Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 n1%2sV)>
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 "{8j!+]4i
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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 a~Dk@>+P>
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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 _1[Wv?
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分页支持类: KBM*7raA
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java代码: 3li$)S1z
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package com.javaeye.common.util; U4*u|A
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import java.util.List; e-*@R#x8+
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publicclass PaginationSupport { c:7V..
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publicfinalstaticint PAGESIZE = 30; UYxn?W.g
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privateint pageSize = PAGESIZE; eL~xS: VT
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privateList items; \ Bj{.jL
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privateint totalCount; umns*U%T;
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privateint[] indexes = newint[0]; D\G.p |9=
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privateint startIndex = 0; S3M!"l
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public PaginationSupport(List items, int gy@=)R/~
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totalCount){
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setPageSize(PAGESIZE); s! 2[zJ19p
setTotalCount(totalCount); hZfj$|<
setItems(items); i.'"`pn_
setStartIndex(0); U',C-56z
} msxt'-$M
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public PaginationSupport(List items, int .v(GVkE}
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totalCount, int startIndex){ ,=\.L_'
setPageSize(PAGESIZE); i{m!v6j:
setTotalCount(totalCount); T^Ia^B-%}g
setItems(items); )Zr\W3yWX
setStartIndex(startIndex); .8W-,R4
} m"rht:v5
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public PaginationSupport(List items, int #w.0 Cc
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totalCount, int pageSize, int startIndex){ >%;i@"
setPageSize(pageSize); ?PWg
setTotalCount(totalCount); 6YU,>KP
setItems(items); 8Azh&c
setStartIndex(startIndex); ,r*Kxy
} EF!J#N2
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publicList getItems(){ fD@d.8nXd
return items; Xr=BxBttp
} N `:MF 9
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publicvoid setItems(List items){ 9vP;i= fr
this.items = items; 7)QZ<fme
} Xuu&`U~%
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publicint getPageSize(){ Hk;;+ '-
return pageSize; W6T4Zsg
} [3bPoAr\
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publicvoid setPageSize(int pageSize){ 2`*w*
this.pageSize = pageSize; ~\(c;J*Ir
} [ne51F5_
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publicint getTotalCount(){
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return totalCount; _|US`,kfc
} 5H.~pc2y
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publicvoid setTotalCount(int totalCount){ %IBT85{
if(totalCount > 0){ _U&HXQ8X
this.totalCount = totalCount; UB5H8&Rf!
int count = totalCount / Q k}RcP
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pageSize; 7(]F+\A3
if(totalCount % pageSize > 0) 4ams~
count++; B>c$AS\5y
indexes = newint[count]; /V 09Na,N
for(int i = 0; i < count; i++){ Mq<ob+
indexes = pageSize * Ic4#Tk20i
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} jz_Y|"{`v
}else{ =S{OzF
this.totalCount = 0; :+DrV\)
} SI~jM:S}
} jbipNgxkr
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publicint[] getIndexes(){ cy.r/Z}
return indexes; ~D3S01ecM
} s>o#Ob@4'
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publicvoid setIndexes(int[] indexes){ &*>.u8:r
this.indexes = indexes; :.ZWYze
} Y[f]L4,V
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publicint getStartIndex(){ JrOxnxd^
return startIndex; j yD3Sa3
} R`@T<ob)
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publicvoid setStartIndex(int startIndex){ iOg4(SPci
if(totalCount <= 0) s 4_Dqm
this.startIndex = 0; Zpg;hj5_
elseif(startIndex >= totalCount) enJ;#aA
this.startIndex = indexes Qwpni^D8j
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[indexes.length - 1]; =(
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elseif(startIndex < 0) 2pdeJ
this.startIndex = 0; {EvT7W
else{ IWu=z!mO
this.startIndex = indexes 6=]Gom&S
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[startIndex / pageSize]; 8^}/T#l
} A
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} w@^J.7h^
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publicint getNextIndex(){ r\Y,*e
int nextIndex = getStartIndex() + =F$?`q`
pgES)
pageSize; O8.xt|
if(nextIndex >= totalCount) %urvX$r4K
return getStartIndex(); Rb:H3zh
else 5NZuaN
return nextIndex; zA9q`ePS
} G/p\MzDko
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publicint getPreviousIndex(){ _jG|kjFTc
int previousIndex = getStartIndex() - buX(mj:&
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pageSize; t$n Jmfzm
if(previousIndex < 0) k)-+ZmMOh
return0; 0RA#Y(IR
else B{&W|z{$
return previousIndex; ]]:K
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} T;(,9>Qsu
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抽象业务类 HSNj
java代码: w{DU<e:
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/** ,nYa+e
* Created on 2005-7-12 ?I^$35
*/ h@R n)D
package com.javaeye.common.business; HjA~3l7
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import java.io.Serializable; VYb,Hmm>kC
import java.util.List; Ld*Ds!*'/
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import org.hibernate.Criteria; *,G<X^
import org.hibernate.HibernateException; [Ix6ArY
import org.hibernate.Session; f?.VVlD
import org.hibernate.criterion.DetachedCriteria; KX~
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import org.hibernate.criterion.Projections; RL4|!HzR
