Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 +~5Lo'^
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 XJ7B?Zg
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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 @K"$M>n$Z
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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 MT{1/A;`)
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分页支持类: Xe4
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java代码: @1j*\gYz
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package com.javaeye.common.util; 6nA9r5Ghv
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import java.util.List; |;J`~H"K
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publicclass PaginationSupport { xhALJfv
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publicfinalstaticint PAGESIZE = 30; / :$WOQ
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privateint pageSize = PAGESIZE; `C4(C4u
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privateList items; D?BegF
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privateint totalCount; N!7?D'y
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privateint[] indexes = newint[0]; UK6x]tE
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privateint startIndex = 0; =o~mZ/ 7=M
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public PaginationSupport(List items, int \6AM?}v
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totalCount){ GYtgw9 "Y
setPageSize(PAGESIZE); $JOtUB{
setTotalCount(totalCount);
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setItems(items); 2 6}3
setStartIndex(0); I`+,I`~u
} |QZ
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public PaginationSupport(List items, int (e;/Smol
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totalCount, int startIndex){ (0@b4}Z
setPageSize(PAGESIZE); 8i^
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setTotalCount(totalCount); 9y[U\[H
setItems(items); 3K||(
setStartIndex(startIndex); y ~-v0/
} id,' + <
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public PaginationSupport(List items, int 8@doKOA~T
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totalCount, int pageSize, int startIndex){ pSAtn
setPageSize(pageSize); Ze/\IBd
setTotalCount(totalCount); \>9^(N
setItems(items); Z molL0y
setStartIndex(startIndex); y<HNAGj
} {ZdF6~+H(!
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publicList getItems(){ "1\GU1x
return items; 3zmbx~| =\
} (:]+IjnE
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publicvoid setItems(List items){ o;
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this.items = items; iW2\;}y
} \HrtPm`e
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publicint getPageSize(){ "Uf1;;b
return pageSize; ePq (.o
} *qYw
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publicvoid setPageSize(int pageSize){ 0$b4\.0>~
this.pageSize = pageSize; YvuE:ia
} MGK?FJn_?
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publicint getTotalCount(){ Z0v?3v}9^
return totalCount; 4o";p}[b
} x|AND]^Q
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publicvoid setTotalCount(int totalCount){ R'vNJDFY
if(totalCount > 0){ bLGC
this.totalCount = totalCount; G{,DoCM5WL
int count = totalCount / +84
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pageSize; Gj%q:[r
if(totalCount % pageSize > 0) Qc!3y>Y=_
count++; h-O;5.m-P
indexes = newint[count]; ai?N!RX%H
for(int i = 0; i < count; i++){ D
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indexes = pageSize * BHU$QX
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} ]
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}else{ ,uNJz -B8
this.totalCount = 0; m]}U!XT
} IsJx5GO
} G,B4=[Y
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publicint[] getIndexes(){ oD9L5c)
return indexes; 01&E.A
} 4W49*Je
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publicvoid setIndexes(int[] indexes){ NOkgG0Z
this.indexes = indexes; 1tI=Dwx
} ]auqf
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publicint getStartIndex(){ %I!2dXNFRF
return startIndex; @x743}Y\
} {J/Fp#
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publicvoid setStartIndex(int startIndex){ 1ZRkVHiz0
if(totalCount <= 0) Z^'\()3t
this.startIndex = 0; }a9G,@:k
elseif(startIndex >= totalCount) djw\%00
this.startIndex = indexes HOCj* O4
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[indexes.length - 1]; wsH _pF
elseif(startIndex < 0) U1lqg?KO
this.startIndex = 0; y:Of~
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else{ z5~W
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this.startIndex = indexes fn5-Tnsq*
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[startIndex / pageSize]; >nih:5J,ja
} "8cI]~V
} d}ycC.h4k
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publicint getNextIndex(){ xh9$ZavB*
int nextIndex = getStartIndex() + U-m MKRV
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pageSize; ^->S7[N?
if(nextIndex >= totalCount) BbCO K
return getStartIndex(); MpZ\j
else k1zK3I&c_
return nextIndex; Sx e6&
}
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publicint getPreviousIndex(){ Myiv#rQ)
int previousIndex = getStartIndex() - yrfV&C%=n
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pageSize; nQ_{IO8/6W
if(previousIndex < 0) 650qG$
return0; /"u37f?[^
else {$yju _[
return previousIndex; 09G47YkSy1
} fCJjFL:
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} 25{_x3t^
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抽象业务类 \y=oZk4
java代码: * zyik[o
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/** =uAy/S
* Created on 2005-7-12 x4H#8ZK!
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package com.javaeye.common.business; ';/J-l/SE
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import java.io.Serializable; 1H/I-
import java.util.List; !+^'Ej)z
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import org.hibernate.Criteria; oYStf5
import org.hibernate.HibernateException; xV5UaD<
import org.hibernate.Session; Ws@'2i\;
import org.hibernate.criterion.DetachedCriteria; &.*UVc2+Y
import org.hibernate.criterion.Projections; e:9EP,
import #T^2=7 w
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org.springframework.orm.hibernate3.HibernateCallback; Q]xkDr?
import CG=c@-"n/
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org.springframework.orm.hibernate3.support.HibernateDaoS cA
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upport; ob{'Z]-V
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import com.javaeye.common.util.PaginationSupport; Lau@HYW0
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public abstract class AbstractManager extends x [FLV8`b|
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HibernateDaoSupport { p?rlx#M
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privateboolean cacheQueries = false; 1jl!VU6
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privateString queryCacheRegion; ,JV0ib,
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publicvoid setCacheQueries(boolean ;[sW\Ou
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cacheQueries){ Bvn3:+(47
this.cacheQueries = cacheQueries; d]l8ei@>h
} @0?!bua_|
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publicvoid setQueryCacheRegion(String H,!xTy"Wh
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queryCacheRegion){ @Iv;y*y
this.queryCacheRegion = A IP~A]T
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queryCacheRegion; ~f1g"
} R2~Tr$:
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publicvoid save(finalObject entity){ '-;[8:y.
