Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 N|Cs=-+
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ;sOsT?)7$
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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 YZwaD b
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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 X@wm1{!
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分页支持类: 6[P-Ny{z
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java代码: p.K*UP
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package com.javaeye.common.util; IyUdZ,ba
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import java.util.List; 9";sMB}W*
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publicclass PaginationSupport { /R8p]
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publicfinalstaticint PAGESIZE = 30; {3\R|tZh,`
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privateint pageSize = PAGESIZE; ^4Uw8-/ 9
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privateList items; N3A<:%s
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privateint totalCount; U.0kR/>Z=
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privateint[] indexes = newint[0]; s95F#>dr
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privateint startIndex = 0; l&(l$@t
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public PaginationSupport(List items, int 2a=sm1?
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totalCount){ PO-"M)M
setPageSize(PAGESIZE); j6:7AH|!)2
setTotalCount(totalCount); (U1]:tZ<.
setItems(items); N;sm*+r
setStartIndex(0); $9!D\N,}]C
} Jl<ns,Zg
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public PaginationSupport(List items, int #&.]"
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totalCount, int startIndex){ a>mMvc"
setPageSize(PAGESIZE); @J'YV{]
setTotalCount(totalCount); "?}uQ5f
setItems(items); JgRYljQi2
setStartIndex(startIndex); vG.9H_&
} 5r,r%{@K
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public PaginationSupport(List items, int 1eS_
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totalCount, int pageSize, int startIndex){ .3qu9eP
setPageSize(pageSize); Z=S>0|`R
setTotalCount(totalCount); _D7 ]-3uC!
setItems(items); ]88];?KS}
setStartIndex(startIndex); o:q1beU
} sq /]wzT:
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publicList getItems(){ )~)*=u/
return items; .4y>QN#VL
} GwU?wIIj^
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publicvoid setItems(List items){ P$GjF-!:
this.items = items; SGc8^%-`
} =3~/:8o
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publicint getPageSize(){ Z)9g~g94
return pageSize; |]=2 }%1w
} 7%?jL9Vw
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publicvoid setPageSize(int pageSize){ `Mj}md;O"
this.pageSize = pageSize; /t<@"BoV
} RkEN
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publicint getTotalCount(){ `Pn[tuIO
return totalCount; 6R;3%-D
} fU3`v\X
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publicvoid setTotalCount(int totalCount){
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if(totalCount > 0){ G$zL)R8GE|
this.totalCount = totalCount; Scm36sT{
int count = totalCount / zQ6p+R7D
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pageSize; Z=5qX2fy1*
if(totalCount % pageSize > 0) Q:C$&-$
count++; V! |qYM.
indexes = newint[count]; p{)5k
for(int i = 0; i < count; i++){ =,!\~`^
indexes = pageSize * /2M.~3gQ
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} Qcjc,
}else{ :q<Z'EnW
this.totalCount = 0; DmVP
} ^>y@4q B
} Z BUArIC
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publicint[] getIndexes(){ 60=m
return indexes; F(#rQ_z]
} h0Z{,s}
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publicvoid setIndexes(int[] indexes){ Z+`{ 7G?4m
this.indexes = indexes; \,Lo>G`!
} "P@>M) -9Z
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publicint getStartIndex(){ w6dFb6~R
return startIndex; 7`IpBm<
} YKbCdLQ
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publicvoid setStartIndex(int startIndex){ 0Z<I%<8bK
if(totalCount <= 0) Zc
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this.startIndex = 0; r,goRK.
elseif(startIndex >= totalCount) :4)Qt
this.startIndex = indexes Sw`RBN[ yo
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[indexes.length - 1]; ?; YC'bF
elseif(startIndex < 0) 8l?piig#
this.startIndex = 0; &0TVi
else{ Q(d9n8
this.startIndex = indexes GhY1k";
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[startIndex / pageSize]; }u+a<:pkK
} uV-'~8
} D9mz9
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publicint getNextIndex(){ @\oz4^
int nextIndex = getStartIndex() + `s '#
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pageSize; kY,U8a3!
if(nextIndex >= totalCount) yq_LW>|Z
return getStartIndex(); dw~p?[
else e}@)z3Q<l
return nextIndex; P+t#4J
} 2Nxm@B` {
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publicint getPreviousIndex(){ bsxTqJ
int previousIndex = getStartIndex() - sG~<M"znV
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pageSize; V Km!Ri$
if(previousIndex < 0) %xlqF<
return0; sC00un%
else B,z<%DAE
return previousIndex; [ rNXQ`/
} Nf3.\eR
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} a"/#+=[
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抽象业务类 <)g8yA
java代码: m`4R]L]
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/** dk
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* Created on 2005-7-12 e@@?AB$n(
*/ uUE9g
package com.javaeye.common.business; wn
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import java.io.Serializable; ` b !5^W
import java.util.List; 3QI?[R.
