Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 Li-(p"
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 6^IqSNn-
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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 H~dHVQtJZ
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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 ^?7dOW
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分页支持类: lHKf#|
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java代码: yB4H3Q )
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package com.javaeye.common.util;
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import java.util.List; JYg% ~tW'
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publicclass PaginationSupport { Vp]D
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publicfinalstaticint PAGESIZE = 30; "<w2v'6S
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privateint pageSize = PAGESIZE; V'"I9R'1
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privateList items; .;HIEj zq
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privateint totalCount; 9:%n=U Rd
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privateint[] indexes = newint[0]; ] dHB}
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privateint startIndex = 0; %-#
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public PaginationSupport(List items, int oe!:|ck<
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totalCount){ |As2"1_f
setPageSize(PAGESIZE); WGh. ;-
setTotalCount(totalCount); \T`["<
setItems(items); Re*|$r#
setStartIndex(0); `l>93A
} 8M^wuRn
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public PaginationSupport(List items, int $s-9|Lbs`
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totalCount, int startIndex){ Gz>Lqd
setPageSize(PAGESIZE); |1(rr%
setTotalCount(totalCount); EJZ@p7*Oj
setItems(items); M%$DT
setStartIndex(startIndex); ?wd|G4.Vo
} I?a8h`WS+
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public PaginationSupport(List items, int v@8S5KJ
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totalCount, int pageSize, int startIndex){ `,wcQ
setPageSize(pageSize); >dpbCPJ9[
setTotalCount(totalCount); A7k'K4
setItems(items); OlMBMUR:
setStartIndex(startIndex); 5x8'K7/4.
} 3{N\A5~
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publicList getItems(){ [}>#YPZ
return items; T H|?X0b
} ?75\>NiR
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publicvoid setItems(List items){ Wk@
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this.items = items; &Hv;<
} u(W^Nou/+
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publicint getPageSize(){ 3bWum
return pageSize; $#5klA
} hM~eJv
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publicvoid setPageSize(int pageSize){ Bwjg#1 E
this.pageSize = pageSize; i 'qMi~{
} D%-{q>F!gf
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publicint getTotalCount(){ (@ "=F6P
return totalCount; TMK'(6dH
} [*<.?9n)or
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publicvoid setTotalCount(int totalCount){ W9dYljnZ8i
if(totalCount > 0){ t\8&*(&3F
this.totalCount = totalCount; Z|
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int count = totalCount / KxY$PgcC
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pageSize; qU#$2
if(totalCount % pageSize > 0) rJDnuR
count++; Qm<
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indexes = newint[count]; ! a o6e
for(int i = 0; i < count; i++){ Pey//U
indexes = pageSize * \<ZLoy_
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} =`-|&
}else{ RX'-99M
this.totalCount = 0; lV\lj@
} b$Ln}<
} 34ha26\np
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publicint[] getIndexes(){ [![ G7H%f
return indexes; %(`#A.yaE
} ,)zt
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publicvoid setIndexes(int[] indexes){ OEnDsIhq
this.indexes = indexes; "b]#MO}P
} ?g3 ]~;#
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publicint getStartIndex(){ KXf<$\+zO
return startIndex; L,?/'!xV
} i.y=8GxY
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publicvoid setStartIndex(int startIndex){ X\\7$
if(totalCount <= 0) @*(4dt:V
this.startIndex = 0; 8gC)5Y
elseif(startIndex >= totalCount) ', {7%G9
this.startIndex = indexes ? gSSli[
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[indexes.length - 1]; ]\Xc9N8w
elseif(startIndex < 0) :$g8Zm,y
this.startIndex = 0; LnFWA0y
else{ )\ZzTS
this.startIndex = indexes u1Ek y/e-
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[startIndex / pageSize]; /YH`4e5g
} I%"'*7U
} l?8)6z#Zl
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publicint getNextIndex(){ M T6/2d
int nextIndex = getStartIndex() + [ohBPQO
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pageSize; = 96P7#%
if(nextIndex >= totalCount) {2
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return getStartIndex(); WR#0<cz(
else A6{b?aQ
return nextIndex; E4i0i!<z
} 6X)@ajGWg~
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publicint getPreviousIndex(){ &aG*k*
int previousIndex = getStartIndex() - DC Q^fZ/
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pageSize; vq!uD!lr
if(previousIndex < 0) "i&"* ~
return0; EQ<RDhC@b
else R Oc`BH=
return previousIndex; Uxu\u0*
} \or G63T:
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} )ev<7g9*q
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抽象业务类 9GLb"6+PK
java代码: IMGP'g
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/** Te,$M3|
* Created on 2005-7-12 XORk!m|
*/ E=]4ctK
package com.javaeye.common.business; MXD4|r(
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import java.io.Serializable; qe$^q
import java.util.List; %A/_5;PZ/
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import org.hibernate.Criteria; {aYY85j
import org.hibernate.HibernateException; eqAW+Ptx
import org.hibernate.Session; K(}AX+rIg
import org.hibernate.criterion.DetachedCriteria; qJ4T]FVN
import org.hibernate.criterion.Projections; M~Ttb29{
import WjSc/3Qy
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org.springframework.orm.hibernate3.HibernateCallback; R(Kk{c:-@
