Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 kBDe*K.V
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 o/i5e=9[y
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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 N2S!.H!Wz
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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 a*$1la'Uf
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分页支持类: #h5Hi9LKf
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java代码: $48[!QE
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package com.javaeye.common.util; !513rNO
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import java.util.List; Z?G3d(YT
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publicclass PaginationSupport { ;jY'z5PH5
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publicfinalstaticint PAGESIZE = 30; \`<s@U
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privateint pageSize = PAGESIZE; 8xGkh?%
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privateList items; }@Ll!,
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privateint totalCount; hTNYjXj
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privateint[] indexes = newint[0]; ,R9f;BR
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privateint startIndex = 0; D4x'
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public PaginationSupport(List items, int Zqe[2()
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totalCount){ *b 7
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setPageSize(PAGESIZE); oVj A$|
setTotalCount(totalCount); tIp\MXkTQ&
setItems(items); Lu$:,^ C
setStartIndex(0); uJAB)ti2I
} v:;C|uE|
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public PaginationSupport(List items, int 5x L,~"
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totalCount, int startIndex){ {<V|Gr
setPageSize(PAGESIZE); y O9pEO|W
setTotalCount(totalCount); m`4j|5
setItems(items); ,r)d#8
setStartIndex(startIndex); I^C
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} 7E84@V[\
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public PaginationSupport(List items, int =_~'G^`tu
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totalCount, int pageSize, int startIndex){ OG<]`!"
setPageSize(pageSize); ysP/@;jC
setTotalCount(totalCount); }X.8.S'
setItems(items); 3kzG L
setStartIndex(startIndex); l#(g&x6J
} $AJy^`E^
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publicList getItems(){ looPO:bo^
return items; UVuuIW0k
} 0O9
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publicvoid setItems(List items){ ,;-cz-,
this.items = items; Z~R/p;@
} ki/Lf4
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publicint getPageSize(){ sC*E;7gT,
return pageSize; dIh(~KqB
} *{n,4d\..
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publicvoid setPageSize(int pageSize){ :~YyHX
this.pageSize = pageSize; ZI:d&~1i1
} %L,,
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publicint getTotalCount(){ c\?/^xr'!}
return totalCount; Mh@ylp+q
} _:z;j{@4
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publicvoid setTotalCount(int totalCount){ hFF&(t2{^
if(totalCount > 0){ 0~I)
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this.totalCount = totalCount; }t{^*(
int count = totalCount / !7Q.w/|=
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pageSize; UgBY
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if(totalCount % pageSize > 0) ,}xC) >
count++; 5Szo5
indexes = newint[count]; HrcnyQ`Q0
for(int i = 0; i < count; i++){ l~>rpG
indexes = pageSize * gA8u E
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} Y- 9j2.{
}else{ pF{Ri
this.totalCount = 0; Z|7I }i
} zCN;LpbEJY
} !{- 3:N7
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publicint[] getIndexes(){ ~1z8G>R
return indexes; NxRiEe#m
} 1JY90l$ME
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publicvoid setIndexes(int[] indexes){ J-,X0v"
this.indexes = indexes; J!qEj{
} @o.i2iG
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publicint getStartIndex(){ }LVE^6zyk
return startIndex; WxI]Fcb<
} IQ`aDo-V
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publicvoid setStartIndex(int startIndex){ LA(JA
if(totalCount <= 0) G5@@m-
this.startIndex = 0; J~ rC
elseif(startIndex >= totalCount) W`rE\P
this.startIndex = indexes -CNv=vj 3
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[indexes.length - 1]; 7
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elseif(startIndex < 0) CHSD8D
this.startIndex = 0; 'Z%aBCM
else{ -x5bdC(d
this.startIndex = indexes ;:YjgZ:+Q]
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[startIndex / pageSize]; %Y[/Ucdm
} )bJ6{&
} 0md{e`'q:
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publicint getNextIndex(){ .jU0Hu{F4
int nextIndex = getStartIndex() + !,WRXE&j
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pageSize; t$Ji{t-
if(nextIndex >= totalCount) Z%d4V<fn
return getStartIndex(); ]nGA1 S{
else "s^@PzQpN
return nextIndex; ;^SgV
} 3W00,f^9
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publicint getPreviousIndex(){ B_1u<00kg
int previousIndex = getStartIndex() - 0pG(+fN_9
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pageSize; .=<pU k 3G
if(previousIndex < 0) ) FsSXnZL
return0; ~H."{
else 5q*~h4=r7
return previousIndex; N>iCb:_
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} D($UbT-v
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} PhdL@Mr
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抽象业务类 5.;$9~d
java代码: ]zAg6*-/B
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/** *38\&"s4_
* Created on 2005-7-12 /v<8x?=
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package com.javaeye.common.business; ;hp; Rd
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import java.io.Serializable; e6a8ad
import java.util.List; N_}Im>;!
