Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 `em}vdY
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 f"emH
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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 sYlA{Z"
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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 9\F:<Bf$#
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分页支持类: $J8?!Xg
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java代码: S+LE ASOr
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package com.javaeye.common.util; NijvFT$V1
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import java.util.List; Nrp0z:
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publicclass PaginationSupport { +m Plid\
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publicfinalstaticint PAGESIZE = 30; %hcn|-"F
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privateint pageSize = PAGESIZE; biZwxP3
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privateList items; e$krA!zN
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privateint totalCount; 8 /3`rEW
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privateint[] indexes = newint[0]; ~s_n\r&23
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privateint startIndex = 0; >cm*_26;I
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public PaginationSupport(List items, int L~nVoKY*V
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totalCount){ &m@~R|
setPageSize(PAGESIZE); 1&_93
setTotalCount(totalCount); E3bS Q
setItems(items); 35/)S@
setStartIndex(0); [gK (x%
} ~V,~'W
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public PaginationSupport(List items, int 9|19ia@[\
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totalCount, int startIndex){ 9H$$Og
setPageSize(PAGESIZE); k"-2OT
setTotalCount(totalCount); V-Ebi^gz5W
setItems(items); # fvt:iE
setStartIndex(startIndex); 7]}n0*fe
} Qs24b
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public PaginationSupport(List items, int {Vy2uow0
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totalCount, int pageSize, int startIndex){ laVqI|0q
setPageSize(pageSize); [v7)xV@c
setTotalCount(totalCount); 5&}~W)"9
setItems(items); iwJeV J
setStartIndex(startIndex); zd1X(e<|{
} F/ BB]gUB
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publicList getItems(){ EA@p]+P
return items; 7GN>o@ t
} O>P792)
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publicvoid setItems(List items){ @f<q&K%FJ
this.items = items; :__z?<?(
} KW^#DI6tr
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publicint getPageSize(){ ]Puu: IG
return pageSize; E3IB> f
} S!*wK-
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publicvoid setPageSize(int pageSize){ KMFvi_8
this.pageSize = pageSize; RzPqtN
} ";:"p6?
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publicint getTotalCount(){ n}NO"eF>-s
return totalCount; tbbZGyg5b
} v(uYso_
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publicvoid setTotalCount(int totalCount){ \[m{ &%^G
if(totalCount > 0){ FdT@}
this.totalCount = totalCount; $LxfdSa
int count = totalCount / ;MD6iBD
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pageSize; eBw6k09C+
if(totalCount % pageSize > 0)
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count++; ][Ne;F6
indexes = newint[count]; lFHj]%Y
for(int i = 0; i < count; i++){ {rp5qgVE<
indexes = pageSize * :el]IH
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} Q>`|{m
}else{ 8t{-
this.totalCount = 0; 6pyLb3[e
} Q};g~b3
} u;{,,ct
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publicint[] getIndexes(){ sn.Xvk%75
return indexes; mGf@J6wGz
} :nk $?5ib
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publicvoid setIndexes(int[] indexes){ "?_r?~sJx
this.indexes = indexes; !'E{D`A9
} 0taopDi;d
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publicint getStartIndex(){ ?V3kIb
return startIndex; } v#Tm
} La$*)qD,
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publicvoid setStartIndex(int startIndex){ 8KQD
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if(totalCount <= 0) &<Gs@UX~w
this.startIndex = 0; MoIq)5/
elseif(startIndex >= totalCount) 7 (}gs?&w
this.startIndex = indexes T@V<J'
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[indexes.length - 1]; ?`jh5Kw%y
elseif(startIndex < 0) Xbm\"g \
this.startIndex = 0; n*7Ytz3#'
else{ x>Hg.%/c[
this.startIndex = indexes 6gUcoDD
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[startIndex / pageSize]; s\7]"3:wD
} UOi[#L@N
} y81B3`@
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publicint getNextIndex(){ IaDN[:SX
int nextIndex = getStartIndex() + z%$,F9/
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pageSize; Z?IwR
if(nextIndex >= totalCount) GqYE=Q
return getStartIndex(); (]wd8M
else .?C-J
return nextIndex; cjTV~(i'4A
} .fZ*N/
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publicint getPreviousIndex(){ !KYX\HRW
int previousIndex = getStartIndex() - ,!m][
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pageSize; !N, Oe<
if(previousIndex < 0) hB]\vA7
return0; znNJ?
else *G]zN "Y
return previousIndex; Tc{n]TV
} "JHdF&
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} u0Nag=cU
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抽象业务类 ]VarO'
java代码: 4 w$f-
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/** `pB]_"b
* Created on 2005-7-12 R~=_,JUW
*/ ZS@ Gt
package com.javaeye.common.business; [;rty<Z^b
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import java.io.Serializable; g~>g])
import java.util.List; DU@ZLk3
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import org.hibernate.Criteria; L?WF[nFR
import org.hibernate.HibernateException; G;^}, %<
import org.hibernate.Session;
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import org.hibernate.criterion.DetachedCriteria; G4VdJ(_
import org.hibernate.criterion.Projections; :n@j"-HA
import 9KqN .
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org.springframework.orm.hibernate3.HibernateCallback; @raw8w\Zj+
import @W{VT7w
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org.springframework.orm.hibernate3.support.HibernateDaoS Py&DnG'H
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upport; o~
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import com.javaeye.common.util.PaginationSupport; +Wr"c
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public abstract class AbstractManager extends ^rHG#^hA
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HibernateDaoSupport { {giKC)!
