Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 (?fU l$q\
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 gSz<K.CT
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 "XR=P>
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 mdWA5p(
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分页支持类: K*SgEkb'l
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java代码: 1f`De`zXzr
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package com.javaeye.common.util; fQJ`&9m*BF
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import java.util.List; s-$Wc)l
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publicclass PaginationSupport { >R+-mP!nj
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publicfinalstaticint PAGESIZE = 30; {^WK#$]
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privateint pageSize = PAGESIZE; 566!T_
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privateList items; hOY@vm&
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privateint totalCount; xB
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privateint[] indexes = newint[0]; fp)SZu_*
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privateint startIndex = 0; HwUaaK
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public PaginationSupport(List items, int E^1yU
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totalCount){ [';o -c"!
setPageSize(PAGESIZE); srVWN:uuH
setTotalCount(totalCount); %Mda<3P
setItems(items); (S~kyU!)0
setStartIndex(0); cx\E40WD
} aZN?V}^+
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public PaginationSupport(List items, int Z hfp>D
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totalCount, int startIndex){ qyz%9 9
setPageSize(PAGESIZE); C/k#gLF`
setTotalCount(totalCount); _:r8UVAT.
setItems(items); ,:?ibE=
setStartIndex(startIndex); J,=K1>8s
} hX.cdt_?
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public PaginationSupport(List items, int .g#}2:3
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totalCount, int pageSize, int startIndex){ OrkcY39"~a
setPageSize(pageSize); WLUgiW(0$
setTotalCount(totalCount); x{1 v(n8+=
setItems(items); q" VmuQ
setStartIndex(startIndex); `<YMkp[
} 7{#p'.nc5
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publicList getItems(){ xV>
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return items; ,U{dqw8E{
} 7X$CJ%6b
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publicvoid setItems(List items){ -H60T,o
this.items = items; )I%M]K]F
} (JbRhcg
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publicint getPageSize(){ 1uo-?k
return pageSize; $<-a>~^Tp
} JI@iT6.%IX
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publicvoid setPageSize(int pageSize){ ToHx!,tDS
this.pageSize = pageSize; B&MDn']fV/
} (Yy#:r;U
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publicint getTotalCount(){ y;az&T
return totalCount; rCo}^M4Pb
} .U{}N%S
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publicvoid setTotalCount(int totalCount){ _N5pxe`
if(totalCount > 0){ #?Ix6 {R
this.totalCount = totalCount; nk!uO^
int count = totalCount / tar/n o
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pageSize; W%rUa&00
if(totalCount % pageSize > 0) %qV:h#
count++; 7^>~k}H
indexes = newint[count]; |21VOPBS
for(int i = 0; i < count; i++){ ftn10TO *
indexes = pageSize * /R|?v{S1
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} B/16EuH#
}else{ ;-JF1p 7;
this.totalCount = 0; s58dHnj5+
} WReHep
} !}}
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publicint[] getIndexes(){ 0=+feB1T
return indexes; PC5$TJnj3
} +/_XSo
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publicvoid setIndexes(int[] indexes){ w!`e!}
this.indexes = indexes; _ow7E\70
} XnYX@p
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publicint getStartIndex(){ B|o@|zF
return startIndex; xm=Gt$>.o
} +L=Xc^
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publicvoid setStartIndex(int startIndex){ a?ete9Q+
if(totalCount <= 0) InL_JobE8r
this.startIndex = 0; Kf?:dF
elseif(startIndex >= totalCount) <0Y<9+g!
this.startIndex = indexes aQHR=.S]X
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[indexes.length - 1]; ga,kKPL
elseif(startIndex < 0) Pc?"H!Hkn
this.startIndex = 0; AP`1hz4].-
else{ CY':'aWfa<
this.startIndex = indexes o;DK]o>kH
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[startIndex / pageSize]; k{{
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} -k:x e:$
} }T PyHq"
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publicint getNextIndex(){ :^paI
int nextIndex = getStartIndex() + G]$EIf'
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pageSize; -cJ,rrN_9
if(nextIndex >= totalCount) YvuE:ia
return getStartIndex(); 7}MnvWP
else Kwm_Y5`A
return nextIndex; X.
