Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 *c#DB{N
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ZvuY]=^3
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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 _U}|Le@ 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 M0m%S:2
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分页支持类: -}@C9Ja[?
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java代码: +!@xH];
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package com.javaeye.common.util; T \34<+n1N
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import java.util.List; (l][_6Q
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publicclass PaginationSupport { e`+
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publicfinalstaticint PAGESIZE = 30; oi Q3E
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privateint pageSize = PAGESIZE; ';eAaDM
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privateList items; T>|+cg
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privateint totalCount; Wr Wz+5M8
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privateint[] indexes = newint[0]; ]@SEOc@ j
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privateint startIndex = 0; s,-<P1}/
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public PaginationSupport(List items, int lxTqGwx
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totalCount){ \sGJs8#v][
setPageSize(PAGESIZE); f:q2JgX
setTotalCount(totalCount); 937<:zo:
setItems(items); ^N}{M$
setStartIndex(0); lS;S:-
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} \U]<HEc^
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public PaginationSupport(List items, int El`G<esX
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totalCount, int startIndex){ 'o]}vyz;
setPageSize(PAGESIZE); l7ES*==&@0
setTotalCount(totalCount); cmf*BkS
setItems(items); O,@QGUoA
setStartIndex(startIndex); F[ ^ p~u{
} *[nS*D\:
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public PaginationSupport(List items, int 9Lt3^MKa"
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totalCount, int pageSize, int startIndex){ mznE Cy
setPageSize(pageSize); C1HNcfa7
setTotalCount(totalCount); oz'jt} ?
setItems(items);
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setStartIndex(startIndex); wj$3L3
} g[2[
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publicList getItems(){ 7<Ut/1$MI
return items; |b
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} Y0'~u+KS`5
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publicvoid setItems(List items){ UL8"{-`_\
this.items = items; ue
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} pv|D{39Hs
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publicint getPageSize(){ TAM`i3{ D
return pageSize; r-BqIoVT
} aj+I+r"~
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publicvoid setPageSize(int pageSize){ x@@k_'~t%
this.pageSize = pageSize; e]jzFm~
} BGB.SN#q+
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publicint getTotalCount(){ P>6wr\9i[
return totalCount; >m9ge`!9
} 6mrfkYK
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publicvoid setTotalCount(int totalCount){ tIX|oWC$q
if(totalCount > 0){ =WOYZ7
this.totalCount = totalCount; 9hwn,=Vh)
int count = totalCount / 9NC6q-2
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pageSize; G_p13{"IM
if(totalCount % pageSize > 0) \ U`rF
count++; C"}]PW
indexes = newint[count]; VN4H+9E
for(int i = 0; i < count; i++){ &
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indexes = pageSize * 8-vNXvl
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} oX]c$<w5
}else{ X15e~;&
this.totalCount = 0; S1$&
} V,9UOC,Gn
} BI)$aR
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publicint[] getIndexes(){ k3"Y!Uha:
return indexes; _{gRCR)
} [=xO>
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publicvoid setIndexes(int[] indexes){ {,m W7
this.indexes = indexes; l3/?,xn
} 9s6d+HhM
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publicint getStartIndex(){ a_(vpD^
return startIndex; ;l b@o,R :
} cbA90 8@s
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publicvoid setStartIndex(int startIndex){ D(S^g+rd
if(totalCount <= 0) *$7c||J7
this.startIndex = 0; B8G1
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elseif(startIndex >= totalCount) $5l=&
this.startIndex = indexes ;,]Wtmu)7
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[indexes.length - 1]; yX8$LOjE
elseif(startIndex < 0) 5SY( :!
