Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 H|wP8uQC
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 s/C'f4
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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 NW 2`)e'
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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 )78T+7Kq
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分页支持类: +`{OOp=
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java代码: udLI AV*
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package com.javaeye.common.util; {Y Y,{H
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import java.util.List; 2ag8?#
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publicclass PaginationSupport { NY^0$h
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publicfinalstaticint PAGESIZE = 30; PRTjXq6)5
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privateint pageSize = PAGESIZE; <.gDg?'3
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privateList items; 7dACbqba
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privateint totalCount; N1Ag.
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privateint[] indexes = newint[0]; =D Q:0w
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privateint startIndex = 0; DmLx"%H3
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public PaginationSupport(List items, int a6e{bAuq
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totalCount){ PMB4]p%o
setPageSize(PAGESIZE); T+$H[&j
setTotalCount(totalCount); /YF:WKr2
setItems(items); fTvm2+.nX
setStartIndex(0); Cg]),S
} g;8 wP5i
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public PaginationSupport(List items, int n%J=!z3
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totalCount, int startIndex){ !#O[RS
setPageSize(PAGESIZE); d>8"-$
setTotalCount(totalCount); p,$N-22a
setItems(items); Z}dK6h5+'
setStartIndex(startIndex); bP9ly9FH
} ~RuX2u-2&u
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public PaginationSupport(List items, int D@*<O=_D(
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totalCount, int pageSize, int startIndex){ 7D#y
setPageSize(pageSize); eNAxVF0
setTotalCount(totalCount); V<0iYi;4=
setItems(items); +)j ll#}?
setStartIndex(startIndex); UlE%\L0GD&
} rXX>I;`&
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publicList getItems(){ ]zSFX
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return items; k5.5$<< T
} 2Kz+COP+
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publicvoid setItems(List items){ {G:y?q'z
this.items = items; XZM3zlg*
} <'I["Um
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publicint getPageSize(){ S 13cQ?4
return pageSize; Y$r78h=4
} Iv6 q(c
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publicvoid setPageSize(int pageSize){ 2ndn8_l
this.pageSize = pageSize; G:=hg6'
} WKEb
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publicint getTotalCount(){ \WCQ>c?~
return totalCount; )#}>,,S
} hi0HEm\
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publicvoid setTotalCount(int totalCount){ @LKQ-<dZG
if(totalCount > 0){ Cl}nPUoL
this.totalCount = totalCount; do}LaUz
int count = totalCount / 4]y)YNQ(
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pageSize; N6Ud(8*
if(totalCount % pageSize > 0) !Lf<hS^
count++; $7S"4rou
indexes = newint[count]; ??rS h Mu
for(int i = 0; i < count; i++){ Z4j6z>q E
indexes = pageSize * zH8E,)
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} ,^#Jw`w^
}else{ y/lF1{}5
this.totalCount = 0; *gbK
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} \c=I!<9
} +2~kHrv
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publicint[] getIndexes(){ /d8o*m'bu!
return indexes; 'ZfgCu)St
} Bh>L"'.2
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publicvoid setIndexes(int[] indexes){ G 6sK3K
this.indexes = indexes; J!6FlcsZm
} yB*,)x0
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publicint getStartIndex(){ rl*O-S/
return startIndex;
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} +L(amq;S
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publicvoid setStartIndex(int startIndex){ bLgH3[{
if(totalCount <= 0) K2x[ApS#
this.startIndex = 0; k*.]*]
elseif(startIndex >= totalCount) 3^ Yc%
this.startIndex = indexes \oQ]=dDCd%
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[indexes.length - 1]; u2V-V#jS
elseif(startIndex < 0) 2ej7Ql_@c
this.startIndex = 0; _]Hna <Ly
else{ uy'ghF
this.startIndex = indexes
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[startIndex / pageSize]; OG,P"sv
} !d*[QD8
} ${+u-Wfau
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publicint getNextIndex(){ 30Q
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int nextIndex = getStartIndex() + 29R-Up!SVN
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pageSize; ,g`%+s7 u
if(nextIndex >= totalCount) T5BZD
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return getStartIndex(); Pf?kNJ*Tv)
else l.[pnL D
return nextIndex; ));#oQol9
} "cH RGJG#
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publicint getPreviousIndex(){ B{-7
int previousIndex = getStartIndex() - s:`i~hjq
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pageSize; G4&s_M$
if(previousIndex < 0) W+XWS,(
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else j)1y v.
return previousIndex; 7*'/E#M
} H^_,e= j
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} }fpya2Xt
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抽象业务类 K,f:X g!:
java代码: Vs>Pv$kW
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/** XGlt^<`
* Created on 2005-7-12 &}ZmT>q`$
*/ E' 5*w6
package com.javaeye.common.business; I8F+Z
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import java.io.Serializable; A 'qe2]
import java.util.List; HN47/]"*
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import org.hibernate.Criteria; g14*6O:
import org.hibernate.HibernateException; A#uU]S
import org.hibernate.Session; 4"@<bKx
import org.hibernate.criterion.DetachedCriteria; tz1@s nes
import org.hibernate.criterion.Projections; _8K+iqMZG
import Re%[t9F&
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org.springframework.orm.hibernate3.HibernateCallback; :WhJDx`j
import vwR_2u
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org.springframework.orm.hibernate3.support.HibernateDaoS tMr7d
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upport; *0WVrM06?
