Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 %u!=<yn'
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 s| p I`
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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 z>W:+W"o
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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 i}vJI}S.$
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分页支持类: ~&RTLr#\*M
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java代码: \:;MFG'
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package com.javaeye.common.util; (H_dZL
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import java.util.List; Z8E<^<|
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publicclass PaginationSupport { [Vs\r&qL
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publicfinalstaticint PAGESIZE = 30; 8R*;8y_
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privateint pageSize = PAGESIZE; G|,&V0*
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privateList items; | In{5Ek
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privateint totalCount; g@#he95 }
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privateint[] indexes = newint[0]; ?TA7i b_
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privateint startIndex = 0; SXw r$)4_
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public PaginationSupport(List items, int TOHz3=
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totalCount){ ]({-vG\m
setPageSize(PAGESIZE); SRfh{u
setTotalCount(totalCount); eu5te0{G
setItems(items); rf0Z5.
setStartIndex(0); <%^/uS
} h8(#\E
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public PaginationSupport(List items, int F>\,`wP
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totalCount, int startIndex){ Bj7*2}
setPageSize(PAGESIZE); [r`KoHwdm
setTotalCount(totalCount); Z 7@'I0;A
setItems(items); Xy(QK2|
setStartIndex(startIndex); ]y{tMC
} k^}[+IFJ
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public PaginationSupport(List items, int ~) ;4O8~.
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totalCount, int pageSize, int startIndex){ I<QUvs%e
setPageSize(pageSize); N[
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setTotalCount(totalCount); \hX,z =
setItems(items); 8sj2@d
setStartIndex(startIndex); z<eu=OD4t
} k*A(7qQA`4
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publicList getItems(){ IGTO|sT"
return items; SAnr|<Y/
} _-f LD
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publicvoid setItems(List items){ Z`*V9
this.items = items; )FwOg;=3M"
} "22./vWV|i
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publicint getPageSize(){ Q%O9DCi
return pageSize; # m|el@)
} gp9O%g3'
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publicvoid setPageSize(int pageSize){ /eHf8l
this.pageSize = pageSize; D&m1yl@\J
} XF: wsC
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publicint getTotalCount(){ rv[BL.qV
return totalCount; Fe[6Y<x+:
} ^(&2
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publicvoid setTotalCount(int totalCount){ 9y\nO)\Tv
if(totalCount > 0){ 2>"{El|PbN
this.totalCount = totalCount; X:Y1g)|K
int count = totalCount / %enJ[a%Qg
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pageSize; s;h`n$
if(totalCount % pageSize > 0) Yy
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count++; '0 Ys`Qo
indexes = newint[count]; 5 n 4/}s
for(int i = 0; i < count; i++){ 9I 6^-m@:
indexes = pageSize * >]}VD "\
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} Q\X_JZ
}else{ 'NWvQR<X
this.totalCount = 0; z*nztvY@e
} M/V"Ke"N
} P9\y~W
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publicint[] getIndexes(){ Q
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return indexes; mp3 Dc
} 5YZ\@<|rH
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publicvoid setIndexes(int[] indexes){ EHe-wC
this.indexes = indexes; dFeGibI{
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publicint getStartIndex(){ yPbOiA*lHz
return startIndex;
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} Rpcnpo
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publicvoid setStartIndex(int startIndex){ 7.5\LTM>9e
if(totalCount <= 0) uJ*|SSN~
this.startIndex = 0; IsL=DV/
elseif(startIndex >= totalCount) bv[*jr;45
this.startIndex = indexes k!@/|]3z
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[indexes.length - 1]; n O}x,sG2'
elseif(startIndex < 0) 9DXu*}
this.startIndex = 0; ;c~DBJg'|
else{ BcGQpv&x
this.startIndex = indexes `0ju=FP'u5
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[startIndex / pageSize]; OQX ek@~2
} ]
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} ,KibP_<%&P
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publicint getNextIndex(){ $0iN43WSQ
int nextIndex = getStartIndex() + 8<^6<c
