Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 _:x]'w%
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 Ss3p6%V/
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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 twT/uBQ4a
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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 3]Z1kB
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分页支持类: q6zVu(
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java代码: ?Oyo /?/
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package com.javaeye.common.util; -<W?it?D
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import java.util.List; S}6Ld(_
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publicclass PaginationSupport { '-iEbE
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publicfinalstaticint PAGESIZE = 30; d?,'$$ aB
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privateint pageSize = PAGESIZE; :@A&HkF
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privateList items; /K=OsMl2b8
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privateint totalCount; L2}\Ah"[
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privateint[] indexes = newint[0]; bJd|mm/v
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privateint startIndex = 0; ZU4=&K
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public PaginationSupport(List items, int a:FU- ^B4~
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totalCount){ 6$u/N gS
setPageSize(PAGESIZE); wu
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setTotalCount(totalCount); i:lc]B
setItems(items); l:HQ@FX
setStartIndex(0); .OPknC
} ,Qj G|P
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public PaginationSupport(List items, int S%SYvA
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totalCount, int startIndex){ -amo8V;2H
setPageSize(PAGESIZE); ^y<^hKjV
setTotalCount(totalCount); E`HoJhB
setItems(items); -hd
setStartIndex(startIndex); L.n@;*
} ]'.qRTz'\t
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public PaginationSupport(List items, int }:m#}s
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totalCount, int pageSize, int startIndex){ ,=/9Ld2w9
setPageSize(pageSize); uGU2
setTotalCount(totalCount); 0.MB;gm:
setItems(items); <)qa{,GX\
setStartIndex(startIndex); <=(K'eqC^
} 7 N}@zPAZ
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publicList getItems(){ HqGI.
return items; ysaRH3M
} r~b.tpH
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publicvoid setItems(List items){ 6pt,]FlU
this.items = items; qe]D4K8`Q3
} I?T
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publicint getPageSize(){ 92TuuN#{
return pageSize; FFT)m^4p.
} x39tnf/F
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publicvoid setPageSize(int pageSize){ Agcss20.
this.pageSize = pageSize; [(X~C*VdxM
} ;,y_^-h;
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publicint getTotalCount(){ hY)zKX_r
return totalCount; Q2CGC+
} d59rq<yI
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publicvoid setTotalCount(int totalCount){ R
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if(totalCount > 0){ GT6; I7
this.totalCount = totalCount; j{C~wy!J
int count = totalCount / >+O0W)g{o
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pageSize; :ez76oGyc
if(totalCount % pageSize > 0) [R]V4Hb
count++; rO87V!Cj
indexes = newint[count]; rwWOhD)RU
for(int i = 0; i < count; i++){ 5Tn<
indexes = pageSize * '5}hm1,
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} "8QRYV~Z
}else{ =!Ik5LiD
this.totalCount = 0; {i>AQ+z61f
} !@C-|=9G
} Zpd-ob
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publicint[] getIndexes(){ /_{-~0Z=@B
return indexes; T;u;r@R/
} P@y)K!{Nk
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publicvoid setIndexes(int[] indexes){ Zma;An6
this.indexes = indexes; tP_.-//
} [8u9q.IZ
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publicint getStartIndex(){ oc?|"
return startIndex; kEh9J>|M
} RHsVG &<j
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publicvoid setStartIndex(int startIndex){ {OG1' m6=/
if(totalCount <= 0) lz^Vi!|p
this.startIndex = 0; 4KH'S'eR
elseif(startIndex >= totalCount) :EW1I>}_
this.startIndex = indexes @tT`s^e
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[indexes.length - 1]; $YJ 1P
elseif(startIndex < 0) Mg >%EH/'
this.startIndex = 0; 4(8c L?J`0
else{ IlJ"t`Z9)
this.startIndex = indexes :1d;jx>
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[startIndex / pageSize]; k7uX!}
} \7\sx:!$
} c{^1`(#?
