Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ep8UWxB5
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 pLu5x<
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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 N^QxqQ~
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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 :}N heRi
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分页支持类: dQ*^WNUB
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java代码: X+Sqw5rH
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package com.javaeye.common.util; ]a IHd]B
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import java.util.List; JL
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publicclass PaginationSupport { s17)zi,?4
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publicfinalstaticint PAGESIZE = 30; LGc8w>qE
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privateint pageSize = PAGESIZE; ]EK(k7nH
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privateList items; mx)!] B"
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privateint totalCount; Ko&4{}/
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privateint[] indexes = newint[0]; GG%;~4#2
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privateint startIndex = 0; &j~9{ C
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public PaginationSupport(List items, int U`[viH>K
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totalCount){ 8pEA3py
setPageSize(PAGESIZE); `Hw][qy#
setTotalCount(totalCount); G+fo'ThG
setItems(items); [Q:mq=<Z%
setStartIndex(0); =oVC*b
} a(~X
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public PaginationSupport(List items, int 8AW}7.<5
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totalCount, int startIndex){ B.=n U
setPageSize(PAGESIZE); sPc}hG+N
setTotalCount(totalCount); vw>(JCR
setItems(items); ktPM66`b
setStartIndex(startIndex); z4
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} } J?,?>Z
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public PaginationSupport(List items, int g}R#0gkdk}
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totalCount, int pageSize, int startIndex){ 9Tr ceL;
setPageSize(pageSize); Ytc[ kp
setTotalCount(totalCount); 48z%dBmTT*
setItems(items); o6^ETQ
setStartIndex(startIndex); TfJ*G6\7e#
} uhj]le!
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publicList getItems(){ Jqzw94
return items; Y'000#+
} :ek^M (
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publicvoid setItems(List items){ [^GBg>k
this.items = items;
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} sCJ|U6Q-
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publicint getPageSize(){ ,~,q0PA7J
return pageSize; rMVcoO@3
} T-yEn&r4)
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publicvoid setPageSize(int pageSize){ u ]y[g
this.pageSize = pageSize; ^O<'Qp,[:
} ogSDV
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publicint getTotalCount(){ t]Ln(r
return totalCount; 3{.]!
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publicvoid setTotalCount(int totalCount){ MB:[: nX
if(totalCount > 0){ \^0>h`[
this.totalCount = totalCount; sMAj?]hI$
int count = totalCount / Q7e4MKy7
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pageSize; ">!pos`<C
if(totalCount % pageSize > 0) uO]|YF
count++; vn*K\,
indexes = newint[count]; >o13?-S%e
for(int i = 0; i < count; i++){ ELV~
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indexes = pageSize * wZ0bD&B
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} p&$PsgR
}else{ Ohgu*5!o
this.totalCount = 0; oMemF3M
} PSv 5tQhm
} (;=|2N>7
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publicint[] getIndexes(){ IR]5,K^l
return indexes; dh%O {t
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publicvoid setIndexes(int[] indexes){ Z&?4<-@6\p
this.indexes = indexes; l
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publicint getStartIndex(){ o"0~
return startIndex; /2d>nj
} 1P"{TMd?
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publicvoid setStartIndex(int startIndex){ ";`jS&"=
if(totalCount <= 0) .fqy[qrM
this.startIndex = 0; L'a+1O1q&i
elseif(startIndex >= totalCount) oCE'@}s.i
this.startIndex = indexes LUxDP#~7
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[indexes.length - 1]; Rs{8vV
elseif(startIndex < 0) LEjq<t1&
this.startIndex = 0; uWClT):
else{ !4#qaH-Q
this.startIndex = indexes &/Gn!J;1
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} X0+E!~X$zM
} Fab]'#1q4
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publicint getNextIndex(){ 'hWA&Xx+
int nextIndex = getStartIndex() + ` ;mQ"lO
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if(nextIndex >= totalCount) \tvL<U"'
return getStartIndex(); bh5P98s
else ZJcX-Z!\
return nextIndex; (
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} lijTL-3
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publicint getPreviousIndex(){ "CC"J(&a
int previousIndex = getStartIndex() - 8pA<1H%
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if(previousIndex < 0) N;YFr
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else {5
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return previousIndex; @",#'eC"
} tA4Ra,-c
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} :4 z\Q]
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抽象业务类 FXY>o>K%h
java代码: ny+r>>3Td
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/** %U}6(~
* Created on 2005-7-12 jK/FzD0-
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package com.javaeye.common.business; 4yqYs>
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import java.io.Serializable;
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import java.util.List; #r"|%nOfY
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import org.hibernate.Criteria; zOMxg00
import org.hibernate.HibernateException; NBasf
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import org.hibernate.Session; /'.gZo
import org.hibernate.criterion.DetachedCriteria; '?m2|9~
import org.hibernate.criterion.Projections; ipMSMk7gx
import - |DWPU!"
