Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 <%hSBDG!x
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 l-_voOP
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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 "p.MJxH
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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 ]kbmbO?M
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分页支持类: X3(:)zUL
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java代码: 1lfkb1BM
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package com.javaeye.common.util; P[ n`X
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import java.util.List; YZ:YYcr
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publicclass PaginationSupport { w4:S>6X
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publicfinalstaticint PAGESIZE = 30; n%I%Kbw
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privateint pageSize = PAGESIZE; s6OnHX\it7
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privateList items; Vi23pDZ5
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privateint totalCount; x8.7])?w
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privateint[] indexes = newint[0]; mC
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privateint startIndex = 0; )^
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public PaginationSupport(List items, int *GbC`X)
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totalCount){ Y"D'|i
setPageSize(PAGESIZE); +8."z"i3lE
setTotalCount(totalCount); '{\VOU
setItems(items); Hhr/o~?;}#
setStartIndex(0); + Q
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} AW&HWc~A
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public PaginationSupport(List items, int bsC~
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totalCount, int startIndex){ @y;N
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setPageSize(PAGESIZE); l]WVgu
setTotalCount(totalCount); enj Ti5X
setItems(items);
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setStartIndex(startIndex); %O%+TR7Z
} ED"@!M`1
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public PaginationSupport(List items, int a k@0M[d
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totalCount, int pageSize, int startIndex){ g[@Kd
setPageSize(pageSize); 2JYp.CJv
setTotalCount(totalCount); 4wX{ N
setItems(items); C<r7d [
setStartIndex(startIndex); @ z#;O2
} `i8osX[ &p
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publicList getItems(){ 8*6vX! Z|
return items; ~7Kqc\/H&I
} r*N:-I~z
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publicvoid setItems(List items){ Id
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this.items = items; jx!)N>
} pB@8b$8(Z
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publicint getPageSize(){ pNcNU[c
return pageSize; *SzP7]1m
} +)^F9LPl
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publicvoid setPageSize(int pageSize){ `mQY%p|
this.pageSize = pageSize; U;D!m+.HK
} [Oxmg?W
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publicint getTotalCount(){ <P3r+ 1|R
return totalCount; HLg/=VF7?
} 1Z'cL~9
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publicvoid setTotalCount(int totalCount){ VjtI1I
if(totalCount > 0){ }IC$Du#
this.totalCount = totalCount; $7a|
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int count = totalCount / +h pXMO%?
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pageSize; 6i(V+
if(totalCount % pageSize > 0) MX|CL{H
count++; o*:VG\#Z6
indexes = newint[count]; Mlb=,l
for(int i = 0; i < count; i++){ xgrk>Fb|R
indexes = pageSize * C?#if;c
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} $JypVA(CX
}else{ p^&' C_?
this.totalCount = 0; Cfyas'
} Dw%>y93V
} f_Y[I:
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publicint[] getIndexes(){ #]vq
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return indexes; *DLv$/(0
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publicvoid setIndexes(int[] indexes){ <]b}R;9v
this.indexes = indexes; j?jEWreq]~
} ?g}n$%*5y!
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publicint getStartIndex(){ ::uD%a zd
return startIndex; @es}bKP
} /"- k
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publicvoid setStartIndex(int startIndex){
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if(totalCount <= 0) 5{zXh
this.startIndex = 0; q#pBlJ.LK
elseif(startIndex >= totalCount) ?Mp~^sgp'
this.startIndex = indexes B cX}[?c
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[indexes.length - 1]; qDqIy+WR
elseif(startIndex < 0) b+'G^!JR
this.startIndex = 0; +e)So+.W
else{ qlIC{:E0
this.startIndex = indexes G&0&*mp
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[startIndex / pageSize]; Yi{[llru
} $G"PZ7
} .bB_f7TH.
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publicint getNextIndex(){ ;8JJ#ED
int nextIndex = getStartIndex() + D2[wv+#)
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pageSize; Lbq"( b
if(nextIndex >= totalCount) _0)#-L>xKF
return getStartIndex(); X9/V;!
else ?6p6OB
return nextIndex; eE>3=1d]w
} jm =E_86_
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publicint getPreviousIndex(){ E(4ti]'4
int previousIndex = getStartIndex() - S&6}9r
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pageSize; H
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if(previousIndex < 0) [])M2_
return0; }yLdU|'W
else ; QR|v
return previousIndex; prlnK
} gu/eC
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} N(dn"`8
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抽象业务类 N$/{f2iC
java代码: A%"XN k
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/** kNI m90,g
* Created on 2005-7-12 90k|W>
*/ MEI]N0L3
package com.javaeye.common.business; .Ap[C? mV
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import java.io.Serializable; 37ll8
import java.util.List; LOX[h$
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import org.hibernate.Criteria; (
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import org.hibernate.HibernateException; T?) U|
import org.hibernate.Session; O!d^v9hM,
import org.hibernate.criterion.DetachedCriteria; x-nwo:OA
import org.hibernate.criterion.Projections; 9'3bzhT$
import &&ecq
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org.springframework.orm.hibernate3.HibernateCallback; XEfTAW#7
import 56G5JSB=\
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org.springframework.orm.hibernate3.support.HibernateDaoS ,ZD!Qb
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upport; U@|{RP
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import com.javaeye.common.util.PaginationSupport; XZV)4=5iSO
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public abstract class AbstractManager extends kX'1.<[
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HibernateDaoSupport { KAgiY4
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privateboolean cacheQueries = false; KFAB
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privateString queryCacheRegion; \&R