Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 SU6Aq?`@
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 *"4l}&
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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 WK@<#
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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 RCxwiZaf33
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分页支持类: ll- KK`Ka
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java代码: &
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package com.javaeye.common.util; 4x3 _8/=
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import java.util.List; i1A<0W|
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publicclass PaginationSupport { fakad#O
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publicfinalstaticint PAGESIZE = 30; wu &lG!#
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privateint pageSize = PAGESIZE; *!{&n*N
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privateList items; bZK^q B
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privateint totalCount; wzJdS}Yy!y
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privateint[] indexes = newint[0]; m/(/!MVy
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privateint startIndex = 0; :i@
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public PaginationSupport(List items, int Dhfor+Epy
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totalCount){ {XUSw8W'
setPageSize(PAGESIZE); kBk2mMZ
setTotalCount(totalCount); oDJ
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setItems(items); YnW9uy5
setStartIndex(0); mFxt +\
} <F"G~.^ *s
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public PaginationSupport(List items, int [p}~M-$V8Y
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totalCount, int startIndex){ .tyV=B:h
setPageSize(PAGESIZE); </?ef&
setTotalCount(totalCount); 8G|?R#&
setItems(items); m({q<&]Qp
setStartIndex(startIndex); Wg,@S*x(
} d6-q"
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public PaginationSupport(List items, int }d iE'
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totalCount, int pageSize, int startIndex){ lN{>.q@V`r
setPageSize(pageSize); +aPe)U<t
setTotalCount(totalCount); N'$P(
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setItems(items); 5MZv!N
setStartIndex(startIndex); o{n#f?EA
} ~ _tK.m3
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publicList getItems(){ !?Y71:_!
return items; {4f%UnSz(
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publicvoid setItems(List items){ |TkicgeS
this.items = items; !r/~D |
} G\,B*$3
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publicint getPageSize(){ 9F6dKPN:
return pageSize; zb02\xvf
} "wKJ8
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publicvoid setPageSize(int pageSize){ QtWe,+WWV
this.pageSize = pageSize; Aw4)=-LKO
} oWi#?'
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publicint getTotalCount(){ HU4h.Lm
return totalCount; u|u)8;'9(
} \yxGE+~P
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publicvoid setTotalCount(int totalCount){ t}pYSSTz
if(totalCount > 0){ Gv
}
this.totalCount = totalCount; },Grg~l
int count = totalCount / ^T1caVb|>
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pageSize; ,1JQjsR
if(totalCount % pageSize > 0) B9cWxe4R#
count++; t7xJ"
indexes = newint[count]; /d Ua
for(int i = 0; i < count; i++){ ) .' + {
indexes = pageSize * <mTo54g
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} P6ka'!z
}else{ ]~f-8!$$R
this.totalCount = 0; o8%o68py
} MTgf.
} ?:l:fS0:{
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publicint[] getIndexes(){ 2bw.mp&v1
return indexes; ;'Z"CbS+
} -4F}I3I
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publicvoid setIndexes(int[] indexes){ D(dV{^} 9
this.indexes = indexes; oY,{9H37b
} >qO l1]uF
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publicint getStartIndex(){ v@s"*E/PF7
return startIndex; ; 4/ n~
} Jcs
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publicvoid setStartIndex(int startIndex){ FB>P39u
if(totalCount <= 0) Xa$%`
this.startIndex = 0; ~Hj c?*
elseif(startIndex >= totalCount) ';D>Z?l
this.startIndex = indexes l^}5PHLd
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[indexes.length - 1]; SNSoV3|k-
elseif(startIndex < 0) wq1s#ag<
this.startIndex = 0; `w@z
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else{ 5bI4'
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this.startIndex = indexes X(DP=C}v9
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[startIndex / pageSize]; 7X>@r"9<
} X`eX+9
} dBN:
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publicint getNextIndex(){ Ep')@7^n
int nextIndex = getStartIndex() + $`t2SD
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pageSize; ?@Tsd@s~r
if(nextIndex >= totalCount) Yc3\
return getStartIndex(); gQY`qz
else _ |HA\!
return nextIndex; $`0,N_C<}
} _25PyG
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publicint getPreviousIndex(){ BZXee>3"
int previousIndex = getStartIndex() - Pmr'W\aIR
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pageSize; r4K%dx-t
if(previousIndex < 0) ATmyoN2@>
return0; ,5 3`t
else B/3xV:Gy
return previousIndex; ]lE5^<<
} aSHN*tP%y
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} \lDh"
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抽象业务类 HFz;"s3lWM
java代码: 5,|{|/
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/** qk0cf~gz
* Created on 2005-7-12 c@4$)68
*/ h_\W7xt
package com.javaeye.common.business; Lc-WfzT
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import java.io.Serializable; -ntQqHs
import java.util.List; /~+Fzz
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import org.hibernate.Criteria; ?\X9Ei
import org.hibernate.HibernateException; l%yQ{loTh
import org.hibernate.Session; f&] !;)
import org.hibernate.criterion.DetachedCriteria; "uyr@u0b
import org.hibernate.criterion.Projections; .=hVto[QC
import _Vc4F_
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org.springframework.orm.hibernate3.HibernateCallback; ;MlPP)*k
import ;
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org.springframework.orm.hibernate3.support.HibernateDaoS
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upport; k%s,(2)30
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import com.javaeye.common.util.PaginationSupport; Z
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public abstract class AbstractManager extends 'S#^70kt
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HibernateDaoSupport { 2IkyC`
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privateboolean cacheQueries = false; :kjs: 6f]
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privateString queryCacheRegion; cVmF'g
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publicvoid setCacheQueries(boolean 2%H_%Zu9
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cacheQueries){ *r!qxiY=
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this.cacheQueries = cacheQueries; 3z"%ht~;
} T[cJ
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publicvoid setQueryCacheRegion(String ~)ysEZl
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queryCacheRegion){ 4 .(5m\s!
this.queryCacheRegion = ~!%G2E!
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