Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 yQ^($#Yk
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 !zPa_`P
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 'A:x/iv}^
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 s1e:v+B]
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分页支持类: vP!{",>
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java代码: 4"xPr[=iG
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package com.javaeye.common.util; Ma+$g1$
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import java.util.List; e'=MQ,EWd
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publicclass PaginationSupport { !}4MN:r
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publicfinalstaticint PAGESIZE = 30; c wOJy>
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privateint pageSize = PAGESIZE; fgBM_c&9T
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privateList items; J]q%gcM
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privateint totalCount; v*9<c{a
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privateint[] indexes = newint[0]; 2hee./F`
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privateint startIndex = 0; Y;)dct
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public PaginationSupport(List items, int r YF #^
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totalCount){ tqy@iEz+
setPageSize(PAGESIZE); [xT:]Pw}
setTotalCount(totalCount); l/Vo-#
setItems(items); ^1wA:?uN}
setStartIndex(0);
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} ?X5]i#j[
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public PaginationSupport(List items, int 5l,ZoB8
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totalCount, int startIndex){ Vp<seO;7o
setPageSize(PAGESIZE); UK{irU|\
setTotalCount(totalCount); Gdg)9
setItems(items); _ib"b#
setStartIndex(startIndex); PC qZNBN
} 8kbY+W%n
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public PaginationSupport(List items, int R@wjccu
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totalCount, int pageSize, int startIndex){ @G:V
setPageSize(pageSize); i[ $0a4
setTotalCount(totalCount); LPwT^zV&N
setItems(items); ~h"/Tce
setStartIndex(startIndex); jA(>sz
} 5'Q|EIL
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publicList getItems(){ :0/q5_t
return items; 4HAp{a1
} 7 t?*
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publicvoid setItems(List items){ E0/mSm"(T
this.items = items; nkv(~ej(
} @VN&t:/ l
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publicint getPageSize(){ 2Sq_Tw3^
return pageSize; '&99?s`u
} | ea~'N1
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publicvoid setPageSize(int pageSize){ {}o>{&X
this.pageSize = pageSize; c>1RP5vx
} F3oQ^;xB
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publicint getTotalCount(){ !vn1v)6
return totalCount; 9]'($:LF08
} +m}Pmi$
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publicvoid setTotalCount(int totalCount){ =H8 xSJLh
if(totalCount > 0){ L'i-fM[#
this.totalCount = totalCount; a{[+<8=@1
int count = totalCount / nJ?^?M'F%
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pageSize; =TP(
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if(totalCount % pageSize > 0) PS
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count++; fnCItK~y
indexes = newint[count]; `d 2,*KR
for(int i = 0; i < count; i++){ GFk1/ F
indexes = pageSize * -;;Z 'NM;8
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} nH !3(X*
}else{ QMo}W{D
this.totalCount = 0; Z.i{i^/#(
} _)$PKOzbb
} x\s,= n3z
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publicint[] getIndexes(){ CY?G*nS?iK
return indexes; jy2IZ o
} 'j%F]CK
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publicvoid setIndexes(int[] indexes){ _kFYBd
this.indexes = indexes; K:y^OAZfV
} <uP^-bv;(
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publicint getStartIndex(){ fR-C0"c
return startIndex; .wrL3z_
} P
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publicvoid setStartIndex(int startIndex){ t@?u
if(totalCount <= 0) o**y Z2
this.startIndex = 0; ~<qt%W?
elseif(startIndex >= totalCount) S\NL+V?7h
this.startIndex = indexes 0m9ZQ
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[indexes.length - 1]; w8~K/>!f
elseif(startIndex < 0) |`yZIY_
this.startIndex = 0; L$v^afP?
else{ u3tZ[Y2 c
this.startIndex = indexes E^ h=!RW{
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[startIndex / pageSize]; )E7 FA|
} y@ek=fT%4
} M"^K0 .
