Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 Z3YKG{g
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 sbX7VfAR`
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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 G1w$lc
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 . )+c01
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分页支持类: ?D2a"a$^
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java代码: 6{^\7`
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package com.javaeye.common.util; GVA%iE.
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import java.util.List; xRgdU+,Mj
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publicclass PaginationSupport { =H23eOS_#
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publicfinalstaticint PAGESIZE = 30; =O"]e/CfO
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privateint pageSize = PAGESIZE; 8@LWg d
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privateList items; %Rf9KQ
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privateint totalCount; csLbzDg
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privateint[] indexes = newint[0]; d9U)O6=
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privateint startIndex = 0; \ +sa[jK
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public PaginationSupport(List items, int M_UmnqN1C
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totalCount){ &}Wi@;G]2
setPageSize(PAGESIZE); +x`pWH]2
setTotalCount(totalCount); MG.c`t/w
setItems(items); ,q#SAZ/N
setStartIndex(0); ]o"E4Vht
} _+aR|AEC
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public PaginationSupport(List items, int
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totalCount, int startIndex){ 56c[$ q
setPageSize(PAGESIZE); b:~#;$g
setTotalCount(totalCount); O.QR1
setItems(items); $'5rS$]a/
setStartIndex(startIndex); pGR3
} [kN_b<Pc,
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public PaginationSupport(List items, int Ad-5Znc5
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totalCount, int pageSize, int startIndex){ @|t]9
setPageSize(pageSize); c;"e&tW
setTotalCount(totalCount); R\7r!38
setItems(items); W<#!H e
setStartIndex(startIndex); .),9qz`
} gfIS
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publicList getItems(){ ;8&/JS N M
return items; *My9r.F5o
} }AB_i'C0
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publicvoid setItems(List items){ 2(~Zl\
this.items = items; PknKzrEG:>
} O wu?ND
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publicint getPageSize(){
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return pageSize; +L'Cbv= "
} D4hT Hh
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publicvoid setPageSize(int pageSize){
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this.pageSize = pageSize; `w>D6K+
} =$y J66e
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publicint getTotalCount(){ OS<GAA0
return totalCount; 73'A Q")UJ
} wY%t# [T3
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publicvoid setTotalCount(int totalCount){ $n!5JS@40
if(totalCount > 0){ Gukvd6-g9b
this.totalCount = totalCount; JtMl/h
int count = totalCount / pnp8`\cIH
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pageSize; <
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if(totalCount % pageSize > 0) 1c]{rO=taN
count++; CFW Hih
indexes = newint[count]; 4 Cd5-I
for(int i = 0; i < count; i++){ ~Yl.(R
indexes = pageSize * <{;'0> ToM
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} /&47qU4PJ
}else{ )l
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this.totalCount = 0; (
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} ?,v&
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} |k]]dP|:'
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publicint[] getIndexes(){ (7!pc
return indexes; keD?#yY
} >}NnzZ
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publicvoid setIndexes(int[] indexes){ *5s*-^'#!
this.indexes = indexes; tQT<1Q02i
} .9z}S=ZK
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publicint getStartIndex(){ Y?K?*`Pkc1
return startIndex; ALO/{:l(
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publicvoid setStartIndex(int startIndex){ KI*bW e
if(totalCount <= 0) d
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this.startIndex = 0; #"TYk@whWf
elseif(startIndex >= totalCount) :?z@T[-
this.startIndex = indexes 1TfFWlf[B
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[indexes.length - 1]; e8:O2!HW
elseif(startIndex < 0) p^w)@^f
this.startIndex = 0; P<[)
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else{ 3rN}iSF^
this.startIndex = indexes @Ss W
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[startIndex / pageSize]; ~^'t70 :D
} 8
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} !J {[XT
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publicint getNextIndex(){ y!S:d
int nextIndex = getStartIndex() + KC9VQeSc
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pageSize; 1_9Ka
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if(nextIndex >= totalCount) $5\sV4 8f
return getStartIndex(); ,.=7{y~
else j3+ hsA/(k
return nextIndex; i~<.@&vt
} b rDyjh
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publicint getPreviousIndex(){ vt(}8C+
int previousIndex = getStartIndex() - `W1TqA
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pageSize; &:g1*+
if(previousIndex < 0) ) R5[aO
return0; ]*)l_mut7
else s6;ZaU
return previousIndex; C\{hN
} e!C,<W&B\
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} &g*1 If
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抽象业务类 -J]N
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java代码: ,CqGO %DY
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/** X6r<#n|l
* Created on 2005-7-12 2`FDY3n
*/ ?g*.7Wc
package com.javaeye.common.business; =XSupM[T
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import java.io.Serializable; )7E7K%:b,
import java.util.List; H:z<]Rc
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import org.hibernate.Criteria; a`C2:Z23(#
import org.hibernate.HibernateException; _4k zlD
import org.hibernate.Session; K[9P{0hA
import org.hibernate.criterion.DetachedCriteria; >oAXS\Ts
import org.hibernate.criterion.Projections; [8WG
import '8@4FXK
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org.springframework.orm.hibernate3.HibernateCallback; {
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import \x8'K
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org.springframework.orm.hibernate3.support.HibernateDaoS w(y
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upport; I "R<XX
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import com.javaeye.common.util.PaginationSupport; [zCKJR
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public abstract class AbstractManager extends z<cPy)F]"
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HibernateDaoSupport { B6!ni@$M8X
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privateboolean cacheQueries = false; R?2T0^0
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privateString queryCacheRegion; WBD"d<>'
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publicvoid setCacheQueries(boolean axkNy}ct
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cacheQueries){ ^|cax|>
this.cacheQueries = cacheQueries; Gs*X> D
} `2G%&R,k"D
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publicvoid setQueryCacheRegion(String |1+mHp
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queryCacheRegion){ t RTJ Q
this.queryCacheRegion = j>hBNz
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queryCacheRegion; gJOD+~
} ^8g<>,$
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publicvoid save(finalObject entity){ :l {%H^;1
getHibernateTemplate().save(entity); #b;TjnC5{$
} OlsD
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publicvoid persist(finalObject entity){ p$XvVzW#<
getHibernateTemplate().save(entity); Gnie|[3
} )gxZ &n6
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publicvoid update(finalObject entity){ :-T[)Q+-3
getHibernateTemplate().update(entity); w.-J2%J
} @dhnpR:L
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publicvoid delete(finalObject entity){ FBA th
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getHibernateTemplate().delete(entity); |u^~Z-.
