Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 Y\
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 2IP<6l8N
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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 />uE)R$
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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 F&Rr&m
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分页支持类: "`mG_qHI[
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java代码: fhha-J
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package com.javaeye.common.util; b?<@
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import java.util.List; jaIcIc=Pf
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publicclass PaginationSupport { mR|']^!SE
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publicfinalstaticint PAGESIZE = 30; &x4*YMh
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privateint pageSize = PAGESIZE; -
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privateList items; n?S)H=
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privateint totalCount; 9|NF)~Q}'
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privateint[] indexes = newint[0]; 'R#MH
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privateint startIndex = 0; <e wcWr
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public PaginationSupport(List items, int gt=@v())
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totalCount){ 5A%Uv*
setPageSize(PAGESIZE); ]vw%J ^7:a
setTotalCount(totalCount); p _2Y c]8
setItems(items); 6KE64: \;
setStartIndex(0); 7f*b5$+r
} |o^mg9
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public PaginationSupport(List items, int 1_8@yO
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totalCount, int startIndex){ .x}xa
setPageSize(PAGESIZE); 1suP7o A;
setTotalCount(totalCount); Mp^G7JY,
setItems(items); kX*.BZI}C
setStartIndex(startIndex); k9&W0$I#
} Gs4t6+Al
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public PaginationSupport(List items, int WopA7J,
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totalCount, int pageSize, int startIndex){ IU"n`HS
setPageSize(pageSize); f1B t6|W%
setTotalCount(totalCount); dIA1\;@
setItems(items); [(vV45(E
setStartIndex(startIndex); IK8"3+(
} cnDF`7xrT
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publicList getItems(){ @udc/J$
return items; =(bTS n
} \_)mWK,h
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publicvoid setItems(List items){ <W^>:!?w
this.items = items; ^e80S^
} j#l1KO^y
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publicint getPageSize(){ &Gm3
return pageSize; z)R\WFBW
} RF~c/en
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publicvoid setPageSize(int pageSize){ #wGOlW;R
this.pageSize = pageSize; [t*-s1cq
} @# .a5
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publicint getTotalCount(){ !nQoz^_`P
return totalCount; `2j"Z.=
} 3qDuF
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publicvoid setTotalCount(int totalCount){ PpSQf14,
if(totalCount > 0){ R#ya9GN{
this.totalCount = totalCount; qg*xdefQ%
int count = totalCount / xj5MKX{CJT
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pageSize; 3'7X[{uBr
if(totalCount % pageSize > 0) n0uL^{B
count++; VT;cz6"6b4
indexes = newint[count]; _z#S8Y
for(int i = 0; i < count; i++){ kPSi6ci
indexes = pageSize * >^v,,R8j
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} z:08;}t
}else{ 1NAtg*`
this.totalCount = 0; `R-VJR 2"
} c=Zurqj
} 3)l<'~"z<
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publicint[] getIndexes(){ &hWYw+yH\
return indexes; Q:]v4/MT
} }dEf |6_
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publicvoid setIndexes(int[] indexes){ `Tr !Gj_
this.indexes = indexes; .]; `
} R1/mzPG
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publicint getStartIndex(){ B^j(Fq
return startIndex; WmblY2
} C-(O*hK
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publicvoid setStartIndex(int startIndex){ LEAU3doK;
if(totalCount <= 0) LOk J
this.startIndex = 0; 1R#1Fy%
elseif(startIndex >= totalCount) Enhrkk
this.startIndex = indexes zbDK$g6
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[indexes.length - 1]; :|=Xh"l"
elseif(startIndex < 0) @[;$R@M_3
this.startIndex = 0; OuB[[L
else{ 0}\8,U
this.startIndex = indexes k[1w] l8
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[startIndex / pageSize]; n&E/{o(
} "ZG2olOqLI
} [t]q#+Zs
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publicint getNextIndex(){ Z}>+!Z
int nextIndex = getStartIndex() + )2bbG4:N
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pageSize; wR9gx-bE
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if(nextIndex >= totalCount) K` <`l
return getStartIndex(); -B:O0;f
else *C(q{|f
return nextIndex; N&W7g#F
} i6k~j%0m
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publicint getPreviousIndex(){ ::Pf\Lb>
int previousIndex = getStartIndex() - sP%J`L@h
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pageSize; wOR#sp&
if(previousIndex < 0) =jvN8R*[
return0; ^;cJjl'=
else 2VkA!o4nP
return previousIndex; K$-|7tJon
} 22D,,nC0+=
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^
} ?xo<Fv
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抽象业务类 ,.,Y{CP
java代码: V V Aw y6
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/** /O$)m[
* Created on 2005-7-12 SqT+rvTh
*/ fXAD~7T*s
package com.javaeye.common.business; #s-li b
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import java.io.Serializable; lDG.\u
import java.util.List; Y=
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import org.hibernate.Criteria; -V}ZbXJD
import org.hibernate.HibernateException; Oz.Zxw
import org.hibernate.Session; \LDcIK=
import org.hibernate.criterion.DetachedCriteria; oX[I4i%G
import org.hibernate.criterion.Projections; (9!kKMQW'
import SSr2K
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org.springframework.orm.hibernate3.HibernateCallback; liVDBbS_A?
import l78:.
