Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 8?']W\)
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 oS)0,p
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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 *IzcW6 [9
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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 Df;FOTTi%
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分页支持类: 9bjjo;A
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java代码: CAY^ `K!
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package com.javaeye.common.util; / /qTMxn
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import java.util.List; j' -akXo<
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publicclass PaginationSupport { ~az6n)
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publicfinalstaticint PAGESIZE = 30; Y',s|M1})\
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privateint pageSize = PAGESIZE; 9;Ezm<VQ
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privateList items; !-r@_tn|
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privateint totalCount; +3vK=d_Va
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privateint[] indexes = newint[0]; Z~g~,q
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privateint startIndex = 0; HKP\`KBCj
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public PaginationSupport(List items, int W<;i~W
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totalCount){ >82Q!HaH
setPageSize(PAGESIZE); E?&dZR
setTotalCount(totalCount); %Ua*}C
setItems(items); D`e!CprF
setStartIndex(0); Kv+E"2d
} Z!6\KV]
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public PaginationSupport(List items, int 8_f0P8R!y
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totalCount, int startIndex){ pw:<a2.
setPageSize(PAGESIZE); yyk[oH-Q
setTotalCount(totalCount); :RHNV
setItems(items); PiI ):B>
setStartIndex(startIndex); =b,$jCv<,5
} [?W3XUJ,Y
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public PaginationSupport(List items, int 5gI@~h S
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totalCount, int pageSize, int startIndex){ [x!T<jJ
setPageSize(pageSize); $ sEe0
setTotalCount(totalCount); .)})8csl.d
setItems(items); Gyy:.]>&
setStartIndex(startIndex); 8NeP7.U<w
} 65ijzZL;
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publicList getItems(){ 0"u*K n
return items; qChS} Q
} ^]wm Y
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publicvoid setItems(List items){
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this.items = items; S=[K/Kf-
} QfU
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publicint getPageSize(){ ;eG%#=>
return pageSize; =DE5Wq19
} 2b1LC!'U
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publicvoid setPageSize(int pageSize){ XnWr~h{b
this.pageSize = pageSize; h'UWf"d
} E( 8!VY ^
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publicint getTotalCount(){ z^~uq:
return totalCount; S_c#{4n
} peGXU/5.I
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publicvoid setTotalCount(int totalCount){ 1$@k@*u\
if(totalCount > 0){ GOH@|2N
this.totalCount = totalCount; .XLe\y
int count = totalCount / G7%Nwe~Y
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pageSize; ,2H5CFX/
if(totalCount % pageSize > 0) OD>-^W t;%
count++; ; {I{X}b
indexes = newint[count]; rVQ:7\=Z
for(int i = 0; i < count; i++){ { +
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indexes = pageSize * d^]wqn pf
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} pl fz)x3
}else{ 4,H}'@Db}
this.totalCount = 0; FjiLc=RXXz
} ?Dd2k%o
} hpWAQ#%oHm
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publicint[] getIndexes(){ qK|r+}g|&
return indexes; A!iH g__/t
} 4CX *
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publicvoid setIndexes(int[] indexes){ L=Dx$#|
this.indexes = indexes; s}|IRDpp
} *i5&x/ds
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publicint getStartIndex(){ s_`wLQ7e
return startIndex; XZp(Po:H
} ( }JX ]-
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publicvoid setStartIndex(int startIndex){ Duptles
if(totalCount <= 0) 'O\K Wj{
this.startIndex = 0; Dvd.Q/f
elseif(startIndex >= totalCount) ^Po\:x%o
this.startIndex = indexes (nBJ,v)
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[indexes.length - 1]; ?_<ZCH
elseif(startIndex < 0) :Oq!.uO
this.startIndex = 0; B TcxBh
else{ ~&B_ Bswf
this.startIndex = indexes zKfb
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[startIndex / pageSize]; *#UDMoz<
} 0C3Yina9
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publicint getNextIndex(){ cO(|>&tJ
int nextIndex = getStartIndex() + %5F=!(w
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pageSize; +#&2*nY
if(nextIndex >= totalCount) b;soMilz
return getStartIndex(); K3
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else ,8$;|#d
return nextIndex; u=rY
} S'E6#
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publicint getPreviousIndex(){ /jj}.X7yH
int previousIndex = getStartIndex() - [&+wW
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pageSize; krz@1[w-j
if(previousIndex < 0) hCr7%`
return0; w`#lLl
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else o`RTvGXk
return previousIndex; C=PBF\RkKu
} ;2dhue
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} HCHC~FNd
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抽象业务类 /}M@
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java代码: f0wQn09
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/** _HGDqjL
* Created on 2005-7-12 MHxv@1)K|Y
*/ I9>1WT<Yy
package com.javaeye.common.business; 5[/*UtB
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import java.io.Serializable; [ HNGTde&
import java.util.List; |L`w4;
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import org.hibernate.Criteria; xTAC&OCk^[
import org.hibernate.HibernateException; U4LOe}Ny
import org.hibernate.Session; aNXu"US+Sp
import org.hibernate.criterion.DetachedCriteria; NsJUruN
import org.hibernate.criterion.Projections; !Rsx)
import )*s.AFu]7x
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org.springframework.orm.hibernate3.HibernateCallback; 6"A|)fz
import 1YM04*H
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org.springframework.orm.hibernate3.support.HibernateDaoS Keof{>V=CA
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upport; y@_4OkR@
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import com.javaeye.common.util.PaginationSupport; 39m#
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public abstract class AbstractManager extends #;^.&2Lt
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HibernateDaoSupport { oPWvZI(\&
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privateboolean cacheQueries = false; T+2?u.{I
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privateString queryCacheRegion; $fC= v
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publicvoid setCacheQueries(boolean mH}AVje{
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cacheQueries){ XM8C{I1
this.cacheQueries = cacheQueries; 40q8,M
} U 2\{(y
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publicvoid setQueryCacheRegion(String wF38c]r`\<
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queryCacheRegion){ zo]7#
this.queryCacheRegion = /{qr~7k,oQ
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queryCacheRegion; ^(&:=r.PC
} o.k#|q
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publicvoid save(finalObject entity){ 0Y"==g+>f
getHibernateTemplate().save(entity); pK$^@~DE
} teM&[U
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publicvoid persist(finalObject entity){ 5IMh$!/uc
getHibernateTemplate().save(entity); ICV67(Ui
} S!g&&RDx
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publicvoid update(finalObject entity){ T8qG9)~3
getHibernateTemplate().update(entity); n}?kQOg0/
} Ui1K66{
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publicvoid delete(finalObject entity){ \8F$85g
getHibernateTemplate().delete(entity); ikm4Y`c
} ]`:Fj|>
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publicObject load(finalClass entity, $wX5`d1
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finalSerializable id){ l}<s~ip
return getHibernateTemplate().load 9prG@
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(entity, id); i4Fw+Z
} {OQ sGyR?
