Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 1<LC8?wt
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 &YT_#M
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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 hmK8jl<6
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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 >AR Tr'B
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分页支持类: ,U6*kvHS6
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java代码: -Wl)Lez@
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package com.javaeye.common.util; xGKfej9
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import java.util.List; -M"IVyy@
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publicclass PaginationSupport { g~~m'^
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publicfinalstaticint PAGESIZE = 30; yB-.sGu
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privateint pageSize = PAGESIZE; |'ZN!2u
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privateList items; &g*klt'B
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privateint totalCount; $GQphXb$
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privateint[] indexes = newint[0]; >HE,'
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privateint startIndex = 0; @Ppo &>
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public PaginationSupport(List items, int |kId8WtA
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totalCount){ ;xL67e%?
setPageSize(PAGESIZE); gzor%)C
setTotalCount(totalCount); SV&kWbS
setItems(items); O4T'o.
setStartIndex(0);
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} hQJo~'W=
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public PaginationSupport(List items, int Z,3 CC \
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totalCount, int startIndex){ 6A}eSG3
setPageSize(PAGESIZE); mn.`qfMh
setTotalCount(totalCount);
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setItems(items); G OpjRA@
setStartIndex(startIndex); @\ }sb]
} Z
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public PaginationSupport(List items, int d^tVD`Fm
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totalCount, int pageSize, int startIndex){ PQ,+hq
setPageSize(pageSize); K<#-"Xe;
setTotalCount(totalCount); &RWM<6JP
setItems(items); (Q'U@{s
setStartIndex(startIndex); J2'K?|,m
} +I&J7ICV0
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publicList getItems(){ t~ -J %$
return items; 8hZwQ[hr
} u^l*5F%DK
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publicvoid setItems(List items){ dsK/6yu
this.items = items; 6%%PP8.F
} XoJgs$3B
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publicint getPageSize(){ Yq
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return pageSize; Wk}D]o0^@
} &
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publicvoid setPageSize(int pageSize){ <Pio Q>~
this.pageSize = pageSize; dnwdFsf
} OTE<x"=h
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publicint getTotalCount(){ _W |R;Cz]
return totalCount; 0Z,{s158L
} PPj[;(A
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publicvoid setTotalCount(int totalCount){ E+z18Lf?
if(totalCount > 0){ gfm;xT/y
this.totalCount = totalCount; H<Hrwy~
int count = totalCount / $3 4j6;oN
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pageSize; jPk
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if(totalCount % pageSize > 0) i8~r
count++; [w+Q^\%bN
indexes = newint[count]; yC
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for(int i = 0; i < count; i++){ T2weAk#J
indexes = pageSize * >F3.c%VU]w
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} 6t}XJB$+7
}else{ rLF*DB3l
this.totalCount = 0; 6y
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} /P+q}L%
} 'Kz9ygZy
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publicint[] getIndexes(){ 2P9J'
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return indexes; mhzYz;}
} Fr5 Xp
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publicvoid setIndexes(int[] indexes){ p=gX!4,9<
this.indexes = indexes; 'MQ%)hipA
} #C*&R>IvY
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publicint getStartIndex(){ P5?<_x0v4b
return startIndex; AyVrk
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} ,W*H6fw+
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publicvoid setStartIndex(int startIndex){ -MfQ&U
if(totalCount <= 0) N:W9},
this.startIndex = 0; 4|Ui?.4=
elseif(startIndex >= totalCount) 4%_M27bu[
this.startIndex = indexes )`?%]D
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[indexes.length - 1]; &mkpJF/
elseif(startIndex < 0) Z8&'f,
this.startIndex = 0; {exrwnIZj
else{ O4Dr ]Xc]
this.startIndex = indexes P}r)wAt
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[startIndex / pageSize]; 36$[
} /Ox)|)l
} |4C^$
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publicint getNextIndex(){ jv&+<j`r
int nextIndex = getStartIndex() + lhPGE_\
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pageSize; TlRk*/PlJ
if(nextIndex >= totalCount) ^:cRp9l"7
return getStartIndex(); Jqfm@Y
else rVzI_zYqp'
return nextIndex; geGeZ5+B
} oH-8r:{
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publicint getPreviousIndex(){ !7 _\P7M
int previousIndex = getStartIndex() - 0I%: BT
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pageSize; Pil;/t)"
if(previousIndex < 0) tXq)nfGe{
return0; 3 ^}A %-bS
else &jf7k
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return previousIndex; -dRFA2Y
} 5*G%IR@@LK
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} |wp,f%WK
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抽象业务类 E zT`,#b
java代码: @d&H]5
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/** ,8VU&?`<}
* Created on 2005-7-12 _vl}*/=Hc
*/ $3;Upgv
package com.javaeye.common.business; =G${[V\
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import java.io.Serializable; @x{`\AM|%
import java.util.List; z2 hFn&
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import org.hibernate.Criteria; wAF,H8 -DK
import org.hibernate.HibernateException; -5Utlos
import org.hibernate.Session; <hvRP!~<)
import org.hibernate.criterion.DetachedCriteria; a.kbov(
import org.hibernate.criterion.Projections; o0I9M?lP
import 1ThqqB
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org.springframework.orm.hibernate3.HibernateCallback; 6X_\Ve
import bB6[Xj{
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org.springframework.orm.hibernate3.support.HibernateDaoS ;JTt2qQKo
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upport; uA~slS
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import com.javaeye.common.util.PaginationSupport; (03pJV&K
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public abstract class AbstractManager extends |a(fejO3
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HibernateDaoSupport { $g\&5sstE
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privateboolean cacheQueries = false; p]&j;H.
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privateString queryCacheRegion; $yb@
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publicvoid setCacheQueries(boolean W>-B [5O&[
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cacheQueries){ 77,oPLSn
this.cacheQueries = cacheQueries; ?S[Y:<R{:
} #I0pYA2m
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publicvoid setQueryCacheRegion(String (Tvcq
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queryCacheRegion){ D$r
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this.queryCacheRegion = ]k%PG-9
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queryCacheRegion; {=Q7m`1
} 2U$"=:Cf
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publicvoid save(finalObject entity){ M"Y0jQ(
getHibernateTemplate().save(entity); -,#+`>w
} + ,4"
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publicvoid persist(finalObject entity){ %w}gzxN^
getHibernateTemplate().save(entity); >hsuAU.UOR
} h #.N3o
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publicvoid update(finalObject entity){ W<,F28jI3v
getHibernateTemplate().update(entity); &xd.Qi2
} +pmu2}E.3
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publicvoid delete(finalObject entity){ 4,P bg|
getHibernateTemplate().delete(entity); 5>_5]t
{
} -j2 (R?a
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publicObject load(finalClass entity, O<*5$,K9
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finalSerializable id){ ZCui Fm
return getHibernateTemplate().load blt'={Z?.x
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(entity, id); O1y|v[-BW
} vzo4g,Bj
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publicObject get(finalClass entity, #%,RJMv
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finalSerializable id){ c0- ;VZ'
return getHibernateTemplate().get k5BXirB
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(entity, id); &9[P-w;7u
} IQ!Fv/I<
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publicList findAll(finalClass entity){ =\kMXB
return getHibernateTemplate().find("from +Wn&