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publicint getNextIndex(){ BZ+-p5]-
int nextIndex = getStartIndex() + &;q<M_<
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pageSize; @y~P&HUN
if(nextIndex >= totalCount) vrl[BPI
return getStartIndex(); sJr5t?
else U_z2J(e~
return nextIndex; M7y|EB))
} GaNq2 G
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publicint getPreviousIndex(){ jPu5nwvUV>
int previousIndex = getStartIndex() - ]= x
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pageSize; 1IA5.@G:
if(previousIndex < 0) ^3I'y
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return0; ,=w!vO5s
else :
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return previousIndex; \gKdDS
} ?AsDk ~3
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} pVokgUrC
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抽象业务类 bejGfc
java代码: ,Q2N[Jwd$
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/** 03E3cp"
* Created on 2005-7-12 ~w.2-D
*/ DzDj)7
package com.javaeye.common.business; ; h+ q
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import java.io.Serializable; lCFU1 GHH
import java.util.List; dK# h<q1
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import org.hibernate.Criteria; R7aXR\ R
import org.hibernate.HibernateException; ep?:;98|t
import org.hibernate.Session; 8W{~wg`
import org.hibernate.criterion.DetachedCriteria; BjD&>gO)
import org.hibernate.criterion.Projections; {!K;`I[]v
import 5EhE`k4
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org.springframework.orm.hibernate3.HibernateCallback; ^![{,o@"A
import .~<]HAwq
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org.springframework.orm.hibernate3.support.HibernateDaoS F$ {4X /9n
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upport; A+2oh3
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import com.javaeye.common.util.PaginationSupport; x(6vh2#vD
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public abstract class AbstractManager extends zlMlMyG4
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HibernateDaoSupport { @W)/\AZ3
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privateboolean cacheQueries = false; q]ZSjJ
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privateString queryCacheRegion; 9RcM$[~
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publicvoid setCacheQueries(boolean T{;=#rG<
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cacheQueries){ {kG;."S+K
this.cacheQueries = cacheQueries; !&0a<~Wi
} 0%;MVMH
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publicvoid setQueryCacheRegion(String -#Jj-t_Fe
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queryCacheRegion){ i0i`k^bA
this.queryCacheRegion =
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queryCacheRegion; Wa}"SqYr h
} ,#Ln/;
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publicvoid save(finalObject entity){ ,N;v~D$Y
getHibernateTemplate().save(entity); wJ(8}eI
} f:FpyCo=9
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publicvoid persist(finalObject entity){ e9}8RHy1$
getHibernateTemplate().save(entity); k?n]ZNlT
} 2i"HqAB
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publicvoid update(finalObject entity){ A{t"M-<
getHibernateTemplate().update(entity); -UTV:^
} ?0m?7{
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publicvoid delete(finalObject entity){ Bf+^O)Ns^
getHibernateTemplate().delete(entity); :Ip~)n9t
} GGp{b>E+
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publicObject load(finalClass entity, CJ:uYXJJ:z
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finalSerializable id){ -2z,cj&E{
return getHibernateTemplate().load k5g@myb-
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(entity, id); gDMAc/V`l
} G6<HO7\
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publicObject get(finalClass entity, :K:f^o]s
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finalSerializable id){ m_(E(_
return getHibernateTemplate().get GIK
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(entity, id); #*+;B93)
} nQ!N}5[z'
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publicList findAll(finalClass entity){ F@Pem
return getHibernateTemplate().find("from <Ak:8&$O
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} f>p; siR)
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publicList findByNamedQuery(finalString }WA<=9e
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namedQuery){ MkkA{p
return getHibernateTemplate vi^z5n
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().findByNamedQuery(namedQuery); 5s#R`o%Z
} t`)
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publicList findByNamedQuery(finalString query, 8rla0d@
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finalObject parameter){ n PAl8
return getHibernateTemplate \Ei(HmEU
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().findByNamedQuery(query, parameter); 'c[|\M!u
} &gv{LJd5b
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publicList findByNamedQuery(finalString query, M= ]]kJ:I
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finalObject[] parameters){ 9y$"[d27;+
return getHibernateTemplate BH;7CK=7R
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