Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 Z~
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 R"v 3!P
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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 (rtY!<|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 WiL2
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分页支持类: _*M42<wcO
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java代码: l\0w;:N3
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package com.javaeye.common.util; /UcV
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import java.util.List; zw<p74DH
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publicclass PaginationSupport { ZFm`UXS
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publicfinalstaticint PAGESIZE = 30; -7H^n#]
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privateint pageSize = PAGESIZE; f_ ^1J
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privateList items; ~+X9g
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privateint totalCount; DB526O*
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privateint[] indexes = newint[0]; 2|iV,uJ&
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privateint startIndex = 0; Yj|eji7y
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public PaginationSupport(List items, int inb^$v
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totalCount){ INs!Ame2
setPageSize(PAGESIZE); e1myH6$W
setTotalCount(totalCount); QS.>0i/7l
setItems(items); R:-JkV>e:
setStartIndex(0); asiov[o;
} fc=Patg
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public PaginationSupport(List items, int .{KjEg 6
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totalCount, int startIndex){ #t8{R~y"gv
setPageSize(PAGESIZE); n%^ LPD
setTotalCount(totalCount); ]Y>h3T~
setItems(items); U6ZR->:
setStartIndex(startIndex); mMx ;yZ
} !rDdd%Z
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public PaginationSupport(List items, int [S]S^ej*8
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totalCount, int pageSize, int startIndex){
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setPageSize(pageSize); s&kQlQ=
setTotalCount(totalCount); 5<pftTcZ
setItems(items); kv,%(en]
setStartIndex(startIndex); hVT~~n`Rj
} Jb)#fH$L
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publicList getItems(){ F;ZSzWq
return items; ,d+fDmm3
} zJDSbsc$%
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publicvoid setItems(List items){ =o}"jVE
this.items = items; nMfFH[I4
} &;,,H< p
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publicint getPageSize(){ m"\:o
return pageSize; `!:q;i]}
} 1% F?B-k
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publicvoid setPageSize(int pageSize){ 7'-Lp@an
this.pageSize = pageSize; Qp"y?S
} 4to% `)]
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publicint getTotalCount(){ -!;l~#K=
return totalCount; /){KOCBl;
} ,oxcq?7#4
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publicvoid setTotalCount(int totalCount){ s5.AW8X=?*
if(totalCount > 0){ (iJ1
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this.totalCount = totalCount; 5J)=} e
int count = totalCount / q+KzIde|%
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pageSize; J`q]6qf#
if(totalCount % pageSize > 0) Q-Ux<#
count++; \l"&A
indexes = newint[count]; ?&LZB}1R
for(int i = 0; i < count; i++){ $WYbm}j
indexes = pageSize * I$NhXZ)KT
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} pL1Q7&&c0
}else{ hmx=
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this.totalCount = 0; 9][(Iu]h7
} qm Tb-~
} YSJy`
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publicint[] getIndexes(){ >&g}7d%
return indexes; '}g*!jL
} +X`V|E,no
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publicvoid setIndexes(int[] indexes){ $@d9<83=
this.indexes = indexes; wiaX&-c]8
} IM$2VlC
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publicint getStartIndex(){ >{eCh$L
return startIndex; nzjkX4KV
} FJ*i\Q/D
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publicvoid setStartIndex(int startIndex){ l$K,#P<)
if(totalCount <= 0) AM"Nn
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this.startIndex = 0; )&era` e[
elseif(startIndex >= totalCount) J$4wL
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this.startIndex = indexes %N;!+
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[indexes.length - 1]; /vY_Y3k#
elseif(startIndex < 0) Zh5RwQNE~
this.startIndex = 0; p~ C.IG
else{ `c/*H29
this.startIndex = indexes Y+4o B
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[startIndex / pageSize]; ;!o]wHmA
} y@j,a
} ) xbO6V
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publicint getNextIndex(){ ]0;864X0
int nextIndex = getStartIndex() + M
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pageSize; $F.([?)k?
