Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 t0^chlJP$
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ii< /!B(
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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 BU3VXnqT[
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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 3>Ne_kY
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分页支持类: wrORyj
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java代码: Me*woCos'
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package com.javaeye.common.util; @-^jbmu^
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import java.util.List; dm;C @.ML
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publicclass PaginationSupport { n'WhCrW
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publicfinalstaticint PAGESIZE = 30; 6),U(e%
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privateint pageSize = PAGESIZE; =f{)!uW<4
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privateList items; R
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privateint totalCount; 17hFwo`
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privateint[] indexes = newint[0]; 4&)4hF
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privateint startIndex = 0; orT%lHwjL
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public PaginationSupport(List items, int 8-f2$
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totalCount){ 0uw3[,I
setPageSize(PAGESIZE); pwu8LQ3b{O
setTotalCount(totalCount); !YM;5vte+
setItems(items); #$W bYL|
setStartIndex(0); -XbO[_Wf
} Mk:k0,z
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public PaginationSupport(List items, int be@\5
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totalCount, int startIndex){ )MV`(/BC*
setPageSize(PAGESIZE); EWU(Al T
setTotalCount(totalCount); cx+li4v
setItems(items); y2_^lW%
setStartIndex(startIndex); :)~idVlV
} do-mkvk
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public PaginationSupport(List items, int Q!%C:b
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totalCount, int pageSize, int startIndex){ .aA8'/
setPageSize(pageSize); ~7kIe+V
setTotalCount(totalCount); vt(A?$j|A
setItems(items); ,JLY
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setStartIndex(startIndex); @i" ^b
} [@"7qKd1
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publicList getItems(){ J|'e.1v
return items; bwr}Ge
} &,4 3&pFU
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publicvoid setItems(List items){ 1vy*u
this.items = items; TgDx3U[
} /:<.Cn>-
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publicint getPageSize(){ RyAss0Sm^
return pageSize; Z'u:Em
} )P)Zds@F
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publicvoid setPageSize(int pageSize){ ]j^V5y"
this.pageSize = pageSize; 2c%*u {=:
} $@VQ{S
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publicint getTotalCount(){ $<]G#&F
return totalCount; C>A*L4c]F
} _QS +{
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publicvoid setTotalCount(int totalCount){ yjq~O~
if(totalCount > 0){ .lcI"%>
this.totalCount = totalCount; z 8w&;Ls
int count = totalCount / MO1t0My c
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pageSize; SK>*tKY
if(totalCount % pageSize > 0) /q3]AVV
count++; eM>f#M
indexes = newint[count]; #]vy`rv
for(int i = 0; i < count; i++){ e>FK5rz
indexes = pageSize * UNc[h&@_
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}
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}else{ h_SDW %($
this.totalCount = 0; EYLqg`2A
} 6)@Y 41H]C
} Em(&cra
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publicint[] getIndexes(){ -0tHc=\u(
return indexes; b }^ylm
} *8a8Ng
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publicvoid setIndexes(int[] indexes){ B\tP{}P8{
this.indexes = indexes; DGQGV[9%4C
} _Di";fe?
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publicint getStartIndex(){ m$w'`[H
return startIndex; u4W2{
} "1#piJ
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publicvoid setStartIndex(int startIndex){ t9!8Bh<
if(totalCount <= 0) *h H\H
this.startIndex = 0; +VN&kCx)
elseif(startIndex >= totalCount) 4ox[,
this.startIndex = indexes &B;M.sz~C4
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[indexes.length - 1]; L^7"I 4=(D
elseif(startIndex < 0) \["'%8[:gR
this.startIndex = 0; 'f?=ks<
else{ b!pG&7P
this.startIndex = indexes Hxw 7Q?F
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[startIndex / pageSize]; )-RI
} ~zcHpxO^W
} 4"=(kC~~
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publicint getNextIndex(){ #y?iUv
int nextIndex = getStartIndex() + 'JjW5
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pageSize; $v6`5;#u
if(nextIndex >= totalCount) X=W.{?
