Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 AJ-~F>gn
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 3?oj46gP
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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 gSu3\keF
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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 'aW<C>
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分页支持类: ;yK:.Vg
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java代码: Gn%gSH/
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package com.javaeye.common.util; _w>9Z>PR
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import java.util.List; Q!dNJQpb
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publicclass PaginationSupport { Bn_@R`
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publicfinalstaticint PAGESIZE = 30; +A,t9 3:k
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privateint pageSize = PAGESIZE; ^atBf![
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privateList items; ^ 04|tda
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privateint totalCount; Q.G6y,KR
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privateint[] indexes = newint[0]; L
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privateint startIndex = 0; *qm@;!C
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public PaginationSupport(List items, int mMEa*9P
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totalCount){ 13nXvYo'
setPageSize(PAGESIZE); "m:4e`_dz
setTotalCount(totalCount); cCH2=v4hU
setItems(items); W} U-u{Z
setStartIndex(0); W+0VrH
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} e-#!3j!'
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public PaginationSupport(List items, int s$ 2@ |;
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totalCount, int startIndex){ Sy<s/x^`
setPageSize(PAGESIZE); 4W''j[Y/
setTotalCount(totalCount); Ih.6"ISK}
setItems(items); " '/$ZpY
setStartIndex(startIndex); ;9R;D,Gk!
} Jh'\ nDz@e
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public PaginationSupport(List items, int
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totalCount, int pageSize, int startIndex){ bLysUj5[5
setPageSize(pageSize); 2$O@T]
setTotalCount(totalCount); ?][2J
setItems(items); 93npzpge
setStartIndex(startIndex); ?>W4*8(
} 6Q._zk
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publicList getItems(){ iPxhDn<B
return items; 3S'juHTe
} x`vIY-DS
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publicvoid setItems(List items){ v@0lTl_
this.items = items; =U5lPsiv,3
} ;_lEu" -
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publicint getPageSize(){ t4H@ZvAH0
return pageSize; |QvG;{!
} {zc<:^r^
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publicvoid setPageSize(int pageSize){ _ s]=g
this.pageSize = pageSize; 0NB6S&lI^k
} lr[a~ca\
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publicint getTotalCount(){ oO4
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return totalCount; l*|^mx^Q
} !ACWv*pW
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publicvoid setTotalCount(int totalCount){ Xp=Y<`dX
if(totalCount > 0){ :A,V<Es}I"
this.totalCount = totalCount; (c<Krc
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int count = totalCount / 2@
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pageSize; /]Fs3uf
if(totalCount % pageSize > 0) #cBt@SEL'
count++; -BNlZgk-^
indexes = newint[count]; ,Z;z}{.hq
for(int i = 0; i < count; i++){ an 3"y6.8
indexes = pageSize * @83h/Wcxd
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} {g2cm'hD
}else{ IPU'M*|Q
this.totalCount = 0; .-;K$'YG
} 6}.B2f9
} Ds$8$1=L=k
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publicint[] getIndexes(){ zn T85#]\@
return indexes; U
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} HM])m>KeT
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publicvoid setIndexes(int[] indexes){ kyQ%qBv ^
this.indexes = indexes; uD&!]E3
} \fphM6([RK
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publicint getStartIndex(){ )>atoA
return startIndex; aXyu%<@k
} @^y/V@lDm
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publicvoid setStartIndex(int startIndex){ GqI^$5?
if(totalCount <= 0) 2hV#3i
this.startIndex = 0; {4 !%'~
elseif(startIndex >= totalCount) 22\Buk}?
this.startIndex = indexes AC=cz!3iB
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[indexes.length - 1]; 0Ng6Xg(QHc
elseif(startIndex < 0) Bo?uwi
this.startIndex = 0; CJ_X:Frj)
else{ ~4[2{M.0>@
this.startIndex = indexes v.)'be*u
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[startIndex / pageSize]; Y;je ::"
} i+yqsYKO
} :b;2iBVB
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publicint getNextIndex(){ zh'TR$+\hO
int nextIndex = getStartIndex() +
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pageSize; hA?j"y0?
if(nextIndex >= totalCount) sJX/YGHt
return getStartIndex(); >U^AIaW
else !arcQ:T@G
return nextIndex; YWeEvo(,=
} +~=>72/r
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publicint getPreviousIndex(){ FyYQ4ov0&o
int previousIndex = getStartIndex() -
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pageSize; |v8 >22y
if(previousIndex < 0) 9u1)Kr=e
return0; )_b#c+
else yw5MlZ4P=
return previousIndex; 4hztYOhJ{
} epm
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} +&tY&dQQB
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抽象业务类 ;u,%an<(
java代码: |hehROUn
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/** ^LTLyt)/
* Created on 2005-7-12 rx'},[b]3
*/ aZ2liR\QE
package com.javaeye.common.business; %,MCnu&Z
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import java.io.Serializable; F&;g<
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import java.util.List; dW<.
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import org.hibernate.Criteria; $} l0Nh'Eu
import org.hibernate.HibernateException; j DcE_55o
import org.hibernate.Session; b,7:=-D
import org.hibernate.criterion.DetachedCriteria; N{iBVl
import org.hibernate.criterion.Projections; 7*OO k"9
import 5?k_Q"~
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org.springframework.orm.hibernate3.HibernateCallback; HGB96,o f9
import 4XQ v
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org.springframework.orm.hibernate3.support.HibernateDaoS gGN[AqR
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upport; jfl7L"2
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import com.javaeye.common.util.PaginationSupport; u~Q0V J~
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public abstract class AbstractManager extends tQ'E"u1
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HibernateDaoSupport { %B3E9<9>U
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privateboolean cacheQueries = false; 88d0`6K-9
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privateString queryCacheRegion; H0
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publicvoid setCacheQueries(boolean V8NNIS
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cacheQueries){ u7fae$:&