Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 "<#-#j
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 aZk/\&=6
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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 :75$e%'A
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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 -=tf)
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分页支持类: e d=pRb
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java代码: O!,WH?r
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package com.javaeye.common.util; x344}\
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import java.util.List; h.QsI`@f
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publicclass PaginationSupport { y4V~fg;
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publicfinalstaticint PAGESIZE = 30; hPb erc2
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privateint pageSize = PAGESIZE; 0TD cQ
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privateList items; _F2R
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privateint totalCount; xg|\\i
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privateint[] indexes = newint[0]; #><P28m
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privateint startIndex = 0; JQo"<<[
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public PaginationSupport(List items, int ?4[IIX-
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totalCount){ fP:n=A{
setPageSize(PAGESIZE); ^`HP&V
setTotalCount(totalCount); 2"'<Yk9
setItems(items); 4
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setStartIndex(0); $N}nO:`t
} ZFJqI
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public PaginationSupport(List items, int Ib~n}SA
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totalCount, int startIndex){ K5h2 ~
setPageSize(PAGESIZE); aX)k(*|
setTotalCount(totalCount); fcim4dfP
setItems(items); >dr34=(
setStartIndex(startIndex); r Ljb'\<*
} 0LjF$3GpZ
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public PaginationSupport(List items, int +K@wh
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totalCount, int pageSize, int startIndex){ VV$$t;R/
setPageSize(pageSize); nx2iEXsa
setTotalCount(totalCount); vFz#A/1
setItems(items); @`IMR$'
setStartIndex(startIndex); G1X${x7
} !"G|y4O
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publicList getItems(){ &&Uc%vIN
return items; "f1`6cx6
} *(?tf{
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publicvoid setItems(List items){ /qKO9M5A
this.items = items; y5p)z"
} "8NhrUX
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publicint getPageSize(){ zL%ruWNG
return pageSize; MYmH?A
} )6t=Bel
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publicvoid setPageSize(int pageSize){ BDO]-y
this.pageSize = pageSize; \qo}}I>e
} 0+iaO"%
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publicint getTotalCount(){ 8Hf:yG,
return totalCount; .$rt>u,8<
} \i2S'AblYq
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publicvoid setTotalCount(int totalCount){ odm!}stus
if(totalCount > 0){ c9
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this.totalCount = totalCount; b:c$EPK
int count = totalCount / _wY<8 F*
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pageSize; ]y**ZFA
if(totalCount % pageSize > 0) kwM1f=!-
count++; W/\M9
indexes = newint[count]; Jn+k$'6%#
for(int i = 0; i < count; i++){ -J`VXG:M
indexes = pageSize * IHrG!owf
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} ;ATn&
}else{ _
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this.totalCount = 0; G<MX94?
} v5/2-<6x
} "Q[rM1R
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publicint[] getIndexes(){ CZ~%qPwDw
return indexes; $3BH82
} p
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publicvoid setIndexes(int[] indexes){ m,qMRcDF
this.indexes = indexes; 0&W*U{0F\
} e*Y>+*2y
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publicint getStartIndex(){ zDD1EycH
return startIndex; F.DRGi.i
} }[2|86,G;
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publicvoid setStartIndex(int startIndex){ :mI[fQ
if(totalCount <= 0) vz*'1ugaA
this.startIndex = 0; ^(:Z*+X~>
elseif(startIndex >= totalCount) m0a <~
this.startIndex = indexes Z2t
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[indexes.length - 1]; kzb%=EI
elseif(startIndex < 0) ^=1:!'*3D
this.startIndex = 0; =_@Q+N*]|(
else{ Yqz
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this.startIndex = indexes #% 1|$V*:
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[startIndex / pageSize]; o=}vK[0u
} $yi[wwf4
} op|:XLR5
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publicint getNextIndex(){ `Cv@16
int nextIndex = getStartIndex() + "(QI7:iM
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pageSize; zNo(|;19
if(nextIndex >= totalCount) 'y?
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return getStartIndex(); KsG>,#
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else sZ7RiH+I
return nextIndex; /BaXWrd+
} Li{R?Osx
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publicint getPreviousIndex(){ "+BNas^rF
int previousIndex = getStartIndex() - _]/&NSk
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pageSize; f:K3 P[|
if(previousIndex < 0) IW&.JNcN
return0; aP}%&{iC*
else h]w5N2$}?
return previousIndex; qbunP!
} -gzY~a
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}
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{-'S#04
抽象业务类 4pw:O^v
java代码: Rc.8j,]
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/** E{#Y=
* Created on 2005-7-12 !J%m 7A
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package com.javaeye.common.business; f|cF[&wo
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import java.io.Serializable; L(ni6-
import java.util.List; Q=!f,
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import org.hibernate.Criteria; I,Z'ed..
import org.hibernate.HibernateException; `JrvD
import org.hibernate.Session; MV,;l94?%=
import org.hibernate.criterion.DetachedCriteria; 8>(DQ"h
import org.hibernate.criterion.Projections; OD~TWT_
import wRLj>nc
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org.springframework.orm.hibernate3.HibernateCallback; aN}l&4d
import zr1,A#BV
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org.springframework.orm.hibernate3.support.HibernateDaoS <Ky6|&!
