Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ?ZV/U!y
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 .0zY}`
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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 Sj%u)#Ub
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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 'F+C4QAq
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分页支持类: F&!6jv
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java代码: j8v8uZ;x
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package com.javaeye.common.util; z Xg3[orF
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import java.util.List; C.WX.Je
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publicclass PaginationSupport { #{\J
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publicfinalstaticint PAGESIZE = 30; MU`1LHg
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privateint pageSize = PAGESIZE; jZu[n)u'C
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privateList items; <wk!hTmW
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privateint totalCount; lEH65;Nh*
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privateint[] indexes = newint[0]; )X1{
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privateint startIndex = 0; F~,Mw8
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public PaginationSupport(List items, int , Rk9N
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totalCount){ ^=GC3%
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setPageSize(PAGESIZE); 0!4Ts3qn1
setTotalCount(totalCount); LK{*sHi$
setItems(items); sQYkQ81
setStartIndex(0); :tz#v`3o
} *z5.vtfu!
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public PaginationSupport(List items, int Zd3S:),&
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totalCount, int startIndex){ |6.l7u?d
setPageSize(PAGESIZE); p2hB8zL
setTotalCount(totalCount); vk}n,ecl
setItems(items); _~'=C#XI)
setStartIndex(startIndex); hCi 60%g/n
} 1$xNUsD2
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public PaginationSupport(List items, int ty8q11[8
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totalCount, int pageSize, int startIndex){ /
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setPageSize(pageSize); 8V~k5#&Ow
setTotalCount(totalCount); P@,XEQRd`
setItems(items); ,kyJAju>
setStartIndex(startIndex); $jjfC
} [8Y:65
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publicList getItems(){ ayn) 5q/z
return items; tP:lP#9
} BOX{]EOj
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publicvoid setItems(List items){ NpE*fR')
this.items = items; IB(6+n,6s
} `{f}3bO7C
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publicint getPageSize(){ ?qmRbDI
return pageSize; 5[8xV%>;
} Lz
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publicvoid setPageSize(int pageSize){ &yct!YOB2
this.pageSize = pageSize; _?-E7:Sw
} LGq'WU31:)
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publicint getTotalCount(){ oK9( /v
return totalCount; I&fozO
} U&g@.,Y#
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publicvoid setTotalCount(int totalCount){ Q0)#8Rcm
if(totalCount > 0){ oTEL?hw5
this.totalCount = totalCount; 4svBzZdr
int count = totalCount / XD!W: uvb
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pageSize; ?U%qPv:
if(totalCount % pageSize > 0) >1.X*gi?-
count++; 8Q.T g.
indexes = newint[count]; ])[[ V!1
for(int i = 0; i < count; i++){ OyStq i
indexes = pageSize * ;(b9#b.
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} ^a/gBC82x
}else{ ]MqMQLG0t
this.totalCount = 0; OsTc5K.U~
} (j%~u&+-
} 7!evm;A
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publicint[] getIndexes(){ C>ICu*PW
return indexes; ~Z -Vs
} j:Xq1f6a
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publicvoid setIndexes(int[] indexes){ ;"xfOzQ
this.indexes = indexes; \Q {m9fE
} m~w[~flgZ
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publicint getStartIndex(){ ;d@#XIS&-(
return startIndex; 'S20\hwt-
} 3#WT.4k
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publicvoid setStartIndex(int startIndex){ %Si6]3-^@
if(totalCount <= 0) FDv<\2+ c
this.startIndex = 0; X1:V<,}"
elseif(startIndex >= totalCount) aFl;BhM
this.startIndex = indexes i"1Mfz~e
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[indexes.length - 1]; Hf%@3X
elseif(startIndex < 0) k)i3
this.startIndex = 0; J9..P&c\
else{ ISzqEi
this.startIndex = indexes $6#CqWhI
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[startIndex / pageSize]; Je';9(ZK
} {IjF+@I
} bc7/V#W
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publicint getNextIndex(){ Ve8=b0&Y#j
int nextIndex = getStartIndex() + &r[`>B{tP
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pageSize; DKH-Q(M56
if(nextIndex >= totalCount) H!@kO]?n
return getStartIndex(); d}OTO10
else ,xw#NG6
return nextIndex; imVo<Je7z(
} UI0(=>L
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publicint getPreviousIndex(){ <NHH^M\N
int previousIndex = getStartIndex() - XP`Nf)3{Yd
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pageSize; N(O9&L*4fm
if(previousIndex < 0)
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return0; #9=Vg
else '%>=ZhO
return previousIndex; W4t;{b
} E}%B;"b/Tj
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抽象业务类 f<-Jg
java代码: ke!?BZx
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/** PG2: ~$L0
* Created on 2005-7-12 ]yV!
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package com.javaeye.common.business; c& <Fr[AK
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import java.io.Serializable; <g-9T -Ky
import java.util.List; .Q<>-3\K
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import org.hibernate.Criteria; G3C~x.(f
import org.hibernate.HibernateException; pD(j'[
import org.hibernate.Session; /9 3M*b
import org.hibernate.criterion.DetachedCriteria; 3N8t`N
import org.hibernate.criterion.Projections; "WlZ)wyF%
import 6d:zb;Iz
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org.springframework.orm.hibernate3.HibernateCallback; CMe
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import CJtcn_.F
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org.springframework.orm.hibernate3.support.HibernateDaoS A4Ru g\p]
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upport; Nv$R\' 3
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import com.javaeye.common.util.PaginationSupport; PYQ;``~x
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public abstract class AbstractManager extends q~
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HibernateDaoSupport { 8."]//V
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privateboolean cacheQueries = false; 1f%1*L0>@
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privateString queryCacheRegion; y>:N{|
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publicvoid setCacheQueries(boolean rUwZMli
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cacheQueries){ V4hiGO[
this.cacheQueries = cacheQueries; dMPc:tJT
} c>,KZ!
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publicvoid setQueryCacheRegion(String czA5n
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queryCacheRegion){ SII;n2[Ze
this.queryCacheRegion = -#7'r<I9@
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queryCacheRegion; E{`kaWmC&~
} j_/>A=OD
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publicvoid save(finalObject entity){ '>NCMB{*
getHibernateTemplate().save(entity); 7jxslI&F
} $:BKzHmg
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publicvoid persist(finalObject entity){ d+<G1w&