Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 }6zbT-i
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 qojXrSb"y
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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 NC23Z0y
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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 )6oGF>o>
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分页支持类: U..<iNQE5
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java代码: `H%G3M0a
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package com.javaeye.common.util; lP<I|O=z
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import java.util.List; >wON\N0V_
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publicclass PaginationSupport { E0f{iO;}
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publicfinalstaticint PAGESIZE = 30; y2Bh?>pg
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privateint pageSize = PAGESIZE; Pi6C/$
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privateList items; "cUg>a3
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privateint totalCount; 1JS2SxF
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privateint[] indexes = newint[0]; OKue" p
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privateint startIndex = 0; |H)cuZ
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public PaginationSupport(List items, int /Bv#) -5
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totalCount){ 5N/Lk>p1u
setPageSize(PAGESIZE); I*)VZW
setTotalCount(totalCount); >9K//co"of
setItems(items); n]? WCG}cd
setStartIndex(0); S q@H
} w<nv!e?
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public PaginationSupport(List items, int ISqfU]>[
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totalCount, int startIndex){ $~u.Wq
setPageSize(PAGESIZE); mf$j03tu
setTotalCount(totalCount); YcM;S
setItems(items); +&v\
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setStartIndex(startIndex); 0{rx.C7|
} h SV@TL
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public PaginationSupport(List items, int a+z2Zd!u\x
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totalCount, int pageSize, int startIndex){ 2:^njqX
setPageSize(pageSize); ? Nj)6_&
setTotalCount(totalCount); !p.^ITM3S
setItems(items); APBK9ky
setStartIndex(startIndex); :h5J r8
} pA4 ,@O
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publicList getItems(){ &y.dmW
return items; a-0cN 9
} C8b''9t.
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publicvoid setItems(List items){ +oy*Kxs7
this.items = items; 3(_!`0#F%
} )iE"Tl
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publicint getPageSize(){ T_hV%
return pageSize; !C&%T]
} Z5)eREi=
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publicvoid setPageSize(int pageSize){ .[pUuVq]
this.pageSize = pageSize; F'W>
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} Hcv u7uD
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publicint getTotalCount(){ U6j/BJT"
return totalCount; ^X1wI9V
} v <h;Di@
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publicvoid setTotalCount(int totalCount){ zQfkMa.
if(totalCount > 0){ qd2xb8r
this.totalCount = totalCount; i57(
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int count = totalCount / 3:`XG2'
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pageSize; /^<en(0=P
if(totalCount % pageSize > 0) !D:k!
count++; F@SG((`
indexes = newint[count]; *@M3p}',M
for(int i = 0; i < count; i++){ %J P!{mqj
indexes = pageSize * Da,Tav%b
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} \ lr/;-zP
}else{ __\P`S_
this.totalCount = 0; h7W}OF_=y
} 3E|;r
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} Wc4vCVw
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publicint[] getIndexes(){ 'D6
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return indexes; qo;)X0N
} ~[18q+,
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publicvoid setIndexes(int[] indexes){ &YX6"S_B
this.indexes = indexes; zixEMi[8
} L#j/0IHD
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publicint getStartIndex(){ &HF]\`RNr
return startIndex; _}=E^/;(
} i^g~~h
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publicvoid setStartIndex(int startIndex){ &9P<qU^N)
if(totalCount <= 0) a@W7<9fY;
this.startIndex = 0; OlGR<X
elseif(startIndex >= totalCount) r%-n*_?.s
this.startIndex = indexes TA;,>f*
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[indexes.length - 1]; ntH T
elseif(startIndex < 0) " i`8l.Lc
this.startIndex = 0; &oN/_7y
else{ fM":f|
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this.startIndex = indexes P|}\/}{`
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[startIndex / pageSize]; *zQOJsg"e
} l,bZG3,6
} wRbw
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publicint getNextIndex(){ l2/@<0P
int nextIndex = getStartIndex() + jgRCs.6
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pageSize; (,tHL
if(nextIndex >= totalCount) VkXn8J
return getStartIndex(); ~CFMIQ et
else Bz:0L1@,4a
return nextIndex; K%2I
} NsmVd dj
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publicint getPreviousIndex(){ {3 o%d:
int previousIndex = getStartIndex() - H m8y]>$