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upport; HbUadPr
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import com.javaeye.common.util.PaginationSupport; Ts~)0
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public abstract class AbstractManager extends Zt7Gf
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HibernateDaoSupport { F,l%SQCyj
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privateboolean cacheQueries = false; =nTNL .SX
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privateString queryCacheRegion; fmv8)$W#U
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publicvoid setCacheQueries(boolean SyWLPh
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cacheQueries){ c{SD=wRt,y
this.cacheQueries = cacheQueries; ^ 1 P@BRh
} n!>#o1Qr
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publicvoid setQueryCacheRegion(String cYafQyU
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queryCacheRegion){ (wtw1E5X
this.queryCacheRegion = ^9zFAY.|
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queryCacheRegion; 1}$GVb%i
} wzka4J {
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publicvoid save(finalObject entity){ HxXCxI3
getHibernateTemplate().save(entity); nP+]WUnY
} zs_^m1t1s
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publicvoid persist(finalObject entity){ 0k7kmDW
getHibernateTemplate().save(entity); ~=pAy>oV
} _H(:$=$Q
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publicvoid update(finalObject entity){ eK]$8l|LI
getHibernateTemplate().update(entity); IUJRP
} fsxZQ=-PW
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publicvoid delete(finalObject entity){
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getHibernateTemplate().delete(entity); nYv`{0S+m
} Oy `2ccQ#
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publicObject load(finalClass entity, |,G=k,?_p
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finalSerializable id){ 6}>:sr
return getHibernateTemplate().load -1>$3-ur~
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(entity, id); s7~[7
} DwL4?!E
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publicObject get(finalClass entity, 1 =cFV'
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finalSerializable id){ |4XR [eX
return getHibernateTemplate().get /h!Y/\ kI
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(entity, id); )7j CEA03
} M-B -
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publicList findAll(finalClass entity){ s=uWBh3J
return getHibernateTemplate().find("from h{sY5d'D
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" + entity.getName()); Y.<&phv
} p^s k?E
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publicList findByNamedQuery(finalString .$k2.-k
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namedQuery){ V(Dn!Nz
return getHibernateTemplate >;;tX3(
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().findByNamedQuery(namedQuery); 6.!3g(w
} H(1(H0Kj"
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publicList findByNamedQuery(finalString query, G}lP'9/
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finalObject parameter){ N`DLIv8i;
return getHibernateTemplate ;8G( l
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().findByNamedQuery(query, parameter); #0+`dI_5/
} PUdJ>U
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publicList findByNamedQuery(finalString query, P0En&g+~
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finalObject[] parameters){ dX58nJ4u
return getHibernateTemplate AxN.k
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().findByNamedQuery(query, parameters); {c3u!}mW
} YJ&K0%R
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publicList find(finalString query){ W:8*Z8?7
return getHibernateTemplate().find -%U 15W;
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(query); iE|qU_2Y
} S!<1CFh
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publicList find(finalString query, finalObject ww]^H$In
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parameter){ CFW\
return getHibernateTemplate().find b83__i
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(query, parameter); +!I7(gL
} xz+Y 1fYT
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public PaginationSupport findPageByCriteria A-GRuC
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(final DetachedCriteria detachedCriteria){ T/_JXK>W
return findPageByCriteria Y!kz0([
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); Kzs]+Cl
} x=>+.'K
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public PaginationSupport findPageByCriteria [U]ouh)
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(final DetachedCriteria detachedCriteria, finalint uh~/ybR
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startIndex){ pX:FXzYQ
return findPageByCriteria fC_dSM[{c
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(detachedCriteria, PaginationSupport.PAGESIZE, w2:!yQk_
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startIndex); 5!55v
} \;?=h
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public PaginationSupport findPageByCriteria rpgr5>
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(final DetachedCriteria detachedCriteria, finalint brkR,(#L3
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pageSize, LvJ')HG
finalint startIndex){ D<rO:Er?*a
return(PaginationSupport) VWlOMqL995
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getHibernateTemplate().execute(new HibernateCallback(){ H<M
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publicObject doInHibernate ,t+5(qi
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(Session session)throws HibernateException { mGjxc}
Criteria criteria = ~HwY?[}!m
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detachedCriteria.getExecutableCriteria(session); 8+&] q#W3
int totalCount = C^@.GA
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((Integer) criteria.setProjection(Projections.rowCount yqF$J"=|
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()).uniqueResult()).intValue(); Ul?Ha{W
criteria.setProjection BX|+"AeF
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(null); L%8>deE>;D
List items = p_$03q>oQ
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criteria.setFirstResult(startIndex).setMaxResults :\@WY
f:k3j}&
(pageSize).list(); w#Y<~W&
PaginationSupport ps = 4]N`pD5
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new PaginationSupport(items, totalCount, pageSize, [?<"SJ,`
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startIndex); x@F"ZiYD@O
return ps; G
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} 8k$iz@e
}, true); ,Ty>sZ#/fz
} )*@Oz
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public List findAllByCriteria(final \A\a=A[
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DetachedCriteria detachedCriteria){ ,.`";='o
return(List) getHibernateTemplate WV5gH*uUa
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().execute(new HibernateCallback(){ P5ii3a?R
publicObject doInHibernate X6mY#T'fQ
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(Session session)throws HibernateException { K1Tq7/N
Criteria criteria = `zHtfox!
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detachedCriteria.getExecutableCriteria(session); $;%-<*Co
return criteria.list(); 4uv'l3
} ZpPm>|w
}, true); 9YMUvd,u
} <lM]c
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public int getCountByCriteria(final XF1x*zc
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DetachedCriteria detachedCriteria){ >2gemTy
Integer count = (Integer) vN%zk(?T
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getHibernateTemplate().execute(new HibernateCallback(){ S @\Pki+n[
publicObject doInHibernate yzhr"5_
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(Session session)throws HibernateException { y &\ J
Criteria criteria = 3OV#H%
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detachedCriteria.getExecutableCriteria(session); ^;B
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return 9)sGnD;
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criteria.setProjection(Projections.rowCount |b'fp1<