Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 YKK*ER0
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 B/Ws_Kv
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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 +k R4E23:
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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 4Ftu
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分页支持类: ZXPX,~ 5o
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java代码: o.`5D%}i
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package com.javaeye.common.util; [0("Q;Ec[j
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import java.util.List; 9H1rO8k
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publicclass PaginationSupport { ?:eV%`7
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publicfinalstaticint PAGESIZE = 30; gI|~|-'
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privateint pageSize = PAGESIZE; \o3gKoL%
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privateList items; ba9?(+i$h
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privateint totalCount; 8zq=N#x
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privateint[] indexes = newint[0]; ChQxa
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privateint startIndex = 0; G=bCNn<
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public PaginationSupport(List items, int I)HPO,7
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totalCount){ >^{yF~(
setPageSize(PAGESIZE); j_j]"ew)
setTotalCount(totalCount); j B{8u&kz)
setItems(items); >=w)x,0yX
setStartIndex(0); 2MK-5Kg
} dlnX_+((KC
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public PaginationSupport(List items, int @>7%qS
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totalCount, int startIndex){ V0Hj8}l;M
setPageSize(PAGESIZE); %B?=q@!QWn
setTotalCount(totalCount); iH'p>s5L
setItems(items); l;E(I_
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setStartIndex(startIndex); w&.aQGR#
} 1k^oS$UT
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public PaginationSupport(List items, int 2st3
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totalCount, int pageSize, int startIndex){ :Llb< MY2
setPageSize(pageSize); (**oRwr%
setTotalCount(totalCount); ]eV8b*d6
setItems(items); ?gXp*>Kg[
setStartIndex(startIndex); g0E'g
} I]_5}[I
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publicList getItems(){ Zj
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return items; 9A#i_#[R
} >8[Z.fX
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publicvoid setItems(List items){ y>ktcuML
this.items = items; eszG0Wu
} ~F#j#n(=`q
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publicint getPageSize(){ !p/goqT~dY
return pageSize; 0tJZ4(0
} tT._VK]o&R
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publicvoid setPageSize(int pageSize){ o#N+Y?O
this.pageSize = pageSize; @'|~v<<WZ
} 6wg^FD_Q
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publicint getTotalCount(){ Ws12b$
return totalCount; 5Ynd c)Z
} u]G\H!WkQ
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publicvoid setTotalCount(int totalCount){ Qv ?"b
if(totalCount > 0){ #s9aI_
this.totalCount = totalCount; ^kSqsT"
int count = totalCount / CU~PT.
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pageSize; iJ|uvPCE
if(totalCount % pageSize > 0) Y|/ 8up
count++; VS|2|n1<6
indexes = newint[count]; YHl;flv
for(int i = 0; i < count; i++){ J,6yYIq
indexes = pageSize * HOJV,9v N
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} /<BI46B\
}else{ *n"{J(Jt`
this.totalCount = 0; A_UjC`
} 8JUwf
} 4`=mu}Y2
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publicint[] getIndexes(){ kvj#c
return indexes; H%lVl8oQ
} W(/h Vt
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publicvoid setIndexes(int[] indexes){ XB5DPx
this.indexes = indexes; \.}c9*)
} 9MqGIOQ${j
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publicint getStartIndex(){ Vf1^4t
return startIndex; Dum9lj
} -D~%|).'
