Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 Or0O/\D)
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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)7{Y9_No
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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 V/%~F6e
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分页支持类: |E)aT#$f'
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java代码: ",Cr,;]
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package com.javaeye.common.util; ,"2TArC'z
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import java.util.List; q3P+9/6
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publicclass PaginationSupport { 'T8W!&$
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publicfinalstaticint PAGESIZE = 30; =^;P#kX
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privateint pageSize = PAGESIZE; .uz|/Zy
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privateList items; BS1Ap
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privateint totalCount; ('[TLHP
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privateint[] indexes = newint[0]; </`yd2 >
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privateint startIndex = 0; 2kh"8oQ
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public PaginationSupport(List items, int b #fTAC;<
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totalCount){ (eWPis[
setPageSize(PAGESIZE); 23]Y<->Eu<
setTotalCount(totalCount); OFU/gaO~
setItems(items); {KL5GowH
setStartIndex(0); , X{>
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public PaginationSupport(List items, int 6<76H
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totalCount, int startIndex){ @.C{OSHE
setPageSize(PAGESIZE); BMyzjteS+
setTotalCount(totalCount); S.*~C0"
setItems(items); X6e/g{S)
setStartIndex(startIndex); }hpmO-
} yV_wDeAz
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public PaginationSupport(List items, int LW)H"6v
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totalCount, int pageSize, int startIndex){ IH*s8tPc
setPageSize(pageSize); @R|'X
setTotalCount(totalCount); |I;$M;'r&
setItems(items); muON>^MbC
setStartIndex(startIndex); <@v]H@E
} f .
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publicList getItems(){ Ah69
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return items; xg@NQI@7
} ),}AI/j;zY
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publicvoid setItems(List items){ "2ru 7Y"
this.items = items; _HOIT
} r=.A'"Kf
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publicint getPageSize(){ b\7iY&.C|
return pageSize; $FTO
} m"eteA,"k_
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publicvoid setPageSize(int pageSize){ ,5
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this.pageSize = pageSize; Q,T"Zd Q
} O`1!
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publicint getTotalCount(){ o`S?
return totalCount; OWq'[T4
} \c,pEXG
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publicvoid setTotalCount(int totalCount){ "UFs~S|e
if(totalCount > 0){ 0pb'\lA
this.totalCount = totalCount; m7c*)"^
int count = totalCount / QF2q^[>w6
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pageSize; B5%n(,Lx
if(totalCount % pageSize > 0) 72uz<i!&$
count++; {V19Zv"j
indexes = newint[count]; K6JVg$
for(int i = 0; i < count; i++){ :nN1e
indexes = pageSize * W*DVi_\$y
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} $lA
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}else{ rf:XRJ<4
this.totalCount = 0; @oP_;G
} 'wasZ b<^
} DB526O*
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publicint[] getIndexes(){ \2-@' ^i
return indexes; g6t"mkMY
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} (:V>Hjt
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publicvoid setIndexes(int[] indexes){ 8F(h*e_?
this.indexes = indexes; DhLqhME53
} O=cxNy-I
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publicint getStartIndex(){ bu7'oB~:V^
return startIndex; Am0{8
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}
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publicvoid setStartIndex(int startIndex){ )4U>!KrY
if(totalCount <= 0) w.\w1:d
this.startIndex = 0; [S]S^ej*8
elseif(startIndex >= totalCount) tY${M^^<J
this.startIndex = indexes `vG,}Pt]
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[indexes.length - 1]; h}_~y'^!
elseif(startIndex < 0) ?<&O0'Q
this.startIndex = 0; kqYa*| l
else{ fA%z*\
this.startIndex = indexes 3ya1'qUC
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[startIndex / pageSize]; /M~!sPW&?
} s`j~-P
} ,21 np
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publicint getNextIndex(){
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int nextIndex = getStartIndex() + enNiI$H]`_
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pageSize; iB0WEj[?
if(nextIndex >= totalCount) ,r^M?>
return getStartIndex(); r"2V
else 7'-Lp@an
return nextIndex; 9j]sD/L5q
} unJid8Lo
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publicint getPreviousIndex(){ YIt& >
int previousIndex = getStartIndex() - Md6]R-l@
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pageSize; |{*}|
if(previousIndex < 0) ,mS/h~-5n
return0; l.\re"Q
else q+KzIde|%
return previousIndex; "LYh7:0s!k
} R3)57OyV
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} \l"&A
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抽象业务类 8(.mt/MR
java代码: R+q"_90_
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/** &mj6rIz
* Created on 2005-7-12 hUQ,z7-
*/ CycUeT
package com.javaeye.common.business; fPi3sb`}
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import java.io.Serializable; f\+fo
import java.util.List; Iz6y{E
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import org.hibernate.Criteria; )15Z#`x
import org.hibernate.HibernateException; o-xDh7v
import org.hibernate.Session; di)*-+
import org.hibernate.criterion.DetachedCriteria; 9!9Z~/*m
import org.hibernate.criterion.Projections; W3vi@kb]
import !3iGz_y
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org.springframework.orm.hibernate3.HibernateCallback; {mWui9 %M
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org.springframework.orm.hibernate3.support.HibernateDaoS <R%;~) {
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upport; -U<Upn)2
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import com.javaeye.common.util.PaginationSupport; |9"p|6G?B
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public abstract class AbstractManager extends a9n^WOJ6
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HibernateDaoSupport { (>mI'!4d
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privateboolean cacheQueries = false;
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privateString queryCacheRegion; 0JgL2ayIVI
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publicvoid setCacheQueries(boolean ]0;864X0
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cacheQueries){ hS[yNwD
this.cacheQueries = cacheQueries; t1VH doNN
} 2^t#6XBk/
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publicvoid setQueryCacheRegion(String vA$o~?a]/
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queryCacheRegion){ rC:?l(8ng3
this.queryCacheRegion = L,d
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queryCacheRegion; w ;daC(:
} hYQ_45Z*?