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pageSize; .uagD[${
if(nextIndex >= totalCount) &4MVk3SLx#
return getStartIndex(); H+2J.&Ch
else
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return nextIndex; 'E8dkVlI
} l:+pO{7L
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publicint getPreviousIndex(){ !"J*
int previousIndex = getStartIndex() - FkECY
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pageSize; uJp}9B60_
if(previousIndex < 0) M!6bf
return0; s_h<
else yM D*>8/
return previousIndex; $X&OGTlw^
} SS~Txt75m
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} $v oyXi`*
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抽象业务类 G7/LY TT)
java代码: y<.!TULa_
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/** E:E&Wv?r
* Created on 2005-7-12 &%r#eB?7
*/ Y@\5gZ&T
package com.javaeye.common.business; t@ JPnA7~
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import java.io.Serializable; |f}NO~CA
import java.util.List; #"yf^*wX
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import org.hibernate.Criteria; S&uL9)Glb
import org.hibernate.HibernateException; d=KOV;~);
import org.hibernate.Session; /#se>4]
import org.hibernate.criterion.DetachedCriteria; 6uXYZ.A
import org.hibernate.criterion.Projections; 5)oIPHXw
import KE3
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org.springframework.orm.hibernate3.HibernateCallback; "AK3t'
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import Fi/G, [q
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org.springframework.orm.hibernate3.support.HibernateDaoS O]g+z$2o
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upport; zB$6e!fc
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import com.javaeye.common.util.PaginationSupport; N]<gHGj}
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public abstract class AbstractManager extends bX(*f>G'
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HibernateDaoSupport { X[~CLKH(
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privateboolean cacheQueries = false; Aii[=x8
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privateString queryCacheRegion; oCYD@S>h
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publicvoid setCacheQueries(boolean R,bcE4WR"
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cacheQueries){ %S#"pKE6R
this.cacheQueries = cacheQueries; 6v#G'M#r
} y)E2=JQA/
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publicvoid setQueryCacheRegion(String `7_LJ
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queryCacheRegion){ ~m?~eJK#a
this.queryCacheRegion = OJ 5 !+#>
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queryCacheRegion; WCu%@hh=h
} ZRm\d3x4
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publicvoid save(finalObject entity){ ~Wm}M
getHibernateTemplate().save(entity); <R>ZG"m {
} 8!6*|!,:?n
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publicvoid persist(finalObject entity){ p ri{vveN@
getHibernateTemplate().save(entity); ZG<!^tj
} UJ$:5*S=u
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publicvoid update(finalObject entity){ "'B%.a#k
getHibernateTemplate().update(entity); 8k^y.B
} j]"xck
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publicvoid delete(finalObject entity){ ]/Qy1,
getHibernateTemplate().delete(entity); 1<`7MN
} !cwVJe
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publicObject load(finalClass entity, !F#aodM1N
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finalSerializable id){ S)@vl^3ec
return getHibernateTemplate().load S{T d/1}
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(entity, id); ]UT|BE4v
} yGGB
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publicObject get(finalClass entity, {b0&qV
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finalSerializable id){ ?lN8~Ze
return getHibernateTemplate().get kseJm+Hc
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(entity, id); cievC,3*
} lN>C#e<]
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publicList findAll(finalClass entity){ Wo+CQH6(
return getHibernateTemplate().find("from \R\@t]>Y
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" + entity.getName()); EQ63VF
} T)
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publicList findByNamedQuery(finalString kefv=n*]l
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namedQuery){ qJXsf M6
return getHibernateTemplate h`h>H
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().findByNamedQuery(namedQuery); tb?F}MEe
} 1~5q:X
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publicList findByNamedQuery(finalString query, 5Sjr6l3Vq8
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finalObject parameter){ \btR^;_\A
return getHibernateTemplate Hn9F
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().findByNamedQuery(query, parameter); yaRcBT?
