Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 &_^*rD~
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 y[5P<:&s
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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 Q}f}Jf3P
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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 (7jB_ p%
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分页支持类: =UKR<@QrK
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java代码: AoOG[to7
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package com.javaeye.common.util; 6 r-n6#=
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import java.util.List; jUR#
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publicclass PaginationSupport { A"3&EuvU
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publicfinalstaticint PAGESIZE = 30; u+gXBU
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privateint pageSize = PAGESIZE; v0MOX>`s
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privateList items; 1 l*(8!_
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privateint totalCount; P$qkb|D,
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privateint[] indexes = newint[0]; 1o8"==n%
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privateint startIndex = 0; k42ur)pb
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public PaginationSupport(List items, int @SG="L
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totalCount){ \lakT_x
setPageSize(PAGESIZE); &?Z)V-1H
setTotalCount(totalCount); 2GKU9cV*`
setItems(items); -hR\Y2?
setStartIndex(0); ;I))gY-n
}
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public PaginationSupport(List items, int iai4$Y(%
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totalCount, int startIndex){ Hi"
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setPageSize(PAGESIZE);
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setTotalCount(totalCount); 6F&]Mk]V8
setItems(items); K2MNaB
setStartIndex(startIndex); iEgM~
} -+_aL4.
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public PaginationSupport(List items, int 4kF .
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totalCount, int pageSize, int startIndex){ ;AB ,:*
setPageSize(pageSize); 4NR5?s
setTotalCount(totalCount); 2xdJ(\JWM
setItems(items); Wk6&TrWlY
setStartIndex(startIndex); k8wi-z[dV
} 2/4x]i
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publicList getItems(){ F20-!b
return items; .-~%w
} $#JVI:
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publicvoid setItems(List items){ =LY^3TlDj
this.items = items; wvaIgy%z
} 9.#R?YP$
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publicint getPageSize(){ d4h(F,K7V
return pageSize; )[X!/KR90
} )bU")
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publicvoid setPageSize(int pageSize){ KP-z
this.pageSize = pageSize; -t'oW*kdL
} |Pl{Oo+
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publicint getTotalCount(){ XTaWd0Y
return totalCount; 4m!3P"$
} Xt*%"7yTp
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publicvoid setTotalCount(int totalCount){ +9rbQ?'
if(totalCount > 0){ 6U9Fa=%>}
this.totalCount = totalCount; ayz1i:Q|
int count = totalCount / |/\1nWD
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pageSize; =V]i?31[
if(totalCount % pageSize > 0) Q09~vFBg
count++; 58'y~Ou
indexes = newint[count]; H>X1(sh#}
for(int i = 0; i < count; i++){ 7tKft
indexes = pageSize * sZBO_](S
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} Mf13@XEo
}else{ K2`WcEe
this.totalCount = 0; <U`Nb) &
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} ^l9
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publicint[] getIndexes(){ E?D{/k,zZ
return indexes; FGhrf
} 0M2+?aKif
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publicvoid setIndexes(int[] indexes){ 5<?$/H|7T
this.indexes = indexes; b=\3N3OX
} n7.lF
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publicint getStartIndex(){ i j;'4GzQL
return startIndex; z( [ $,e\
} \1D,Kx;Cb
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publicvoid setStartIndex(int startIndex){ h,?Yw+#o"
if(totalCount <= 0) ;QD;5
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this.startIndex = 0; 1U9N8{xg9
elseif(startIndex >= totalCount) HTpd~W/\
this.startIndex = indexes 48rYs}
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[indexes.length - 1]; "E!p1
elseif(startIndex < 0) 8Kkr1}!wd
this.startIndex = 0; @5GP;3T
else{ BTtYlpN6
this.startIndex = indexes Cms"OkN
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[startIndex / pageSize]; Ps4A
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} oYx
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publicint getNextIndex(){ _Fy:3,(
int nextIndex = getStartIndex() + 30`H
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pageSize; uRhH_c-6C
if(nextIndex >= totalCount) S]@iS[|?
return getStartIndex(); .sMi"gg
else ~h|L;E"
return nextIndex; B%;+8]
} Yr0i9Qow
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publicint getPreviousIndex(){ f\w4F'^tj
int previousIndex = getStartIndex() - -bQvJ`iF
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pageSize; $R36`wk
if(previousIndex < 0) `o'sp9_3
return0; nwH|Hs riU
else 1uzfV)
return previousIndex; sM[c\Z]
} t2<(by!
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} xF0*q
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抽象业务类 u{G6xuPWf
java代码: '11h Iu=:
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/** wt,N<L
* Created on 2005-7-12
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*/ CKgyv%T5m:
package com.javaeye.common.business; 5@5="lNjS
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import java.io.Serializable; <h0ptCB
import java.util.List; %)]RM/e8
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import org.hibernate.Criteria; 8yl/!O,v
import org.hibernate.HibernateException; tJ3s#q6
import org.hibernate.Session; 2Z |kf9
import org.hibernate.criterion.DetachedCriteria; |3@]5f&
import org.hibernate.criterion.Projections; 'KG`{K$
import ]ORat.*0[T
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org.springframework.orm.hibernate3.HibernateCallback; ZrBxEf$f
import %VZ\4+8S
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org.springframework.orm.hibernate3.support.HibernateDaoS hG)lVo!L4j
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upport; vkLG<Y
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import com.javaeye.common.util.PaginationSupport; >dY"B$A>
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public abstract class AbstractManager extends ~46ed3eGzi
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HibernateDaoSupport { "zc!QHpSd
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privateboolean cacheQueries = false; {D8IA3w
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privateString queryCacheRegion; g?wogCs5
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publicvoid setCacheQueries(boolean '@bA_F(
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cacheQueries){ yE>DQ *
this.cacheQueries = cacheQueries; G#>X~qk()
} h Bw~l?G
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publicvoid setQueryCacheRegion(String wAYc)u#
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queryCacheRegion){ m? hX=
this.queryCacheRegion = ap!<8N
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queryCacheRegion; DJ.Ct4
} g(Nf.hko
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publicvoid save(finalObject entity){ usip>y
getHibernateTemplate().save(entity); Ws(>}
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} R_}(p2
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publicvoid persist(finalObject entity){ Fk:(%ci
getHibernateTemplate().save(entity); /uVB[Tk^
} &Re