import
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org.springframework.orm.hibernate3.HibernateCallback; |_p7vl"
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org.springframework.orm.hibernate3.support.HibernateDaoS \@Cz 32wg
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upport; e*T^:2oRl
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import com.javaeye.common.util.PaginationSupport; CrI<rD%'
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public abstract class AbstractManager extends }Q: CZ
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HibernateDaoSupport { .)tQ&2
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privateboolean cacheQueries = false; Ewz cB\m
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privateString queryCacheRegion; ^Ak?2,xB#+
@Dsw.@/
publicvoid setCacheQueries(boolean `/T.u&QF
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cacheQueries){ W^3 Jg2gE
this.cacheQueries = cacheQueries; \"ogQnmz
} 0"e["q{|
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publicvoid setQueryCacheRegion(String 9`92
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queryCacheRegion){ #L!`n)J"
this.queryCacheRegion = Ec<33i]h*p
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queryCacheRegion; r8 YM#dF
} f`ibP6%
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publicvoid save(finalObject entity){ *^@b0f~vj
getHibernateTemplate().save(entity); >uZc#Zt
} k
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publicvoid persist(finalObject entity){ u^SInanw
getHibernateTemplate().save(entity); C1f$^N
} W[I[Xg&
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publicvoid update(finalObject entity){ R(0[bMr3Q
getHibernateTemplate().update(entity); *P\lzM
} Zq33R`
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publicvoid delete(finalObject entity){ fPTLPcPP
getHibernateTemplate().delete(entity); ih)\P0wed
} >{Ayzz>v
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publicObject load(finalClass entity, N}/V2K]Q
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finalSerializable id){ ]lKUpsQI
return getHibernateTemplate().load d1.@v;
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(entity, id); mN{H^
} zfDfy!\2_
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publicObject get(finalClass entity, ZL0Vx6Ph
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finalSerializable id){ @>VX]Qe^X
return getHibernateTemplate().get 5I[:.o0
}#.OJub
(entity, id); MjQ>&fUK
} 6miXaAA8
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publicList findAll(finalClass entity){ :KC]1_zqR
return getHibernateTemplate().find("from x Y$x=)
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" + entity.getName()); ,^
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} m~=VUhPd
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publicList findByNamedQuery(finalString 1Bs t|
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namedQuery){ _T.`+0UV
return getHibernateTemplate aW_Y
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().findByNamedQuery(namedQuery); VXk[p
} lrkgsv6
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publicList findByNamedQuery(finalString query, 3`D*AFQc
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finalObject parameter){ Jon3ywd1Y
return getHibernateTemplate EpACd8Fb
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().findByNamedQuery(query, parameter); w$s6NBF7
} gZ>&cju
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publicList findByNamedQuery(finalString query, WllQM,h
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finalObject[] parameters){ 'Kmf6iK>[
return getHibernateTemplate {pXX%>
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().findByNamedQuery(query, parameters); "<egm^Yq
} RI'}C`%v
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publicList find(finalString query){ !+Cc^{
return getHibernateTemplate().find TG?>;It&
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(query); ?^:5`
} }|/<!l+;$
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publicList find(finalString query, finalObject 3`3my=
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parameter){ '%|Um3);0p
return getHibernateTemplate().find ~|~ 2B$JeV
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(query, parameter); Zl#';~9W
} (O:&RAkk7
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public PaginationSupport findPageByCriteria 7/]Ra
}`0=\cKqn
(final DetachedCriteria detachedCriteria){ 6L~5qbQ
return findPageByCriteria S{XO3
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); V@G|2ZI
} UaXIrBc
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public PaginationSupport findPageByCriteria T{3-H(-gA
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(final DetachedCriteria detachedCriteria, finalint 4%yeEc;z
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startIndex){ /55 3v;l<
return findPageByCriteria =yJc pj
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(detachedCriteria, PaginationSupport.PAGESIZE, W>CG;x{
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startIndex); M_$;"NS+}
} j~in%|^
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public PaginationSupport findPageByCriteria 6m(+X
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(final DetachedCriteria detachedCriteria, finalint iH)vLD
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pageSize, j}}as
finalint startIndex){ oO
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return(PaginationSupport) %t.\J:WN;
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getHibernateTemplate().execute(new HibernateCallback(){ S}/ZHo
publicObject doInHibernate Y)S
f;
}*P;kV
(Session session)throws HibernateException { XGnC8Be{4
Criteria criteria = h=au`o&CG
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detachedCriteria.getExecutableCriteria(session); F&+_z&n