Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 Y9SaYSX
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 L=_
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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 %7S{g
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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 N hY`_?)
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分页支持类: oG$OZTc
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java代码: /*G-\|
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package com.javaeye.common.util; MwHxn%
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import java.util.List; cD5N'3
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publicclass PaginationSupport { mb?r{WCi
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publicfinalstaticint PAGESIZE = 30; 2)\gIMt%
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privateint pageSize = PAGESIZE; sLOkLz"x
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privateList items; ;39~G T
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privateint totalCount; Htm;N2$d
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privateint[] indexes = newint[0]; 9$WA<1PK+
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privateint startIndex = 0; +'"NKZ.>TT
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public PaginationSupport(List items, int 89YG
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totalCount){ Qm)c!
setPageSize(PAGESIZE); S^:7V[=EgI
setTotalCount(totalCount); =KW~k7TaN
setItems(items); 3>#io^35
setStartIndex(0); Jz@2?wSp
} ,c&%/"i:w
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public PaginationSupport(List items, int [+wLy3_
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totalCount, int startIndex){ Ro.br:'Bw
setPageSize(PAGESIZE); P_F0lO
setTotalCount(totalCount); }Ryrd!3bY
setItems(items); [l*;+N+
setStartIndex(startIndex); Ewa/6=]LA
} &`2$,zX#
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public PaginationSupport(List items, int _X~xfmU
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totalCount, int pageSize, int startIndex){ bcUa'ZfN<
setPageSize(pageSize); }PX8#C_P
setTotalCount(totalCount); M6lNdK
setItems(items); @^t1SPp
setStartIndex(startIndex); bE%*ZB
} We@wN:
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publicList getItems(){ *XkgwJq
return items; 'R
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} qpX`ZY^
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publicvoid setItems(List items){ 3Lm7{s?=Z-
this.items = items; u
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} IQyw>_~]
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publicint getPageSize(){ a\xf\$Ym
return pageSize; DoFF<LXBt
} W0LJXp-v
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publicvoid setPageSize(int pageSize){ gCZm7dgo
this.pageSize = pageSize; NI2-*G_M
} uX8G<7O^
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publicint getTotalCount(){ Os[50j!4>
return totalCount; | W<jN
} roNs~]6
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publicvoid setTotalCount(int totalCount){ ]DK.4\^
if(totalCount > 0){
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this.totalCount = totalCount; |D~#9
int count = totalCount / [g@.dr3t
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pageSize; ADT8A."R[
if(totalCount % pageSize > 0) #RWmP$+#=
count++; K j6@=
indexes = newint[count]; R[!%d6jDE
for(int i = 0; i < count; i++){ Ze3sc$fG2
indexes = pageSize * $c];&)7q
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} a!mdL|eA@
}else{ ,Ad{k
this.totalCount = 0; VcORRUp
} HC
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}
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publicint[] getIndexes(){ O/lu0acI
return indexes; o(Q='kK
} U>a~V"5,u
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publicvoid setIndexes(int[] indexes){ BF(Kaf;<t.
this.indexes = indexes; SAUG+{Uq
} dk@iAL*v
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publicint getStartIndex(){ #QKgY7
return startIndex; [OwrIL
} I#:,!vjn
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publicvoid setStartIndex(int startIndex){ Dlx-mm_
if(totalCount <= 0) $m0-IyXcv
this.startIndex = 0; ntD8:%m
elseif(startIndex >= totalCount) K~jN"ev
this.startIndex = indexes E)%r}4u>
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[indexes.length - 1]; nm
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elseif(startIndex < 0) 3.D|xE]g
this.startIndex = 0; --g?`4
else{ l~$Od jf
this.startIndex = indexes #yR@.&P
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[startIndex / pageSize]; XO"BEj<x
} ziG]BZ
} ~MZ.988:<
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publicint getNextIndex(){ IK|W^hH\8
int nextIndex = getStartIndex() + ZN-5W|' O
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pageSize; ~n9-
if(nextIndex >= totalCount) 1"
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return getStartIndex(); Y%YPR=j~ &
else 1/vcj~|)t
return nextIndex; e(EXQP2P>
} Jk=d5B
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publicint getPreviousIndex(){ )jaNFJ
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int previousIndex = getStartIndex() - O<`\9
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pageSize; !_LRuqQ?"
if(previousIndex < 0) D(^ |'1
return0; vV /fTO
else `yWWX.`
return previousIndex; ^*+-0b;[G
} f*GdHUZ*
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} h&6t.2<e
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抽象业务类 5ofsJ!b'
java代码: q
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/** b}5hqIy
* Created on 2005-7-12 *XSHzoT*
*/ G~|Z(}H
package com.javaeye.common.business; ]2'{W]m
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import java.io.Serializable; @Z%I g
import java.util.List; h?2 :'Vu]
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import org.hibernate.Criteria; <aEY=IF4
import org.hibernate.HibernateException; *kWrF* )J
import org.hibernate.Session; >aV
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import org.hibernate.criterion.DetachedCriteria; ^q
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import org.hibernate.criterion.Projections; (vqI@fB';u
import ~pj/_@S@x
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org.springframework.orm.hibernate3.HibernateCallback; 4?F7% ^vr
import y|E{]
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org.springframework.orm.hibernate3.support.HibernateDaoS \IG"Te
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upport; ~}F$1;t0
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import com.javaeye.common.util.PaginationSupport; kqie|_y
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public abstract class AbstractManager extends 6Y(Vs>
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HibernateDaoSupport { *1fZcw'C.
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privateboolean cacheQueries = false; 3gzcpFNqX
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privateString queryCacheRegion; yvz2eAXa
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publicvoid setCacheQueries(boolean ,
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cacheQueries){ msiftP.
this.cacheQueries = cacheQueries; L?gak@E
} *K1GX
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publicvoid setQueryCacheRegion(String yxU??#v|g
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queryCacheRegion){ 09>lx$
this.queryCacheRegion = rM?ox
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queryCacheRegion; j,c8_;X!
} p|b&hgA
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publicvoid save(finalObject entity){ t6H9Q>*
getHibernateTemplate().save(entity); !\%0O`b^4
} 8=h$6=1S
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publicvoid persist(finalObject entity){ 7>Oa, \
getHibernateTemplate().save(entity); |:?JSi0
} (Mw<E<f
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publicvoid update(finalObject entity){ &J~%Nt
getHibernateTemplate().update(entity); W~&PGmRI
} ihrl!A5
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