Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 !`ol&QQ#
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 tz1@s nes
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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 }v(wjD
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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 <Ij!x`MS+
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分页支持类: 3WV(Ok
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java代码: (1/Sf&2i
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package com.javaeye.common.util; %zavSm"
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import java.util.List; 4^_6~ YP7
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publicclass PaginationSupport { Y#U.9>h
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publicfinalstaticint PAGESIZE = 30; 68%aDs
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privateint pageSize = PAGESIZE; J%|?[{rO{'
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privateList items; OqGp|`
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privateint totalCount; !E7gIqo
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privateint[] indexes = newint[0]; glAS$<
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privateint startIndex = 0; ^`H'LD
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public PaginationSupport(List items, int .EYL
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totalCount){ VPN
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setPageSize(PAGESIZE);
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setTotalCount(totalCount); " <bjS
setItems(items); g&RpE41x
setStartIndex(0); WC_.j^sW
} N$=YL
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public PaginationSupport(List items, int L3]J8oEmU
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totalCount, int startIndex){ y"?`MzcJ0
setPageSize(PAGESIZE); 88Pt"[{1
setTotalCount(totalCount); jAQ{H
setItems(items); as07~Xvp-
setStartIndex(startIndex); e\)%<G5
} ^!['\
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public PaginationSupport(List items, int R P{pEd
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totalCount, int pageSize, int startIndex){ LP3#f{U
setPageSize(pageSize); A-x^JC=
setTotalCount(totalCount);
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setItems(items); _ep&`K
setStartIndex(startIndex); DVQr7tQf
} =i~
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publicList getItems(){ /cS8@)e4
return items; piIZ*@'
} b~;:[ #
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publicvoid setItems(List items){ COi15( G2
this.items = items; RqROl!6
} lh-.I]>&`
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publicint getPageSize(){ c((3 B
return pageSize; >A )Sl'
} c[J 2;"SP
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publicvoid setPageSize(int pageSize){ :b9#e g
this.pageSize = pageSize; %<~Ewno T
} 2tU3p<[
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publicint getTotalCount(){ QXI~Toddj
return totalCount; |A4B4/!
} 7$7|~k
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publicvoid setTotalCount(int totalCount){ U["<f`z4\
if(totalCount > 0){ 3 EAr=E]
this.totalCount = totalCount; JP!e'oWxi
int count = totalCount / ln<[CgV8
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pageSize; &[`24Db
if(totalCount % pageSize > 0) f*@
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count++; qX&+
indexes = newint[count]; zGe =l;
for(int i = 0; i < count; i++){ oVqx)@$K
indexes = pageSize * ?Gf'G{^}
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} \*PE#RB#6
}else{ ks$5$,^T2o
this.totalCount = 0; Cpzd k~+H
} tzl,r"k3
} i K@RQi
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publicint[] getIndexes(){ 4FnePi~i
return indexes; DKo6lP`
} qV=O;
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publicvoid setIndexes(int[] indexes){ y**L^uvr
this.indexes = indexes; Q3r]T.].h
} };2Lrz9<
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publicint getStartIndex(){ 4PC'7V=S
return startIndex; \>T1&JT
} ]Y
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publicvoid setStartIndex(int startIndex){ 8<Nz34Y
if(totalCount <= 0) 0?R$>=u
this.startIndex = 0; /3+E-|4s
elseif(startIndex >= totalCount) *{JD=ua
this.startIndex = indexes =5:vKL j
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[indexes.length - 1]; I9TNUZq('
elseif(startIndex < 0) qPN
this.startIndex = 0; ( 3,7
else{ 2AqcabI9
this.startIndex = indexes Jbima>
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[startIndex / pageSize]; +vFqHfmP
}
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} E=v4|/['N
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publicint getNextIndex(){ 4&]NC2I
int nextIndex = getStartIndex() + GNG.N)q#C
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pageSize; Z(E.F,k
if(nextIndex >= totalCount) j%vxCs>
return getStartIndex(); HVC|0}
else :U1V 2f'l3
return nextIndex; I%?M9y.u6
} oW7;t
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publicint getPreviousIndex(){ PHsM)V+
int previousIndex = getStartIndex() - NFU=PS$
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pageSize; #.j:P#
if(previousIndex < 0) 9 Up>e
return0; Rlr[uU_
else Y5>'(A>
return previousIndex; LQ$dT#z2A
} aBF<it>
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} 3e[k 9`
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抽象业务类
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java代码: H]lD*3b
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/** F,5}3$
* Created on 2005-7-12 yErvgf
*/ 'bef3P9`
package com.javaeye.common.business; .|ZnU]~T
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import java.io.Serializable;
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import java.util.List; 4_eFc$^
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import org.hibernate.Criteria; x(zW<J5X"
import org.hibernate.HibernateException; 3'Z+PPd!