getHibernateTemplate().save(entity); _>;Wz7
} L_8zZ8 o
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publicvoid persist(finalObject entity){ N4!`iS Y
getHibernateTemplate().save(entity); C9n%!()>
} Wy}I"q[~So
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publicvoid update(finalObject entity){ Sjpx G@k
getHibernateTemplate().update(entity); >gk_klLh
} S\k <
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publicvoid delete(finalObject entity){ !_<6}:ZB
getHibernateTemplate().delete(entity); ff"wg\O4
} B`5<sW
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publicObject load(finalClass entity, T~TP
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finalSerializable id){ >qjV{M
return getHibernateTemplate().load 6o3
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(entity, id); <B"sp r&1
} >:;dNVz
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publicObject get(finalClass entity, kI\m0];KnQ
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finalSerializable id){ "/#JC}]
return getHibernateTemplate().get @
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(entity, id); w2)Ro:G
} Hd|l6/[xz
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publicList findAll(finalClass entity){ H"Pb)t
return getHibernateTemplate().find("from (L_-!=e
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" + entity.getName()); [|u^:&az
} ])x1MmRg\
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publicList findByNamedQuery(finalString z3fv}_\z
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namedQuery){ N0U/u'J!g
return getHibernateTemplate ,b+NhxdZ
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().findByNamedQuery(namedQuery); !XA3G`}p6s
} <P9fNBGa
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publicList findByNamedQuery(finalString query, !,J#
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finalObject parameter){ KWwtL"3
return getHibernateTemplate $|4C]Me (
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().findByNamedQuery(query, parameter); @u3`lhUcT
} +Qs]8*^?;
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publicList findByNamedQuery(finalString query, |Td+,>,
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finalObject[] parameters){ 0MQ= Rt
return getHibernateTemplate )fH
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().findByNamedQuery(query, parameters); w7nt $L5
} <J[le=
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publicList find(finalString query){ Ur j*V0^
return getHibernateTemplate().find ^}3^|jF
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(query); e4X
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} l=^A41L_
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publicList find(finalString query, finalObject ;'!x
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parameter){ l,wlxh$}(
return getHibernateTemplate().find c=\tf~}^Ms
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(query, parameter); Jx*cq;`Vee
} B|(g?
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public PaginationSupport findPageByCriteria J )1
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(final DetachedCriteria detachedCriteria){ 337.' |ZE
return findPageByCriteria k(Yz2
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); PSrx!
} n
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public PaginationSupport findPageByCriteria M,Gy.ivz
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(final DetachedCriteria detachedCriteria, finalint ~z[`G#dU
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startIndex){ BU
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return findPageByCriteria =4ygbk
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(detachedCriteria, PaginationSupport.PAGESIZE, uLms0r\@!
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startIndex); Jcw^Z,
} U }2@
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public PaginationSupport findPageByCriteria B`pBIUu
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(final DetachedCriteria detachedCriteria, finalint T/$gnn
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pageSize, iUKjCq02
finalint startIndex){ T2{e1 =Z7
return(PaginationSupport) UBo0c?,4
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]
getHibernateTemplate().execute(new HibernateCallback(){ ]aN9mT
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publicObject doInHibernate AXw qN:P}
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(Session session)throws HibernateException { 7o4E_ .*
Criteria criteria = yoE-a
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detachedCriteria.getExecutableCriteria(session); "2e3 <:$
int totalCount = #1YMpL
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((Integer) criteria.setProjection(Projections.rowCount KFM[caKeJO
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()).uniqueResult()).intValue(); *0U#Z]t
criteria.setProjection Quth5
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(null); ]4rmQAS7"
List items = 92-Xz6Bo9
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criteria.setFirstResult(startIndex).setMaxResults U$:^^Zt`B
kH g|!
(pageSize).list(); L5hF-Ek!
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PaginationSupport ps = AArLNXzVW
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new PaginationSupport(items, totalCount, pageSize, H )X[%+
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startIndex); NT6jwK.?)?
return ps; lw=kTYbq
} Gm+D1l i
}, true); @= <{_p
} W83d$4\d
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public List findAllByCriteria(final V``|<`!gd
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DetachedCriteria detachedCriteria){ :GvC#2p
return(List) getHibernateTemplate COi15( G2
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().execute(new HibernateCallback(){ j)ic7b
publicObject doInHibernate cfmwz~S6i
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(Session session)throws HibernateException { 4Q+ ,_iP
Criteria criteria = (4Db%Iw
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detachedCriteria.getExecutableCriteria(session); CW`^fI9H
return criteria.list(); 51:5rN(_
} 1D%P;eUDp
}, true); lG6&uMvo
} jS,Pu%fR
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public int getCountByCriteria(final >$kFYb>~q
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DetachedCriteria detachedCriteria){ 7IZ(3B<87t
Integer count = (Integer) |)IN20
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getHibernateTemplate().execute(new HibernateCallback(){ P[ KJuc
publicObject doInHibernate e[n T'e
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(Session session)throws HibernateException { P67r+P,
Criteria criteria = Khw!+!(H
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detachedCriteria.getExecutableCriteria(session); '(u [
return .f&,~$e4
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criteria.setProjection(Projections.rowCount Vv=d*
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()).uniqueResult(); JYKA@sZHe
} kS?!"zk>
}, true); m=NX;t
return count.intValue(); +\.gd L)
} ~"}-cl,
} uu=e~K
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