Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ;1AXu/
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 C116c"
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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 hZ`<ID
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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 !*e1F9k
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分页支持类: `F`{s`E)
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java代码: Q].p/-[(
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package com.javaeye.common.util; %WF]mF T_
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import java.util.List; #IR,KX3]A
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publicclass PaginationSupport { lG5KZ[/Or
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publicfinalstaticint PAGESIZE = 30; Ji4JP0
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privateint pageSize = PAGESIZE; Qo~|[]GE
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privateList items; ?DGg.2f
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privateint totalCount;
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privateint[] indexes = newint[0]; 7epil
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privateint startIndex = 0; Y'<wE2ZL)
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public PaginationSupport(List items, int MY}/h@
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totalCount){ Z4oD6k5oc
setPageSize(PAGESIZE); uaE,F^p
setTotalCount(totalCount); K7X*N
setItems(items); #&X5Di[A
setStartIndex(0); B$M4f7
} 5PsjGvm.%
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public PaginationSupport(List items, int 3rBID
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totalCount, int startIndex){ 6of9lO:
setPageSize(PAGESIZE); bFhZSk)
setTotalCount(totalCount); 1-$+@Xl
setItems(items); ~O~iP8T
setStartIndex(startIndex); tOX-vQ
} G.r .Z0
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public PaginationSupport(List items, int 0V?7'Em
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totalCount, int pageSize, int startIndex){ z\"9T?zoo
setPageSize(pageSize); `A9fanh
setTotalCount(totalCount); 6L rI,d
setItems(items); `=S%!akj
setStartIndex(startIndex); KZO[>qC"R
} &kcmkRRG
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publicList getItems(){ 4
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return items; ht#,v5oG>f
} \x:} |
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publicvoid setItems(List items){ fw
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this.items = items; cc3/XBo
} I5)$M{#a
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publicint getPageSize(){ v,Zoy|Lu
return pageSize; hYh~%^0dt
} F|cli
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publicvoid setPageSize(int pageSize){ f|ERZN`uB
this.pageSize = pageSize; Nf)SR#;
} G `B=:s]
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publicint getTotalCount(){ 4cJ/XgX
return totalCount; (v:8p!QN
} b^()[4M;
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publicvoid setTotalCount(int totalCount){ T!pZj_ h=
if(totalCount > 0){ "?W8o[c+
this.totalCount = totalCount; ">S1,rhgS
int count = totalCount / i }Zz[b
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pageSize; %|f@WxNrU
if(totalCount % pageSize > 0) 7 n^1H[q
count++; olXfR-2>1
indexes = newint[count]; Bsd~_y}8
for(int i = 0; i < count; i++){ wAzaxeV=
indexes = pageSize * dldS7Q
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} nr(C*E
}else{ IlI5xkJ(
this.totalCount = 0; 0 N0< 4b
} f9IqcCSW
} /rK/l
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publicint[] getIndexes(){ S@~ReRew2
return indexes; jMX|1b
} fZJM'+J@A
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publicvoid setIndexes(int[] indexes){ _G/uDP%
this.indexes = indexes; l <Z7bo
} YG*}F|1
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publicint getStartIndex(){ AP4s_X+=
return startIndex; *TCV}=V G
} 3RcnoXX_
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publicvoid setStartIndex(int startIndex){ *7#5pT~
if(totalCount <= 0) C8}=fa3u
this.startIndex = 0; $?LegX
elseif(startIndex >= totalCount) ~*~aFf5
this.startIndex = indexes sqRvnCD!
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[indexes.length - 1]; hQvI}
elseif(startIndex < 0) ltkA7dUbu
this.startIndex = 0; .R@XstQ
else{ c{x:'@%/s'
this.startIndex = indexes "{~^EQq,
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[startIndex / pageSize]; 4CS$%Cu\?w
} g"g3|$#Ej|
} e. E$Ej]w
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publicint getNextIndex(){ 5B3sRF}
int nextIndex = getStartIndex() + f Avh!g
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pageSize; GNW.n(a
if(nextIndex >= totalCount) J$`5KbT3
return getStartIndex(); wX!0KxR/Z
else _b *gg
return nextIndex; f>Tn#OW
} >yLdrf
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publicint getPreviousIndex(){ `+0P0(bn
int previousIndex = getStartIndex() - p>+Q6o9O
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pageSize; 20:![/7:!
if(previousIndex < 0) bJynUZ
return0; ^^YP kh6sS
else w.+G+r=
return previousIndex; iWkC:fQz
} V%`\x\Xat
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} ]7q|) S\
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抽象业务类 `<hMrhfh
java代码: e=_Ng
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/**
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* Created on 2005-7-12 L3s"L.G
*/ I`x[1%y2 F
package com.javaeye.common.business; D&DbxTi
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import java.io.Serializable; +{%)}?F
import java.util.List; m<J:6^H@
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import org.hibernate.Criteria; N7^sn!JB
import org.hibernate.HibernateException; z]&?}o
import org.hibernate.Session; `:Oje
import org.hibernate.criterion.DetachedCriteria; N).'>
import org.hibernate.criterion.Projections; %Vk77(
import u7},+E)+B
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org.springframework.orm.hibernate3.HibernateCallback; vb9C
import fGWXUJ
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org.springframework.orm.hibernate3.support.HibernateDaoS s|k&@jH)
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upport; x
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import com.javaeye.common.util.PaginationSupport; X3?RwN:P
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public abstract class AbstractManager extends F!-%v5.y
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HibernateDaoSupport { FbXur- et^
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privateboolean cacheQueries = false; *JZlG%z
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privateString queryCacheRegion; s@6Jz\<E
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publicvoid setCacheQueries(boolean 1*.*\4xo
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cacheQueries){ *&hbfsP:
this.cacheQueries = cacheQueries; e$&n)>%
} RYdI$&]
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publicvoid setQueryCacheRegion(String as@?
