Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 :|Ty 0>k
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 X;RI7{fW%X
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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 :HQ/vVw'"9
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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 !A0bbJ
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分页支持类: 9>P(eN
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java代码: 8r,%! 70
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package com.javaeye.common.util; vBXr[XoC
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import java.util.List; ,' B=eY,
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publicclass PaginationSupport { (k45k/PAP
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publicfinalstaticint PAGESIZE = 30; r&RSQHa)
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privateint pageSize = PAGESIZE; xn[di-LF
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privateList items; 2uEu,YC
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privateint totalCount; #1k,t
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privateint[] indexes = newint[0]; w:v:znQrW
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privateint startIndex = 0; Op~+yMef
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public PaginationSupport(List items, int #\QC%"%f
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totalCount){ _>I5Ud8(-
setPageSize(PAGESIZE); ]Hq%Q~cE
setTotalCount(totalCount); V:18]:
setItems(items); _A*0K,F-
setStartIndex(0); SF7
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} v<W++X7z
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public PaginationSupport(List items, int /.bwwj_;
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totalCount, int startIndex){ Sa5 y7
setPageSize(PAGESIZE); eH6cBX#P.
setTotalCount(totalCount); i9tM]/SP
setItems(items); L zC~> Uj
setStartIndex(startIndex); O*7
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} f0+
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public PaginationSupport(List items, int u)-l+U.
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totalCount, int pageSize, int startIndex){ AaVlNjB
setPageSize(pageSize); M-hnBt
setTotalCount(totalCount); r9[J3t*({~
setItems(items); g;T`~
setStartIndex(startIndex); pz+#1=b]
} ?*=Jq
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publicList getItems(){ uDR(^T{g#
return items; X,~C
} Xob##{P3
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publicvoid setItems(List items){ ,*US) &x
this.items = items; Y!zlte|P
} 62) F
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publicint getPageSize(){ he@swE&
return pageSize; =1C9lKm
} %VCHM GP=
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publicvoid setPageSize(int pageSize){ GU`2I/R
this.pageSize = pageSize; KV2X[1
} &CgD smJo#
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publicint getTotalCount(){ =
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return totalCount; e!#:h4I
} wuCODz@~
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publicvoid setTotalCount(int totalCount){ ,
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if(totalCount > 0){ %|Vq"MW,I
this.totalCount = totalCount; 1ARIZ;H
int count = totalCount / ^Ue>T8
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pageSize; a9%#
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if(totalCount % pageSize > 0) [/FIY!nC?
count++; L-yC 'C
indexes = newint[count]; E@p9vf->
for(int i = 0; i < count; i++){ y$rp1||lH
indexes = pageSize * ~p&sd)
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} I~,*Rgv/Z
}else{ =x>KA*O1
this.totalCount = 0; MFrVGEQBRL
} L,$9)`j
} 4?`7XJ0a
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publicint[] getIndexes(){ /KkUCq2A
return indexes; A#}IbcZ|b
} 'a}pWkLB
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publicvoid setIndexes(int[] indexes){ c;VW>&,B
this.indexes = indexes; Onao'sjY
} +m_quQ/ys
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publicint getStartIndex(){ h8Gp>b
return startIndex; W>.qGK|l
} F{v+z8nW
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publicvoid setStartIndex(int startIndex){ ^c*'O0y[D
if(totalCount <= 0) s&4Y+dk93
this.startIndex = 0; &}<IR\ci
elseif(startIndex >= totalCount) 5 Jd,]~KAP
this.startIndex = indexes yo5|~"yZY
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[indexes.length - 1]; Xh5
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elseif(startIndex < 0) &W1c#]q@r
this.startIndex = 0; !^w+<p
else{ `3~w#?+=*
this.startIndex = indexes |2Q;SaI^\
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[startIndex / pageSize]; ^vUdf.n9
} 9!tRM-
} ."${.BPn~
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publicint getNextIndex(){ ]O^!P,l)"
int nextIndex = getStartIndex() + Vx'_fb?wap
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pageSize; 3vx?x39*Y
if(nextIndex >= totalCount) 8@ b83
return getStartIndex(); 1Ypru<.)W
else H'+P7*k#M
return nextIndex; !I@"+oY<
} YQ&Xd/z-
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publicint getPreviousIndex(){ "[76>\'H
int previousIndex = getStartIndex() - >k"/:g^t
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pageSize; EI'(
if(previousIndex < 0) N/(&&\3
return0; OX!9T.j
else QM
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return previousIndex; p tMysYT'
} vtmvvv
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} {A{=RPL
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抽象业务类 MbYAK-l.h
java代码: 6#v"+V
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/** |iJ37QIM
* Created on 2005-7-12 BDpeAF8z
*/ v*kTTaU&
package com.javaeye.common.business; VHJOj
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import java.io.Serializable; ,u/GA<'#M
import java.util.List; n>{>3?
