Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 1GK>&;
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 *l=(?Pe<
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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 PjH'5Y
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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 @5ud{"|2
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分页支持类: cqSXX++CS,
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java代码: dDIR~!T
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package com.javaeye.common.util; <f M}Kk
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import java.util.List; `j(._`8%a
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publicclass PaginationSupport { Gx6%Z$2n
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publicfinalstaticint PAGESIZE = 30; o+7)cI
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privateint pageSize = PAGESIZE; Jv+w{"&
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privateList items; O^j*"#f
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privateint totalCount; ');vc~C
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privateint[] indexes = newint[0]; N9-7YQ`D
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privateint startIndex = 0; U||GeEd
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public PaginationSupport(List items, int YWvD+
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totalCount){ qz{9ND|)
setPageSize(PAGESIZE); M/dgW`c
setTotalCount(totalCount); @uldD"MJ<]
setItems(items); [
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setStartIndex(0); vg1JN"S[
} r
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public PaginationSupport(List items, int \yC /OLXq
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totalCount, int startIndex){ #79[Qtkrhm
setPageSize(PAGESIZE); &29jg_'W
setTotalCount(totalCount); | @$I<
setItems(items); ao"2kqa)r
setStartIndex(startIndex); 6Eu(C]nC(
} PXkpttIE]M
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public PaginationSupport(List items, int }b&lHr'Uw
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totalCount, int pageSize, int startIndex){ oV0T
setPageSize(pageSize); 9K/EteS
setTotalCount(totalCount); 2Y23!hw
setItems(items); [I3Nu8
setStartIndex(startIndex); 5dI=;L>D
} J\Pb/9M/
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publicList getItems(){ XhHgXVVGG<
return items; OyF=G^w
} R`Z"ey@C
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publicvoid setItems(List items){ _ERtL5^
this.items = items; G<n75!
} M|mfkIk0MB
]}XDDPbZ}
publicint getPageSize(){ $Gv@lZ@=
return pageSize; >kK@tJn
} ZBK0`7#&EH
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publicvoid setPageSize(int pageSize){ i7XY3yhC
this.pageSize = pageSize; YWl#!"-
} lAP k/G
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publicint getTotalCount(){ -smN}*3[
return totalCount; 0Eb4wupo
} EXCE^Vw
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publicvoid setTotalCount(int totalCount){ 1>j,v+
if(totalCount > 0){ *k62Qz3
this.totalCount = totalCount; u,So+%
int count = totalCount / *VsVCUCz5*
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pageSize; P'lnS&yA
if(totalCount % pageSize > 0) FL^ _)`
count++; b;UBvwY_
indexes = newint[count]; tfGs|x
for(int i = 0; i < count; i++){ j'z#V_S
indexes = pageSize * W_`]7RO8
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} .iRKuBM/
}else{ +ig%_QED[\
this.totalCount = 0; Lc{arhN
} @"MYq#2c$
} M/=36{,w-
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publicint[] getIndexes(){ /B@{w-N
return indexes; a31e.36g
} !Ud'(iGa
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publicvoid setIndexes(int[] indexes){ m6ge
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this.indexes = indexes; w5HIR/kP
} m7'<k1#"Y
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publicint getStartIndex(){ 6MT
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return startIndex; sX%n` L
} ~{/M_
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publicvoid setStartIndex(int startIndex){ f[k#Znr
if(totalCount <= 0) iH }-
this.startIndex = 0; Xkhd"Axi
elseif(startIndex >= totalCount) a.Z@Z!*
this.startIndex = indexes noxJr/A]
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[indexes.length - 1]; o:AfEoH"~
elseif(startIndex < 0) %;k Hnl
this.startIndex = 0; eUA]OF@
else{ >o?v[:u*
this.startIndex = indexes 4f[%Bb
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[startIndex / pageSize]; >9&31wA_
} u[b |QR=5
} e
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publicint getNextIndex(){ wsWFD xR
int nextIndex = getStartIndex() + {=ox1+d
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pageSize; oZvG Kf
if(nextIndex >= totalCount) 4`5yrCd
return getStartIndex(); )R JEOl1
else q*&R&K;q
return nextIndex; ~(^P(
} 2IJK0w@
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publicint getPreviousIndex(){ :25LQf^nz
int previousIndex = getStartIndex() - 7Bp7d/R-
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pageSize; A`Z/B[)
if(previousIndex < 0) M/?,Qii
return0; B}iEhWO6
else h3CA,$HJ
return previousIndex; SndR:{
} ODxZO3
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抽象业务类 j,k3]bP
java代码: h !^=
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/** Du+W7]yCl
* Created on 2005-7-12 %\m"Yi]
*/ ;,&cWz
package com.javaeye.common.business; 3v8LzS3@
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import java.io.Serializable; n3a.)tcC
import java.util.List; _%nz-I
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import org.hibernate.Criteria; pE5v~~9Ikv
import org.hibernate.HibernateException; HuevDy4
import org.hibernate.Session; `L'g<VK;
import org.hibernate.criterion.DetachedCriteria; RxP H[7oZ
import org.hibernate.criterion.Projections; yix[zfQt0
import 6zi>Q?] 1
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org.springframework.orm.hibernate3.HibernateCallback; ]q]xU,
import n=.P46|
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org.springframework.orm.hibernate3.support.HibernateDaoS G*CPj^O
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upport; m{/7)2.
