Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 8*zORz
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 osM[Xv
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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 +{~cX]|
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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 ^%5;Sc1V
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分页支持类: Xsk/U++
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java代码: f;D(X/"f]
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package com.javaeye.common.util; &s#O iF8
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import java.util.List; *""iXi[
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publicclass PaginationSupport { = }ELu@\V[
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publicfinalstaticint PAGESIZE = 30; }A}cq!I^
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privateint pageSize = PAGESIZE; *epK17i=
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privateList items; U|
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privateint totalCount; 8q]_> X
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privateint[] indexes = newint[0]; bblEZ%
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privateint startIndex = 0; .TeGA;
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public PaginationSupport(List items, int 5X PoQ^
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totalCount){ ;.66phe
setPageSize(PAGESIZE); dvE~EZcS
setTotalCount(totalCount); 42f\]R,
setItems(items); TO&^%d
setStartIndex(0); |F4)&xN\
} !_q=r[D\
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public PaginationSupport(List items, int }0[<xo>K
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totalCount, int startIndex){ j];#=+
setPageSize(PAGESIZE); (fYYcpd,k
setTotalCount(totalCount); q*K[?
setItems(items); ,\-4X
setStartIndex(startIndex); 18^K!:Of
} dUQ)&Hv
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public PaginationSupport(List items, int CZ!gu Y=
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totalCount, int pageSize, int startIndex){ U#x`u|L&6
setPageSize(pageSize); Cp?6vu|RA
setTotalCount(totalCount); (M?VB*sm0
setItems(items); x"7PnN|~
setStartIndex(startIndex); t*`G@Nj
} $0cE iq?Hf
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publicList getItems(){ [F!h&M0z
return items; !gL1
} 4~AY:
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publicvoid setItems(List items){ bw)E;1zo
this.items = items; Qe0?n
} [x%8l,O
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publicint getPageSize(){ 610u!_-
return pageSize; l*Q OM
} BI<(]`FP;s
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publicvoid setPageSize(int pageSize){ (tF/2cZk
this.pageSize = pageSize; % EYh*g{G
} 2J Wp5
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publicint getTotalCount(){ /g1;`F(MS/
return totalCount; I-Q(kWc
} L<G6)'5W
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publicvoid setTotalCount(int totalCount){ t]{, 7.S
if(totalCount > 0){ *&5./WEOH
this.totalCount = totalCount; uG+eF
int count = totalCount / 1wE`kbC<
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pageSize; &Z}}9dd
if(totalCount % pageSize > 0) pf#R]
count++; @7t*X-P.;-
indexes = newint[count]; 4<- E0
for(int i = 0; i < count; i++){ l}FA&c"
indexes = pageSize * W6)XMl}n
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} P@<K&S+f
}else{ " ;o,D
this.totalCount = 0; ; m:I
} PWV+M@
} iA4VT,
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publicint[] getIndexes(){ +3pfBE|
return indexes; MnQ 6 !1Z
} ]>0$l _V
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publicvoid setIndexes(int[] indexes){ ;p"#ZS7
this.indexes = indexes; <^+&A7Q-_
} VoyRB2t
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publicint getStartIndex(){ Q@TeU#2Y
return startIndex; z-|d/#h
} 2{G7ignv
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publicvoid setStartIndex(int startIndex){ 4)9Pgp:
if(totalCount <= 0) {!t6&
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this.startIndex = 0; L(/wsw~y*
elseif(startIndex >= totalCount) [3]h(D
this.startIndex = indexes (#Xgfb"S3
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[indexes.length - 1]; ?' $}k
elseif(startIndex < 0) Ut(BQM>U+$
this.startIndex = 0; b:&=W>r
else{ >BjZ{7?Ok
this.startIndex = indexes |vj!,b88n#
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[startIndex / pageSize]; I^O`#SA (
} ^izf&W.j!
} ?`B6I!S0[
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publicint getNextIndex(){ %G jjl*`E
int nextIndex = getStartIndex() + ks8x xY
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pageSize; 7D4I>N'T
if(nextIndex >= totalCount) U6M&7l8
return getStartIndex(); r+nhm"9
else s=XqI@
return nextIndex; Ucj>gc=
} ibgF,N
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publicint getPreviousIndex(){ "'c
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int previousIndex = getStartIndex() - sv*xO7D.
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pageSize; rgu7g
if(previousIndex < 0) M,eq-MEK
return0; s`L>mRw`
else Byns6k
return previousIndex; p{JE@TM
} 3UGdXufw
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} 1c $iW>0K
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抽象业务类 9riKSp:5
java代码: ="[6Z$R
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/** !xD_=O
* Created on 2005-7-12 28o!>*
*/ SVT'fPm1M
package com.javaeye.common.business; }/z\%Y
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import java.io.Serializable; {qBbzBG
import java.util.List; o(5
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import org.hibernate.Criteria; 7A>glZ/x
import org.hibernate.HibernateException; _+nlm5
import org.hibernate.Session; UyOoyyd.
import org.hibernate.criterion.DetachedCriteria; $@L}/MO
import org.hibernate.criterion.Projections; YRP$tz+
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import gx6$:j;
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org.springframework.orm.hibernate3.HibernateCallback; f@J-6uQ7w
import +tFl
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org.springframework.orm.hibernate3.support.HibernateDaoS ,:/3'L
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upport; 2d-C}&}L\
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import com.javaeye.common.util.PaginationSupport; 4+r26S,T
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public abstract class AbstractManager extends GwZ(3
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HibernateDaoSupport { zI3Bb?4.
