Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 *|n-Hr
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 >d2U=Yk!
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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 Y=0D[o8
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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 jMFLd
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分页支持类: 1j4tR#L
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java代码: vNo(`~]c
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package com.javaeye.common.util; 5 1&||.
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import java.util.List; VDy2!0
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publicclass PaginationSupport {
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publicfinalstaticint PAGESIZE = 30; ou V%*<Ki
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privateint pageSize = PAGESIZE; z.d1>w
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privateList items; D_s0)|j$cy
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privateint totalCount; v^A4%e<8^r
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privateint[] indexes = newint[0]; Dt]N&E#\D
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privateint startIndex = 0;
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public PaginationSupport(List items, int "39\@Ow
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totalCount){ mZG)#gW[
setPageSize(PAGESIZE); c;6[lv
setTotalCount(totalCount); >(.GIR
setItems(items); HP,sNiw
setStartIndex(0); Vf*Z }'
} /BN_K8nb`
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public PaginationSupport(List items, int 'zo]
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totalCount, int startIndex){ ko-,l6E
setPageSize(PAGESIZE); 4it^-M
setTotalCount(totalCount); s;!_'1pi@
setItems(items); 4AWL::FU5
setStartIndex(startIndex); V$?@
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} QKB*N)%6
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public PaginationSupport(List items, int 93[&'
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totalCount, int pageSize, int startIndex){ 3QF/{$65!
setPageSize(pageSize); UFSbu5 j
setTotalCount(totalCount); c>b!{e@*
setItems(items); qG)M8xk
setStartIndex(startIndex); G2y`yg
} ]. E/s(p
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publicList getItems(){ umo<9Y
return items; H_nIlku
} UKpc3Jo:~
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publicvoid setItems(List items){ U_KCN09
this.items = items; p6c&vEsNj
} ZJf:a}=h
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publicint getPageSize(){ 4K(oOxc9.
return pageSize; UbDpSfub
} {A`J0ol<B9
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publicvoid setPageSize(int pageSize){ L/c`t7
this.pageSize = pageSize; =@ d/SZ|(E
} <ebC]2j8cK
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publicint getTotalCount(){ `e[>S
return totalCount; s1>d)2lX
} up!54}qy
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publicvoid setTotalCount(int totalCount){ N?s`a;Q[=
if(totalCount > 0){ 7CwQmVe+
this.totalCount = totalCount; jB"IJ$cD
int count = totalCount / q|ZzGEj:OV
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pageSize; 9<Ks2W.N
if(totalCount % pageSize > 0) eA_]%7+`
count++; 4DgH/Yo
indexes = newint[count]; QAzwNXE+
for(int i = 0; i < count; i++){ EC/=JlL`5
indexes = pageSize * uGpLh0
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} ER,!`C]
}else{ G{74o8
this.totalCount = 0; ?0tm{qP
} ^{Fo,7
} ?mHu eX
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publicint[] getIndexes(){ u<JkP <"S
return indexes; 3Z}v%=5
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} j6WDh}#
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publicvoid setIndexes(int[] indexes){ \0n<6^y
this.indexes = indexes; $It3}?>C'
} 12@Ge]
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publicint getStartIndex(){ \h/)un5
return startIndex; &$heW,
} jqlfypU
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publicvoid setStartIndex(int startIndex){ y~'%PUN
if(totalCount <= 0) D*/fY=gK
this.startIndex = 0; A=sz8?K+`
elseif(startIndex >= totalCount) ,3
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this.startIndex = indexes z.|[g$F
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[indexes.length - 1]; ^Y%<$IFG
elseif(startIndex < 0) j\HZ5
this.startIndex = 0; `!xI!Y\
else{ \5-Dp9vG
this.startIndex = indexes ?{P$|:ha
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[startIndex / pageSize]; Jn%Etz-
} y@SI )&D
} < lUpvr
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publicint getNextIndex(){ .Fx3WryF
int nextIndex = getStartIndex() + u2IU/z8
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pageSize; Gx*B(t]4y
if(nextIndex >= totalCount) 1\)C;c,
return getStartIndex(); 5jv*C]z
else 3a&HW
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return nextIndex; &fsk ESV0
} @yj~5Gf(j
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publicint getPreviousIndex(){ 2D a0*xn{
int previousIndex = getStartIndex() - x=-(p}0o;<
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pageSize; v(6[z)A0
if(previousIndex < 0) qDqy9u:g
return0; l](!2a=[
else Uw| -d[!