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import org.hibernate.Criteria; *]u/,wCB
import org.hibernate.HibernateException; KL{uhb0f
import org.hibernate.Session; [#H8Mb+7
import org.hibernate.criterion.DetachedCriteria; *Ux"3IXO
import org.hibernate.criterion.Projections; o?\Pw9Y
import
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org.springframework.orm.hibernate3.HibernateCallback; < ,n4|z)
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org.springframework.orm.hibernate3.support.HibernateDaoS cFo-NI2
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upport; HRh".!lxy
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import com.javaeye.common.util.PaginationSupport; S d -+a
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public abstract class AbstractManager extends jeNEC&J
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HibernateDaoSupport { %UhF=C
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privateboolean cacheQueries = false; ~{{:-XkVB
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privateString queryCacheRegion; (6b%;2k
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publicvoid setCacheQueries(boolean pDT6>2t
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cacheQueries){ BGS6uV4^>
this.cacheQueries = cacheQueries; $fO*229As
} =lnz5H
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publicvoid setQueryCacheRegion(String Zx{'S3W
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queryCacheRegion){ wH.'EC
this.queryCacheRegion = <R$|J|
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queryCacheRegion; |iI`p-L9
} U ;/ )V
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publicvoid save(finalObject entity){ ' wEP:}
getHibernateTemplate().save(entity); ~Q0}>m,S
} kW9STN
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publicvoid persist(finalObject entity){ X"]ZV]7(]s
getHibernateTemplate().save(entity); Q\Eq(2p
} SzDi=lY
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publicvoid update(finalObject entity){ s]qfLC
getHibernateTemplate().update(entity); h7{W-AtM7_
} TBzM~y
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publicvoid delete(finalObject entity){ h
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getHibernateTemplate().delete(entity); W*0KAC`m
} bF.Aj8ZQ
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publicObject load(finalClass entity, 8`D_"3j3g\
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finalSerializable id){ 86i =N_
return getHibernateTemplate().load @RC_Ie=#)
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(entity, id); $I'ES#8P6
} u=4Rn
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publicObject get(finalClass entity, /#a$4 }2L
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finalSerializable id){ JkKI/5h
return getHibernateTemplate().get nm)F tX|A
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(entity, id); Bn.8wMB
} /1Eg6hf9B
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publicList findAll(finalClass entity){ @!S5FOXipZ
return getHibernateTemplate().find("from |qBo*OcO
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" + entity.getName()); Vrnx#j-U
} (efH>oY[
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publicList findByNamedQuery(finalString |Bjb
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namedQuery){ 0@
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return getHibernateTemplate `
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().findByNamedQuery(namedQuery); _jtBU
} milU,!7J
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publicList findByNamedQuery(finalString query, "Kqe4$
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finalObject parameter){ %bAv.'C
return getHibernateTemplate G B15
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().findByNamedQuery(query, parameter); n7S[ F3
} 3V-pLs|
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publicList findByNamedQuery(finalString query, 0j*8|{|
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finalObject[] parameters){ 6s6[sUf=l&
return getHibernateTemplate qLR)>$
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().findByNamedQuery(query, parameters); zEu*q7
} LB>!%Vx
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publicList find(finalString query){ ]1klfp,`
return getHibernateTemplate().find !nTq"d%(W
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(query); 6`4=!ZfI
} j}y"
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publicList find(finalString query, finalObject )#1@@\< ^T
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parameter){ pBHr{/\5
return getHibernateTemplate().find ]g:VvTJ;?
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(query, parameter); . uhP(
} n#4Ra+dD
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public PaginationSupport findPageByCriteria _KKG^
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(final DetachedCriteria detachedCriteria){ ,9=a(j"
return findPageByCriteria !fZxK CsQ
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); ~}uTC36C\
} }v`5
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public PaginationSupport findPageByCriteria n]|[|Rf1
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(final DetachedCriteria detachedCriteria, finalint 4PNl3N3,n
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startIndex){ @;pTQ
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return findPageByCriteria S/8xo@vct]
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(detachedCriteria, PaginationSupport.PAGESIZE, zg[ksny
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startIndex); [gU z9iU
} EyozhIV
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public PaginationSupport findPageByCriteria Tf` ~=fg%
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(final DetachedCriteria detachedCriteria, finalint ?!b}Ir<1j
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pageSize, $6R<)]6
finalint startIndex){ |NL$? %I
return(PaginationSupport) XBCz\f
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getHibernateTemplate().execute(new HibernateCallback(){ {,,w5/k^
publicObject doInHibernate 6:@tHUm
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(Session session)throws HibernateException { [@Y?'={qE
Criteria criteria = !RAyUfS
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detachedCriteria.getExecutableCriteria(session); _.zW[;84b
int totalCount = AfyEFnY
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((Integer) criteria.setProjection(Projections.rowCount cSQvP.
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()).uniqueResult()).intValue(); >{V]q*[/;Q
criteria.setProjection m;k' j@:
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(null); [/6IEt3}B
List items = hK?uGt
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criteria.setFirstResult(startIndex).setMaxResults y~jTI[kS
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(pageSize).list(); T-uI CMEf
PaginationSupport ps = }3ty2D#/:
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new PaginationSupport(items, totalCount, pageSize, uee2WGD
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startIndex); &K/5AH"q
return ps; kF`2%g+
} gCW.;|2
}, true); ',v
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} V\Cu|m&HI
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public List findAllByCriteria(final )lE]DG!
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DetachedCriteria detachedCriteria){ AKejWh
return(List) getHibernateTemplate {O[a+r.n
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().execute(new HibernateCallback(){ 7&qunK'
publicObject doInHibernate KYZ/b8C
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(Session session)throws HibernateException { m6bAvy]3<t
Criteria criteria = twq!@C
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detachedCriteria.getExecutableCriteria(session); %[l5){:05
return criteria.list(); b[%sKl
} =LC:1zn4
}, true); q",n:=PL
} lo5,E(7~h
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public int getCountByCriteria(final 'D;v>r
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DetachedCriteria detachedCriteria){ #"|</*%>
Integer count = (Integer) <}&n}|!
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getHibernateTemplate().execute(new HibernateCallback(){ AQw1,tGV
publicObject doInHibernate (Z fY/
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(Session session)throws HibernateException { z1{kZk
Criteria criteria = xrs?"]M[
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detachedCriteria.getExecutableCriteria(session); IQAV`~_G
return ;`p+Vs8C
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