Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 C@eL9R;N1
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 BVNJas
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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 IDT\hTPIs
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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 cZ|*Zpk
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分页支持类: F:T(-,
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java代码: Tp?IK_
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package com.javaeye.common.util; *3`R W<Z
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import java.util.List; #p>&|I
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publicclass PaginationSupport { iYgVSVNg
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publicfinalstaticint PAGESIZE = 30; d{JI]
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privateint pageSize = PAGESIZE; (m:Q'4Ep
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privateList items; \tYImh
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privateint totalCount; H\oxj,+N
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privateint[] indexes = newint[0]; jH9PD8D\
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privateint startIndex = 0; '1LN)Yw
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public PaginationSupport(List items, int ^UJIDg7zS
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totalCount){ Z9$pY=8^?
setPageSize(PAGESIZE); DdI%TU K,
setTotalCount(totalCount); >IrQhSF
setItems(items); 7;q0'_G
setStartIndex(0); 9e
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} aOGoJCt
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public PaginationSupport(List items, int d9:I.SA)E
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totalCount, int startIndex){ #~nXAs]Q
setPageSize(PAGESIZE); y/Y}C.IWp)
setTotalCount(totalCount); \Hrcf +`
setItems(items); YGOkqI
setStartIndex(startIndex); *sU,waX
} >;,23X
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public PaginationSupport(List items, int !7I07~&1
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totalCount, int pageSize, int startIndex){ ]sb?lAxh{
setPageSize(pageSize); 36(qe"s
setTotalCount(totalCount); en'[_43
setItems(items); HJN GO[*g
setStartIndex(startIndex); 1?H;
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} gU+yqT7=
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publicList getItems(){ Xydx87L/-e
return items; j[:70%X
} ]^>Inh!
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publicvoid setItems(List items){ k{;?>=FH!
this.items = items; F]6G<6T[
} 13/,^?
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publicint getPageSize(){ O713'i
return pageSize; 5A`>3w{3n
} ASoBa&vX
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publicvoid setPageSize(int pageSize){ @JhkUGG]p
this.pageSize = pageSize; :j3'+%'2
} n$SL"iezW?
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publicint getTotalCount(){ *(yw6(9%
return totalCount; A]0R?N9wb_
} u3 LoP_|
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publicvoid setTotalCount(int totalCount){ Xk%eU>d
if(totalCount > 0){ N<<wg{QO
this.totalCount = totalCount; >Vq07R
int count = totalCount / F%y#)53g
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pageSize; U~yPQ8jD
if(totalCount % pageSize > 0) C<a&]dN/
count++; &?QKWxN
indexes = newint[count]; IxWi>8
for(int i = 0; i < count; i++){ B]yO
indexes = pageSize * -V2`[k
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} b)Nd}6}<?
}else{ %u9Q`
this.totalCount = 0; <Ffru?o4j
} 3+'vNc
} Bj6%mI42hl
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publicint[] getIndexes(){ "kcix!}&
return indexes; [Y`E"1f2
} lQ^"-zO4
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publicvoid setIndexes(int[] indexes){ ~u0<c:C^
this.indexes = indexes; /<T{g0s
} w]xr
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publicint getStartIndex(){ w$&;s<0
return startIndex; .u&X:jOE
} =[aiW|Y
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publicvoid setStartIndex(int startIndex){ y]R+/
if(totalCount <= 0) PyI"B96gz
this.startIndex = 0; e9'0CH<
elseif(startIndex >= totalCount) g51UIN]o-
this.startIndex = indexes Zp{K_ec{
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[indexes.length - 1]; jpYZ)
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elseif(startIndex < 0) KIY`3Fl09
this.startIndex = 0; N?rE:0SJ
else{ Y#9bM$x7
this.startIndex = indexes mDA+
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[startIndex / pageSize]; W+GBSl
} (0y!{ (a
} D5Rp<PBq,
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publicint getNextIndex(){ 4yTgH0(T
int nextIndex = getStartIndex() + 9k9}57m.i
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pageSize; x5g&?2[
if(nextIndex >= totalCount) 8]#J_|A6Z
return getStartIndex(); =s.0 f:(
else @>ys,dy
return nextIndex; k&[6Ld0~56
} 5sEk rT '
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publicint getPreviousIndex(){ Z-}A"n
int previousIndex = getStartIndex() - ql5&&e=-
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pageSize; <h+UC# .x