this.startIndex = 0; Qjh @oWT
else{ *FUbKr0
this.startIndex = indexes j1,ir
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[startIndex / pageSize]; g)k::k)<e
} RV:%^=V-
} ]^^mJt.Iv
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publicint getNextIndex(){ /v:+
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int nextIndex = getStartIndex() + X8b= z9
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pageSize; h|1 /Q
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if(nextIndex >= totalCount) JuT~~Z
return getStartIndex(); :AB$d~${M>
else 13P8Zmco
return nextIndex; .qBf`T;
} ',p`B-dw
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publicint getPreviousIndex(){ vJfex,#lv
int previousIndex = getStartIndex() - t1YVE%`w
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pageSize; qMe$Qr8
if(previousIndex < 0) 9rmOf Jo:
return0; It@.U|
else $/Q*@4t
return previousIndex; 7.l[tKh
} g k[8'
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} uN1O(s
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抽象业务类 R"=pAO.4l
java代码: xeX Pc7JG
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/** V1j5jjck
* Created on 2005-7-12 qJN2\e2~f
*/ /r Hd9^Y
package com.javaeye.common.business; Hb;#aXHSd
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import java.io.Serializable; jdGoPa\
import java.util.List; IOsitMOX:
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import org.hibernate.Criteria; [huS"1
import org.hibernate.HibernateException; 'lym^^MjL+
import org.hibernate.Session; yb#NB)+E@
import org.hibernate.criterion.DetachedCriteria; zR+EJFf
import org.hibernate.criterion.Projections; Vx^+Z,y&QP
import E8~Bp-G)
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org.springframework.orm.hibernate3.HibernateCallback; 39QAj&
import COa"zg
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org.springframework.orm.hibernate3.support.HibernateDaoS A-&C.g
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upport; &!#a^d+` 0
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import com.javaeye.common.util.PaginationSupport; :U>o;
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public abstract class AbstractManager extends ]N^a/&}*
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HibernateDaoSupport { @""aNKA^r>
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privateboolean cacheQueries = false; "3A.x1uQ
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privateString queryCacheRegion; D0D0=s
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publicvoid setCacheQueries(boolean V&E)4KBOs
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cacheQueries){ AAE8j.
this.cacheQueries = cacheQueries; Tt.wY=,K
} 'dp3>4
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publicvoid setQueryCacheRegion(String i*' 6"
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queryCacheRegion){ 7c9-MP)
this.queryCacheRegion =
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queryCacheRegion; CfA^Xp@vc
} Y=l91dxGI
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publicvoid save(finalObject entity){ WUSkN;idVG
getHibernateTemplate().save(entity); hTZaI *
} pDO&I]S`q0
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publicvoid persist(finalObject entity){ 'Jww}^h1
getHibernateTemplate().save(entity); e.%`
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} *wcb 5p
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publicvoid update(finalObject entity){ vd>X4e^j
getHibernateTemplate().update(entity); ^<#08L;
} AXhV#nZt0
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publicvoid delete(finalObject entity){ ({g7{tUy^H
getHibernateTemplate().delete(entity); Gk0f#;
} 445}Yw5;9
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publicObject load(finalClass entity, Q<.847 )
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finalSerializable id){ 8r7~ >p~
return getHibernateTemplate().load h\ema|
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(entity, id); |-l)$i@
} %Ji@\|Zkf
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publicObject get(finalClass entity, /l -lkG5
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finalSerializable id){ ?'_E$
return getHibernateTemplate().get =^m,|j|d>4
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(entity, id); B>}=x4-8
} :gMcl"t--
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publicList findAll(finalClass entity){ sf\p>gb
return getHibernateTemplate().find("from y#Je%tAe
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" + entity.getName()); *6oQW
} 3VZeUOxY\W
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publicList findByNamedQuery(finalString G:NI+E"]
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namedQuery){ \M-}(>Pfk
return getHibernateTemplate ,"~#s(
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().findByNamedQuery(namedQuery); 1@*qz\ YY
} @Omgk=6
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publicList findByNamedQuery(finalString query, pJ Iq`)p5
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finalObject parameter){ ^sR]w]cz.
return getHibernateTemplate Nf(Np1?;c
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().findByNamedQuery(query, parameter); d?G~k[C!a
} #?/&H;n_8S
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publicList findByNamedQuery(finalString query, fG2hCP+
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finalObject[] parameters){ #flOaRl.
return getHibernateTemplate bkfwsYZx
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().findByNamedQuery(query, parameters); I^>m-M.
}
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publicList find(finalString query){ Gq_rZo(@
return getHibernateTemplate().find $xRZU9+
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(query); ZPHiR4fQli
} %$K2$dq5
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publicList find(finalString query, finalObject J
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parameter){ Q@B--Omfh
return getHibernateTemplate().find Ig9yd S-.
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(query, parameter); !QK~l
} CG!/Lbd
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public PaginationSupport findPageByCriteria f>$Ld1
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(final DetachedCriteria detachedCriteria){ K:Mm?28s
return findPageByCriteria L'XX++2
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); MRzrZZ%LQ
} /">A3bq
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public PaginationSupport findPageByCriteria |BrD:+
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(final DetachedCriteria detachedCriteria, finalint #$trC)? ~q
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startIndex){ %si5cc?
return findPageByCriteria nNe`?TS?f
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