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import com.javaeye.common.util.PaginationSupport; f<YYo
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public abstract class AbstractManager extends <`}P
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HibernateDaoSupport { n Nt28n@
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privateboolean cacheQueries = false; ^D+J
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privateString queryCacheRegion; I!sT=w8V
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publicvoid setCacheQueries(boolean n>Ff tVZNJ
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cacheQueries){ ~aob@(
this.cacheQueries = cacheQueries; 8SGaS&
} 9wvlR6z;u
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publicvoid setQueryCacheRegion(String L+am-k:T~
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queryCacheRegion){ NAR6q{c
this.queryCacheRegion = :viW
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queryCacheRegion; lzEynMO+
} qe0 D[L
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publicvoid save(finalObject entity){ 76nH)^%l<
getHibernateTemplate().save(entity); ~YYnn7)
} Su#0F0
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publicvoid persist(finalObject entity){ `'YX>u /
getHibernateTemplate().save(entity); idI w7hi4
} a1Fx|#!
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publicvoid update(finalObject entity){ S_ATsG*(
getHibernateTemplate().update(entity); 4 PK}lc
} n!jmxl$
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publicvoid delete(finalObject entity){ aO' #!k*R
getHibernateTemplate().delete(entity); )^j_O^T5
} um2a#6uo
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publicObject load(finalClass entity, x?h/e;
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finalSerializable id){ 2\xw2VQ@P
return getHibernateTemplate().load ~7]V^tG
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(entity, id); {r^_ g(.q
} :Jd7q.
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publicObject get(finalClass entity, 1h,iWHC
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finalSerializable id){ &.)=>2
return getHibernateTemplate().get |2(q9j
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(entity, id); @Cj!MZ=T
} $RD~,<oEm
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publicList findAll(finalClass entity){ '/d51
return getHibernateTemplate().find("from RN$vKJk
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" + entity.getName()); (5yM%H8:
} aacy5E
}`tSRB7
publicList findByNamedQuery(finalString ;+Jx,{)
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namedQuery){ 8D*7{Q
return getHibernateTemplate 1.3#PdMR,
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().findByNamedQuery(namedQuery); M:+CW;||!
} ;blL\|ch;
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publicList findByNamedQuery(finalString query, H/,KY/>i
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finalObject parameter){ ^m\o(R
return getHibernateTemplate Kd\0nf6
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().findByNamedQuery(query, parameter); j\y;~
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} Ymut]`dX
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publicList findByNamedQuery(finalString query, +f3Rzx]
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finalObject[] parameters){ Hm-#Mpw
return getHibernateTemplate YI0
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().findByNamedQuery(query, parameters); A7p4M?09
} jv)+qmqo!
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publicList find(finalString query){ "HOZ2_(o
return getHibernateTemplate().find Sn=6[RQ>P
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(query); T4eJ:u* ;
} I68u%fCv
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publicList find(finalString query, finalObject 8v$q+Wic
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parameter){ T7[@ lMa?
return getHibernateTemplate().find O
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(query, parameter); J)|3jbX"I]
} Y>x{ [er
@*;x1A-]V
public PaginationSupport findPageByCriteria CK_dEh2c
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(final DetachedCriteria detachedCriteria){ R7::f\I
return findPageByCriteria v+ $3
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); 'Ru(`"
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} qCs/sW
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public PaginationSupport findPageByCriteria pbMANZU[
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(final DetachedCriteria detachedCriteria, finalint -&/?&{Q0
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startIndex){ "x,lL
return findPageByCriteria &;PxDlY5
JE.$]){
(detachedCriteria, PaginationSupport.PAGESIZE, $AK
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startIndex); 7oZ:/6_>
} \u[x<-\/6
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public PaginationSupport findPageByCriteria H<Snp)
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(final DetachedCriteria detachedCriteria, finalint F`D$bE;|
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pageSize, N/a4Gl(
finalint startIndex){ |Ajd$+3
return(PaginationSupport) J;4x$BI
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getHibernateTemplate().execute(new HibernateCallback(){ 9q;O`&
publicObject doInHibernate !BQt+4G7
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(Session session)throws HibernateException { *i"9D:
Criteria criteria = xm m,-u
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detachedCriteria.getExecutableCriteria(session); ~j!n`#.\
int totalCount = i"Jy>'
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((Integer) criteria.setProjection(Projections.rowCount T?3Q<[SmI
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()).uniqueResult()).intValue(); [S6u:;7
criteria.setProjection fUw:jExz
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(null); x^s,<G
List items = f;E#CjlTL
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criteria.setFirstResult(startIndex).setMaxResults ieyK$q
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(pageSize).list(); := V?;
PaginationSupport ps = 9<mMU:
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new PaginationSupport(items, totalCount, pageSize, A7 RI&g
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startIndex); }*x1e_m}H
return ps; QqM[W/&R
} P(T-2Ux6
}, true); Ca-"3aQkc
} f2gtz{r
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public List findAllByCriteria(final f_k'@e {
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DetachedCriteria detachedCriteria){ - %fQr5
return(List) getHibernateTemplate 4"&-a1N
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().execute(new HibernateCallback(){ y|LHnNQ
publicObject doInHibernate /^=1]+_!
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(Session session)throws HibernateException { -2.7Z`*(
Criteria criteria = jKUEs75]
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detachedCriteria.getExecutableCriteria(session); {B+}LL!
return criteria.list(); [ycX)iM
} |/,SNE
}, true); "uH>S+%|b
} 0i~U(qoI
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public int getCountByCriteria(final J|WE&5'
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DetachedCriteria detachedCriteria){ y
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Integer count = (Integer) R ]Ev=V'U
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getHibernateTemplate().execute(new HibernateCallback(){ :9&