Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 !X(Lvt/
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 R,C)|*ef
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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 5znLpBX<N
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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 n <6}
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分页支持类: 9qIUBH e
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java代码: [`_&d7{-4b
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package com.javaeye.common.util; f-y4V}
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import java.util.List; o$'Fz[U
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publicclass PaginationSupport { 9r
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publicfinalstaticint PAGESIZE = 30; i/Q*AG>b
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privateint pageSize = PAGESIZE; 'd]9u9u
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privateList items; Tg&{P{$
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privateint totalCount; LbJtU!
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privateint[] indexes = newint[0]; O4@Ki4f3A%
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privateint startIndex = 0; iv?'&IUfK
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public PaginationSupport(List items, int y+(<Is0w
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totalCount){ HyiuU`
setPageSize(PAGESIZE); +>.plvZhu
setTotalCount(totalCount); Gs7mO
setItems(items); ::dLOf8o
setStartIndex(0); &s"&rFFO[
} z<+".sD'
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public PaginationSupport(List items, int ~{n_rKYV
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totalCount, int startIndex){ ; QR|v
setPageSize(PAGESIZE); b*nytF
setTotalCount(totalCount); pCb@4nb
setItems(items); ""^9WLH4g-
setStartIndex(startIndex); dg4"4\c*P
} @!Il!+^3
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public PaginationSupport(List items, int fm;1Iu#
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totalCount, int pageSize, int startIndex){ 7WiVor$g-
setPageSize(pageSize); 7\"-<z;kK
setTotalCount(totalCount); LOX[h$
setItems(items); ynw^nmM
setStartIndex(startIndex); BXa1[7Z
} +;C|5y
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publicList getItems(){ <eO 7b6_
return items; )FMpfC>An
} 56G5JSB=\
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publicvoid setItems(List items){ <s9Sx>Zb
this.items = items; U@|{RP
} XZV)4=5iSO
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publicint getPageSize(){ XC?H
return pageSize; y@~.b^?_u
} ,T|iA/c
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publicvoid setPageSize(int pageSize){ $B}(5Da
this.pageSize = pageSize; sG}}a}U1
} xE9^4-Px*
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publicint getTotalCount(){ T(a*d7
return totalCount; 0w< iz;30
} bTA<AoW9="
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publicvoid setTotalCount(int totalCount){ O5_[T43
if(totalCount > 0){ 6du"^g
this.totalCount = totalCount; `WWf?g
int count = totalCount / aZ5qq+1x
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pageSize; ,{J2i#g<
if(totalCount % pageSize > 0) >8t(qM-~:
count++; t^8#~o!%
indexes = newint[count]; zLOmtZ(['
for(int i = 0; i < count; i++){ Z'S>i*Ts
indexes = pageSize * bCd! ap+#
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} ],H%u2GE_
}else{ js;IUSj.
this.totalCount = 0; bTO$B2eh|
} (C6Y*Zm\
} vFl|
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publicint[] getIndexes(){ [0/ ?(i|
return indexes; eC[g"Ef
} ]Y;$~qQ
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publicvoid setIndexes(int[] indexes){ m6lNZb]
this.indexes = indexes; HFo}r~
} SB$~Btr
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publicint getStartIndex(){ w\$b(HC
return startIndex; hzKfYJcQ|
} F4bF&% R
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publicvoid setStartIndex(int startIndex){ <408lm
if(totalCount <= 0) >4h4t/G
this.startIndex = 0; Ig N,]y
elseif(startIndex >= totalCount) yMo@ka=v
this.startIndex = indexes T,WWQm
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[indexes.length - 1]; +|#:*GZ
elseif(startIndex < 0) }d6g{`
this.startIndex = 0; !u7WCw.D m
else{ :Bn\1\
this.startIndex = indexes |d{(&s}
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[startIndex / pageSize]; 'JkK0a2D
} h[XGFz
} #jDO?Y Sa
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publicint getNextIndex(){ n`^</0
int nextIndex = getStartIndex() + g2iSc
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pageSize; L`Qiu@
if(nextIndex >= totalCount) m m`:ci
return getStartIndex(); ipU"|{NK
else @|d|orMC
return nextIndex; *qpmI9m
} iqOd]H]v
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publicint getPreviousIndex(){
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int previousIndex = getStartIndex() - ]+@b=J2b
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pageSize; ?np`RA
if(previousIndex < 0) pD &\Z~5T
return0; -MOf[f^
else yq&]>ox
return previousIndex; $
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} $(_i>&d<
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} ;OVJM
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抽象业务类 NB,iC
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java代码: *_^AK=i
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/** 8{h:z
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* Created on 2005-7-12 T4Zp5m")
*/ *.Kc-f4mP
package com.javaeye.common.business; m >'o&Hj
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import java.io.Serializable; o"5R^a@
import java.util.List; .Mm8\].
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import org.hibernate.Criteria; ybB/sShGM
import org.hibernate.HibernateException; @AWKEo<7.I
import org.hibernate.Session; u2BVQ<SA
import org.hibernate.criterion.DetachedCriteria; !O $EVl
import org.hibernate.criterion.Projections; bup;4~g
import '2#O{
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org.springframework.orm.hibernate3.HibernateCallback; ;O.U-s
import F
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org.springframework.orm.hibernate3.support.HibernateDaoS \|wVIi
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upport; B_@>HZ\&
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import com.javaeye.common.util.PaginationSupport; B Q".$(c
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public abstract class AbstractManager extends K b{
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HibernateDaoSupport { 5 {'%trDEy
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privateboolean cacheQueries = false; ^
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privateString queryCacheRegion; 8m-ryr)
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publicvoid setCacheQueries(boolean hOw7"'# !
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cacheQueries){ 1Te:&d
this.cacheQueries = cacheQueries; +vJ[k 2d
} uKhfZSx0w
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publicvoid setQueryCacheRegion(String Qm ;ip E
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queryCacheRegion){ ?hsOhUs(5
this.queryCacheRegion = UB(Q &U_
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queryCacheRegion; (?)".Q0
} fWF\V[
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publicvoid save(finalObject entity){ D4;V8(w=#
getHibernateTemplate().save(entity); X[BKF8,
} |=,V,*"
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publicvoid persist(finalObject entity){ \q%li)
getHibernateTemplate().save(entity); %6dFACv
} YVqhX]/
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publicvoid update(finalObject entity){ Zwp*JH+G
getHibernateTemplate().update(entity); #ZF|5r +
} R:Z{,R+
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publicvoid delete(finalObject entity){ r|6S&Ia>
getHibernateTemplate().delete(entity); d%5QEVV
} ="<+^$7:k
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publicObject load(finalClass entity, )\'U$
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finalSerializable id){ pH'#v]"
return getHibernateTemplate().load Y }Rx`%X
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(entity, id); vR-rCve$P
} m3\lm@`)O
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publicObject get(finalClass entity, Gb~*[
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finalSerializable id){ b78'yM&
return getHibernateTemplate().get buG0#:
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(entity, id); Quc9lL
} ?4(uwXp
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publicList findAll(finalClass entity){ _(TavL>l
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return getHibernateTemplate().find("from `lqMifD
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" + entity.getName()); K({+3vK
} 7V%}U5
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publicList findByNamedQuery(finalString rwv_
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namedQuery){ <dLdSEw
return getHibernateTemplate t8E'd:pE
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().findByNamedQuery(namedQuery); (Lo<3a-]
} C>4y<