return previousIndex; A
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} j\NCoos
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} G`/4n@
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抽象业务类 =$%-RX7
java代码: XB@i{/6K
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/** JpZ_cb`<E'
* Created on 2005-7-12 }{kn/m/
*/ :S}ZF$
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package com.javaeye.common.business; C,%Dp0
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import java.io.Serializable; 5j\Kej
import java.util.List;
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import org.hibernate.Criteria; LK!sk5/
import org.hibernate.HibernateException; (pHJEY
import org.hibernate.Session; 0 d+b<J,
import org.hibernate.criterion.DetachedCriteria; ,%qP
import org.hibernate.criterion.Projections; X]n`YF7
import 6,|>;,U7
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org.springframework.orm.hibernate3.HibernateCallback; df {\O*6
import HR?bnkv|id
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org.springframework.orm.hibernate3.support.HibernateDaoS i[MBO`FF
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upport; ,7 m33Pv*
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import com.javaeye.common.util.PaginationSupport; -SLk8x
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public abstract class AbstractManager extends ,L<x=Dg
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HibernateDaoSupport { 2Dt^W.!
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privateboolean cacheQueries = false;
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privateString queryCacheRegion; D=Nt0y
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publicvoid setCacheQueries(boolean P)XR9&o':
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cacheQueries){ i3KAJ@
this.cacheQueries = cacheQueries; U#- 5",X|
} S6\E
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publicvoid setQueryCacheRegion(String m- a':
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queryCacheRegion){ *3OlWnZ?
this.queryCacheRegion = h?h)i>
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queryCacheRegion; tk:nth
}
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publicvoid save(finalObject entity){ 9YB?wh'S[
getHibernateTemplate().save(entity); +uj;00 D
} IP-M)_I
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publicvoid persist(finalObject entity){ N H:Bdl3
getHibernateTemplate().save(entity); LOu9 #w"
} +fKV/tSWi
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publicvoid update(finalObject entity){ #;lEx'lKN
getHibernateTemplate().update(entity); {X<_Y<
} gz uWhQo
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publicvoid delete(finalObject entity){ H;@0L}Nu+}
getHibernateTemplate().delete(entity); PR AP~P&^
} k2 _y84;D
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publicObject load(finalClass entity, WX`wz>KK^
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finalSerializable id){ ~BgYD)ov
return getHibernateTemplate().load n{qVF#N_
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(entity, id); j~=<O<P
} R<hsG%BS(D
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publicObject get(finalClass entity, SOMAs'=
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finalSerializable id){ {w,<igh
return getHibernateTemplate().get 7|bBC+;(
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(entity, id); FPZ@6
} @at*E%T[
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publicList findAll(finalClass entity){ OwgPgrV
return getHibernateTemplate().find("from !\$4A,
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" + entity.getName()); kQ_Vj7
} 9x(t"VPuS
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publicList findByNamedQuery(finalString 7fd,I% v
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namedQuery){ o4j!:CI
return getHibernateTemplate ^vzXT>t-M
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().findByNamedQuery(namedQuery); sYSq >M
} gdh|X[d
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publicList findByNamedQuery(finalString query, 9KT85t1#
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finalObject parameter){ n$>_2v
return getHibernateTemplate "]=XB0)
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().findByNamedQuery(query, parameter); V' i@N
} zxd<Cq>d
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publicList findByNamedQuery(finalString query, vDR>
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finalObject[] parameters){ B{S^t\T$
return getHibernateTemplate ]n'.}"8Kn
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().findByNamedQuery(query, parameters); %x}Unk
} jH;L7
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publicList find(finalString query){ x
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return getHibernateTemplate().find JuRWR0@`
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(query); w*(1qUF#%
} ,wHlU-%
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publicList find(finalString query, finalObject s%m?Yh3
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parameter){ mM+^v[=
return getHibernateTemplate().find .\)ek[?
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(query, parameter); s(=@J?7As
} AvuGAlP
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public PaginationSupport findPageByCriteria |h((SreO
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(final DetachedCriteria detachedCriteria){ 'g}Q@@b
return findPageByCriteria q%1B4 mF'
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); 3cNr~`7
} o_ixdnc
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public PaginationSupport findPageByCriteria \TYH7wXDP
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(final DetachedCriteria detachedCriteria, finalint 4s <ZKU
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startIndex){ em ]0^otM
return findPageByCriteria 6}\J-A/
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(detachedCriteria, PaginationSupport.PAGESIZE, "Gq%^^*
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startIndex); I Vw'YtZ
} wc}4:~
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public PaginationSupport findPageByCriteria KJV],6d
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(final DetachedCriteria detachedCriteria, finalint Rp}Sm,w(
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pageSize, .[6T7fdi
finalint startIndex){ COH>B1W@
return(PaginationSupport) &