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publicint getNextIndex(){ {?Slo5X|
int nextIndex = getStartIndex() + -axKnfj
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pageSize; 4{>r_^8
if(nextIndex >= totalCount) A}"|_&E
return getStartIndex(); we}xGb.u
else v:lkvMq|=
return nextIndex; ",apO
} 0}GO$%l
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publicint getPreviousIndex(){ YM#'+wl}`
int previousIndex = getStartIndex() - "s@Hg1
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pageSize; 'qV lq5.
if(previousIndex < 0) G/
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return0; p*K #s1
else +wG
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return previousIndex; y/@Bhzc
} &q&z$Gc;m
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} yR5XcPoKI
}
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抽象业务类 zMepF]V
java代码: N 75U.;U0
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/** '7' 73
* Created on 2005-7-12 <Z[Z&^
*/ Q>[{9bI4QP
package com.javaeye.common.business; U| yt
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import java.io.Serializable; JQLQS
import java.util.List; Wrbv<8}%c
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import org.hibernate.Criteria; _9-;35D_
import org.hibernate.HibernateException; _W@sFv%sj
import org.hibernate.Session; */~|IbZ`o
import org.hibernate.criterion.DetachedCriteria; [#wt3<d`)
import org.hibernate.criterion.Projections; 3N]ushMO
import S%H"i
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org.springframework.orm.hibernate3.HibernateCallback; zvN7aG
import `]]m$
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org.springframework.orm.hibernate3.support.HibernateDaoS ?i_2ueVR
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upport; t(<k4 ji,
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import com.javaeye.common.util.PaginationSupport; &R/-~w5
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public abstract class AbstractManager extends F.(W`H*1+
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HibernateDaoSupport { ^0"fPG`
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privateboolean cacheQueries = false; LD{~6RP
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privateString queryCacheRegion; [6\O
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publicvoid setCacheQueries(boolean ;"f9"
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cacheQueries){ R,7.o4Wt
this.cacheQueries = cacheQueries; T&1-gswr:
} 8/B8yY-O
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publicvoid setQueryCacheRegion(String |-v/
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queryCacheRegion){ A?-t`J
this.queryCacheRegion = /: -ig .YY
;
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queryCacheRegion; \k$cg~
} e Vj 8u
{
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publicvoid save(finalObject entity){ F:Vl\YZ
getHibernateTemplate().save(entity); , iEGf-!k
} 8~!h8bkC
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publicvoid persist(finalObject entity){ %U<lS.i
getHibernateTemplate().save(entity); a@_n>$LZL
} hQ)?LPUB
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publicvoid update(finalObject entity){ |Eu#mN
getHibernateTemplate().update(entity); Q(WfWifu-|
} 8z-wdO\
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publicvoid delete(finalObject entity){ b;`MHEzw&q
getHibernateTemplate().delete(entity); >7?Lq<H
} Us6~7L00
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publicObject load(finalClass entity, i*xVD`x ~
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finalSerializable id){ #BEXj<m+J
return getHibernateTemplate().load >0 := <RW
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(entity, id); Nog{w
} 3nq4Y'
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publicObject get(finalClass entity, # b3 14
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finalSerializable id){ FIJ]`
return getHibernateTemplate().get aTaL|&(
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(entity, id); fTy{`}>
} pm}_\_
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publicList findAll(finalClass entity){ W$}2
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return getHibernateTemplate().find("from 9y\Ik/
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" + entity.getName()); |o_
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} -Lsl
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publicList findByNamedQuery(finalString !(_qM
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namedQuery){ nS!m1&DeD
return getHibernateTemplate >)`*:_{
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().findByNamedQuery(namedQuery); vQ5rhRG)E
} e{Mkwi+j
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publicList findByNamedQuery(finalString query, 4SkCV
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finalObject parameter){ ?;rRR48T9E
return getHibernateTemplate 9:!V":8q
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().findByNamedQuery(query, parameter); %zjyZ{=
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publicList findByNamedQuery(finalString query, [L2N[vy;
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finalObject[] parameters){ 9KL)5_6 M
return getHibernateTemplate tac_MtW?
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().findByNamedQuery(query, parameters); UE/iq\a>
} oJc v D
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publicList find(finalString query){ @ +>>TGC
return getHibernateTemplate().find nI`9|W
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(query); (]"`>,ray
} >)F)@KAuN4
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publicList find(finalString query, finalObject x,<|<W5<%
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parameter){ wemhP8!gc
return getHibernateTemplate().find dsZ-|C
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(query, parameter); [TmZ\t!5$
} `$] ZT>&
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public PaginationSupport findPageByCriteria _BND{MsX
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(final DetachedCriteria detachedCriteria){ .|LY /q\A
return findPageByCriteria VpxsgCS
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); /,9n1|FrG
} AR)A <