import org.hibernate.Session; U&tR1v'
import org.hibernate.criterion.DetachedCriteria; /Hc0~D4|x
import org.hibernate.criterion.Projections; T /7[hj
import %ye4FwkRy
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org.springframework.orm.hibernate3.HibernateCallback; k.0pPl
import %8L5uMx
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org.springframework.orm.hibernate3.support.HibernateDaoS y/?;s]>b
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upport;
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import com.javaeye.common.util.PaginationSupport; iQaF R@
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public abstract class AbstractManager extends "_&HM4%!
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HibernateDaoSupport { }Sb&ux
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privateboolean cacheQueries = false; jd DcmR
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privateString queryCacheRegion; LYiz:cQh
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publicvoid setCacheQueries(boolean z3}4+~~
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cacheQueries){
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this.cacheQueries = cacheQueries; 4fzM%ku
} z[, `
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publicvoid setQueryCacheRegion(String u"n~9!G
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queryCacheRegion){ ? Kn~fs8
this.queryCacheRegion = My'6yQL
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queryCacheRegion; l:kF0tj"
} 0ID
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publicvoid save(finalObject entity){
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getHibernateTemplate().save(entity); Ts:pk
} WS0RvBvb
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publicvoid persist(finalObject entity){ BPKeG0F7
getHibernateTemplate().save(entity); U`"nX)$
} 86@@j*c(@k
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publicvoid update(finalObject entity){ LNU9M>
getHibernateTemplate().update(entity); V#6`PD6
} = %7:[#n
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publicvoid delete(finalObject entity){ F;&'C$%
getHibernateTemplate().delete(entity); WYE[H9x1?
} Im_`q\i
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publicObject load(finalClass entity, N|1k6g=0
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finalSerializable id){ *K\/5Fzl
return getHibernateTemplate().load UkL'h&J~
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(entity, id); Z,,Wo
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} x2TCw
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publicObject get(finalClass entity, ;z7iUke0%
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finalSerializable id){ D`.CXFI+U
return getHibernateTemplate().get Efw/bTEg
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(entity, id); ZD0Q<8%
} fD|ox
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publicList findAll(finalClass entity){ 413r3/
return getHibernateTemplate().find("from >[Q(!Ai
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" + entity.getName()); ^fb4g+Au
} Fk
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publicList findByNamedQuery(finalString ?Zoq|Q+
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namedQuery){ H1=R(+-s
return getHibernateTemplate uBs[[9je(
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().findByNamedQuery(namedQuery); te'<xfG
} QkzPzbF"
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publicList findByNamedQuery(finalString query, gy<pN?Mw
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finalObject parameter){ KFC zf_P!
return getHibernateTemplate yZ+o7?(2p
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().findByNamedQuery(query, parameter); }`
} AC(}cMM+
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publicList findByNamedQuery(finalString query, \"PlM!0du
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finalObject[] parameters){ 2&!G@5
return getHibernateTemplate !cE)LG
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().findByNamedQuery(query, parameters); E(
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} )WEyB~'o
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publicList find(finalString query){ 3QS"n.d
return getHibernateTemplate().find ;Fuxj!gF
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(query); ZwF_hm=/[
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publicList find(finalString query, finalObject x%x:gkq
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parameter){ E9226
return getHibernateTemplate().find .Fh5:WN
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(query, parameter); sOLo[5y'
} F/RV{} 17E
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public PaginationSupport findPageByCriteria o&LNtl;
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(final DetachedCriteria detachedCriteria){ 9[6*FAFJPP
return findPageByCriteria rxCuV
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); lcIX
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