return getStartIndex(); [5iBXOmpS=
else
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return nextIndex; 2brxV'tk
} |#)S`Ua1
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publicint getPreviousIndex(){ %]iDhXLr
int previousIndex = getStartIndex() - g aq"+@fH
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pageSize; ?FRuuAS
if(previousIndex < 0) ;:Yz7<>Y,
return0; t& *K
else .[qm>j,
return previousIndex; qkg`4'rLg
} 15 /lX
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} {zri6P+s
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抽象业务类 &t1Uk[
java代码: saj%[Gsy
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/** Z<Pf[C
* Created on 2005-7-12 B F,8[|%#
*/ BSMM3jXb
package com.javaeye.common.business; uxjx~+qFd
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import java.io.Serializable; A\1X- Mm
import java.util.List; *?-,=%,z/
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import org.hibernate.Criteria; FVgE^_
import org.hibernate.HibernateException; /3!c
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import org.hibernate.Session; DC-tBbQkk
import org.hibernate.criterion.DetachedCriteria; a9"1a'
import org.hibernate.criterion.Projections; KcK,%!>B
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org.springframework.orm.hibernate3.HibernateCallback; ;4!,19AT
import |k:ecw
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org.springframework.orm.hibernate3.support.HibernateDaoS T"tR*2HwSd
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upport; MKr)6PG,
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import com.javaeye.common.util.PaginationSupport; /4!.G#DLQ
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public abstract class AbstractManager extends [\rnJ
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HibernateDaoSupport { ]8c%)%Vi
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privateboolean cacheQueries = false; 4^jIV!V
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privateString queryCacheRegion; y-/,,,r
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publicvoid setCacheQueries(boolean t
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cacheQueries){ uDWxIP,m
this.cacheQueries = cacheQueries; oQS_rv\Ber
} ?c;T4@mB
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publicvoid setQueryCacheRegion(String .C=I~Z
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queryCacheRegion){ 68
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this.queryCacheRegion = Z.iQm{bI
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queryCacheRegion; dP7nR1GS
} !go$J]T
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publicvoid save(finalObject entity){ {+SshT>J
getHibernateTemplate().save(entity); b;K];o-/f
} qIC9L"I
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publicvoid persist(finalObject entity){ : =J^ "c
getHibernateTemplate().save(entity); D J:N
}
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publicvoid update(finalObject entity){ '20S oVp
getHibernateTemplate().update(entity); F70_N($i
} wyVQV8+&>
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publicvoid delete(finalObject entity){ 'ZUB:R@[
getHibernateTemplate().delete(entity); 6iZ:0y0t+6
} ,e{|[k
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publicObject load(finalClass entity, kYl')L6
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finalSerializable id){ \GFFPCi4D
return getHibernateTemplate().load A{QXzoWkg0
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(entity, id); "+@>!U
} iYE7BUH=
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publicObject get(finalClass entity, D rMG{Yiu
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finalSerializable id){ R'Y=-
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return getHibernateTemplate().get 2GB+st,
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(entity, id); 5Y W.s
}
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publicList findAll(finalClass entity){ [Dv6z t>
return getHibernateTemplate().find("from %{sL/H_
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" + entity.getName()); DJu&l
} OSDx
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publicList findByNamedQuery(finalString KXS{@/"-B
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namedQuery){ [&B}{6wry
return getHibernateTemplate @=0O'XM
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().findByNamedQuery(namedQuery); 3!OO_
} MUeS8:q-N
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publicList findByNamedQuery(finalString query, =D"H0w <zw
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finalObject parameter){ aglW\LT^
return getHibernateTemplate sA}X ha
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().findByNamedQuery(query, parameter); [|NgrU_.
} +=qazE<:0
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publicList findByNamedQuery(finalString query, Y unY'xY
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finalObject[] parameters){ rP=!!fC1;
return getHibernateTemplate #SR"Q`P
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().findByNamedQuery(query, parameters); $:aKb#l)
} dl%KD8
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publicList find(finalString query){ R06zca
return getHibernateTemplate().find L+b"d3!G&%
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(query); y9>?
} R\+O.vX
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publicList find(finalString query, finalObject c[DC
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parameter){ G|"`kAa
return getHibernateTemplate().find [p%OIqC`pB
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(query, parameter); >h+G$&8[y
} @6~OQN
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public PaginationSupport findPageByCriteria qZ8V/
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(final DetachedCriteria detachedCriteria){ o (OC3
return findPageByCriteria -54
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); S&rfMRP
} 0aF&5Lk`y
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public PaginationSupport findPageByCriteria L,QAE)S'a
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(final DetachedCriteria detachedCriteria, finalint lYz$~/sd
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startIndex){ BU|bo")
return findPageByCriteria `T;M=S^y*E
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(detachedCriteria, PaginationSupport.PAGESIZE, <XfCQq/
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startIndex); wJ|wAS
} B_B~Y8=3`
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public PaginationSupport findPageByCriteria /wjL<
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(final DetachedCriteria detachedCriteria, finalint tVf 1]3(_>
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pageSize, x4HVB
finalint startIndex){ ) $wX~k
return(PaginationSupport) -ty_<m]
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getHibernateTemplate().execute(new HibernateCallback(){ 54A ndyeA
publicObject doInHibernate <( 0TK5
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(Session session)throws HibernateException { Q\>Kd
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Criteria criteria = p:,(r{*?
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detachedCriteria.getExecutableCriteria(session);
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int totalCount = bB^SD] }C
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((Integer) criteria.setProjection(Projections.rowCount JQ*CF(9
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()).uniqueResult()).intValue(); quB.A7~^=
criteria.setProjection CVi3nS5Yl
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(null); pGy]t
List items = }v [$uT-q
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criteria.setFirstResult(startIndex).setMaxResults Tv;|K's'
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(pageSize).list(); O?ZCX_R:L
PaginationSupport ps = k^pf)*p
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new PaginationSupport(items, totalCount, pageSize, 7[l
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startIndex); ~6nq$( #
return ps; T/V 5pYl
} >Ic)RPO9
}, true); az (u=}
} hr8v O"tZN
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public List findAllByCriteria(final +yq Z\$ii
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DetachedCriteria detachedCriteria){ Um
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return(List) getHibernateTemplate 3
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().execute(new HibernateCallback(){ x.7Ln9
publicObject doInHibernate Y%UfwbX!g
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(Session session)throws HibernateException { 8"a[W3b
Criteria criteria =
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detachedCriteria.getExecutableCriteria(session); 5o~;0K]
return criteria.list(); Ksq{=q-T
} tZtyx;EP
}, true); (8<U+)[tPy
} O)'Bx=S4Ke
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public int getCountByCriteria(final mCFScT
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DetachedCriteria detachedCriteria){ npH2&6Yhi^
Integer count = (Integer) k,xY\r$
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getHibernateTemplate().execute(new HibernateCallback(){ :N~1fvx
publicObject doInHibernate R4<