Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 4wEpyQ|L
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 J7aK3he
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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 >ehWjL`8
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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 ,,-[P*@
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分页支持类: jgfP|oD
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java代码: c#-97"_8
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package com.javaeye.common.util; ;<ma K*f\S
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import java.util.List; 6}FDLBA
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publicclass PaginationSupport { WT? U~.U
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publicfinalstaticint PAGESIZE = 30; ;{C{V{
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privateint pageSize = PAGESIZE; ^+l\YB7pD
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privateList items; .L|ax).D
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privateint totalCount; .BB:7+
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privateint[] indexes = newint[0]; KO;6 1y:
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privateint startIndex = 0; J^a"1|
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public PaginationSupport(List items, int JF\viMfR
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totalCount){ "$V2 $
setPageSize(PAGESIZE); )CTM
setTotalCount(totalCount); 1EPOYvf%U
setItems(items); %hb5C 4q
setStartIndex(0); ti2_kYq
} G&H"8REm
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public PaginationSupport(List items, int +B|X
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totalCount, int startIndex){ lH>XIEj
setPageSize(PAGESIZE); odn`%ok
setTotalCount(totalCount); bbkI}d%(Ng
setItems(items); 0>MI*fnY"
setStartIndex(startIndex); @O @yJ{(I
} .*7UT~o=CS
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public PaginationSupport(List items, int O;sQPG,v
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totalCount, int pageSize, int startIndex){ \8aF(Y^H
setPageSize(pageSize); `\0a5UFR
setTotalCount(totalCount); 6x{IY
setItems(items); mcG$V0D <{
setStartIndex(startIndex); gI3rF=
} I*2rS_i[T
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publicList getItems(){ 0.0!5D[
return items; v|2j~
} Rw 8o ]
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publicvoid setItems(List items){ PtOnj)Q
this.items = items; mIo7 K5z{
} ~`H<sJ?9
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publicint getPageSize(){ W10fjMC}^
return pageSize; XCriZ|s
} `aycYoD
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publicvoid setPageSize(int pageSize){ 4]
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this.pageSize = pageSize; IBh~(6
} s+- aHn
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publicint getTotalCount(){ dR:iUw:V
return totalCount; >6+K"J-@
} N@)~j+Pz
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publicvoid setTotalCount(int totalCount){ 0 XzO`*
if(totalCount > 0){ ~\,6C1M
this.totalCount = totalCount; 3)SZVME1Z
int count = totalCount / 2A+,. S_!x
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pageSize; FG:BRS<m~
if(totalCount % pageSize > 0) koZp~W-
count++; v1)6")8o+
indexes = newint[count]; 6QQ oHYtZ
for(int i = 0; i < count; i++){ F\bI6gj
indexes = pageSize * KL]!E ~i
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} t@M] ec
}else{ mM>|fHGA
this.totalCount = 0; &y\2:IyA
} )n@ 3@NV
} IoOnS)
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publicint[] getIndexes(){ ^/vWK\-
return indexes; ]i2\2MTW8
} ?Nql7F4
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publicvoid setIndexes(int[] indexes){ 0EXNq*=EE
this.indexes = indexes; 8Oh3iO
} 3HR]T Q%r
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publicint getStartIndex(){ k|'Mh0G0
return startIndex; ,6\f4/
} l}c2l'
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publicvoid setStartIndex(int startIndex){ \w[%n 0
if(totalCount <= 0) S'p`ECfVMA
this.startIndex = 0; ~la04wR28
elseif(startIndex >= totalCount) |9$'?4F
this.startIndex = indexes )m;qv'=!
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[indexes.length - 1]; N~_jiVD>
elseif(startIndex < 0) u?Mu*r?
this.startIndex = 0; PGl-2Cr
else{ 6 <S&~q
this.startIndex = indexes ^oO5t-9<!
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[startIndex / pageSize]; L b;vrh;A
} +J8/,d
} ,GP4I3D
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publicint getNextIndex(){ lNVAKwW2#
int nextIndex = getStartIndex() + YKOO(?lv
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pageSize; g~:(EO(w
if(nextIndex >= totalCount) \OT)KVwO
return getStartIndex(); 3N0X?* (x|
else f<altz_\q
return nextIndex; B00wcYM<1r
} *oX]=u&
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publicint getPreviousIndex(){ (,c?}TP
int previousIndex = getStartIndex() - 1za'u_
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pageSize; lc?mKW9
if(previousIndex < 0) O| 6\g>ew
return0; q&dRh
else jl-Aos"/
return previousIndex; 3_*Xk.
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} \i;&@Kp.N
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} <kXV1@>
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抽象业务类 y(3c{y@~X
java代码: %3c|
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/** ,rB9esxic
* Created on 2005-7-12 -Xxu/U})%
*/ -Mi}yi
package com.javaeye.common.business; Ce5w0&VlS
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import java.io.Serializable; (4/]dTb
import java.util.List; `f6)Q`n
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import org.hibernate.Criteria; =yTa,PY
import org.hibernate.HibernateException; |j~EV~AJ
import org.hibernate.Session; U.hERe~X
import org.hibernate.criterion.DetachedCriteria; $D/bU lFx
import org.hibernate.criterion.Projections; N;x<| %peL
import xjK_zO*dLq
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org.springframework.orm.hibernate3.HibernateCallback; KM6N'x ^z
import ?bt`fzX{l
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org.springframework.orm.hibernate3.support.HibernateDaoS zD)IU_GWa
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upport; $W/+nmb)@K
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import com.javaeye.common.util.PaginationSupport; 0;FqX*
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public abstract class AbstractManager extends |k`f/*
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HibernateDaoSupport { ]{,Gf2v;;d
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privateboolean cacheQueries = false; wc7mJxJxA
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privateString queryCacheRegion; hgweNRTh!