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privateboolean cacheQueries = false; jiAN8t*P
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privateString queryCacheRegion; Uzd\#edxJ
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publicvoid setCacheQueries(boolean v"smmQZik
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cacheQueries){ 97(*-e= e
this.cacheQueries = cacheQueries;
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} T=->~@5
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publicvoid setQueryCacheRegion(String eI*o9k$Qs
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queryCacheRegion){ Zae$M0)
this.queryCacheRegion = 2M+'9+k~
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queryCacheRegion; E:ocx2dp
} )k|_ CW~
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publicvoid save(finalObject entity){ 8_F 5c@7
getHibernateTemplate().save(entity); 69u"/7X
} #Y9~ Xp^.
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publicvoid persist(finalObject entity){ :*/`"M)'
getHibernateTemplate().save(entity); Ta3qEV s
} S-k:+ 4
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publicvoid update(finalObject entity){ X,h"%S<c#H
getHibernateTemplate().update(entity); 2hI|]p
} *_7%n-k
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publicvoid delete(finalObject entity){ 8z
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getHibernateTemplate().delete(entity); rik0F
} G\ht)7SGgf
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publicObject load(finalClass entity, Sq,x57-
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finalSerializable id){ &I$MV5)u
return getHibernateTemplate().load Q4,!N(>D
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(entity, id); 3@/\j^U
} h+7THMI
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publicObject get(finalClass entity, zn'F9rWx>
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finalSerializable id){ 5J4'\M
return getHibernateTemplate().get A7qKY-4B
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(entity, id); i#Y[I"'
} VgO:`bDF
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publicList findAll(finalClass entity){ ?@i_\<A2
return getHibernateTemplate().find("from ]FNqNZ
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" + entity.getName()); 5dE@ePO[/9
} 2\p8U#""
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publicList findByNamedQuery(finalString O+^l>+ZGj?
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namedQuery){ \' gb{JO
return getHibernateTemplate V94eUmx>?+
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().findByNamedQuery(namedQuery); kgV_*0^
} eJJD'Z
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publicList findByNamedQuery(finalString query, _Fz]QxO
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finalObject parameter){ 1]i{b/ 4
return getHibernateTemplate O:Ixy?b;Z
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().findByNamedQuery(query, parameter); `"/s," c:D
} *+ql{\am4N
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publicList findByNamedQuery(finalString query, uoM;p'
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finalObject[] parameters){ 1webk;IM
return getHibernateTemplate ST#MCh-00
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().findByNamedQuery(query, parameters); 0 xUw}T6
} O#g'4 S
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publicList find(finalString query){ TM1isZ
return getHibernateTemplate().find msyC."j0jU
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(query); 1'[RrJ$Q
} 0'IV"eH2
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publicList find(finalString query, finalObject a9ko3L
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parameter){ bV5 {
return getHibernateTemplate().find Cz%tk}2
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(query, parameter); H<|ilL'fX
} kf8-#Q/B
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public PaginationSupport findPageByCriteria R; wq
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(final DetachedCriteria detachedCriteria){ pu:Ie#xTDf
return findPageByCriteria (|<e4HfZL
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); '
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} 6 K+DgNK
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public PaginationSupport findPageByCriteria H6Mqy}4W
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(final DetachedCriteria detachedCriteria, finalint Li jisE
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startIndex){ mIK-a{?G
return findPageByCriteria TzC'xWO
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(detachedCriteria, PaginationSupport.PAGESIZE, QUPZe~G>L
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startIndex); {{G`0i2KV
} B^;P:S<yG
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public PaginationSupport findPageByCriteria eDh]uKg
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(final DetachedCriteria detachedCriteria, finalint Tq\S-K}4!
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pageSize, 9w^lRbn
finalint startIndex){ bjQp6!TsZ
return(PaginationSupport) u?(@hUV.
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getHibernateTemplate().execute(new HibernateCallback(){ \{Qd
publicObject doInHibernate Kw`{B3"
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(Session session)throws HibernateException { t<)Cbple\
Criteria criteria = $>PXX32
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detachedCriteria.getExecutableCriteria(session); #JmVq-)
int totalCount = 9Q~9C9{+
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((Integer) criteria.setProjection(Projections.rowCount >UUcKq1M:
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()).uniqueResult()).intValue(); Z*+0gJ<Y
criteria.setProjection i`m&X6)\j
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(null); JHxy_<p/
List items = /s@t-gTi
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criteria.setFirstResult(startIndex).setMaxResults rBOxI
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(pageSize).list(); g[oa'.*OB
PaginationSupport ps = ~AVn$];{
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new PaginationSupport(items, totalCount, pageSize, <G9HVMiP
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startIndex); :y/1Jf'2f
return ps;
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} WpPm|h
}, true); Mnu8d:$
} pyvH [
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public List findAllByCriteria(final
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DetachedCriteria detachedCriteria){ I~^t\iujs
return(List) getHibernateTemplate nx
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().execute(new HibernateCallback(){ <EhOIN7@*D
publicObject doInHibernate v r=va5
ans(^Up$
(Session session)throws HibernateException { *oby(D"p
Criteria criteria = {8TLL@T4
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detachedCriteria.getExecutableCriteria(session); 7U9*-9
return criteria.list(); S:bYeD4
} |/qwR~
}, true); ?z
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} `fnU p-
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public int getCountByCriteria(final X#ZQpo'h
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DetachedCriteria detachedCriteria){ J!{t/_aw
Integer count = (Integer) eD|p1+76
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getHibernateTemplate().execute(new HibernateCallback(){ ,4Q1[K35B
publicObject doInHibernate 3WVH8S b
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(Session session)throws HibernateException { fH@P&SX