if(nextIndex >= totalCount) ELh8ltLY
return getStartIndex(); Xi?b]Z
else pE{yv1Yg
return nextIndex; 2([2Pb3<"
} &U+ _ -Ph
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publicint getPreviousIndex(){ Auy_K?he]
int previousIndex = getStartIndex() - T081G`li
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pageSize; {_(\`>
if(previousIndex < 0) as=m`DqOh
return0; =0@&GOq
else &t5{J53
return previousIndex; !-m&U4Ku6o
} #j@71]GI
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} /8VP[i)u
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抽象业务类 oG$)UTzGc
java代码: ]$U xCu
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/** g}p;\o
* Created on 2005-7-12 V\V)<BARe
*/ iK?b~Q
package com.javaeye.common.business; i,13b
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import java.io.Serializable; &V|>dLT>A
import java.util.List; e4~>G?rM_
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import org.hibernate.Criteria; F}"] 92
import org.hibernate.HibernateException; LqdY Qd51
import org.hibernate.Session; Soie^$
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import org.hibernate.criterion.DetachedCriteria; {0! ~C=P
import org.hibernate.criterion.Projections; bYz&P`o}
import Zo KcJA
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org.springframework.orm.hibernate3.HibernateCallback; @!&}}"<
import *9)SmSs
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org.springframework.orm.hibernate3.support.HibernateDaoS {JV@"t-X3"
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upport; G/%iu;7ZCb
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import com.javaeye.common.util.PaginationSupport; %4\OPw&
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public abstract class AbstractManager extends B\g]({E
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HibernateDaoSupport { kE
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privateboolean cacheQueries = false; " P)*FT
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privateString queryCacheRegion; 8 6f2'o+
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publicvoid setCacheQueries(boolean *&Z7m^`FQ
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cacheQueries){ 9dMrgz&'
this.cacheQueries = cacheQueries; 9 2MTX
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} [FUjnI
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publicvoid setQueryCacheRegion(String T5Dw0Y6u,
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queryCacheRegion){ S osj$9E
this.queryCacheRegion = LQnkcV
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queryCacheRegion; +.y
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} \D>$aLO*?
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publicvoid save(finalObject entity){ T]Nu)
getHibernateTemplate().save(entity); %!ebO*8q
} b|SE<\
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publicvoid persist(finalObject entity){ CIjZG ?A
getHibernateTemplate().save(entity); 'WHHc 9rG,
} 8@NH%zWBp
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publicvoid update(finalObject entity){ E&Qi@Ty
getHibernateTemplate().update(entity); pj?XLiM54%
} t6c<kIQ:-O
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publicvoid delete(finalObject entity){ jkiTj~WE-
getHibernateTemplate().delete(entity); RFh"&0[
} rQTr8DYH
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publicObject load(finalClass entity, \,!QJp4
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finalSerializable id){ Q4t(@0e}
return getHibernateTemplate().load 8 i&_Jgmr
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(entity, id); ]CU]pK?nq
}
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publicObject get(finalClass entity, |}){}or
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finalSerializable id){ s<x1>Q7X~
return getHibernateTemplate().get nS()u}c;r
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(entity, id); zF4 [}*
} ,fEO>
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publicList findAll(finalClass entity){ wOB azWa
return getHibernateTemplate().find("from reo{*)%
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} ~f|Z%&l|
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publicList findByNamedQuery(finalString 1e xl0]-
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namedQuery){ SPj><5Ro
return getHibernateTemplate ,wwZI`>-
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().findByNamedQuery(namedQuery); P)dL?vkK
} Ba\6?K
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publicList findByNamedQuery(finalString query, =O|c-k,f@
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finalObject parameter){ 2?@j~I=s2h
return getHibernateTemplate dBO@6*N4c
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().findByNamedQuery(query, parameter); %tA57Pn>
} U=bEA1*@0
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publicList findByNamedQuery(finalString query, TG
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finalObject[] parameters){ ^4%Zvl
return getHibernateTemplate N__H*yP
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().findByNamedQuery(query, parameters); _Fp>F
} OPpjuIRv
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publicList find(finalString query){ (Lh#`L?x
return getHibernateTemplate().find s!/TU{8J
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(query); ctQbp~-
} DOm[*1@^
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publicList find(finalString query, finalObject }4co)B"
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parameter){ o6"*4P|
return getHibernateTemplate().find +.[\g|G
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(query, parameter); Vbh6HqAHxJ
} `,wu}F85
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public PaginationSupport findPageByCriteria <