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import com.javaeye.common.util.PaginationSupport; ,|%KlHo^
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public abstract class AbstractManager extends EIi<g2pM(
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HibernateDaoSupport { 5f0M{J,KC
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privateboolean cacheQueries = false; o7y<Zd`Bj
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privateString queryCacheRegion; rOIb9:
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publicvoid setCacheQueries(boolean 1-RY5R}VR
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cacheQueries){ y@LI miRG
this.cacheQueries = cacheQueries; verI~M$v{
} whI{?NP
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publicvoid setQueryCacheRegion(String N,t9X7G&
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queryCacheRegion){ xBHf~:!
this.queryCacheRegion = 6]4~]!
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queryCacheRegion; $KcAB0 B8
} iIfiv<(ChM
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publicvoid save(finalObject entity){ B=Hd:P|
getHibernateTemplate().save(entity); AXw qN:P}
} EPo)7<|>
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publicvoid persist(finalObject entity){ ;R$G.5h
getHibernateTemplate().save(entity); --HDE c|
} (6%T~|a
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publicvoid update(finalObject entity){ B'/U#>/
getHibernateTemplate().update(entity); gI:g/ R
} t Cuvb
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publicvoid delete(finalObject entity){ *0U#Z]t
getHibernateTemplate().delete(entity); b"g^Jm! j
} * :"*'
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publicObject load(finalClass entity, Q`CuZkP(
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finalSerializable id){ Rtf<UhUn
return getHibernateTemplate().load 5nPvEN/
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(entity, id); z$<=8ox8e
} DpHubqWz
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publicObject get(finalClass entity, a-5UG#o
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finalSerializable id){ ,7nu;fOT[
return getHibernateTemplate().get /fQcrd7h
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(entity, id); +:A `e+\
} t!D'ZLw
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publicList findAll(finalClass entity){ ;5X6`GlS#5
return getHibernateTemplate().find("from 1I;q@g0
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" + entity.getName()); _ $PeFE2
} lh-.I]>&`
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publicList findByNamedQuery(finalString jLFaf#G]
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namedQuery){ eKP>}`
return getHibernateTemplate ,|f=2t+5X
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().findByNamedQuery(namedQuery); Jq1oQu|rs
} TjpyU:R,&|
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publicList findByNamedQuery(finalString query, e{6wFN
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finalObject parameter){ U& GPede
return getHibernateTemplate (~@.9&cBD
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} d 6Y9D=O
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publicList findByNamedQuery(finalString query, [,bJKz)a
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finalObject[] parameters){ .p{lzI9
return getHibernateTemplate h`Jc%6o
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().findByNamedQuery(query, parameters); J
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} Eq@sU?j
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publicList find(finalString query){ gvVy0nJI~
return getHibernateTemplate().find Gn7\4,C
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(query); LBio$67F
} nANl9;G
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publicList find(finalString query, finalObject M_O$]^I3w
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parameter){ A._CCou
return getHibernateTemplate().find xK8m\=#
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(query, parameter); Gb2|e.z
} v~RxtTu
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public PaginationSupport findPageByCriteria wgDAb#Zuk
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(final DetachedCriteria detachedCriteria){ W}F~vx.
return findPageByCriteria Cpzd k~+H
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); i K@RQi
} +;H=_~b
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public PaginationSupport findPageByCriteria qV=O;
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(final DetachedCriteria detachedCriteria, finalint <S_0=U
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startIndex){ oCwep^P(v
return findPageByCriteria ;E}&{w/My
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(detachedCriteria, PaginationSupport.PAGESIZE, &=zJ MGa
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startIndex); D _\HX9
} x1
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public PaginationSupport findPageByCriteria c[1{>z{G
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(final DetachedCriteria detachedCriteria, finalint .yzXw8~S
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pageSize, bil>;&h
finalint startIndex){ %to.'R
return(PaginationSupport) p-C{$5&
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getHibernateTemplate().execute(new HibernateCallback(){ ")boY/ P/w
publicObject doInHibernate 7F~Jz*,B*W
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(Session session)throws HibernateException { }zo-%#
Criteria criteria = @8YuMD;
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detachedCriteria.getExecutableCriteria(session); YU87l
int totalCount = M/[9ZgDc
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((Integer) criteria.setProjection(Projections.rowCount ^')4RU
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()).uniqueResult()).intValue(); Nf~B 1vkp
criteria.setProjection ?#5)TAW
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(null); 11J:>A5zt
List items = oOQan
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criteria.setFirstResult(startIndex).setMaxResults $~EY:
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(pageSize).list(); xAsy07J?
PaginationSupport ps = .<P@6Jq
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new PaginationSupport(items, totalCount, pageSize, e?aSM
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startIndex); yC}x6xG
return ps; g2lv4Tiq-
} )P/~{Ci:T&
}, true); lr,i5n{6
} i;)r|L`V?
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public List findAllByCriteria(final Mf:x9#
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DetachedCriteria detachedCriteria){ 5OFb9YX
return(List) getHibernateTemplate t5p#g<