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org.springframework.orm.hibernate3.HibernateCallback; aqk$4IG
import 6~ y'
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org.springframework.orm.hibernate3.support.HibernateDaoS Wk3-J&QbS
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upport; r{d@74
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import com.javaeye.common.util.PaginationSupport; W3Ee3
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public abstract class AbstractManager extends VFF5Tp
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HibernateDaoSupport { TlyBpG=p
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privateboolean cacheQueries = false; \hI?XnL#
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privateString queryCacheRegion; 6J JA"] `
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publicvoid setCacheQueries(boolean
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cacheQueries){ t>%b[(a
this.cacheQueries = cacheQueries; IFr"IOr'l
} mT@Gf>}/A
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publicvoid setQueryCacheRegion(String `EMGrw_
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queryCacheRegion){ =,ax"C?pR
this.queryCacheRegion = u=s,bt,"5
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queryCacheRegion; ;aD~1;q
} 1TA!9cz0Z
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publicvoid save(finalObject entity){ WdS1v%
getHibernateTemplate().save(entity); wTR?8$
} I*o6Bn
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publicvoid persist(finalObject entity){ Jpp-3i.F#
getHibernateTemplate().save(entity); Rvf{u8W
} D2D+S
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publicvoid update(finalObject entity){ c8
getHibernateTemplate().update(entity); &@|? %
} S/pU|zV[
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publicvoid delete(finalObject entity){ euT=]j
getHibernateTemplate().delete(entity); <W3p!
} 7z, $
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publicObject load(finalClass entity, $U7/w?gc'
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finalSerializable id){ gzVZPvTPE
return getHibernateTemplate().load P%yL{
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(entity, id); Oz_CEMcy
} -*w2<DCn
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publicObject get(finalClass entity, ^fd*KM
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finalSerializable id){ O\;Lb[`lb
return getHibernateTemplate().get a(O@E%|u
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(entity, id); H@zv-{}T8
} (ESFR0
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publicList findAll(finalClass entity){ avG#0AY
return getHibernateTemplate().find("from r^"sZk#
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" + entity.getName()); G='`*_$
} `l?MmIJ
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publicList findByNamedQuery(finalString b9i_\
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namedQuery){ BDPE.8s
return getHibernateTemplate h V`?,
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().findByNamedQuery(namedQuery); +N,Fq/x
} B$JPE7h@[P
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publicList findByNamedQuery(finalString query, mqJD+ K
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finalObject parameter){ '#j6ZC/?
return getHibernateTemplate 8aRmHy"9l
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().findByNamedQuery(query, parameter); ^_G#JJ\@$
} &"tQpw5
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publicList findByNamedQuery(finalString query, }*-fh$QJ
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finalObject[] parameters){ GpXf).a@
return getHibernateTemplate r?0w5I
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().findByNamedQuery(query, parameters); &l{ctP%q
} ^56D)A=
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publicList find(finalString query){ V5h_uGOD
return getHibernateTemplate().find ^"/TWl>jB
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(query); ;VCFDE{K=
} F [-D
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publicList find(finalString query, finalObject K|~!oQ
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return getHibernateTemplate().find !m_y@~pV#u
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(query, parameter); 'X&"(M
} F!C<^q~!
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public PaginationSupport findPageByCriteria pG*W>F
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(final DetachedCriteria detachedCriteria){ ,e`n2)
return findPageByCriteria X&49C:jN
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); v)K|{x
} #gf0*:p
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public PaginationSupport findPageByCriteria u,YmCEd_V
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(final DetachedCriteria detachedCriteria, finalint <Z~Nz>'r
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startIndex){ .bh7
return findPageByCriteria UY.o,I>s
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(detachedCriteria, PaginationSupport.PAGESIZE, ?5pZp~
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startIndex); )&)tX.
} 0!:%Ge_
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public PaginationSupport findPageByCriteria 2ss*&BR.
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(final DetachedCriteria detachedCriteria, finalint vf?m6CMU!
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pageSize, r:U<cLT[9
finalint startIndex){ mv*M2NuhT
return(PaginationSupport) Ve"M8-{oKk
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getHibernateTemplate().execute(new HibernateCallback(){ (h@~0S
publicObject doInHibernate *a(GG
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(Session session)throws HibernateException { G&6`?1k
Criteria criteria = /W}"/W9
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detachedCriteria.getExecutableCriteria(session); \Q?#^<