} L\t?^u
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publicObject load(finalClass entity, JuRx>F4
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finalSerializable id){ *V@t]d$=#
return getHibernateTemplate().load bxAHzOB(\
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(entity, id); jG/@kh*m
} M4L<u,\1s
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publicObject get(finalClass entity, ?#/~BZR!
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finalSerializable id){ 1,pPLc(
return getHibernateTemplate().get NPt3#k^bW
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(entity, id); 1 o\COnt
} X;yThb`iI
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publicList findAll(finalClass entity){ 0
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return getHibernateTemplate().find("from NxN~"bfh
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" + entity.getName()); l#3jJn
} Gs(;&fw
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publicList findByNamedQuery(finalString fOz.kK[]
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namedQuery){ .-.b:gdO(
return getHibernateTemplate d+&w7/F
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().findByNamedQuery(namedQuery); u~1 ,88&U
} |:Lk lpdYe
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publicList findByNamedQuery(finalString query, 6:`4bo
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finalObject parameter){ \kC'y9k
return getHibernateTemplate w)"F=33}5
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().findByNamedQuery(query, parameter); B8?j"AF
} P+Sgbtc
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publicList findByNamedQuery(finalString query, [lE^0_+
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finalObject[] parameters){ i6xzHfaYG
return getHibernateTemplate 4+F@BxpB
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().findByNamedQuery(query, parameters); p+^K$w^Cs
} :<,tGYg/!
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publicList find(finalString query){ G(#EW+
return getHibernateTemplate().find cC TTjx{
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(query); '2m"ocaf
} [.nkNda5)v
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publicList find(finalString query, finalObject 8n/[oDc]
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parameter){ =T#?:J#a
return getHibernateTemplate().find s"X0Jx}
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(query, parameter); {"\pMY'7
} WWv.kglz
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public PaginationSupport findPageByCriteria h`Xl~=
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(final DetachedCriteria detachedCriteria){ g\@zQ^O?
return findPageByCriteria N7Kkz
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); ^*WO*f>y
} |O[ I=!
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public PaginationSupport findPageByCriteria 1b8}TG2
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(final DetachedCriteria detachedCriteria, finalint |6~ Kin
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startIndex){ jgT *=/GH2
return findPageByCriteria p?x]|`M
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(detachedCriteria, PaginationSupport.PAGESIZE, FUZ`ST+OL
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startIndex); `6o5[2V
} sDyt 3xN
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public PaginationSupport findPageByCriteria |/!RN[<
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(final DetachedCriteria detachedCriteria, finalint lF)k4
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pageSize, J%8hf%!ud
finalint startIndex){ ;%O>=m'4
return(PaginationSupport) I 3dUI~}u
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getHibernateTemplate().execute(new HibernateCallback(){ fs*OR2YG7
publicObject doInHibernate "qw.{{:tf
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(Session session)throws HibernateException { ZnD(RM
Criteria criteria = \7 }{\hY-
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detachedCriteria.getExecutableCriteria(session); Z+Ppd=||,
int totalCount = iL3k8:x
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((Integer) criteria.setProjection(Projections.rowCount \w2X.2b.F
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()).uniqueResult()).intValue(); CMHg]la
criteria.setProjection \"$jj<gc
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(null); P@Av/r
List items = /
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criteria.setFirstResult(startIndex).setMaxResults TJkWL2r0c
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(pageSize).list(); B-tLRLWn
PaginationSupport ps = ]0;,M
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new PaginationSupport(items, totalCount, pageSize, &_$xMM,X
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startIndex); \D}$foHg
return ps; Hu$JCB-%
}
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}, true); (:|1h@K/R
} y?8V'.f|
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public List findAllByCriteria(final ;e\K8*o
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DetachedCriteria detachedCriteria){ ~D!Y]
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return(List) getHibernateTemplate D0rqte
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().execute(new HibernateCallback(){ eHH9#Vrhc$
publicObject doInHibernate U<U?&hB\@
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(Session session)throws HibernateException { $EPDa?$*
Criteria criteria = ]d,#PF
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detachedCriteria.getExecutableCriteria(session); MpLn)
return criteria.list(); 6>-Gi
} zK&J2P`
}, true); L'}^Av_+
} O]\eMM&
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public int getCountByCriteria(final 8Nxyc>8K~
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DetachedCriteria detachedCriteria){ W[.UM
Integer count = (Integer) dF0:'y
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