Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 y?O{J!U
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 G}ElQD
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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 ^(m`5]qr7J
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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 :|`'\%zW-
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分页支持类: 2n+j.
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java代码: $UW!tg*U&
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package com.javaeye.common.util; $de_>
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import java.util.List; RtH[OZu(8
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publicclass PaginationSupport { C&D]!ZvF
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publicfinalstaticint PAGESIZE = 30; Tj*o [2mD
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privateint pageSize = PAGESIZE; 6nt$o)[
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privateList items; RI w6i?/I
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privateint totalCount;
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privateint[] indexes = newint[0]; 8F($RnP3
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privateint startIndex = 0; JfKhYRl
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public PaginationSupport(List items, int _tL+39 u
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totalCount){ WhE5u&`
setPageSize(PAGESIZE); OzBo*X/p
setTotalCount(totalCount); `}k!SqG
setItems(items); <kn#`w1U'
setStartIndex(0); LW_Y
} WzgzI/
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public PaginationSupport(List items, int ^i&Qr+v
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totalCount, int startIndex){ Z]$yuM
setPageSize(PAGESIZE); !? ?Cxs'
setTotalCount(totalCount); lnbw-IE!
setItems(items); V'c9DoSRI\
setStartIndex(startIndex); Fdd$Bl.&XS
} OTtSMO
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public PaginationSupport(List items, int iJ42` 51
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totalCount, int pageSize, int startIndex){ hw_7N)}
setPageSize(pageSize); ./kmI#gaV
setTotalCount(totalCount); y[qW>
setItems(items); h 7kyz
setStartIndex(startIndex); Wr`=P,
} !IoD";Oi
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publicList getItems(){ T7m rOp
return items; ^]'p927
} *-Lnsi^7v
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publicvoid setItems(List items){ 9L%&4V}BIS
this.items = items; ]gTaTY
} {ZbeF#*"
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publicint getPageSize(){
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return pageSize; fouy??
} '7>Vmr6
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publicvoid setPageSize(int pageSize){ jR@-h"2*A
this.pageSize = pageSize; 1|/2%IDUI
} i/O!bq[o
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publicint getTotalCount(){ i2)SSQ
return totalCount; (n"M)
} ,~K_rNNZ
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publicvoid setTotalCount(int totalCount){ Yc:b:\0}F6
if(totalCount > 0){ XF\`stEnb
this.totalCount = totalCount; "4g1I<
int count = totalCount / i+(`"8W
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pageSize; z-7F,$
if(totalCount % pageSize > 0) P%Q}R[Q
count++; VmBLNM?
indexes = newint[count]; g?j"d{.9t
for(int i = 0; i < count; i++){ qFUpvTe
indexes = pageSize * Z I}m~7
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} +6gS]
}else{ b@1QE
this.totalCount = 0; 7azxqa5:
} l*'8B)vN2
} MLBZmM '
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publicint[] getIndexes(){ KN}[N+V>
return indexes; ]qV J>
} 7UQD02
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publicvoid setIndexes(int[] indexes){ _tjFb_}Q
this.indexes = indexes; 5R"b1
} Y#]Y$n
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publicint getStartIndex(){ ^~BJu#uVyy
return startIndex; 0QC*Z (
} b17p;wS
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publicvoid setStartIndex(int startIndex){ @Zq,mPaR$
if(totalCount <= 0) _LK>3Sqd
this.startIndex = 0; S^x9 2&!
elseif(startIndex >= totalCount) +bRL.xY
this.startIndex = indexes =PZs'K
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[indexes.length - 1]; oAvJ"JH@i
elseif(startIndex < 0) oR-_=U^
this.startIndex = 0; t9K.Jc0
else{ |0qk
this.startIndex = indexes 0-|1}/{4
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[startIndex / pageSize]; Ab_aB+g ]
} //LXbP3/
} ;V@}
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publicint getNextIndex(){ x<ENN>mW1
int nextIndex = getStartIndex() + PA5g]Tz
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pageSize; '
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if(nextIndex >= totalCount) p{-1%jQ}]
return getStartIndex(); A<TJ3Jp]
else ![vc/wuf
return nextIndex; *JpEBtTv=5
} (|6qN
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publicint getPreviousIndex(){ UBU(@T(
int previousIndex = getStartIndex() - 3ZB;-F5v
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pageSize; p!Gf^
if(previousIndex < 0) ?` `+OH
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else TTOd0a
return previousIndex; Q'|cOQX
} T|{BT!