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privateboolean cacheQueries = false; -uE2h[X|
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privateString queryCacheRegion; LjE@[@d
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publicvoid setCacheQueries(boolean aJQx"6c?
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cacheQueries){ ~+JEl%
this.cacheQueries = cacheQueries; XAn{xNpz
} ucVWvXCr
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publicvoid setQueryCacheRegion(String s,tZi6Z=%E
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queryCacheRegion){ lphELPh
this.queryCacheRegion = *{ =5AW}o
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queryCacheRegion; b1("(,r/`
} tHvc*D
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publicvoid save(finalObject entity){ YY&3M
getHibernateTemplate().save(entity); ^KKU@ab9
} nb
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publicvoid persist(finalObject entity){ "agc*o~!F
getHibernateTemplate().save(entity); M-K.[}}-d
} iva?3.t
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publicvoid update(finalObject entity){ 1X5*V!u
getHibernateTemplate().update(entity); zoj3w|G
} T:/68b*H\:
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publicvoid delete(finalObject entity){ vlHE\%{
getHibernateTemplate().delete(entity); ?|&plf|
} x[ sSM:
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publicObject load(finalClass entity, Ap{2*o
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finalSerializable id){ P3due|4M
return getHibernateTemplate().load #4?(A[]>H
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(entity, id); qkM<t?uS
} x vi&d1
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publicObject get(finalClass entity, cH5@Jam
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finalSerializable id){ g _2m["6*
return getHibernateTemplate().get )2U#<v^
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(entity, id); 'G.^g}N1
} NXwlRMbo
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publicList findAll(finalClass entity){ |bHId!d
return getHibernateTemplate().find("from v4:g*MD?~
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" + entity.getName()); L5"|RI}
} 0.& B
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publicList findByNamedQuery(finalString qep<7 QO
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namedQuery){ w|"cf{$^x
return getHibernateTemplate 8?n6\cF
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().findByNamedQuery(namedQuery); m&'z|eN
} ^'g1? F$_
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publicList findByNamedQuery(finalString query, *@M7J
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finalObject parameter){ t`"]"Re
return getHibernateTemplate `&)khxT/
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().findByNamedQuery(query, parameter); 0@ -3U{Q
} p'`SYEY@Z
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publicList findByNamedQuery(finalString query, C ?^si
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finalObject[] parameters){ . PzlhTL7
return getHibernateTemplate 2Z ?
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().findByNamedQuery(query, parameters); VTDp9s
} 5UFR^\e
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publicList find(finalString query){ /r4QDwu
return getHibernateTemplate().find aZe[Nos
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(query); Qi_De
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} G1Qc\mp
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publicList find(finalString query, finalObject u}Q@u!~e9
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parameter){ uW.)(l
return getHibernateTemplate().find nDR)UR
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(query, parameter); u-CC UMR
} a;Nj'M~U
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public PaginationSupport findPageByCriteria ~%6GF57gC
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(final DetachedCriteria detachedCriteria){ $/sQatic
return findPageByCriteria "}"Bvp^
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); 29+p|n
} (_}w4N#
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public PaginationSupport findPageByCriteria /<(d.6T[}:
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(final DetachedCriteria detachedCriteria, finalint =h~\nTN
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startIndex){ &^HqbLz
return findPageByCriteria D4:c)}
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(detachedCriteria, PaginationSupport.PAGESIZE, BF*]l8p
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startIndex); W_zv"c
} WQ\H2go
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public PaginationSupport findPageByCriteria >*TFM[((Y)
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(final DetachedCriteria detachedCriteria, finalint ^&o38=70*
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pageSize, "z
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finalint startIndex){ 9zj^\-FA_l
return(PaginationSupport) C+B`A9
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getHibernateTemplate().execute(new HibernateCallback(){ w[>/(R7im
publicObject doInHibernate {+V1>6
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(Session session)throws HibernateException { Q\H_lB
Criteria criteria = {DPobyvwFk
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detachedCriteria.getExecutableCriteria(session); XYbc1+C
int totalCount = _)q,:g~fu
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((Integer) criteria.setProjection(Projections.rowCount 1D
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()).uniqueResult()).intValue(); O
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criteria.setProjection Kt,ENbF
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(null); aqTMOWyeu
List items = EUvxil
} k[gR I]
criteria.setFirstResult(startIndex).setMaxResults qDqgU
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(pageSize).list(); Pv.z~~lY
PaginationSupport ps = $u"t/_%
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new PaginationSupport(items, totalCount, pageSize, ]M|Iy~
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startIndex); ,+0>p
return ps; 9JHu{r"M
} W/PZD (
}, true); sR`WV6!9
} "{0
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public List findAllByCriteria(final +tz^ &(
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DetachedCriteria detachedCriteria){ lNSB "S
return(List) getHibernateTemplate hP4*S^l
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().execute(new HibernateCallback(){ lx<]v^
publicObject doInHibernate X@u-n_
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(Session session)throws HibernateException { Ku{DdiTg>
Criteria criteria = L]o
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detachedCriteria.getExecutableCriteria(session); gB!K{ Io'
return criteria.list(); m:77pE&o
} @g*=xwve=~
}, true); f`X#1w9
} &xF 2!t`
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public int getCountByCriteria(final gt3;Xi
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DetachedCriteria detachedCriteria){ =N-,.{`
Integer count = (Integer) oWVlHAPj
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getHibernateTemplate().execute(new HibernateCallback(){ ~Tv
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publicObject doInHibernate Aj06"ep
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(Session session)throws HibernateException { PjEKZHHz
Criteria criteria = ]XEkQ
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detachedCriteria.getExecutableCriteria(session); GI}h)T
return zT|]!',
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