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publicObject get(finalClass entity, #UGbSOoCtn
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finalSerializable id){ ,
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return getHibernateTemplate().get [& hdyLt
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(entity, id); Gzm[4|nO^
} v8wN2[fC
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publicList findAll(finalClass entity){ I#9K/[
return getHibernateTemplate().find("from ,~G[\2~p
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" + entity.getName()); l kl#AH
} ExnszFX*
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publicList findByNamedQuery(finalString Wje7fv
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namedQuery){ ^&Qaf:M
return getHibernateTemplate {O!fV<Vx 9
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().findByNamedQuery(namedQuery); oXz:zoNQ
} -4HI9Czts
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publicList findByNamedQuery(finalString query, $x`U)pv
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finalObject parameter){ \W$>EH
return getHibernateTemplate qP]Gl--q{
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().findByNamedQuery(query, parameter); 57r\s8
} ?DpMR/
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publicList findByNamedQuery(finalString query, ok[R`99
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finalObject[] parameters){ 9^jO^[>
return getHibernateTemplate [c3hwogf:
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().findByNamedQuery(query, parameters); .>H7i`1D`
} 4$y|z{[<
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publicList find(finalString query){ )_f
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return getHibernateTemplate().find i>0bI^H
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(query); 242lR0#aY
} Y.&z $+
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publicList find(finalString query, finalObject uRUysLIw
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parameter){ w+ _'BU1#
return getHibernateTemplate().find rKR<R(=!=
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(query, parameter); 1L^\TC
} +n%WmRf6!
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public PaginationSupport findPageByCriteria McA,
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(final DetachedCriteria detachedCriteria){ d)q{s(<;
return findPageByCriteria b}k`'++2,
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); 3pl.<;9r
} ^8We}bs-c
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public PaginationSupport findPageByCriteria 4J_18.JHP
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(final DetachedCriteria detachedCriteria, finalint m#8mU,7
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startIndex){ 3B;B#0g50
return findPageByCriteria |ss_<
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(detachedCriteria, PaginationSupport.PAGESIZE, ;i Ud3'*
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startIndex); "9R3S[
} tohYwXN
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public PaginationSupport findPageByCriteria =1LrU$\
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(final DetachedCriteria detachedCriteria, finalint ~Edm VEu
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pageSize, +}*]9nG
finalint startIndex){ 6``!DMDt/P
return(PaginationSupport) YZ'gd10T
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getHibernateTemplate().execute(new HibernateCallback(){ G?YKm1:w
publicObject doInHibernate lgre@M]mg
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(Session session)throws HibernateException { 6i>xCb
Criteria criteria = wYS4#7
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detachedCriteria.getExecutableCriteria(session); ;Wb
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int totalCount = t[0gN:s
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((Integer) criteria.setProjection(Projections.rowCount cojuU=i
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()).uniqueResult()).intValue(); Tpkm\_
criteria.setProjection OSsdB%bIu`
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(null); P>jlFm
List items = "TG}aS
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criteria.setFirstResult(startIndex).setMaxResults kM@8RAxA
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(pageSize).list(); K]Ed-Tz8QZ
PaginationSupport ps = YHg4WW$
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new PaginationSupport(items, totalCount, pageSize, kg9ZSkJr
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startIndex); Z>M0[DJ_
return ps; 8CwgV
} F8/4PB8-
}, true); Q>= :$I
} 8"RX~Igf
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public List findAllByCriteria(final L?<V KT
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DetachedCriteria detachedCriteria){ E+F!u5u
return(List) getHibernateTemplate 1^Ci$ra
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().execute(new HibernateCallback(){ Z*x Q"+\
publicObject doInHibernate i>>_S&!9p
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(Session session)throws HibernateException { XeJx/'9o{
Criteria criteria = "J7=3$CA
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detachedCriteria.getExecutableCriteria(session); YzsHec
return criteria.list(); So,EPB+
} OG/R6k.
}, true); `3\5&B