Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 G{pF! q
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 "kt7m
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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 1=_?Wg:
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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 |I]G=.*E
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分页支持类: \Pfm>$Ib=
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java代码: q.hpnE~#lh
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package com.javaeye.common.util; 2zsDb'r
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import java.util.List; ckdCd
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publicclass PaginationSupport { ;x)f;!e+
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publicfinalstaticint PAGESIZE = 30; &)Vuh=
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privateint pageSize = PAGESIZE; >U:.5Tch'V
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privateList items; #3C]"
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privateint totalCount; 0;5qo~1
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privateint[] indexes = newint[0]; p?s[I)e
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privateint startIndex = 0; bhjJH,%_>
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public PaginationSupport(List items, int ,7Q b24A
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totalCount){ Gd2t^tc
setPageSize(PAGESIZE); |r`0< `
setTotalCount(totalCount); v00w
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setItems(items); Cm6%wAzC
setStartIndex(0); Ap(>mUs!i
} QlnI &o
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public PaginationSupport(List items, int OYIH**?
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totalCount, int startIndex){ h"$],=
setPageSize(PAGESIZE); u3vw[k
setTotalCount(totalCount); $2v{4WP7G
setItems(items); 3AC/;WB9
setStartIndex(startIndex); m@`
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} jW.IkG[|
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public PaginationSupport(List items, int \ci[<CP
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totalCount, int pageSize, int startIndex){ ARJ} h
setPageSize(pageSize); RATW[(ZA
setTotalCount(totalCount); zqGo7;;#
setItems(items); T oK'Pd
setStartIndex(startIndex); 5m a(~5
} Pu0O6@Rg
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publicList getItems(){ b~EA&dc
return items; sy+tLDMd
} A:Kit_A
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publicvoid setItems(List items){ ;{K/W.R
this.items = items; LRmH@-qP
} iz\GahK
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publicint getPageSize(){ ]='zY3
return pageSize; vvcA-k?
} /4#A|;d_
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publicvoid setPageSize(int pageSize){ {Z{!tR?+
this.pageSize = pageSize; u8i!Fxu
} U8R*i7
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publicint getTotalCount(){ 4n,>EA85
return totalCount; QcG-/_,'}
}
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publicvoid setTotalCount(int totalCount){ `78)|a*R.
if(totalCount > 0){ UbSAyf
this.totalCount = totalCount; wj#A#[e
int count = totalCount / o!>h
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pageSize; |?/,ED+|>D
if(totalCount % pageSize > 0) }0z]sYI
count++; hqVxvS"
indexes = newint[count]; KBkS>0;X
for(int i = 0; i < count; i++){ b?{ \t;
indexes = pageSize * ]3bXJE
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} r\DA&b
}else{ Y+0HC2(o
this.totalCount = 0; ( !=^ (Nd
} TZYz`l+v
} qxW^\u!<
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publicint[] getIndexes(){ -N~eb^3[c
return indexes; b!3Y<D*
} %RX}sS
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publicvoid setIndexes(int[] indexes){ Hm*?<o9mxC
this.indexes = indexes; N497"H</
} Qq*Ks
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publicint getStartIndex(){ !H/5Ud9
return startIndex; _m2p>(N|
} (Y>|P
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publicvoid setStartIndex(int startIndex){ a15kFun
if(totalCount <= 0) IP=."w
this.startIndex = 0; g\q*,1
elseif(startIndex >= totalCount) K! I]0!:
this.startIndex = indexes O|I)HpG;
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[indexes.length - 1]; ! uX0G4
elseif(startIndex < 0) |h(05Kbk
this.startIndex = 0; fNnX{Wq
else{ : 7Jpt3
this.startIndex = indexes LCouDk(=`
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[startIndex / pageSize]; ~H1ZQ[
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} O\&-3#e
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publicint getNextIndex(){ |O4LR,{G.w
int nextIndex = getStartIndex() + !Pf6UNN'
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pageSize; H{CiN
if(nextIndex >= totalCount) @4xV3Xkf&C
return getStartIndex(); ayK?\srw
else aTU[H~dTU
return nextIndex; y 13Y,cz~B
} jhF&
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publicint getPreviousIndex(){ n3B#M}R
int previousIndex = getStartIndex() - Um2RLM%
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pageSize; <TQ,7M4X
if(previousIndex < 0) ]21`x
return0; %`)lCK)2
else qayM0i>>
return previousIndex; u}QcyG^
} *-\qO.4\
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} ]TX"BH"2
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抽象业务类 )1, U~+JFU
java代码: {v>8Kp7_R
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/** 5`\"UC7?%
* Created on 2005-7-12 me ,lE-
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package com.javaeye.common.business; [!ilcHE)
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import java.io.Serializable; B]#^&89wG)
import java.util.List; tV"Jh>Z
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import org.hibernate.Criteria; Dt:NBN
import org.hibernate.HibernateException; \&\U&^?
