Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 oj6b33z
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 RcASFBNpS
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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 (&w'"-`
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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 me#?1r
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分页支持类: +EmT+$>J
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java代码: ~4YLPMGKl
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package com.javaeye.common.util; ;Jn"^zT
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import java.util.List; jL|y4
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publicclass PaginationSupport { ],fu#pi=]
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publicfinalstaticint PAGESIZE = 30; zH1pW(
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privateint pageSize = PAGESIZE; QEh_2
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privateList items; a cSm+t
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privateint totalCount; )wmG&"qsP
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privateint[] indexes = newint[0]; (6aSDx
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privateint startIndex = 0; woH B![Q,
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public PaginationSupport(List items, int uN:|4/;{&
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totalCount){ ndSM*Fq
setPageSize(PAGESIZE); SNV[KdvP*
setTotalCount(totalCount); uB(16|W>S
setItems(items); RG'Ft]l92N
setStartIndex(0); D^?jLfW8
} M
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public PaginationSupport(List items, int 4@K9%
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totalCount, int startIndex){ !besMZ
setPageSize(PAGESIZE); ;B 35E!QJ
setTotalCount(totalCount); q(i^sE[y
setItems(items); ?P+n0S!
setStartIndex(startIndex); d},IQ,Az:Z
} <Rs#y:
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public PaginationSupport(List items, int u,zA^%
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totalCount, int pageSize, int startIndex){ 'IorjR@40
setPageSize(pageSize); FS3MR9
setTotalCount(totalCount); W\'njN
setItems(items); X{n7)kgL
setStartIndex(startIndex); DcNQ2Zz?%
} m])!'Pa(=
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publicList getItems(){ b8?qYm
return items; vyME
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publicvoid setItems(List items){ U4DQ+g(A
this.items = items; 0W asE1t|
} [-Zp[
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publicint getPageSize(){ 4G:I VK9
return pageSize; bYuQ"K
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} HF9\SVR
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publicvoid setPageSize(int pageSize){ yIm@m[B;
this.pageSize = pageSize; O/X;(qYd
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publicint getTotalCount(){ dDuT,zP
return totalCount; M18H1e@Al
} "(@W^qF}d
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publicvoid setTotalCount(int totalCount){ U($sH9,
if(totalCount > 0){ hK!Z~
this.totalCount = totalCount; :$bp4+3>
int count = totalCount / ?[$=5?
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pageSize; ;2o+|U@
if(totalCount % pageSize > 0) pK)*{fC$`
count++; p^2"g~
indexes = newint[count]; i\P?Y(-{
for(int i = 0; i < count; i++){ 'Zq$W]i
indexes = pageSize * j3Ng] @N
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} L{v^:
}else{ x.V6C0|6"
this.totalCount = 0; Cd4a7<-
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} <OKzb3e
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publicint[] getIndexes(){ -ff|Xxar{
return indexes; -{Lc?=
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publicvoid setIndexes(int[] indexes){ Zk#^H*jgx
this.indexes = indexes; z3l=aAw8
} -Jo8jE~>V
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publicint getStartIndex(){ aR }|^ex
return startIndex; *wNX<R.
} ryz
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publicvoid setStartIndex(int startIndex){ ~[@Gj{6p0
if(totalCount <= 0) bYr;~
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this.startIndex = 0; e=11EmN9
elseif(startIndex >= totalCount) ];bl;BP
this.startIndex = indexes Z[.+Wd\)-9
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[indexes.length - 1]; d^"dL" Q6m
elseif(startIndex < 0) #!IezvWf
this.startIndex = 0; _Qy3A T~
else{ )ca^%(25!z
this.startIndex = indexes @w1@|"6vF
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[startIndex / pageSize]; DRldRm/
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} \bt+46y@]
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publicint getNextIndex(){ `={s*^Ta
int nextIndex = getStartIndex() + "K EB0U
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if(nextIndex >= totalCount) [OI&_WIw
return getStartIndex(); 7wt2|$Qz
else %21i#R`E
return nextIndex; =-M)2&~L~
} nZF(92v
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publicint getPreviousIndex(){ ILt95l
int previousIndex = getStartIndex() - zl>l.zJ
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pageSize; qp(F}@
if(previousIndex < 0) *}9i@DP1,
return0; q&IO9/[dk
else LEM{$Fxo&
return previousIndex; K)2ZH@
} :@PM+ [B|Q
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} @=[/bG
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抽象业务类 myT z
java代码: NIeKS_ +
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/** Wt +,6Cq
* Created on 2005-7-12 1y5]+GU'`
*/ eSZS`(#!(
package com.javaeye.common.business; bl|k6{A
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import java.io.Serializable; :uZfdu
import java.util.List; fH.:#O:
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import org.hibernate.Criteria; \Nc/W!r*9
import org.hibernate.HibernateException; -GkNA"2M[
import org.hibernate.Session; ~L!*p0dS^
import org.hibernate.criterion.DetachedCriteria; 7@g8nv(p
import org.hibernate.criterion.Projections; V/Hjd`n)`i
import 'hl>pso.
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org.springframework.orm.hibernate3.HibernateCallback; eTI<WFRc_
import b _fI1f|
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