Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 >Lo6='G
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 9`hpa-m@
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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 !nZI? z ;
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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 W]C_oh
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分页支持类: Ae,2Xi
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java代码: )w3XN A_V
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package com.javaeye.common.util; >TH-Q[
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import java.util.List; PW~cqo B71
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publicclass PaginationSupport { #b<lt'gC
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publicfinalstaticint PAGESIZE = 30; q?gQ
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privateint pageSize = PAGESIZE; *$*nY [/5
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privateList items; o} bj!h]N
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privateint totalCount; @et3}-c
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privateint[] indexes = newint[0]; :&\E\9
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privateint startIndex = 0; T`(;;%
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public PaginationSupport(List items, int eO"\UDBV
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totalCount){ 'J&@jp
setPageSize(PAGESIZE); x u\/]f)
setTotalCount(totalCount); Kuzy&NI^w
setItems(items); l[!C-Tq
setStartIndex(0); &<[]X@ bY
} `Q!FMv6Y^
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public PaginationSupport(List items, int ?><
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totalCount, int startIndex){ @)!1#^(}%
setPageSize(PAGESIZE); ]pucv!
setTotalCount(totalCount); h&^/, G
setItems(items); )H=[NB6J8
setStartIndex(startIndex); u3ri6Y`
} wft:eQ
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public PaginationSupport(List items, int PPIG?fK)
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totalCount, int pageSize, int startIndex){ lk *QV
setPageSize(pageSize); +{l3#Y
setTotalCount(totalCount); z|4@nqqX
setItems(items); >GF(.:7
setStartIndex(startIndex); $=6kh+n@
} EJSgTtp2
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publicList getItems(){ =[CS2VQ'
return items; hH@o|!y
} <:_]Yl
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publicvoid setItems(List items){ u/c~PxC
this.items = items; p|O-I&Xd
} !h~#L"z
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publicint getPageSize(){ )jQe K
return pageSize;
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} ?28G6T]/?d
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publicvoid setPageSize(int pageSize){ ^9m]KEucd7
this.pageSize = pageSize; Ee?K|_\${
} 'E6gEJ
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publicint getTotalCount(){ ?@uK s4
return totalCount;
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} [3;Y:&D
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publicvoid setTotalCount(int totalCount){ uEi.nSp)S
if(totalCount > 0){ CSg5i&A=
this.totalCount = totalCount; m{=~|I
int count = totalCount / :!it7vZ
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pageSize; RSVN(-wIi)
if(totalCount % pageSize > 0) !j\&BAxTEk
count++; {bsr
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indexes = newint[count]; H_nOE(i<z
for(int i = 0; i < count; i++){ sp]y! zb"5
indexes = pageSize * %X-&yGY
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} JbD)}(G;
}else{ Vm%ux>}
this.totalCount = 0; kjYO0!C
} 6W#F Ss~
} tFP;CW!E
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publicint[] getIndexes(){ /JY ph^3][
return indexes; ^eT>R,aB
} NBR'^6
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publicvoid setIndexes(int[] indexes){ -,CndRKx
this.indexes = indexes; {]^%?]e
} v lnUN
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publicint getStartIndex(){ ,i((;/O6
return startIndex; j*lWi0Z-
} 0$dNrq
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publicvoid setStartIndex(int startIndex){ .6-o?=5
if(totalCount <= 0) K#pt8Q
this.startIndex = 0; %!/liS
elseif(startIndex >= totalCount) G&@RLht
this.startIndex = indexes vh{1u
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[indexes.length - 1]; 3<Y;mA=hw
elseif(startIndex < 0) sn-+F%[
this.startIndex = 0; :usBeho
else{ IXk'?9
this.startIndex = indexes [tw<TV"\
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[startIndex / pageSize]; 9'L0Al~L
} Q
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} f$*9J
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publicint getNextIndex(){ z\ $>k_
int nextIndex = getStartIndex() + gJfL$S'w
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pageSize; -bX.4+U
if(nextIndex >= totalCount) -(,6w?
return getStartIndex(); {mr)n3
else JM4`k8mM
return nextIndex; )C0X]?
