Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 062,L~&E
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 l+3[ KCE
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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 E^Y#&skXp3
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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 5VRYO"D:
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分页支持类: #w;v0&p
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java代码: z_g~
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package com.javaeye.common.util; PEN\-*Pv
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import java.util.List; }L
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publicclass PaginationSupport { jnd[6v=C7-
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publicfinalstaticint PAGESIZE = 30; hS_6
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privateint pageSize = PAGESIZE; :Y-{Kn6`_
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privateList items; WJ)z6m]
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privateint totalCount; ,/[6e\0~
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privateint[] indexes = newint[0]; QS0:@.}$E)
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privateint startIndex = 0; l|xZk4@_uE
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public PaginationSupport(List items, int 0WT{,/>
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totalCount){ INUG*JC6
setPageSize(PAGESIZE); Fd#?\r.
setTotalCount(totalCount); "ZHW2l Mf
setItems(items); |]QqXE-7
setStartIndex(0); d#6`&MR
} FE" y\2}
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public PaginationSupport(List items, int `J]fcE%T0R
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totalCount, int startIndex){ %R1 tJ( /
setPageSize(PAGESIZE); U QE qX
setTotalCount(totalCount); *Kyw^DI
setItems(items); Rfn9s(m
setStartIndex(startIndex); Xm+8
} ##KBifU"
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public PaginationSupport(List items, int OQ8 bI=?[x
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totalCount, int pageSize, int startIndex){ g wz7krUTe
setPageSize(pageSize); "nm FzN
setTotalCount(totalCount); Mmj;'iYOwF
setItems(items); 3VuW#m#j
setStartIndex(startIndex); xAafm<L@!
} }YjX3|8zL=
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publicList getItems(){ $=5=NuX
return items; nM\eDNK
} )Y]{HQd
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publicvoid setItems(List items){ $k0kk
this.items = items; "+\ lws
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publicint getPageSize(){ <F'X<Bau
return pageSize; D,;\o7V
} J~B<7O<?!1
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publicvoid setPageSize(int pageSize){ R-NS,i={
this.pageSize = pageSize; ,QC{3i~
} T(AVlI6
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publicint getTotalCount(){ Qd=^S^}(
return totalCount; %ThyOl@O
} YhbZ'SJ
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publicvoid setTotalCount(int totalCount){ wUiys/OVM
if(totalCount > 0){ ET _W-
this.totalCount = totalCount; 4&xZ]QC)O5
int count = totalCount / 1^_U;O:I
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pageSize; jx.[#6e
if(totalCount % pageSize > 0) 8%%f%y
count++; b8$gx:aJ>$
indexes = newint[count]; @o#!EfZyE
for(int i = 0; i < count; i++){ RletL)
indexes = pageSize * /EibEd\
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} c~{9a_G
}else{ .Q@S #d
this.totalCount = 0; #O$
} /CuXa%Ci^
} t<T[h2Wd
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publicint[] getIndexes(){ Dq36p${\W
return indexes; %{(x3\ *&
} psnTFe
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publicvoid setIndexes(int[] indexes){ 89n:)|rWq
this.indexes = indexes; .!1S[
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publicint getStartIndex(){ rj6tZJZ#o0
return startIndex; %9k!A]KD
} V[}4L|ad
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publicvoid setStartIndex(int startIndex){ #6AFdNy
if(totalCount <= 0) {r>.G7P6
this.startIndex = 0;
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elseif(startIndex >= totalCount) UA4J>1 i
this.startIndex = indexes )I^2k4Cg"
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[indexes.length - 1]; t6,wjN-J
elseif(startIndex < 0) rC.eyq,105
this.startIndex = 0; 4Ue_Y'LmM
else{ N[<H7_/3
this.startIndex = indexes uKz,SqX
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[startIndex / pageSize]; ?gO8kPg/D
} Kx.X 7R
} UK$ms~H
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publicint getNextIndex(){ 6*qL[m.F[o
int nextIndex = getStartIndex() + =/u%c!