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import org.hibernate.Criteria; sa{X.}i%E
import org.hibernate.HibernateException; kP3'BBd,
import org.hibernate.Session; [/xw5rO%
import org.hibernate.criterion.DetachedCriteria; lj(}{O
import org.hibernate.criterion.Projections; KnKV+:"
import 7Q2"]f,$CQ
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org.springframework.orm.hibernate3.HibernateCallback; bmFnsqo
import >J+hu;I5
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org.springframework.orm.hibernate3.support.HibernateDaoS ?J|~G{yH
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upport; iXeywO2nP
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import com.javaeye.common.util.PaginationSupport; F|9
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public abstract class AbstractManager extends h5>JBLawQP
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HibernateDaoSupport { 46Vx)xX
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privateboolean cacheQueries = false; (=,p"3^
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privateString queryCacheRegion; x
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publicvoid setCacheQueries(boolean g^/
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cacheQueries){ s0WI93+z
this.cacheQueries = cacheQueries; %Sf%XNtu
} lOYzo
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publicvoid setQueryCacheRegion(String '(4$h3-gv7
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queryCacheRegion){ EA8K*>'pv
this.queryCacheRegion =
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queryCacheRegion; sE{A~{a`
} ]X%T^3%G
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publicvoid save(finalObject entity){ FMhSHa/B
getHibernateTemplate().save(entity); |]y]K%
} v!JQ;OX
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publicvoid persist(finalObject entity){ 0rP`BK|
getHibernateTemplate().save(entity); b S[;d5
} p'tB4V qT
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publicvoid update(finalObject entity){ k` cz$>
getHibernateTemplate().update(entity); :+: vBrJm
} ;Sl]8IZ
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publicvoid delete(finalObject entity){ l.NV]up+
getHibernateTemplate().delete(entity); lu2"?y[2
} FwKT_XkY
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publicObject load(finalClass entity, _Z'[-rcXWh
wa7)
finalSerializable id){ os9X)G
return getHibernateTemplate().load h2<Y*j
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(entity, id); 8&+m5xS
} OiAP%7i9
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publicObject get(finalClass entity, '@t}8J
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finalSerializable id){ 0Rgo#`7l
return getHibernateTemplate().get C{^U^>bU
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(entity, id); av~dH=&=
} &iYy
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publicList findAll(finalClass entity){ FyY<Vx'yQ
return getHibernateTemplate().find("from F-0 |&0
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" + entity.getName()); %+0
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} 98O0M#|d
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publicList findByNamedQuery(finalString {\u=m>2U|
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namedQuery){ ,z8<[Q-#
return getHibernateTemplate vK@t=d
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().findByNamedQuery(namedQuery); Ut|G.%1Vd%
} -SO`wL NV
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publicList findByNamedQuery(finalString query, "eRf3Q7w:
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finalObject parameter){ fjGYp
return getHibernateTemplate z;fi
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().findByNamedQuery(query, parameter); [(Jj@HlP6T
} GB MCw
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publicList findByNamedQuery(finalString query, {6E&\
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finalObject[] parameters){ 4Og&w]
return getHibernateTemplate )3 C~kmN7
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().findByNamedQuery(query, parameters); 6h8fzqRzc
} L&*/s&>b
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publicList find(finalString query){ [
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return getHibernateTemplate().find kta`[%KmIZ
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(query); ~_|OGp_a
} ~ 8hAmM
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publicList find(finalString query, finalObject <Vu/6"DP
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parameter){ cU`sA_f
return getHibernateTemplate().find Jng,:$sZ
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(query, parameter); q>JW$8
} AL(YQ)-Cg
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public PaginationSupport findPageByCriteria <0?h$hf4c
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(final DetachedCriteria detachedCriteria){ dM|&Y6
return findPageByCriteria 8
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); aVI%FycYo
} `/+%mKlC|[
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public PaginationSupport findPageByCriteria ,sU#{.(
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(final DetachedCriteria detachedCriteria, finalint c(:qid
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startIndex){ z@\r V@W5
return findPageByCriteria * &iSW~s
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(detachedCriteria, PaginationSupport.PAGESIZE, 4s{_(gy
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startIndex); DBUhqRfl
} <M//zXa
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public PaginationSupport findPageByCriteria aahAUhF
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(final DetachedCriteria detachedCriteria, finalint m@qM|%(0x
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pageSize, 0H|U9
finalint startIndex){ $m$tfa-
return(PaginationSupport) zP[_ccW@
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getHibernateTemplate().execute(new HibernateCallback(){ fa~u<