Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 yHYsZ,GE
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 oE@a'*.\
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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 'B$yo]
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 _1X!EH"
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分页支持类: i%iL[id:w
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java代码: ^^u5*n+5
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package com.javaeye.common.util; ]2A^1Del
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import java.util.List; >fG3K`
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publicclass PaginationSupport { 2YL?,uLS
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publicfinalstaticint PAGESIZE = 30; KRbvj
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privateint pageSize = PAGESIZE; >dXGee>'M
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privateList items; 2y\E[j A
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privateint totalCount; d7^}tM
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privateint[] indexes = newint[0]; &N9
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privateint startIndex = 0; Ep_HcX`
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public PaginationSupport(List items, int
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totalCount){ @)+AaC#-
setPageSize(PAGESIZE); 1q\\5A<V
setTotalCount(totalCount); 7O2/z:$f
setItems(items); <\y@*fg+
setStartIndex(0); ,]C;sN%~}
} ,oe <
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public PaginationSupport(List items, int @&!ZZ
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totalCount, int startIndex){ )6MfRw
setPageSize(PAGESIZE); ?PxP% $hS
setTotalCount(totalCount); hF?1y `20
setItems(items); 1#g2A0U,
setStartIndex(startIndex); <V'@ks%
} *-WpZGh
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public PaginationSupport(List items, int g9pZ\$J&
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totalCount, int pageSize, int startIndex){ OnziG+ak
setPageSize(pageSize); $p8xEcQdU#
setTotalCount(totalCount); T~?Ff|qFC
setItems(items); ' {OgN}'{
setStartIndex(startIndex); T"Y+m-<%
} G5_=H,Vmd
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publicList getItems(){ tIi&;tw]
return items; # +>oZWVc
} ldcqe$7,
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publicvoid setItems(List items){ S\EyCi+
this.items = items; mUC)gA/
} PQt")[
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publicint getPageSize(){ SGRp3,1\4%
return pageSize; f)rq%N &
} KkyVSoD\
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publicvoid setPageSize(int pageSize){ YaqR[F
this.pageSize = pageSize; k}CVQ@nd
} @IKYh{j4
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publicint getTotalCount(){ ssA`I<p #
return totalCount; ,,.QfUj/&
} 6-
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publicvoid setTotalCount(int totalCount){ !TH)
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if(totalCount > 0){ 3NqB
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this.totalCount = totalCount; yzn%<H~
int count = totalCount / GVr1`l
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pageSize; /HEw-M9z
if(totalCount % pageSize > 0) j;Gtu
count++; N% B>M7-=
indexes = newint[count]; wu6;.xTLl
for(int i = 0; i < count; i++){ 8rGgF]F
indexes = pageSize * g-k|>-h
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} +E+p"7
}else{ rKc9b<Ir
this.totalCount = 0; l30EKoul)
} Wi<m{.%\E
} =s{> Fsm1
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publicint[] getIndexes(){ (m}'4et~L
return indexes; :kV#y
} }#+^{P3 ;
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publicvoid setIndexes(int[] indexes){ QL/(72K
this.indexes = indexes; nF:4}qy\
} 4@gG<QJW
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publicint getStartIndex(){ Vt~{Gu-Y
return startIndex; }6~hEc*/"
} M0"_^?
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publicvoid setStartIndex(int startIndex){ Qljpx?E
if(totalCount <= 0) V &T~zh1
this.startIndex = 0; m7V/zne
elseif(startIndex >= totalCount) w.o@7|B1N
this.startIndex = indexes W
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[indexes.length - 1]; ^
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elseif(startIndex < 0) #%2rP'He
this.startIndex = 0; 5;WH:XM
else{ 6_;icpN]
this.startIndex = indexes MchA{p&Ol
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[startIndex / pageSize]; I
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} a-tmq]]E
} @1j
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publicint getNextIndex(){
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int nextIndex = getStartIndex() + 2tO,dx
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pageSize; DCa^
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if(nextIndex >= totalCount) -i|}m++
return getStartIndex(); cVpp-Z|s8
else IP pN@
return nextIndex; y.k~Y0
} 4J?0bZ
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publicint getPreviousIndex(){ _LnpnL:
int previousIndex = getStartIndex() - . Efk*
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pageSize; v1JzP#
if(previousIndex < 0) M_f:A
return0; c6]U E@A
else T>Z<]s
return previousIndex; 0mVNQxHI
} qR{=pR
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} F(n$
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抽象业务类 C )
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java代码: 0+ '&`Q!u
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/** Zi
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* Created on 2005-7-12 7]bGc
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*/ b|DdG/O
package com.javaeye.common.business; 00y!K
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import java.io.Serializable; q`-N7 ,$T
import java.util.List; mJnIwdW*
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import org.hibernate.Criteria; ;'K5J9k
import org.hibernate.HibernateException; gf@:R'$:+
import org.hibernate.Session; WH} y"W
import org.hibernate.criterion.DetachedCriteria; ]m<$}
import org.hibernate.criterion.Projections; I236RIq
import
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org.springframework.orm.hibernate3.HibernateCallback; ?l )[7LR4
import !pW0qX\1n
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org.springframework.orm.hibernate3.support.HibernateDaoS }0z)5c
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upport; %> eiAB_b
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import com.javaeye.common.util.PaginationSupport; j^JPZ{ej?
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public abstract class AbstractManager extends n84|{l581
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HibernateDaoSupport { \2$|Ei7
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privateboolean cacheQueries = false; KpGhQdR#
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privateString queryCacheRegion; GefTdO.&
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publicvoid setCacheQueries(boolean r19
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cacheQueries){ abj Q)=u
this.cacheQueries = cacheQueries; 0h_|t-9j
} KRzAy)8
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publicvoid setQueryCacheRegion(String %u'ukcL7
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queryCacheRegion){ 0,")C5j
this.queryCacheRegion = wHy!CP%
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queryCacheRegion; &QgR*,5eo
} }}~ |!8
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publicvoid save(finalObject entity){ :o3N;*o>)0
getHibernateTemplate().save(entity); l_p2Riv
} ,J@
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publicvoid persist(finalObject entity){ #6=
getHibernateTemplate().save(entity); {wKB;?fUvk
} { <