U
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publicvoid update(finalObject entity){ 5z!$=SFz
getHibernateTemplate().update(entity); bPU
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} P U/<7P*
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publicvoid delete(finalObject entity){ |2u=3#Jp
getHibernateTemplate().delete(entity); :]@c%~~!&
} hDW!pnj1
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publicObject load(finalClass entity, VIP7j(#t_g
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finalSerializable id){ !ka* rd
return getHibernateTemplate().load ,
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(entity, id); 5dj@N3ZX7;
} QkdcW>:a7
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publicObject get(finalClass entity, "^n,(l*4x
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finalSerializable id){ 7#0buXBg
return getHibernateTemplate().get c>B1cR
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(entity, id); "0P`=n
} t~->&Ja
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publicList findAll(finalClass entity){ ZNX38<3h
return getHibernateTemplate().find("from qq| 5[I.?
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} N>!:bF
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publicList findByNamedQuery(finalString F~mIV;BP
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namedQuery){ "La;$7ds
return getHibernateTemplate <W"W13*j!
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().findByNamedQuery(namedQuery); ]dpL
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} "?I#!t%'
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publicList findByNamedQuery(finalString query, Wh)D_
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finalObject parameter){ 7Q}pKq]P
return getHibernateTemplate Qd[_W^QI
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().findByNamedQuery(query, parameter); }Y~Dk]*
} &]nx^C8V;
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publicList findByNamedQuery(finalString query, ^`&'u_B!+
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finalObject[] parameters){ zw/AZLS
return getHibernateTemplate fE-R(9K
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().findByNamedQuery(query, parameters); ZEP?~zV\A
} Z}J5sifr
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publicList find(finalString query){ O
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return getHibernateTemplate().find q<JCgO-F<
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(query); WAa45G
} m8q4t,<J
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publicList find(finalString query, finalObject >t+U`6xK
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parameter){ S
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return getHibernateTemplate().find B/twak\
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(query, parameter); X0lPRk53(
} ge~@}iO@
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public PaginationSupport findPageByCriteria :<QknU}dwy
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(final DetachedCriteria detachedCriteria){ <xI<^r'C9e
return findPageByCriteria 7oE0;'
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); H+v&4} f
} 77P\:xc
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public PaginationSupport findPageByCriteria i?x gV_q;
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(final DetachedCriteria detachedCriteria, finalint 8Zr;n`~
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startIndex){ Q_5l.M/9]
return findPageByCriteria ;J%:DD
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(detachedCriteria, PaginationSupport.PAGESIZE, 380` >"D
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startIndex); K d&/9<{>
} [h/T IGE\
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public PaginationSupport findPageByCriteria LgqQr6y"
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(final DetachedCriteria detachedCriteria, finalint V=O52?8
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pageSize, =rjU=3!&(
finalint startIndex){ E/;t6&6
return(PaginationSupport) hZ&KE78?
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getHibernateTemplate().execute(new HibernateCallback(){ 0=Z[6Q@:
publicObject doInHibernate LrB
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(Session session)throws HibernateException { d$t"Vp
Criteria criteria = >jm(2P(R
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detachedCriteria.getExecutableCriteria(session); s,z~qL6&
int totalCount = -F 5BJk
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((Integer) criteria.setProjection(Projections.rowCount 6u[fCGi%
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()).uniqueResult()).intValue(); (b&g4$!x&5
criteria.setProjection 7=^{~5#
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(null); I/E 9:
List items = +VIA@`4
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criteria.setFirstResult(startIndex).setMaxResults je] DR~
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(pageSize).list(); oPe|Gfv\G
PaginationSupport ps = #;[G>-tC
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new PaginationSupport(items, totalCount, pageSize, 56V|=MzX]
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startIndex); O?uICnmi6
return ps; ,i>`Urd
} sSM"~_y\
}, true); q lc@$
} 2Tp2{"sB>A
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public List findAllByCriteria(final VotC YJ
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DetachedCriteria detachedCriteria){ rXx#<7`
return(List) getHibernateTemplate uwe#&