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} LN.*gGl
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publicint getPreviousIndex(){ F+NX
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int previousIndex = getStartIndex() - U8gj\G\`
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pageSize; R'vNJDFY
if(previousIndex < 0) R-<8j`[0
return0; eB_r.R{
else +*`kJ)uP
return previousIndex; K;Hgq4
} 1R yE8DdP
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} eU`O=uE
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抽象业务类 Al@. KTK
java代码: 3*\Q]|SI!
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/** BHU$QX
* Created on 2005-7-12 /ece}7M
*/ IG\Cj7{K^
package com.javaeye.common.business; aO(iKlZ$
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import java.io.Serializable; z Fj |E
import java.util.List; q7_Ttjn-DV
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import org.hibernate.Criteria; O&y`:#
import org.hibernate.HibernateException; L^Q;M,.c;
import org.hibernate.Session; `:EhYj.
import org.hibernate.criterion.DetachedCriteria; G,B4=[Y
import org.hibernate.criterion.Projections; ;!=i|"PG
import X@:Y. /
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org.springframework.orm.hibernate3.HibernateCallback; ypGt6t(;
import CCt\[hl
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org.springframework.orm.hibernate3.support.HibernateDaoS j_h:_D4
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upport; ^A=tk!C
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import com.javaeye.common.util.PaginationSupport; ]jiVe_ OS<
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public abstract class AbstractManager extends '/X]96Ci7
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HibernateDaoSupport { _emW#*V
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privateboolean cacheQueries = false; 9;\mq'v%
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privateString queryCacheRegion; =O8>[u;
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publicvoid setCacheQueries(boolean 8HZ+r/j
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cacheQueries){ d:^B2~j
this.cacheQueries = cacheQueries; H[OgnnM
} IoK/ 2Gp
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publicvoid setQueryCacheRegion(String uifVSf*
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queryCacheRegion){ 4$ihnb`DQN
this.queryCacheRegion = v2:i'j6
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queryCacheRegion; ZMiOKVl
} D `V.gV]
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publicvoid save(finalObject entity){ )u=W?5%=}
getHibernateTemplate().save(entity); y5O &9Ckw
} 79d(UG'O
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publicvoid persist(finalObject entity){ Suo$wZ7J
getHibernateTemplate().save(entity); }P{Wk7#Jq
} <Q- m &
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publicvoid update(finalObject entity){ yf8kBT:&S
getHibernateTemplate().update(entity); "8cI]~V
} tk=S4/VWv
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publicvoid delete(finalObject entity){ 7:b.c
getHibernateTemplate().delete(entity); eMFxdtH
} { %]imf|g.
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publicObject load(finalClass entity, U-m MKRV
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finalSerializable id){ =8<~pr-NO
return getHibernateTemplate().load 0jjtx'F
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(entity, id); BbCO K
} woPj>M
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publicObject get(finalClass entity, BL_0@<1X
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finalSerializable id){ > l0H)W
return getHibernateTemplate().get #qDm)zCM
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(entity, id); pPo xx"y
} cgQ6b.