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publicvoid setStartIndex(int startIndex){ K~EmD9
if(totalCount <= 0) v(%*b,^
this.startIndex = 0; -H-~;EzU
elseif(startIndex >= totalCount) r,2g^K)6
this.startIndex = indexes 0Y5_PTWb+Y
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[indexes.length - 1]; BfiD9ka-z
elseif(startIndex < 0) ~7Ux@Sx;
this.startIndex = 0; yEQs:v6L~
else{ /2VJX@h
this.startIndex = indexes FXU8[j0P_G
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[startIndex / pageSize]; ku
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} 0Wp|1)ljA
} mRK>U$v
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publicint getNextIndex(){ ]
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int nextIndex = getStartIndex() + |(^PS8wG
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pageSize; |
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if(nextIndex >= totalCount) IO:G1;[/2L
return getStartIndex(); Y\'}a+:@Ph
else +x}<IS8
return nextIndex; ?|Zx!z ($
} bi;1s'Y<D
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publicint getPreviousIndex(){ Rbv;?'O$L
int previousIndex = getStartIndex() - "-V"=t'
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pageSize; Eu04e N
if(previousIndex < 0) seeBS/%
return0; El"Q'(:/U
else LBP`hK:>W~
return previousIndex; o*hF<D$Y
} FHI ;)wn=
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} cj5+NM"
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抽象业务类 koi^l`B$
java代码: Pg7Yp2)Oli
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/** ^_mj
* Created on 2005-7-12 y4fdq7i~}9
*/ 9=2$8JN=(l
package com.javaeye.common.business; 0_t!T'jr7
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import java.io.Serializable; qJUK_6|3
import java.util.List; y:l\$pGC%
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import org.hibernate.Criteria; $ L]lHji
import org.hibernate.HibernateException; GWip-wI
import org.hibernate.Session; KKf
import org.hibernate.criterion.DetachedCriteria; P7/X|M z
import org.hibernate.criterion.Projections; FaJ &GOM,
import W
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org.springframework.orm.hibernate3.HibernateCallback; k|d+#u[Mj@
import jRV/A!4
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org.springframework.orm.hibernate3.support.HibernateDaoS iAU@Yg`pt
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upport; >[*qf9$
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import com.javaeye.common.util.PaginationSupport; <c/5b]No
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public abstract class AbstractManager extends /&94 eC
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HibernateDaoSupport { 'uEl~> l7
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privateboolean cacheQueries = false; 1|wL\I
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privateString queryCacheRegion; N] sAji*
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publicvoid setCacheQueries(boolean HyWCMK6b
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cacheQueries){ D}/vLw :v
this.cacheQueries = cacheQueries; a:6m7U)P#5
} !C:$?oU
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publicvoid setQueryCacheRegion(String 5XBH$&Td
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queryCacheRegion){ [cp+i^f
this.queryCacheRegion =
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queryCacheRegion; BThrO d
} ?5
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publicvoid save(finalObject entity){ <UQbt N-B\
getHibernateTemplate().save(entity); '."ed%=MC
} uW36;3[f#1
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publicvoid persist(finalObject entity){ n7-6-
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getHibernateTemplate().save(entity); <e</m)j
} B`J~^+`[*
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publicvoid update(finalObject entity){ CizX<Cr}
getHibernateTemplate().update(entity); 3/n5#&c\4
} Jz e:[MYS
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publicvoid delete(finalObject entity){ )P|),S,;Z
getHibernateTemplate().delete(entity); "LTad`]<Ro
} s!7y
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publicObject load(finalClass entity, }U"&8%PZr
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finalSerializable id){ WI-1)1t
return getHibernateTemplate().load '1s0D]
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(entity, id); u:_,GQ )\
} ;;N9>M?b
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publicObject get(finalClass entity, I9hK }D
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finalSerializable id){ |8tilOqI
return getHibernateTemplate().get `RL"AH:+
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(entity, id); ;hN!s`vq
} _>X+ZlpU:
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publicList findAll(finalClass entity){ <B6H. P =
return getHibernateTemplate().find("from dVT$ VQg
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" + entity.getName()); l]l'4@1
} 338k?nHxv
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publicList findByNamedQuery(finalString p4
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namedQuery){ vT,AMja
return getHibernateTemplate 3m!X/u
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().findByNamedQuery(namedQuery); )
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} Fyatd