}
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publicint getPreviousIndex(){ hp%Pg &
int previousIndex = getStartIndex() - lcJumV=%>
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pageSize; ,]N%(>ot
if(previousIndex < 0) >knR>96
return0; G:s:NXy^
else Tk=3"y+u[
return previousIndex; FQ ^^6Rl
} _BA_lkN+D
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} |*| a~t
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抽象业务类 OmuZ0@.
java代码: cr;`0
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/** 1:Gd{z
* Created on 2005-7-12 5"]2@@b4
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package com.javaeye.common.business; )Ea_:C'
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import java.io.Serializable; W3j|%
import java.util.List; l[0P*(I,
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import org.hibernate.Criteria; u(a&x|WY
import org.hibernate.HibernateException; c<x6_H6[8
import org.hibernate.Session; HcUz2Rm5XP
import org.hibernate.criterion.DetachedCriteria; ~7H.<kJt
import org.hibernate.criterion.Projections; _cs9R%
import \r9%;?f
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org.springframework.orm.hibernate3.HibernateCallback; #I wB
import /Day5\Q#
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org.springframework.orm.hibernate3.support.HibernateDaoS ?b$zuJ]
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upport; pU'sADC
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import com.javaeye.common.util.PaginationSupport;
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public abstract class AbstractManager extends $yK!Q)e:
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HibernateDaoSupport { d9( Sj?
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privateboolean cacheQueries = false; ;a)\5Uy
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privateString queryCacheRegion; F}[;ytmUS
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publicvoid setCacheQueries(boolean K0@7/*%
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cacheQueries){ JOq<lb=
this.cacheQueries = cacheQueries; Q^Z}Y~.
} [SvwJIJJ
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publicvoid setQueryCacheRegion(String .e+UgCwi
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queryCacheRegion){ KYW1<Wcp
this.queryCacheRegion = Q~{@3<yEI
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queryCacheRegion; {`zF{AW8q
} sn#h=,*4`
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publicvoid save(finalObject entity){ Q7%#3ML
getHibernateTemplate().save(entity); ::` wx@
} 0E[Se|!
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publicvoid persist(finalObject entity){ ^)pY2t<^
getHibernateTemplate().save(entity); +60;z4y}w
} rXX|?9'
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publicvoid update(finalObject entity){ z\5Nni/~6D
getHibernateTemplate().update(entity); 0wcWDE
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} Q[KR,k
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publicvoid delete(finalObject entity){ }YO}LQ-|
getHibernateTemplate().delete(entity); w}b+vh^3Wy
} PEl]HI_H
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publicObject load(finalClass entity, 7mNskb|
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finalSerializable id){ M3kE91
return getHibernateTemplate().load 20)Il:x
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(entity, id); [\yI<^_a
} d:''qgz`
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publicObject get(finalClass entity, [_-K
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finalSerializable id){ @=c='V]
return getHibernateTemplate().get Nb1lawC
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(entity, id); /K<Nlxcm
} _C\b,D}p
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publicList findAll(finalClass entity){ OHo0W)XUU
return getHibernateTemplate().find("from s qKkTG3
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" + entity.getName()); R[;Z<K\Nn?
}
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publicList findByNamedQuery(finalString NM Ajt>t
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namedQuery){ 8hg(6 XUG
return getHibernateTemplate
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().findByNamedQuery(namedQuery); 5P!17.W'u
} IM/\t!*7
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publicList findByNamedQuery(finalString query, kuaov3Ui
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finalObject parameter){ 0*/~9n-Vl
return getHibernateTemplate ;}qCIyuO]
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().findByNamedQuery(query, parameter); ijB,Q>TgO
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publicList findByNamedQuery(finalString query, 2srz) xEe
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finalObject[] parameters){ D 4wB
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return getHibernateTemplate SccU@3.X~
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().findByNamedQuery(query, parameters); s7?kU3y=s
} ~6nQ-
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publicList find(finalString query){ GZw<Y+/V"5
return getHibernateTemplate().find wkGF&U
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(query); Yq_zlxd%F
} ;ORy&H aKl
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publicList find(finalString query, finalObject oCrn
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parameter){ "n:9JqPb
return getHibernateTemplate().find fomkwN
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(query, parameter); khfE<<