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org.springframework.orm.hibernate3.support.HibernateDaoS ~;nW+S$o
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upport; 9S)A6]
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import com.javaeye.common.util.PaginationSupport; S3YAc4
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public abstract class AbstractManager extends %l)~C%T
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HibernateDaoSupport { Q37zBC0
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privateboolean cacheQueries = false; Z/I`XPmk
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privateString queryCacheRegion; bqUQadDB
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publicvoid setCacheQueries(boolean 3hNb
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cacheQueries){ X] t *
this.cacheQueries = cacheQueries; -!ERe@k(
} SP5t=#M6
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publicvoid setQueryCacheRegion(String o`[X _
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queryCacheRegion){ vX}mwK8
this.queryCacheRegion = }i2dXC/
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queryCacheRegion; s&qr2'F+z
} ^ px)W,O
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publicvoid save(finalObject entity){ \fD[Ej
getHibernateTemplate().save(entity); r#K" d
} 58_aI?~>>
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publicvoid persist(finalObject entity){ 2v\-xg%1
getHibernateTemplate().save(entity); .@]M'S^1
} ^b(>Bg)T
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publicvoid update(finalObject entity){ IctLhYZ
getHibernateTemplate().update(entity); dLTA21b#
} \)9R1zp/x
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publicvoid delete(finalObject entity){ 'P~6_BW
getHibernateTemplate().delete(entity); (ZuV5|N
} eFCXjM
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publicObject load(finalClass entity, MFLw^10(T
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finalSerializable id){ u+uu?.bM
return getHibernateTemplate().load auQfWO[ u
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(entity, id); &M^FA=J\
} f*~z|
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publicObject get(finalClass entity, L\UM12
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finalSerializable id){ MEn#MT/Cz
return getHibernateTemplate().get 5Ai$1'*p
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(entity, id); @;@Wt`(2a
} esQRg~aCGy
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publicList findAll(finalClass entity){ \78kShx
return getHibernateTemplate().find("from T?E[LzZg
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" + entity.getName()); dbLxm!;(
} I UxsvW+
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publicList findByNamedQuery(finalString A'X, zw^}
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namedQuery){ abM4G
return getHibernateTemplate bwAL:
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().findByNamedQuery(namedQuery); >qI|g={M
} 3
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publicList findByNamedQuery(finalString query, DY%#E9
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finalObject parameter){ JP<Z3
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return getHibernateTemplate o(@F37r{?
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().findByNamedQuery(query, parameter); !Rw\k'<GKX
} \i#0:3s.
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publicList findByNamedQuery(finalString query, >, }m=X8
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finalObject[] parameters){ yw;!KUKb|
return getHibernateTemplate XP-4=0 zd
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().findByNamedQuery(query, parameters); 4hv'OEl
} ]& qmV
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publicList find(finalString query){ cIgicp}U
return getHibernateTemplate().find OAQ'/{~7
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(query); vv,(ta@t2
} $'Hg}|53
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publicList find(finalString query, finalObject 2O5yS
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parameter){ :I }_
return getHibernateTemplate().find f6P5J|'
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(query, parameter); }?Y+GT"E
} BE}qwP^
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public PaginationSupport findPageByCriteria W$Bx?}x($
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(final DetachedCriteria detachedCriteria){ rLcQG
return findPageByCriteria ^ffh
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); 9D_4]'KG
} #+eV5%Si
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public PaginationSupport findPageByCriteria ud-.R~f{e
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(final DetachedCriteria detachedCriteria, finalint VMW?[j
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startIndex){ 4>^ %_Xj[
return findPageByCriteria 2g^Kf,m
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(detachedCriteria, PaginationSupport.PAGESIZE, hGF(E*
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startIndex); N3H!ptn37
} x9HA^Rj4-
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public PaginationSupport findPageByCriteria T+2I:W%
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(final DetachedCriteria detachedCriteria, finalint [M2,bc8SJV
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pageSize, f|FQd3o)
finalint startIndex){ _wf"E(c3D
return(PaginationSupport) /7h%sCX
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getHibernateTemplate().execute(new HibernateCallback(){ nZN]Q9
publicObject doInHibernate k>n^QHM
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(Session session)throws HibernateException { $(}kau
Criteria criteria = Y^S0K'N
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detachedCriteria.getExecutableCriteria(session); 9#6ilF:F
int totalCount = vVLR9"rHM
tO?*x/XC{
((Integer) criteria.setProjection(Projections.rowCount cVn7jxf
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()).uniqueResult()).intValue(); )11/BB\v
criteria.setProjection ld[]f*RuW
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(null); Dl/UZ@8pl
List items = c e=6EYl
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criteria.setFirstResult(startIndex).setMaxResults zAB-kE\)
k=bv!T_o
(pageSize).list(); n*iaNaU"'
PaginationSupport ps = i`8!Vm
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new PaginationSupport(items, totalCount, pageSize, /IV:JVT
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startIndex); {Rw~G&vQ
return ps; 8gBqur{
} +I\bs.84
}, true); ?67j+)
} |_[mb(<|
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public List findAllByCriteria(final r?/>t1Z
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DetachedCriteria detachedCriteria){ 2 >xV&