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publicvoid save(finalObject entity){ TF2>4 p
getHibernateTemplate().save(entity); kc7lc|'z
} mzQ`N}]T:
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publicvoid persist(finalObject entity){ 8 #ndFpu
getHibernateTemplate().save(entity); LPG`^SA
} s5RjIa0$7
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publicvoid update(finalObject entity){ :Rs^0F8)c
getHibernateTemplate().update(entity); "MIq.@8ra
} c}3W:}lW
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publicvoid delete(finalObject entity){ )CX4kPj
getHibernateTemplate().delete(entity); 0y<wvLv2C
} 7W6cM%_B
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publicObject load(finalClass entity, Z~A@o""F
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finalSerializable id){ `@i5i((
return getHibernateTemplate().load Z%GTnG|rG
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(entity, id); 3nY1[,
} }HE6aF62O
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publicObject get(finalClass entity,
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finalSerializable id){ iHf-{[[Z
return getHibernateTemplate().get {pb>$G:gfx
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(entity, id); R3k1RE2c&g
} Ro2d,'
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publicList findAll(finalClass entity){ 7iJ&6=/
return getHibernateTemplate().find("from j@Yi`a(sdm
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" + entity.getName()); FWH}j0Gj|
} j3q~E[Mz\
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publicList findByNamedQuery(finalString rF\"w0J_
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namedQuery){ zI~owK)%Z
return getHibernateTemplate 47r_y\U h
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().findByNamedQuery(namedQuery); 56l@a{
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publicList findByNamedQuery(finalString query, ^-FRTC
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finalObject parameter){ &C>/L;
return getHibernateTemplate 6<0n *&
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().findByNamedQuery(query, parameter); Y!6/[<r$~k
} s4_/&h
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publicList findByNamedQuery(finalString query, 3]-_q"Co4f
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finalObject[] parameters){ rbT)=-(
return getHibernateTemplate p;?*}xa
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().findByNamedQuery(query, parameters); ;,&8QcSVY
} &[2U$ `P`V
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publicList find(finalString query){ \D>$aLO*?
return getHibernateTemplate().find iqnJ~g
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} &D%(~|'
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publicList find(finalString query, finalObject zi~5l#I
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parameter){ }HEvr)v9
return getHibernateTemplate().find >zkRcm
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(query, parameter); Ifk#/d
} s] /tYJYl
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public PaginationSupport findPageByCriteria .oEmU+
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(final DetachedCriteria detachedCriteria){ k`".
return findPageByCriteria :V)lbn\
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); C0=9K@FCb
} Iqs+r?
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public PaginationSupport findPageByCriteria e&eW|E
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(final DetachedCriteria detachedCriteria, finalint yGg,$WM
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startIndex){ @`FCiH M
return findPageByCriteria fAZiC+
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(detachedCriteria, PaginationSupport.PAGESIZE, Khh0*S8.K
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startIndex); Z%Z9oJ:
} Gamr6I"K
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public PaginationSupport findPageByCriteria I *c;H I
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(final DetachedCriteria detachedCriteria, finalint n6F/Ac:
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pageSize, b'zR 9V
finalint startIndex){ BF{w)=@/'
return(PaginationSupport) 5q@LxDy,b
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getHibernateTemplate().execute(new HibernateCallback(){ %hlspI(J
publicObject doInHibernate P#v*TD'
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(Session session)throws HibernateException { {;2i.m1
Criteria criteria = $-+/$!
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detachedCriteria.getExecutableCriteria(session); MH|]\
int totalCount = #6Xs.*b5C
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((Integer) criteria.setProjection(Projections.rowCount Qy#)Gxp
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()).uniqueResult()).intValue(); 3M5#4n\v$
criteria.setProjection GFSt<k)
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(null); `SO|zz|'
List items = 8#R?]Uwq
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criteria.setFirstResult(startIndex).setMaxResults \Mv":Lm1
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(pageSize).list(); =Cqv=
PaginationSupport ps = DN4#H`
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new PaginationSupport(items, totalCount, pageSize, 4^6.~6a
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startIndex); Q bhW!9(,
return ps; DaNW~rd{
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}, true); ]IJRnVp%
} ^"8G`B$r
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public List findAllByCriteria(final {#IPf0O
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DetachedCriteria detachedCriteria){ mq /zTm
return(List) getHibernateTemplate "S~_[/q
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().execute(new HibernateCallback(){ A`O <6
publicObject doInHibernate +.[\g|G
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(Session session)throws HibernateException { xChI,~i
Criteria criteria = lA>\Ko
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detachedCriteria.getExecutableCriteria(session); ')+0nPV
return criteria.list(); O?bK%P]ay
} m9M
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}, true); jc_\'Gr+[
} SEKN|YQV/t
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public int getCountByCriteria(final hwnx<f '
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DetachedCriteria detachedCriteria){ IL7`0cN(
Integer count = (Integer) E_$z`or
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