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pageSize; iS0 5YW
if(previousIndex < 0) A2_Ls;]
return0; U.Hdbmix
else fI}c 71b`
return previousIndex; B\zoJg&7(
} @_O3&ZK
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} ..$>7y}
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抽象业务类 +$~8)95<B
java代码: ZgBckb
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/** DpNX66O
* Created on 2005-7-12 O3xz|&xY&
*/ iiN?\OO^~
package com.javaeye.common.business; sL
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import java.io.Serializable; $Sw,hb
import java.util.List; .f%vDBJS
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import org.hibernate.Criteria; F*!gzKZ"
import org.hibernate.HibernateException; \7DCwu[0M
import org.hibernate.Session; gix>DHq$k
import org.hibernate.criterion.DetachedCriteria; Xj;2h{#s
import org.hibernate.criterion.Projections; +gNX7xuY
import )|:8zDuJ
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org.springframework.orm.hibernate3.HibernateCallback; 3Tw%W0q
import S5/p=H:
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org.springframework.orm.hibernate3.support.HibernateDaoS un&>
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upport; X&,N}9>B
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import com.javaeye.common.util.PaginationSupport; `.`FgaJ
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public abstract class AbstractManager extends ZmP1C`>
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HibernateDaoSupport { VLx T"]f
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privateboolean cacheQueries = false; 8_Jj+
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privateString queryCacheRegion; Tz2x9b\82
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publicvoid setCacheQueries(boolean !,R
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cacheQueries){ !8Y3V/)NU
this.cacheQueries = cacheQueries; (E IR z>
} i
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publicvoid setQueryCacheRegion(String 3U>S]#5}
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queryCacheRegion){ sB8p(
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this.queryCacheRegion = %'kX"}N/
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queryCacheRegion; sI4QI\*4
} wNbTM.@
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publicvoid save(finalObject entity){ g\qX7nIH?
getHibernateTemplate().save(entity); jigbeHRy
} y]MWd#U
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publicvoid persist(finalObject entity){ ^Jn|*?+l
getHibernateTemplate().save(entity); <G&WYk%u*
} ~V!EtZG$
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publicvoid update(finalObject entity){ R:BBF9sK?
getHibernateTemplate().update(entity); VDPxue
} H]U"+52h
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publicvoid delete(finalObject entity){ j#CuR7m
getHibernateTemplate().delete(entity); ZIDFF
} rx{#+iw
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publicObject load(finalClass entity, F61+n!%8
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finalSerializable id){ p-a]"l+L
return getHibernateTemplate().load _pJX1_vD
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(entity, id); *P&OxVz
} ?Z5$0-g'hU
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publicObject get(finalClass entity, MG;4M>H
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finalSerializable id){ p$B)^S%0i
return getHibernateTemplate().get ws#hhW3qK
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(entity, id); h)"'YzCt
} zj%cd;
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publicList findAll(finalClass entity){ <JG Yr 4V
return getHibernateTemplate().find("from H+nr5!`kz
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" + entity.getName()); zf}rfn
} u|(aS^H=q
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publicList findByNamedQuery(finalString (69kvA&|q
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namedQuery){ (2n3exx
return getHibernateTemplate o@Dk%LxP
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().findByNamedQuery(namedQuery); %`bLmfm
} ;<86P3S
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publicList findByNamedQuery(finalString query, ~_(!}V
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finalObject parameter){
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return getHibernateTemplate %
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().findByNamedQuery(query, parameter); w;@`Yi.WQ
} goG]WGVr
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publicList findByNamedQuery(finalString query, fN~8L}!l
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finalObject[] parameters){ Vx0MG{vG1
return getHibernateTemplate ER0TY,
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().findByNamedQuery(query, parameters); FA5k45wL
} F^4*|g
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publicList find(finalString query){ fJ,8g/f8
return getHibernateTemplate().find J+-,^8)
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(query); 4yJ01s
} <e@I1iL37y
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publicList find(finalString query, finalObject 2n<qAl$t
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parameter){ &