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import org.hibernate.Criteria; UE _fpq
import org.hibernate.HibernateException; rzrl>9
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import org.hibernate.Session; @=w<B4L
import org.hibernate.criterion.DetachedCriteria; g#NZ ,~
import org.hibernate.criterion.Projections; s57N) 0kP
import QQk{\PV
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org.springframework.orm.hibernate3.HibernateCallback; 6*9}4`
import ~5ZvOX6L2
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org.springframework.orm.hibernate3.support.HibernateDaoS |6J ?8y
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upport; _ 7oV<
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import com.javaeye.common.util.PaginationSupport; {P8[X@Lu
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public abstract class AbstractManager extends {"*VU3%q
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HibernateDaoSupport { Uu6L~iB
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privateboolean cacheQueries = false; f#%JSV"7
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privateString queryCacheRegion; C2]Kc{4
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publicvoid setCacheQueries(boolean LiDvaF:@L!
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cacheQueries){ K*K1(_x=
this.cacheQueries = cacheQueries; |sqZ $Mu
} ,p{`pma
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publicvoid setQueryCacheRegion(String Hx^!:kxk
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queryCacheRegion){ PZ:u_*Vu`
this.queryCacheRegion = XA0(f*
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queryCacheRegion; %kf>&b,Mi
} Kj=gm .
{ PlK@#UN
publicvoid save(finalObject entity){ ?{o/I\\
getHibernateTemplate().save(entity); lw8"'0
} (lA.3 4.p
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publicvoid persist(finalObject entity){ \`'KlF2
getHibernateTemplate().save(entity); ^jdL@#k00
} *E>.)B i
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publicvoid update(finalObject entity){ =<f-ob8,
getHibernateTemplate().update(entity); 6,Hqb<(
} A )nW
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publicvoid delete(finalObject entity){ Df07y<>7Q
getHibernateTemplate().delete(entity); W@L3+4
} uE_c4Hp
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publicObject load(finalClass entity, 4C_c\;d
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finalSerializable id){ =?}twC$
return getHibernateTemplate().load 4Wel[]
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(entity, id); Z%o7f6P0IX
} `hh9"Ws%
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publicObject get(finalClass entity, e&Y0}oY
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finalSerializable id){ OTvROJP
return getHibernateTemplate().get 6o3T;h
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(entity, id); #m. AN
} >O{7/)gS^
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publicList findAll(finalClass entity){ I?Y d
return getHibernateTemplate().find("from 1IH[g*f
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" + entity.getName()); X33v:9=
} Z_z#QX>=D
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publicList findByNamedQuery(finalString ,\ldz(D?+
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namedQuery){ mMw;0/n
return getHibernateTemplate E{^^^"z P
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().findByNamedQuery(namedQuery); hq_~^/v\
} a0_(eO-S
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publicList findByNamedQuery(finalString query, &~~s6
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finalObject parameter){ \P?ToTTV
return getHibernateTemplate aO1IVESr$
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().findByNamedQuery(query, parameter); r2eQ{u{nX
} iyM^[/-R6
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publicList findByNamedQuery(finalString query, +uQB
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finalObject[] parameters){ 2_pz3<,\
return getHibernateTemplate : }?{@#Z
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().findByNamedQuery(query, parameters); mvTb~)
} M []OHw
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publicList find(finalString query){ } p'8w\C$
return getHibernateTemplate().find H?:Jq\Ba0
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(query); pCt}66k}
} K5flit4-
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publicList find(finalString query, finalObject B=zMYi
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parameter){ 'j79GC0
return getHibernateTemplate().find <5ZJ]W
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(query, parameter); I'IB_YRL4
} lO2k<
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public PaginationSupport findPageByCriteria ?)cJZ>$!w
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(final DetachedCriteria detachedCriteria){ u2lmwE
return findPageByCriteria 5Rs?CVVb
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); I7Zq}Pxa
} oNSz&