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} (g4g-"rc
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抽象业务类 d>AVUf<o~
java代码: 8\a)}k~4
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/** Mys;Il"
* Created on 2005-7-12 yNDyh
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package com.javaeye.common.business; "RShsJZMH
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import java.io.Serializable; VJ$C)0xQA
import java.util.List; T\WNT#My
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import org.hibernate.Criteria; /=3g-$o{`
import org.hibernate.HibernateException; M,#t7~t
import org.hibernate.Session; q7)$WXe2LM
import org.hibernate.criterion.DetachedCriteria; _ssHRbE
import org.hibernate.criterion.Projections; '<}7bw}+c
import !^LvNW\|
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org.springframework.orm.hibernate3.HibernateCallback; cX=` Tl
import C>MoR 3]
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org.springframework.orm.hibernate3.support.HibernateDaoS I|LS_m
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upport; JPpYT~4
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import com.javaeye.common.util.PaginationSupport; q2f/#"k
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public abstract class AbstractManager extends sZbzY^P
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HibernateDaoSupport { MkYem6
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privateboolean cacheQueries = false; 21WqLgT3 4
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privateString queryCacheRegion; pUwX
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publicvoid setCacheQueries(boolean nAX|=qp#
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cacheQueries){ Zk/NO^1b
this.cacheQueries = cacheQueries; &6:,2W&s
} 8bysg9H0
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publicvoid setQueryCacheRegion(String Lhc@*_2
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queryCacheRegion){ J`8>QMK^5
this.queryCacheRegion = \LYQZ*F
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queryCacheRegion;
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} zk/!#5JtK
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publicvoid save(finalObject entity){ R5i8cjKZ?w
getHibernateTemplate().save(entity); QP;b\11m
} q+:(@w6
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publicvoid persist(finalObject entity){ Ab"uN
getHibernateTemplate().save(entity); 8qc%{8
} (o:CxhV
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publicvoid update(finalObject entity){ oy`m:Xp
getHibernateTemplate().update(entity); g:6yvEu$ -
} Nb8<8O
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publicvoid delete(finalObject entity){ dSL %%
getHibernateTemplate().delete(entity); S]o
} ?dmMGm0T9
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publicObject load(finalClass entity, 0!VLPA:
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finalSerializable id){ &B2c]GoW
return getHibernateTemplate().load w2,T.3DT
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(entity, id); c@^:tB
} F@*lR(4C
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publicObject get(finalClass entity, nSow$6T_
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finalSerializable id){ FezW/+D
return getHibernateTemplate().get UbibGa=
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(entity, id); b c4x"]!
} __fR #D
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publicList findAll(finalClass entity){ oto od
return getHibernateTemplate().find("from "[?/I3{E
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" + entity.getName()); u20b+c4
} _]S6>
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publicList findByNamedQuery(finalString 5muW*7
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namedQuery){ z-gwNE{
return getHibernateTemplate &0eB@8{N
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().findByNamedQuery(namedQuery); t(Zs*c(
} /C:'qhY,
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publicList findByNamedQuery(finalString query, Z
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finalObject parameter){ HV9SdJOf
return getHibernateTemplate ^'fKey`
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().findByNamedQuery(query, parameter); -h@0 1
} :|M/+XPu
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publicList findByNamedQuery(finalString query, huoKr
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finalObject[] parameters){ pG( knu
return getHibernateTemplate y9L#@
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().findByNamedQuery(query, parameters); oyt//SE
} {~^)-^Wt:
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publicList find(finalString query){ JZ%F
return getHibernateTemplate().find 1(i>Vt.+
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(query); k2uiu
}
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publicList find(finalString query, finalObject cQ.;dtT0
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parameter){ YU=ZZEVi
return getHibernateTemplate().find D' `"_
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(query, parameter); o w_y
} 6lWFxbh
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public PaginationSupport findPageByCriteria NoO+xLHw8
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(final DetachedCriteria detachedCriteria){ V*zz-
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return findPageByCriteria H 1D;:n
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); 2]3HX3
} MgQU6O<
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public PaginationSupport findPageByCriteria ~J-|,ZMd
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(final DetachedCriteria detachedCriteria, finalint b_jZL'en
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startIndex){ &U~r}=
return findPageByCriteria !Gp3/<"Wy$
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(detachedCriteria, PaginationSupport.PAGESIZE, jN%p5nZ^EK
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startIndex); A<Z5
} p$nK@t}
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public PaginationSupport findPageByCriteria s!'A\nVV1$
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(final DetachedCriteria detachedCriteria, finalint %Sn 6*\z
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pageSize, =/g$bZ
finalint startIndex){ [Hj'nA^
return(PaginationSupport) qX+gG",8
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getHibernateTemplate().execute(new HibernateCallback(){ WjrMd#^
publicObject doInHibernate %Lp7@
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(Session session)throws HibernateException { V<vPFxC
Criteria criteria = >yBxa)
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detachedCriteria.getExecutableCriteria(session); ,=Nw(GI
int totalCount = `8(h,aj;
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((Integer) criteria.setProjection(Projections.rowCount k&A7alw
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()).uniqueResult()).intValue(); `_1(Q9Q
criteria.setProjection PDt<lJU+X
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(null); P iQkJ[
List items = 5eOj,[?
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criteria.setFirstResult(startIndex).setMaxResults tP`G]BCbt
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(pageSize).list(); V[Rrst0yo
PaginationSupport ps = +lW}ixt
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new PaginationSupport(items, totalCount, pageSize, 8pPC 9ew\=
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startIndex); < m enABN4
return ps; x_<bK$OU
} n#>.\F
}, true); vK6ibl0
} qB F!b0lr
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public List findAllByCriteria(final 5e)6ua ,
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DetachedCriteria detachedCriteria){ [v0ri<