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publicList findByNamedQuery(finalString query, 6zuTQ^pz
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finalObject parameter){ %^1V4
return getHibernateTemplate <1${1A <Wa
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().findByNamedQuery(query, parameter); N~zdWnSZ@G
} #fn)k1
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publicList findByNamedQuery(finalString query, pYmk1!]/
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finalObject[] parameters){ u^8{Z;mm
return getHibernateTemplate
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().findByNamedQuery(query, parameters); :emiQ
} Iom'Y@x
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publicList find(finalString query){ y,,dCca
return getHibernateTemplate().find 4yA+h2
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(query); 8\A#CQ5b
} HJ[c M6$2
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publicList find(finalString query, finalObject a fW@T2
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parameter){ ?Z[[2\DR
return getHibernateTemplate().find j[J-f@F \Y
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(query, parameter); wc^tgE
} h( u8&MHx
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public PaginationSupport findPageByCriteria ag;pN*z
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(final DetachedCriteria detachedCriteria){ "
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return findPageByCriteria yEoF4bt
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); 9ZsVy
} w4{<n/"
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public PaginationSupport findPageByCriteria 3J|F?M"N7
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(final DetachedCriteria detachedCriteria, finalint V1`o%;j
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startIndex){ K+K#+RBK
return findPageByCriteria :g=qz~2Xk
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(detachedCriteria, PaginationSupport.PAGESIZE, j[G
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startIndex); Y0dEH^I
} x,@B(9No
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public PaginationSupport findPageByCriteria V]e 8a"/[{
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(final DetachedCriteria detachedCriteria, finalint /cQueUME`
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pageSize, ND#Yenye
finalint startIndex){ i0kak`x0
return(PaginationSupport) }t=!(GOb}
}9# r0Vja
getHibernateTemplate().execute(new HibernateCallback(){ pis`$_kmwV
publicObject doInHibernate 1N#|
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(Session session)throws HibernateException { S8wLmd>
Criteria criteria = N&+x+;Kx
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detachedCriteria.getExecutableCriteria(session); :tB1D@Cb6
int totalCount = w3obIJm
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((Integer) criteria.setProjection(Projections.rowCount v,{
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()).uniqueResult()).intValue(); bL+_j}{:N
criteria.setProjection f<fXsSv(
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(null); r,1!?s^L
List items = }mYx_=+VX
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criteria.setFirstResult(startIndex).setMaxResults $m{:C;UH
vzs)[AD
(pageSize).list(); BB!THj69a6
PaginationSupport ps = ,,&*:<Q
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new PaginationSupport(items, totalCount, pageSize, 6azGhxh
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startIndex); $=8
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return ps; %G_B^p4
} nn:.nU|I
}, true); Vvn2 Ep
} 2~1SQ.Q<RY
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public List findAllByCriteria(final gx8ouOh
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DetachedCriteria detachedCriteria){ $m%fwB
return(List) getHibernateTemplate mAj?>;R2$2
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().execute(new HibernateCallback(){ V6&!9b
publicObject doInHibernate Yz/md1T$
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(Session session)throws HibernateException { U9:zVy
Criteria criteria = RK'\C\gMDu
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detachedCriteria.getExecutableCriteria(session); hz;G$cuEE
return criteria.list(); h-#6av:
} Ic"ybj`
}, true); QT<
}]
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} 1R{!]uh
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public int getCountByCriteria(final X<`
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DetachedCriteria detachedCriteria){ x=hiQ>BIO0
Integer count = (Integer) pMx*F@&nU
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getHibernateTemplate().execute(new HibernateCallback(){ &I+5
publicObject doInHibernate MSQEO4ge
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(Session session)throws HibernateException { 3nIU1e
Criteria criteria = 0_95|3kc
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detachedCriteria.getExecutableCriteria(session); +qtJaYf/0
return zU kgG61
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criteria.setProjection(Projections.rowCount BOb">6C
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()).uniqueResult(); @w#-aGJO
} q1$N>;&
}, true); p*R;hU
return count.intValue(); }{K)
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} W7R<