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pageSize; p}|.ZkyN
if(nextIndex >= totalCount) -DN8Yb
return getStartIndex(); h)6GaJ=
else }R)=S_j
return nextIndex; bae\Zk%`^
} 1=|7mehL%
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publicint getPreviousIndex(){ A%Xt|=^_
int previousIndex = getStartIndex() - zF@o2<cD@
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pageSize; +vNZW@_$D
if(previousIndex < 0) 9prU+9
return0; QDTBWM%
else KJ?y@Q
return previousIndex; 'DCFezdf3
} FYb34LY
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} }m/RZP~=
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抽象业务类 -UZ@G~K
java代码: \eGKkSy
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/** O1D6^3w
* Created on 2005-7-12 >S1)YKgz
*/ !@I}mQ ~
package com.javaeye.common.business; ygSL
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import java.io.Serializable; - ZW3
import java.util.List; li]
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import org.hibernate.Criteria; oyk>vIZ
import org.hibernate.HibernateException; wNNB;n`l
import org.hibernate.Session; 1^dJg8
import org.hibernate.criterion.DetachedCriteria; b?Pj< tA
import org.hibernate.criterion.Projections; %d m-?`
import Eq^uKi
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org.springframework.orm.hibernate3.HibernateCallback; D-IR!js ]
import mPPk)qy
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org.springframework.orm.hibernate3.support.HibernateDaoS F_ 7H!F
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upport; ]h!`IX
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import com.javaeye.common.util.PaginationSupport; ?$z.K>S5
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public abstract class AbstractManager extends ~u&|G$1!0
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HibernateDaoSupport { `Zz uo16
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privateboolean cacheQueries = false; u/Fj'*M
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privateString queryCacheRegion; i3mAfDF
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publicvoid setCacheQueries(boolean rS*$rQCr=
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cacheQueries){ MS<SAD>w
this.cacheQueries = cacheQueries; )F pJ1
} {13!vS%5
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publicvoid setQueryCacheRegion(String x.$1<w64t
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queryCacheRegion){ jU=<r
this.queryCacheRegion = kII7z;<^`
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queryCacheRegion; 4B-yTyO
} V/"}ku
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publicvoid save(finalObject entity){ )%Y
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getHibernateTemplate().save(entity); y/_wx(2
} .tF|YP==
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publicvoid persist(finalObject entity){ Y/U{Qc\6
getHibernateTemplate().save(entity); */ OI*{Q
} lQ*eH10H
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publicvoid update(finalObject entity){ tSv0" L
getHibernateTemplate().update(entity); S7n"3.k
} SFjU0*B$
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publicvoid delete(finalObject entity){ ;?IT)sNY
getHibernateTemplate().delete(entity); b>cafu
} w@]jpH;WX
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publicObject load(finalClass entity, oEzDMImJ5
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finalSerializable id){ Q!CO0w
return getHibernateTemplate().load [{F%LRCo-
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(entity, id); "D> ]ES%5
} 8?jxDW
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publicObject get(finalClass entity, 6w#nkF
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finalSerializable id){ izt^Wi|
return getHibernateTemplate().get /jrY%C
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(entity, id); &?a.mh/8[[
} w@N{@tG
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publicList findAll(finalClass entity){ 0#|7U_n
return getHibernateTemplate().find("from ^!>.97*
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" + entity.getName()); lL2-.!]R
} [V< 1_zqt
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publicList findByNamedQuery(finalString H2\1gNL
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namedQuery){ G:Hj;&'2
return getHibernateTemplate +Hy4s[_|
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().findByNamedQuery(namedQuery); wr@GN8e`
} Pe,;MP\2
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publicList findByNamedQuery(finalString query, ku3D?D:V
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finalObject parameter){ iwz`
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return getHibernateTemplate 8*k oxS
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().findByNamedQuery(query, parameter); _[$#
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} j7sU0"7^
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publicList findByNamedQuery(finalString query, O|(o8VS
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finalObject[] parameters){ 8dV=1O$/
return getHibernateTemplate 1nXqi)&?;
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().findByNamedQuery(query, parameters); B?TpBd
} vcOsq#UW
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publicList find(finalString query){ {3SdX
return getHibernateTemplate().find ):}Fu
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(query); F(G<*lA
} T:@7S
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publicList find(finalString query, finalObject 45r|1<R o
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parameter){ z qO$
return getHibernateTemplate().find u
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(query, parameter); g(aNyn
} XL?Aw
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public PaginationSupport findPageByCriteria N7+#9S 5fv
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(final DetachedCriteria detachedCriteria){ -Cml0}.O
return findPageByCriteria H&u4v2
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); SDJ;*s-
} ^h"n03VFA
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public PaginationSupport findPageByCriteria &KOO&,
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(final DetachedCriteria detachedCriteria, finalint Bd.Z+#%l"
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startIndex){ rt,0j/o.1
return findPageByCriteria o9~h%&
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