Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 }(E6:h;}~
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 8tA.d.8
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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 ErESk"2t
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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 RU"w|Qu>pM
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分页支持类: U_}$QW0'
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java代码: Y1k/ngH
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package com.javaeye.common.util; iZMsN*9[
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import java.util.List; YfMe69/0I
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publicclass PaginationSupport { 5.?O PK6
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publicfinalstaticint PAGESIZE = 30; }0 <x4|=
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privateint pageSize = PAGESIZE; "fpj"lf-
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privateList items; R8'yQ#FVy
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privateint totalCount; izFu&syv)
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privateint[] indexes = newint[0]; (la<X<w
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privateint startIndex = 0; SOK2{xCG
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public PaginationSupport(List items, int ~|uCZ.;o
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totalCount){ On'3K+(_
setPageSize(PAGESIZE); ~5!ukGK_
setTotalCount(totalCount); Z;>~<#!4
setItems(items); 3~cOQ%#]4
setStartIndex(0); ,j_{IL690
} k2t?e:)3zr
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public PaginationSupport(List items, int I.8|kscM
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totalCount, int startIndex){ awkVjyq X
setPageSize(PAGESIZE); BB%(!O4Dl
setTotalCount(totalCount); rM?D7a{q
setItems(items); JG( <
setStartIndex(startIndex); a^=4'.ok
} ^mJvB[ u|
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public PaginationSupport(List items, int h[Iu_#HMa
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totalCount, int pageSize, int startIndex){ N"T8
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setPageSize(pageSize); %<M<'jxSca
setTotalCount(totalCount); |iwTzlt*#
setItems(items); gr fF\_[:
setStartIndex(startIndex); /ruf1?\,R
} %eV`};9
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publicList getItems(){ :%>8\q>UX
return items; XS!ZTb>[
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publicvoid setItems(List items){ ~qqtFjlG^
this.items = items; YAPD7hA
} gMGg9U$@
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publicint getPageSize(){ K[kmfXKu
return pageSize; \
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} ky~ x4_y5
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publicvoid setPageSize(int pageSize){ ^LNc
this.pageSize = pageSize; A N%.LK
} Dw#&x/G
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publicint getTotalCount(){
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return totalCount; 5o3_x ~e
} ZGbZu
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publicvoid setTotalCount(int totalCount){ B_&PK7vA
if(totalCount > 0){ [.Y=~)7FB
this.totalCount = totalCount; 5rWRE-
int count = totalCount / b>7ts_b
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pageSize; #_7c>gn
if(totalCount % pageSize > 0) X<QE]RZ
count++; 3>(`Y
indexes = newint[count]; x$Oz0 [
for(int i = 0; i < count; i++){ v8@dvT<
indexes = pageSize * d+;wDu
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} P
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}else{ `o3d@Vc
this.totalCount = 0; -Q@d
} &7W6IM
} Y{yr-E #~M
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publicint[] getIndexes(){ h|H;ZC(B
return indexes; "EHc&,B`
}
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publicvoid setIndexes(int[] indexes){ 4eEs_R
this.indexes = indexes; -,;Ep'
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publicint getStartIndex(){ OKqpc;y:D
return startIndex; ks5'Z8X
} bS'r}
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publicvoid setStartIndex(int startIndex){ q"Md)?5N
if(totalCount <= 0) Za6oYM_z
this.startIndex = 0; mqHt%RX
elseif(startIndex >= totalCount) (FaT{W{
this.startIndex = indexes :=Q|gRTL*
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[indexes.length - 1]; vf=
elseif(startIndex < 0) u J`&hX
this.startIndex = 0; PsgzDhRv
else{ $"8k|^Z3
this.startIndex = indexes &rl>{Uvq
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[startIndex / pageSize]; K_5&_P1
} :#/bA&
} z~H Gc"~
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publicint getNextIndex(){ ie(7m|.
int nextIndex = getStartIndex() + ' XF`&3i
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pageSize; F^YIZ,=p!
if(nextIndex >= totalCount) /pU6trIM
return getStartIndex(); is(!_Iv
else s=TjM?)
return nextIndex; {K:Utdu($q
} ^kr)U8
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publicint getPreviousIndex(){ IR
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int previousIndex = getStartIndex() - ;}~=W!yz
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pageSize; 4l''/$P
if(previousIndex < 0) 2eU[*x
return0; 8zC k9&
else j/<y
return previousIndex; .m?~TOR
} S=}~I
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}
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抽象业务类 YfwJBzD
java代码: +q/h:q.TV
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/** 4w( vRe
* Created on 2005-7-12 )$B+3f
*/ i)L:VkN
package com.javaeye.common.business; wYA/<0'yH
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import java.io.Serializable; 3\n{,Q
import java.util.List; yXA f
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import org.hibernate.Criteria; m@.{zW7bO
import org.hibernate.HibernateException; 9.zQ<