Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 zPU&
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 x2.G1
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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 EVMhc"L
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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 S=^yJ6xJ
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分页支持类: iLn)Z0<\o
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java代码: ="RDcf/
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package com.javaeye.common.util; |]~tX zY
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import java.util.List; )JTh=w4n|z
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publicclass PaginationSupport { ^ q @.yL
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publicfinalstaticint PAGESIZE = 30; /] ce?PPC
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privateint pageSize = PAGESIZE; "-kb=fY
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privateList items; ZPn`.Qc
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privateint totalCount; x&tad+T
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privateint[] indexes = newint[0]; v
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privateint startIndex = 0; ePK^v_vBD
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public PaginationSupport(List items, int F'W{\4
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totalCount){ ~;,]/'O
setPageSize(PAGESIZE); Ot(U_rJCi
setTotalCount(totalCount); BV$lMLD{r
setItems(items); gQgG_&xkC
setStartIndex(0); g4P059
} <P ~+H>;
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public PaginationSupport(List items, int Ttb@98
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totalCount, int startIndex){ Ec[=~>;n{l
setPageSize(PAGESIZE); q i}HJkOq
setTotalCount(totalCount); R{5Qb?&wOp
setItems(items); V#^~JJW^
setStartIndex(startIndex); -<sn+-uE:
} *f$mSI=
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public PaginationSupport(List items, int /K:M
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totalCount, int pageSize, int startIndex){ 97e fWYj
setPageSize(pageSize); B%Dy;zdWd/
setTotalCount(totalCount); }]N7CWy
setItems(items); 7qV_QZ!.
setStartIndex(startIndex); bqN({p&
} xIf,1g@Cq9
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publicList getItems(){ j./3 )
return items; $[}31=0
} X{o.mN
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publicvoid setItems(List items){ ~d^+yR-
this.items = items; Zaf] .R
} >5#`j+8=q
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publicint getPageSize(){ NwoBM6 #
return pageSize; ++F #Z(p
} 7m{ 'V`F
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publicvoid setPageSize(int pageSize){ [#$ -kd~
this.pageSize = pageSize; THWT\3~,
} =|bM|8,
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publicint getTotalCount(){ [Pi8gj*
return totalCount; U")~bU
} N?U;G*G
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publicvoid setTotalCount(int totalCount){ D)8&v`LS
if(totalCount > 0){ a9mLPP
this.totalCount = totalCount; I1BVqIt1i
int count = totalCount / *L%HH@] %_
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pageSize; oqB(l[%z2
if(totalCount % pageSize > 0) JGX E{FT
count++; _W/s=pCh
indexes = newint[count]; fySzZ
for(int i = 0; i < count; i++){ hf^,
indexes = pageSize * _-x|g~pV*
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} !
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}else{ J "yO\Y
this.totalCount = 0; >B U0B
} )9 5&-Hs
} {'E%SIRZ)
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publicint[] getIndexes(){ 2HoTj|
return indexes; tm @&f
} L
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publicvoid setIndexes(int[] indexes){ 6C4c.+S
this.indexes = indexes; C$SuFL(pb
} g2JNa?z
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publicint getStartIndex(){ \Pi\c~)Pr
return startIndex; 9Iq [@v
} *r@7 :a5
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publicvoid setStartIndex(int startIndex){ 8s-y+M@.
if(totalCount <= 0) msM
this.startIndex = 0; "6 |j
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elseif(startIndex >= totalCount) d
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this.startIndex = indexes *%7 [{Loz
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[indexes.length - 1]; "}!|V)K
elseif(startIndex < 0) ci0)kxUBF
this.startIndex = 0; !qS~YA
else{ pYa8iQ`6U;
this.startIndex = indexes [^$nt
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[startIndex / pageSize]; Fm_^7|
} u\ro9l
} G|Rsj{2'
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publicint getNextIndex(){ .T
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int nextIndex = getStartIndex() + zsFzF`[k
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pageSize; U(P^-J<n1
if(nextIndex >= totalCount) W@`2+}
return getStartIndex(); {^=T&aCYdS
else "s]r"(MX
return nextIndex; T\I}s"d
} 3)88B"E
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publicint getPreviousIndex(){ !TvNT}4 Z
int previousIndex = getStartIndex() - H )hO/1m
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pageSize; (-Cxv`7
if(previousIndex < 0) nNz1gV:0X
return0;
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else {L~j;p_G&
return previousIndex; +wc8rE6+W
} 7rQwn2XD{
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抽象业务类 6D|[3rXr
java代码: pMB!I9q
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/** vz5x{W
* Created on 2005-7-12 vF@hg)A
*/ Wip@MGtJ
package com.javaeye.common.business; (VDY]Q)
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import java.io.Serializable; NIgqdEu1
import java.util.List; #(swVo:+E
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import org.hibernate.Criteria; [ )3rc}:1
import org.hibernate.HibernateException; /By:S/[1pL
import org.hibernate.Session; |y9(qcKn$
import org.hibernate.criterion.DetachedCriteria; v+Eub;m
import org.hibernate.criterion.Projections; @~ k4,dJ
import ,1/O2aQ%\0
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org.springframework.orm.hibernate3.HibernateCallback; @<kY,ox@~
import LNp{lC
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org.springframework.orm.hibernate3.support.HibernateDaoS GsIVx!