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queryCacheRegion){ $)d34JM
this.queryCacheRegion = d\25
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queryCacheRegion; +=sw&DH
} nYe:$t3F=
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publicvoid save(finalObject entity){ )KGz -!1c
getHibernateTemplate().save(entity); &y7xL-xP
} `>OKV;~{z
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publicvoid persist(finalObject entity){ ~wO-Hgd
getHibernateTemplate().save(entity); E()%IC/R
} ^]Z@H/]H
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publicvoid update(finalObject entity){ =|2F?
getHibernateTemplate().update(entity); ^'fgQyj
} jmcys
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publicvoid delete(finalObject entity){ T\bpeky~
getHibernateTemplate().delete(entity); >?6HUUQ
} :Gew8G
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publicObject load(finalClass entity, ) TRUx
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finalSerializable id){ ;--D?Gs]Qr
return getHibernateTemplate().load be$']}cP
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(entity, id); CxSh.$l
} ]2
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publicObject get(finalClass entity, j(k}NWPH
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finalSerializable id){ /Gn0|]KI
return getHibernateTemplate().get E VC]B}
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(entity, id); pMAP/..+2
} |~PaCw8-ge
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publicList findAll(finalClass entity){ 3s67)n
return getHibernateTemplate().find("from OiS\tK?|GV
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" + entity.getName()); <q>d@Foi
} [J(b"c6
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publicList findByNamedQuery(finalString pOh<I{r1
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namedQuery){ E.+%b;Eqe
return getHibernateTemplate Z0<s
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().findByNamedQuery(namedQuery); 1iNMgA
} l2}X\N&q
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publicList findByNamedQuery(finalString query, MvnQUZ
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finalObject parameter){ os&FrtDg
return getHibernateTemplate MLg{Y?@
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().findByNamedQuery(query, parameter); ,D]g]#Lq
} bN03}&I
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publicList findByNamedQuery(finalString query, Yyr9Kj:
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finalObject[] parameters){ *Ms"{+C
return getHibernateTemplate -sZb+2tDa
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().findByNamedQuery(query, parameters); E^br-{|{
} )tnbl"0
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publicList find(finalString query){ 'Cz*p,
return getHibernateTemplate().find yU4mS;GX
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(query); YD;d*E%t
} ",J&UTUh
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publicList find(finalString query, finalObject %KkC1.yu<
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parameter){ Y_n3O@,
return getHibernateTemplate().find -2 >s#/%
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(query, parameter); peT91b
} 8q9ATB-^>
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public PaginationSupport findPageByCriteria "DfjUk
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(final DetachedCriteria detachedCriteria){ ,(zV~-:9
return findPageByCriteria x<Gjr}
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); :KA)4[#;W
} FQ1B%u|
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public PaginationSupport findPageByCriteria |iX>hJSl
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(final DetachedCriteria detachedCriteria, finalint D4|Ajeo;1
)h&@}#A09
startIndex){ sxph#E%
return findPageByCriteria }r,xx{.u7
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(detachedCriteria, PaginationSupport.PAGESIZE, }2"W0ZdWD
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startIndex); u)I\R\N
} -3v\ c~
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public PaginationSupport findPageByCriteria 6Aq]I$
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(final DetachedCriteria detachedCriteria, finalint 3di;lzGq
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pageSize, e98QT9
finalint startIndex){ 8IQ}%|lN
return(PaginationSupport) &*ocr &
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getHibernateTemplate().execute(new HibernateCallback(){ ng9e)lU~*b
publicObject doInHibernate 8h@L_*Kr
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(Session session)throws HibernateException { kk6
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Criteria criteria = }u3|w0~c)
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detachedCriteria.getExecutableCriteria(session); fuv{2[NV
int totalCount = Ui
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((Integer) criteria.setProjection(Projections.rowCount G$V=\60a-
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()).uniqueResult()).intValue(); av|T|J/(
criteria.setProjection dhLR#m30T
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(null); BA1uo0S `S
List items = l1'v`!
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criteria.setFirstResult(startIndex).setMaxResults +
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(pageSize).list(); Gt*K:KT=L
PaginationSupport ps = l~o!(rpX
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new PaginationSupport(items, totalCount, pageSize, 0>td[f
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startIndex); y-nv#Ejr
return ps; 0 {z8pNrc
} gFHBIN;u
}, true); U!r8}@
} 1_q!E~)
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public List findAllByCriteria(final =KOi#;1
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DetachedCriteria detachedCriteria){ -_5Dk'R#`
return(List) getHibernateTemplate %|}*xMQ
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().execute(new HibernateCallback(){ \}=T4w-e
publicObject doInHibernate dLb$3!3
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(Session session)throws HibernateException { qm><}N7f
Criteria criteria = }vU/]0@,E
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detachedCriteria.getExecutableCriteria(session); P}5bSQ( a3
return criteria.list(); ^`id/
} c:0n/DC
}, true); n5UUoBv
} {c_bNYoE
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