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publicvoid setCacheQueries(boolean 7b&JX'`Mb
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cacheQueries){ af<NMgT2s~
this.cacheQueries = cacheQueries; j\`EUC
} M&qh]v gC
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publicvoid setQueryCacheRegion(String 0%xR<<gir
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queryCacheRegion){ f0uUbJ5
this.queryCacheRegion =
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queryCacheRegion; U1,~bO9
} V~(EVF{h
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publicvoid save(finalObject entity){ V$/u
getHibernateTemplate().save(entity); 7FmbV/&c
} [3O^0-:6E
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publicvoid persist(finalObject entity){ }P<Qz^sr_
getHibernateTemplate().save(entity); uY^v"cw/F
} PsU9R#HL1
$; Q$W9+
publicvoid update(finalObject entity){ kOs(?=
getHibernateTemplate().update(entity); )Y3EQxXa
} L([E98fo
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publicvoid delete(finalObject entity){ ]g{hhP3>
getHibernateTemplate().delete(entity); .6> hD1'
} Ua):y) A
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publicObject load(finalClass entity, ;~W8v.EW
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finalSerializable id){ G1]"s@8(
return getHibernateTemplate().load 9YR]+*
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(entity, id); *_`76`cz%X
} LmP qLH'(Q
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publicObject get(finalClass entity, IUOxGJ|rO
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finalSerializable id){ 0y)}.'
return getHibernateTemplate().get {vs 4vS6
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(entity, id); $tI]rU
} j5PL{6
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publicList findAll(finalClass entity){ [+;qWfs B
return getHibernateTemplate().find("from K*~]fy
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" + entity.getName()); 1%%'6cWWu
} >*I N
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publicList findByNamedQuery(finalString h;-a`@rO ;
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namedQuery){ 7c-Gm R2
return getHibernateTemplate O`WIkBV!
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().findByNamedQuery(namedQuery); ['z!{Ez
} &uv0G'"\
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publicList findByNamedQuery(finalString query, s2FngAM;f
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finalObject parameter){ XAPYpBgm
return getHibernateTemplate '0:i<`qv#g
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().findByNamedQuery(query, parameter); [*)Z!)
} 5!Bktgk.
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publicList findByNamedQuery(finalString query, M`vyTuO3SO
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finalObject[] parameters){ 1j0 -9Kg'
return getHibernateTemplate q_ %cbAcD
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().findByNamedQuery(query, parameters); SHD^}?-|
} Q/ZkW
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publicList find(finalString query){ ;
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return getHibernateTemplate().find Gs
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(query); Z)pz,
} PmR* }Aw
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publicList find(finalString query, finalObject O oSb>Y/4
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parameter){ wvMW|
return getHibernateTemplate().find K=?VDN
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(query, parameter); S[,8TErz
} [u
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public PaginationSupport findPageByCriteria AW,OHSXh6
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(final DetachedCriteria detachedCriteria){ l&$$w!n0w
return findPageByCriteria 4v'A\~ZU
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); ir16
} ^YvB9XN
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public PaginationSupport findPageByCriteria dQb.BOI)h
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(final DetachedCriteria detachedCriteria, finalint ,xI%A,
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startIndex){ ;AJTytE>%
return findPageByCriteria sC"}8+[)S3
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(detachedCriteria, PaginationSupport.PAGESIZE, Bi3+)k>u7
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startIndex); ^Q+i=y{W
} !xIm2+:(
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public PaginationSupport findPageByCriteria 5 BtX63
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(final DetachedCriteria detachedCriteria, finalint BV`- =wRC
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pageSize, 8}e,%{q
finalint startIndex){ c`*TPqw(B[
return(PaginationSupport) fV:4#j
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getHibernateTemplate().execute(new HibernateCallback(){ p&-'|'![l
publicObject doInHibernate qU6nJi+-I
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(Session session)throws HibernateException { B[4pX
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Criteria criteria = E\nv~Y?SG
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detachedCriteria.getExecutableCriteria(session); <#GB[kQa
int totalCount = BvrB:%_:
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((Integer) criteria.setProjection(Projections.rowCount xVL5'y1g B
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()).uniqueResult()).intValue(); YwY74w:
criteria.setProjection P +"Y
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(null); JO<wK
List items = z7M_1%DEx
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criteria.setFirstResult(startIndex).setMaxResults E{^ XlY
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(pageSize).list(); +
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PaginationSupport ps = oh"O07
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new PaginationSupport(items, totalCount, pageSize, l!}:|N Yh!
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startIndex); 4wd&55=2
return ps; 'bld,Do6
} /&F,V+x
}, true); AcI,N~~
} :l7U>~ o
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public List findAllByCriteria(final mC?i}+4>4R
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DetachedCriteria detachedCriteria){ 8t@p@Td|
return(List) getHibernateTemplate R8rfM?"W
}g# &