Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ~>j5z&:&
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 a9+l:c@
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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 %%7~<=rk
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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 T>$S&U
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分页支持类: oqXs2F
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java代码: [EdX6
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package com.javaeye.common.util; >[$j(k^
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import java.util.List; E8`AU<
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publicclass PaginationSupport { EG7.FjnVu
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publicfinalstaticint PAGESIZE = 30; j\/Rjn+:[
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privateint pageSize = PAGESIZE; D^\gU-8M
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privateList items; ZQ MK1
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privateint totalCount; c9uln
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privateint[] indexes = newint[0]; ZcP/rT3{^
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privateint startIndex = 0; *(w#*,lv
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public PaginationSupport(List items, int x_k@hGSC
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totalCount){ aRc2#:~;
setPageSize(PAGESIZE); @hz~9AII9
setTotalCount(totalCount); /'g/yBY
setItems(items); `P(Otr[6
setStartIndex(0); 40M/Gu:
} $-J=UT2m
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public PaginationSupport(List items, int 9pehQFfH
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totalCount, int startIndex){ y%wjQC 0~
setPageSize(PAGESIZE); &_Vd
setTotalCount(totalCount); Z1&<-T_
setItems(items); u/,ng&!
setStartIndex(startIndex); gf]k@-)
} HOY@<'
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public PaginationSupport(List items, int '^6jRI,
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totalCount, int pageSize, int startIndex){ +{7/+Zz
setPageSize(pageSize); W["c3c
setTotalCount(totalCount); IW~q,X+`V
setItems(items); 7)FI_uW
setStartIndex(startIndex); Y/Dah*
} Ln3<r&&Jz
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publicList getItems(){ :wRaB7
return items; YU(|i}b
} V\=QAN^
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publicvoid setItems(List items){ 3<:m;F*#
this.items = items; X1N*}@:/
} c_RAtM<n
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publicint getPageSize(){ BQ
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return pageSize; Y \oz9tf8
} e5HHsR6
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publicvoid setPageSize(int pageSize){ gA/8Df\G:l
this.pageSize = pageSize; [\|p~Qb)s
} VW%eB
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publicint getTotalCount(){ E$?:^ausu
return totalCount; N
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} QV_e6r1t#m
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publicvoid setTotalCount(int totalCount){ K3xs=q]:@
if(totalCount > 0){ e ab_"W
this.totalCount = totalCount; 2(%C
int count = totalCount / Ug=)_~
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pageSize; Lfj]Y~*z
if(totalCount % pageSize > 0) Ic,V,#my
count++; O>~ozW&
indexes = newint[count]; V+y yy-/
for(int i = 0; i < count; i++){ \y\@=j
indexes = pageSize * 6.>l
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} YH
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}else{ YYzl"<)c
this.totalCount = 0; zo{WmV7[|
} 9yA? 82)E
} "A0J~YvYWJ
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publicint[] getIndexes(){ ]u(EEsG/
return indexes; >i:hdcxe
} G|,'6|$jE
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publicvoid setIndexes(int[] indexes){ _1sjsGp>
this.indexes = indexes; /#]4lFk:h
} x*}*0).
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publicint getStartIndex(){ 5kju{2`GF
return startIndex; 99]&Xj
} CKau\N7T
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publicvoid setStartIndex(int startIndex){ rERHfr`OU
if(totalCount <= 0) ySXQn#}-,
this.startIndex = 0; 5[\LQtM
elseif(startIndex >= totalCount) ]!=,8dY
this.startIndex = indexes D$W09ng-
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[indexes.length - 1]; N*CcJp{Q
elseif(startIndex < 0) lgL|[ik`
this.startIndex = 0; n\x@~ SzrX
else{ JF%_8Ye5
this.startIndex = indexes M6mJ'Q482
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[startIndex / pageSize]; p~!UE/V
} fSL'+l3
} 7yDWc m_y
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publicint getNextIndex(){ Y8$,So>~
int nextIndex = getStartIndex() + _,C>+dv)
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pageSize; LE1#pB3TG
if(nextIndex >= totalCount) F]4JemSjK
return getStartIndex(); QT\=>,Fz _
else u+
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return nextIndex; Tz"Xm/Gy
} x_K8Gr#Z 0
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publicint getPreviousIndex(){ +uD4$Wt_F
int previousIndex = getStartIndex() - p+pBk$4
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pageSize; K>a+-QWK3
if(previousIndex < 0) "{igrl8
return0; \dzHG/e
else =8!FY"c*
return previousIndex; Munal=wL
} 3gcDc~~=
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} v.~uJ.T
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抽象业务类 <8[y2|UBt
java代码: wP: w8O
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/** 'Rg6JW\
* Created on 2005-7-12 "Om4P|
*/ K~I%"r|l
package com.javaeye.common.business; sPod)w?e
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import java.io.Serializable; w.2[Xx~
import java.util.List; 9jC>OZ0s
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import org.hibernate.Criteria; F}C.F
import org.hibernate.HibernateException; TcP
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import org.hibernate.Session; >2%*(nL
import org.hibernate.criterion.DetachedCriteria; `BA,_N|6
import org.hibernate.criterion.Projections; N;A#K7A[@
import 5,,b>Z<
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org.springframework.orm.hibernate3.HibernateCallback; k ='c*`IE
import 2Kg+SLU[~
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org.springframework.orm.hibernate3.support.HibernateDaoS 4-wCk=I
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upport; U~)i&":sN
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import com.javaeye.common.util.PaginationSupport; XC
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public abstract class AbstractManager extends P`$"B0B)
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}
HibernateDaoSupport { JTw3uM, e
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privateboolean cacheQueries = false; g+xA0qW
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privateString queryCacheRegion; >kLUQ%zE@
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publicvoid setCacheQueries(boolean u0M? l
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cacheQueries){ vp>,}nx4
this.cacheQueries = cacheQueries; 1lJY=`8qa
} 4.^1D';(
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publicvoid setQueryCacheRegion(String {r$n
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queryCacheRegion){ X9YYUnR2
this.queryCacheRegion = $<~o,e-4
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queryCacheRegion; fF\s5f#:
} )U~,q>H+
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publicvoid save(finalObject entity){ '^!1A GF
getHibernateTemplate().save(entity); aIA9rn
} Eed5sm$H
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publicvoid persist(finalObject entity){ h
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getHibernateTemplate().save(entity); >H*?ktcW
} F_?aoP&5
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publicvoid update(finalObject entity){ PS13h_j
getHibernateTemplate().update(entity); n'&Cr0{
} _2wU(XYH
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publicvoid delete(finalObject entity){ S"/M+m+ ]
getHibernateTemplate().delete(entity); T"NDL[*
} {} #W~1`
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