} }{wTlR.]
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publicList findByNamedQuery(finalString query, l P$r
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finalObject[] parameters){ FfxX)p1t
return getHibernateTemplate 1 73<x){
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().findByNamedQuery(query, parameters); Bq~hV;9nf
} jxnQG A
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publicList find(finalString query){ MzR1<W{ O
return getHibernateTemplate().find ?#*
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(query); =l8!VJa
} C](z#c~c
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publicList find(finalString query, finalObject EO].qN-8
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parameter){ )ew[ Ak|
return getHibernateTemplate().find aI={,\
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(query, parameter); r}oURy,5
} "B9[cDM&
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public PaginationSupport findPageByCriteria /i{tS`[F2a
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(final DetachedCriteria detachedCriteria){ !f\?c7
return findPageByCriteria 'T )Or,d
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); C{UF~
} 6wb^*dD92
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public PaginationSupport findPageByCriteria +z:CZ(fb
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(final DetachedCriteria detachedCriteria, finalint Xr?>uqY!M
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startIndex){ h_&4p=SQ
return findPageByCriteria ]{IR&{EI-
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(detachedCriteria, PaginationSupport.PAGESIZE, 8%o~4u3
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startIndex); GA|/7[I}
} `*e4m
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public PaginationSupport findPageByCriteria W\it+/
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(final DetachedCriteria detachedCriteria, finalint AH&9Nye8
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pageSize, %{R_^Y8t
finalint startIndex){ aGPqh,<QD
return(PaginationSupport) =
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getHibernateTemplate().execute(new HibernateCallback(){ $d'CBsu|<
publicObject doInHibernate i{gDW+N
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(Session session)throws HibernateException { 9;=q=O/
Criteria criteria = QF\kPk(CtD
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^
detachedCriteria.getExecutableCriteria(session); `$J'UXtGc
int totalCount = It%T7
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((Integer) criteria.setProjection(Projections.rowCount 8NnhT E
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()).uniqueResult()).intValue(); oG!6}5
criteria.setProjection F?7u~b|@{
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(null); Ll,I-BQ9
List items = z~F37]W3[
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criteria.setFirstResult(startIndex).setMaxResults [!W5}=^H
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(pageSize).list(); ]de\i=?|
PaginationSupport ps = +|6`E3j%
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new PaginationSupport(items, totalCount, pageSize, v' C@jsxM
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startIndex); *t^eNUA
return ps; }@wVW))6$
} mIvnz{_d
}, true); a_Jb>}
} [~COYjp
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public List findAllByCriteria(final rR\;G2p)
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DetachedCriteria detachedCriteria){ "9w}dQ
return(List) getHibernateTemplate 8yn4}`Nc@
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().execute(new HibernateCallback(){ gSb,s [p&+
publicObject doInHibernate +s ULo
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(Session session)throws HibernateException { /
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Criteria criteria = "mR*7o$|
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detachedCriteria.getExecutableCriteria(session); 88+
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return criteria.list(); m^Glc?g<
} "CBRPp
}, true); z|I0-1tAK
} i3P9sdTD
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public int getCountByCriteria(final K3L"^a
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DetachedCriteria detachedCriteria){ h48YDWwy
Integer count = (Integer) Yk'm?p#~
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getHibernateTemplate().execute(new HibernateCallback(){ &pL/
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publicObject doInHibernate TdFT];:
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(Session session)throws HibernateException { tb,9a!?
Criteria criteria = BZ+;n
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detachedCriteria.getExecutableCriteria(session); V&%C\ns4
return dw9T f ^V
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criteria.setProjection(Projections.rowCount M?$ZJ-
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()).uniqueResult(); ^s-25 6iI
} 8Q=ZH=SQK
}, true); s6n`?,vw
return count.intValue(); hF>u)%J/S
} g*J@[y;
} ~8{sA5y
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