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upport; R !g'zS'
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import com.javaeye.common.util.PaginationSupport; yq. <,b=87
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public abstract class AbstractManager extends 4`yE'%6.}
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HibernateDaoSupport { !Gob `# r
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privateboolean cacheQueries = false; qm^|7m^
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privateString queryCacheRegion; 8;6j
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publicvoid setCacheQueries(boolean P5Lb)9_Jw
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cacheQueries){ "<Ozoo1&w
this.cacheQueries = cacheQueries; L4O.= *P1
} fGZ56eH:
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publicvoid setQueryCacheRegion(String W(pq_H'
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queryCacheRegion){ Z8C~o)n9
this.queryCacheRegion = l266ufO.u-
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queryCacheRegion; .RNY}bbk
} ;w/@_!~
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publicvoid save(finalObject entity){ Tp46K\}Uf
getHibernateTemplate().save(entity); 8Q%g<jX*
} CvhVV"n
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publicvoid persist(finalObject entity){ u9nJ;:
getHibernateTemplate().save(entity); ai%*s&0/Y
} . ;rE4B
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publicvoid update(finalObject entity){ d1P|v(
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getHibernateTemplate().update(entity); Qb%o%z?hee
} (+yH
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publicvoid delete(finalObject entity){ IR2=dQS
getHibernateTemplate().delete(entity); BP4xXdG
} @C-03`JWuK
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publicObject load(finalClass entity, Hr_5N,
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finalSerializable id){ {Qi J-[q
return getHibernateTemplate().load |\zzOfaO
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(entity, id); rJZR8bo
} (>
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publicObject get(finalClass entity, 6Hbu7r*tm
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finalSerializable id){ 3
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return getHibernateTemplate().get M>E~eb/
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(entity, id); X=+|(A,BdY
} w73?E#8
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publicList findAll(finalClass entity){ 6ao~f?JZ
return getHibernateTemplate().find("from aFaioE#h(
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" + entity.getName()); Ul_5"3ze
} #M%K82"
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publicList findByNamedQuery(finalString JM1O7I
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namedQuery){ :8K}e]!c1
return getHibernateTemplate PYBE?td
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().findByNamedQuery(namedQuery); A XhP3B]
} @9eN\b%I^H
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publicList findByNamedQuery(finalString query, zauDwV=
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finalObject parameter){ I8a3: )
return getHibernateTemplate lEgjv,
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().findByNamedQuery(query, parameter); c/Fgx/hr
} ;L,i">_%u[
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publicList findByNamedQuery(finalString query, j7U&a}(
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finalObject[] parameters){ PB
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return getHibernateTemplate []v$QR&u#v
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().findByNamedQuery(query, parameters); =z;]FauR!
} RL:B.Lv/W
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publicList find(finalString query){ $ay!'MK0d
return getHibernateTemplate().find oYdE s&qq
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(query); Lb)rloca
} w3ATsIw
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publicList find(finalString query, finalObject ,-hbwd~M
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parameter){ ; PncJe5x
return getHibernateTemplate().find 9dw*
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(query, parameter); ~o#mX?'7
} NT0n[o^
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public PaginationSupport findPageByCriteria .XqeO@z
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(final DetachedCriteria detachedCriteria){ Pz34a@%"
return findPageByCriteria >+Ig<}p
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); 7O'.KoMw
} Q-<Qm ?
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public PaginationSupport findPageByCriteria 7nNNc[d*=
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(final DetachedCriteria detachedCriteria, finalint e
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startIndex){ F)KR8(
return findPageByCriteria 9Vqy<7i1
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(detachedCriteria, PaginationSupport.PAGESIZE, ^D5Jqh)
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startIndex); 76"4Q!
} r<vy6
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public PaginationSupport findPageByCriteria PxgJ7d
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(final DetachedCriteria detachedCriteria, finalint `vMhrn
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pageSize, ~uH_y-
finalint startIndex){ 04jvrde8-O
return(PaginationSupport) yq49fEgc@U
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getHibernateTemplate().execute(new HibernateCallback(){ 8 eK 8-R$
publicObject doInHibernate $&&E[JY
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(Session session)throws HibernateException { FLs$
Criteria criteria = Gc"hU:m
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detachedCriteria.getExecutableCriteria(session); -&sY