import org.hibernate.Session; ~i
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import org.hibernate.criterion.DetachedCriteria; ~+S,`8-P
import org.hibernate.criterion.Projections; 1A}#j
import Mi)h<lY
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org.springframework.orm.hibernate3.HibernateCallback; ;Z.sK-NJ4
import noZ!j>f{@l
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org.springframework.orm.hibernate3.support.HibernateDaoS Rrw6\iO
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upport; ;pt.)5
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import com.javaeye.common.util.PaginationSupport; >XPR)&t
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public abstract class AbstractManager extends Ia j`u
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HibernateDaoSupport { FBeo@
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privateboolean cacheQueries = false; Ij2Th]
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privateString queryCacheRegion; uaqV)H
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publicvoid setCacheQueries(boolean BVG.ZZR})
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cacheQueries){ GG
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this.cacheQueries = cacheQueries; *X
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} y7vA[us
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publicvoid setQueryCacheRegion(String w ufQyT`
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queryCacheRegion){ C:.>*;?7
this.queryCacheRegion = |]eWO#vs
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queryCacheRegion; L),r\#Y(v
} 5a|{ytP
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publicvoid save(finalObject entity){ X*M2 O%g`L
getHibernateTemplate().save(entity); -s^)HR
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} " ~q~)T1Z
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publicvoid persist(finalObject entity){ S^iT&;,
getHibernateTemplate().save(entity); O~|Y#T
} +5Ju `Z
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publicvoid update(finalObject entity){ @w(X}q1
getHibernateTemplate().update(entity); <vt}+uMzXv
} {E.A?yej9
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publicvoid delete(finalObject entity){ K%UjPzPWw
getHibernateTemplate().delete(entity); O7m-_#/\
} 9W&nAr
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publicObject load(finalClass entity, 4m6/ba
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finalSerializable id){ ^O!;KIe{g
return getHibernateTemplate().load x,HD,VQR/
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(entity, id); Ii!{\p!
} @sUec
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publicObject get(finalClass entity, rONz*ly|i
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finalSerializable id){ @}pcj2K#
return getHibernateTemplate().get z
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(entity, id);
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} -@@
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publicList findAll(finalClass entity){ S VypR LVB
return getHibernateTemplate().find("from OIkjO}/7
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" + entity.getName()); *S?'[PS]1
} '
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publicList findByNamedQuery(finalString !?lvmq
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namedQuery){ Sjo-Xf}
return getHibernateTemplate Y#+Ws0wN
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().findByNamedQuery(namedQuery); _#
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} {R"mvB`
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publicList findByNamedQuery(finalString query, Z?'?|vM
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finalObject parameter){ cP\ZeG#<
return getHibernateTemplate e,d}4 jy
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().findByNamedQuery(query, parameter); HD3WsIim*
} gYbcBb%z
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publicList findByNamedQuery(finalString query, *IIA"tC
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finalObject[] parameters){ *rB@[(/
return getHibernateTemplate PjXiYc&
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().findByNamedQuery(query, parameters); d[ _@l
} :4\%a4{Ie
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publicList find(finalString query){ EPR85[k
return getHibernateTemplate().find UZ "!lpg
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(query); KP
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} /^v!B`A@
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publicList find(finalString query, finalObject [lVfhXc&
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parameter){ W*DKpJy
return getHibernateTemplate().find FnI}N;"
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(query, parameter); 7WY~v2SDF
} wLb:FB2
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public PaginationSupport findPageByCriteria /W .G-|:
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(final DetachedCriteria detachedCriteria){ Zu~w:uNmU
return findPageByCriteria ef_H*e
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); -~4r6ZcA
} <&g