Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ; jrmr`l=
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ?N&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 V0xO:7G^
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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 xXCsJ9]
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分页支持类: XRi37|p
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java代码: V^_U=Ed@M
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package com.javaeye.common.util; =z\/xzAwX
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import java.util.List; @ X5#?
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publicclass PaginationSupport { t? Q
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publicfinalstaticint PAGESIZE = 30; <4TF ]5
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privateint pageSize = PAGESIZE; `E|>K\
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privateList items; Fi#
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privateint totalCount; Zi<(>@z2
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privateint[] indexes = newint[0]; 37*2/N2
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privateint startIndex = 0; u/%Z0`X
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public PaginationSupport(List items, int K4b2)8
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totalCount){ Nzb=h/;
setPageSize(PAGESIZE); (O/W`qo
setTotalCount(totalCount); B5[As8Sa
setItems(items); N!<X%Ym
setStartIndex(0); %yK- Q,'O
} (^m~UN2@~m
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public PaginationSupport(List items, int AR c
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totalCount, int startIndex){ ?gCP"~
setPageSize(PAGESIZE); B^.:dn
setTotalCount(totalCount); d"S\j@
setItems(items); XII',&
setStartIndex(startIndex);
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public PaginationSupport(List items, int lU`t~|>r+
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totalCount, int pageSize, int startIndex){ +9M";'\c
setPageSize(pageSize); e@PY(#ru
setTotalCount(totalCount); =[0|qGzg
setItems(items); ()Qq7/
setStartIndex(startIndex); pxCQ=0k
} Gsy'':u
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publicList getItems(){ 2B+qS'OT
return items; +kq+x6&
} _jaB[Q=By
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publicvoid setItems(List items){ &td
this.items = items; I(j$^DA.
} j%gle%_
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publicint getPageSize(){ <:!:7
return pageSize; ED>P>Gg
} [{zfI`6
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publicvoid setPageSize(int pageSize){ Rpj{!Ia
this.pageSize = pageSize; Dn`
} [J55%N;#1
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publicint getTotalCount(){ (~fv;}}v
return totalCount; 3 ;AJp_;
} hRqr
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publicvoid setTotalCount(int totalCount){ ^OK;swDW
if(totalCount > 0){ HrUE?Sq
this.totalCount = totalCount; NTVaz.
int count = totalCount / EtQ:x$S_
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pageSize; @Thrizh
if(totalCount % pageSize > 0) r(rT.D&
count++; @S 0mNA
indexes = newint[count]; 5yjG\~
for(int i = 0; i < count; i++){ T=CJUla
indexes = pageSize * |O;vWn'U2
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} V5gr-^E
}else{ @?gRWH;Pq
this.totalCount = 0; 3E}j*lo
} 7/iN`3Bz
} R0K{wY58
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publicint[] getIndexes(){ :k2J
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return indexes; mZ.gS1Dq
} KL"_h`UW
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publicvoid setIndexes(int[] indexes){ G/_xn5XDD
this.indexes = indexes; H|/"'t
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} 3,J{!
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publicint getStartIndex(){ Q]OR0-6<.
return startIndex; X_)x Fg'k
} R_"6E8N
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publicvoid setStartIndex(int startIndex){ n6 wx/:
if(totalCount <= 0) QHd|cg
this.startIndex = 0; 4\j1+&W
elseif(startIndex >= totalCount) 7^1K4%IPl
this.startIndex = indexes %BQ?DTtb7'
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[indexes.length - 1]; r4fd@<=g
elseif(startIndex < 0) *%%n9T
this.startIndex = 0; "V5_B^Gzb]
else{ olm'_{{
this.startIndex = indexes y,`q6(&
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[startIndex / pageSize]; #%{
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} "2 D{X
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publicint getNextIndex(){ *z]P|_:&G
int nextIndex = getStartIndex() + 6U,:J'5gP
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pageSize; Fxn=+Xgg
if(nextIndex >= totalCount) Z=l2Po n
return getStartIndex(); '1d0
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else J ayax]u7J
return nextIndex; fT<3~Z>m
} ;KG}Yr72
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publicint getPreviousIndex(){ )iZhE"?z
int previousIndex = getStartIndex() - F5{GMn;j
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pageSize; ssmJ?sl
if(previousIndex < 0) ]SN5&S
return0; ;a[3RqmKW
else 9h<iw\$'
return previousIndex; (1'sBm7F
} ^5+7D1>W%
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抽象业务类 v4\
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java代码: VotI5O $
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/** K%SfTA1TCB
* Created on 2005-7-12 5yp
*/ rWBgYh
package com.javaeye.common.business; vVo# nzeZ5
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import java.io.Serializable; oJI+c+e"
import java.util.List; N9z!-y'X
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import org.hibernate.Criteria; #QW%
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import org.hibernate.HibernateException; " j:15m5
import org.hibernate.Session; [VouG{
import org.hibernate.criterion.DetachedCriteria; vY,]f^F"
import org.hibernate.criterion.Projections; J^Wqa$<;"
import =.9tRq
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org.springframework.orm.hibernate3.HibernateCallback; |^GN<