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publicList findAll(finalClass entity){ 66" 6>
return getHibernateTemplate().find("from 8,!Oup
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} vPz7*w
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publicList findByNamedQuery(finalString r-.@MbBm
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namedQuery){ h !R=t
return getHibernateTemplate >X05f#c"v/
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().findByNamedQuery(namedQuery); )=29Hm"
} emnT;kJ>
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publicList findByNamedQuery(finalString query, *tEqu%N1'
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finalObject parameter){ NM![WvtjW
return getHibernateTemplate 9_O4yTL
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().findByNamedQuery(query, parameter); mOn_#2=KF
} g""GQeR
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publicList findByNamedQuery(finalString query, }F _c0zM
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finalObject[] parameters){ 1H/I-
return getHibernateTemplate `a|&aj0
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().findByNamedQuery(query, parameters); ~S\L(B(
} :Q3pP"H,}
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publicList find(finalString query){ y3s+.5;
return getHibernateTemplate().find o5F:U4sG
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(query); VoZ{ I{>|
} @q/g%-WNz
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publicList find(finalString query, finalObject x2#JD|0
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parameter){ CG=c@-"n/
return getHibernateTemplate().find UGhEaKH~R
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(query, parameter); WxGD*%
} =xI'|%
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public PaginationSupport findPageByCriteria GYaP"3Lu
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(final DetachedCriteria detachedCriteria){ <s'de$[
return findPageByCriteria FRrp@hE
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); :-k|jt
} x.?5-3|d$
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public PaginationSupport findPageByCriteria %x$U(I}
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(final DetachedCriteria detachedCriteria, finalint Bvn3:+(47
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startIndex){ yJm"vN
return findPageByCriteria ;hX( /T
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(detachedCriteria, PaginationSupport.PAGESIZE, q!5:M\
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startIndex); Q6@<7E]y
} ;<AcW.jx
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public PaginationSupport findPageByCriteria 4]y)YNQ(
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(final DetachedCriteria detachedCriteria, finalint KQdIG9O+6
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pageSize, ~?Q sr
finalint startIndex){ TC\+>LXiZ
return(PaginationSupport) 9t"Rw ns
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getHibernateTemplate().execute(new HibernateCallback(){ @c3xUK
publicObject doInHibernate &_ekA44E
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(Session session)throws HibernateException { 9 E!le=>
Criteria criteria = Sjpx G@k
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detachedCriteria.getExecutableCriteria(session); G'ykcB._
int totalCount = :gh[BeqQ)
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((Integer) criteria.setProjection(Projections.rowCount |cPHl+$nh.
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()).uniqueResult()).intValue(); uepyH
criteria.setProjection qLN^9PdEE
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(null); |\5^ub,m
List items = 0lfK}
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criteria.setFirstResult(startIndex).setMaxResults vT'Bs;QR
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(pageSize).list(); RK>Pe3<
PaginationSupport ps = K7+yU3
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new PaginationSupport(items, totalCount, pageSize, =l,P'E
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startIndex); 6OES'3 Cy
return ps; 'y8{,R4C
} (q>
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}, true); /0h
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} <j'V}|3
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public List findAllByCriteria(final _FLEz|%~
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DetachedCriteria detachedCriteria){ C_.9qo]DT7
return(List) getHibernateTemplate U@lc1#
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().execute(new HibernateCallback(){ &1xCPKIr
publicObject doInHibernate xvr5$x|h
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(Session session)throws HibernateException { <qCa9@Ea
Criteria criteria = <AHpk5Sn{
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detachedCriteria.getExecutableCriteria(session); W?
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return criteria.list(); s[1ao"sZ^
} lo1Ui`V
}, true); ]rmBM
} sGvbL-S-f:
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public int getCountByCriteria(final S:\i
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DetachedCriteria detachedCriteria){ [M_{~1xX
Integer count = (Integer) h6
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getHibernateTemplate().execute(new HibernateCallback(){ THA9OXP
publicObject doInHibernate hGR j
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(Session session)throws HibernateException { ,g`%+s7 u
Criteria criteria = c}x1-d8
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detachedCriteria.getExecutableCriteria(session); X|M!Nt0'
return E-MPFL
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criteria.setProjection(Projections.rowCount !XA3G`}p6s
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()).uniqueResult(); Tt[zSlIMx
} BG{f)2F\
}, true); 'm%{Rz>j
return count.intValue(); g(DD8;]w<
} <_tmkLeZf
} G4&s_M$
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用户在web层构造查询条件detachedCriteria,和可选的
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