if(previousIndex < 0) /9SoVU8
return0; \AI-x$5R*
else 7$0bgWi
return previousIndex; VL"Cxs
} fO#nSB/
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} #Ddo` >`&
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抽象业务类 D\J.6W
java代码: x<w-j[{k_K
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/** |G/)<1P
* Created on 2005-7-12 mss.\
*/ S&l [z,
package com.javaeye.common.business; %<O~eXY
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import java.io.Serializable; 1x##b[LC
import java.util.List; /Wl8Jf7'
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import org.hibernate.Criteria; 'F/uD1;
import org.hibernate.HibernateException; ~-sG&u>
import org.hibernate.Session; c*R\fQd
import org.hibernate.criterion.DetachedCriteria; 5L7nEia'
import org.hibernate.criterion.Projections; XXwo(trs~=
import bQN3\mvY
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org.springframework.orm.hibernate3.HibernateCallback; Tk 'Pv
import
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org.springframework.orm.hibernate3.support.HibernateDaoS ApggTzh@
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upport; ^,f^YL;
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import com.javaeye.common.util.PaginationSupport; i>-#QKqJ
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public abstract class AbstractManager extends Jko=E
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HibernateDaoSupport { fb[lL7
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privateboolean cacheQueries = false; BT3yrq9
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privateString queryCacheRegion; f?16%Rk<
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publicvoid setCacheQueries(boolean *.1#+h/]3
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cacheQueries){ a>d`g
this.cacheQueries = cacheQueries; jlqSw4_
} 2r+nr
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publicvoid setQueryCacheRegion(String !4Sd ^"
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queryCacheRegion){ .SSyW{a3w
this.queryCacheRegion = V)u#=OS
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queryCacheRegion; <7L-25 =
} }1CvbB%,A
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publicvoid save(finalObject entity){ tehWGqx)
getHibernateTemplate().save(entity); bcxR7<T,"9
} A9J{>f
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publicvoid persist(finalObject entity){ X(8LhsP
getHibernateTemplate().save(entity); ,K30.E
} <F-IF7>a
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publicvoid update(finalObject entity){ }w>UNGUMh
getHibernateTemplate().update(entity); k$DRX)e
} ,4-],~T
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publicvoid delete(finalObject entity){ 5'w&M{{9
getHibernateTemplate().delete(entity); >f1fvv6
} DPmY_[OAE
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publicObject load(finalClass entity, uGYH4
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finalSerializable id){ v5?ct?q
return getHibernateTemplate().load #i.BOQxS
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(entity, id); z fy(j
} \~U:k4
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publicObject get(finalClass entity, 4V
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finalSerializable id){ m<*+^JN
return getHibernateTemplate().get +<B"g{dLuX
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(entity, id); .>-D{
} *#?9@0b@
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publicList findAll(finalClass entity){ dAOJ:
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return getHibernateTemplate().find("from Kf,AnKkn'
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" + entity.getName()); A4KkX
} OekE]`~w
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publicList findByNamedQuery(finalString C?<-`$0
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namedQuery){ z 61F q
return getHibernateTemplate e9QjRx
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().findByNamedQuery(namedQuery); A#i[Us|
} #2Iw%H 2q&
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publicList findByNamedQuery(finalString query, XSh[#qJ
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finalObject parameter){ @s,kx.S
return getHibernateTemplate hC]:+.Q+
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().findByNamedQuery(query, parameter); P1$D[aF9$
} dAM]ZR<
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publicList findByNamedQuery(finalString query, hb}Qt Q
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finalObject[] parameters){ 'jye*
return getHibernateTemplate :<5jlpV(
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().findByNamedQuery(query, parameters); l$R9c+L=
} t"MrrK>T
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publicList find(finalString query){ 'Ddzlip
return getHibernateTemplate().find hyhm{RC?[
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(query); 8 ~Pdr]5
} w2lO[o~x}
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publicList find(finalString query, finalObject `/B+
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parameter){ .5 {<