import )!BsF'uVQ
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org.springframework.orm.hibernate3.support.HibernateDaoS [U, ?R
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upport; _nh[(F<hz
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import com.javaeye.common.util.PaginationSupport; 4QOEw-~w&s
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public abstract class AbstractManager extends jnB~sbyA
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HibernateDaoSupport { .iMN,+qP
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privateboolean cacheQueries = false; 3DgsI7-F
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privateString queryCacheRegion; a,
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publicvoid setCacheQueries(boolean mm[2wfTE
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cacheQueries){ gKLyL]kAGz
this.cacheQueries = cacheQueries; *Xo]-cKL0
} ;W>Cqg=
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publicvoid setQueryCacheRegion(String :cu#V
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queryCacheRegion){ O$/o'"@ /
this.queryCacheRegion = e:H26 SW
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queryCacheRegion; G,Z^g|6
} 98=wnWX6$
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publicvoid save(finalObject entity){ 2(5ebe[
getHibernateTemplate().save(entity); ['8!qr
} )i+2X5B`S
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publicvoid persist(finalObject entity){ u:0aM}9A
getHibernateTemplate().save(entity); ,h"-
} 8-<:i
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publicvoid update(finalObject entity){ s0Z
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getHibernateTemplate().update(entity); c'/l,k
} L
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publicvoid delete(finalObject entity){ V#VN%{
getHibernateTemplate().delete(entity); 45hF`b>%,
} vfVj=DYj
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publicObject load(finalClass entity, H"A7Zo
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finalSerializable id){ boDt`2=
return getHibernateTemplate().load J:V?EE,\-
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(entity, id); d!eYqM7-G
} ,VO2a mI
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publicObject get(finalClass entity, &b:1I7Cp*
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finalSerializable id){ !47n[Zs
return getHibernateTemplate().get |i++0BU
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(entity, id); m *JaXa
} 21"1NJzP
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publicList findAll(finalClass entity){ X&kp;W
return getHibernateTemplate().find("from ` V##Y
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" + entity.getName()); EFz&N\2
} #ep`nf0x
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publicList findByNamedQuery(finalString B
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namedQuery){ E>K!Vrh-L
return getHibernateTemplate <7~'; K
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().findByNamedQuery(namedQuery); q@{Bt{$x
} Rb'|EiNPw
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publicList findByNamedQuery(finalString query, u A<n
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finalObject parameter){ \.-bZ$
return getHibernateTemplate 7j-4TY~
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().findByNamedQuery(query, parameter); ~A\GT$
} NCDvobYJ
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publicList findByNamedQuery(finalString query, .6Pw|xu`Pw
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finalObject[] parameters){ a^I\ /&aw'
return getHibernateTemplate F'21jy&
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().findByNamedQuery(query, parameters); GB=X5<;
} ;>Ib^ov
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publicList find(finalString query){ EFM5,gB.m
return getHibernateTemplate().find 3ca (i/c
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(query); J| w>a
} (,0(
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publicList find(finalString query, finalObject Hquc
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parameter){ W_"sM0
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return getHibernateTemplate().find z7fp#>uw
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(query, parameter); L 0TFo_
} 4O^xY
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public PaginationSupport findPageByCriteria -&zZtDd F
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(final DetachedCriteria detachedCriteria){ c(xrP/yOwi
return findPageByCriteria V17%=bCZ5[
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); n FHUy9q
} .SU8)T
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public PaginationSupport findPageByCriteria aC8} d
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(final DetachedCriteria detachedCriteria, finalint NJWA3zz
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startIndex){
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return findPageByCriteria 6]WAUK%h
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(detachedCriteria, PaginationSupport.PAGESIZE, <KL,G};0pm
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startIndex); IL#"~D?
} #@Jq~$N|
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public PaginationSupport findPageByCriteria (f"4,b^]
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(final DetachedCriteria detachedCriteria, finalint nJ;.Td
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pageSize, MHwIA *R
finalint startIndex){ N$tGQ@
return(PaginationSupport) ~$J2g
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getHibernateTemplate().execute(new HibernateCallback(){ GLODVcjf
publicObject doInHibernate @|)Z"m7
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(Session session)throws HibernateException { 2BobH_H
Criteria criteria = 'W#D(l9nI
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detachedCriteria.getExecutableCriteria(session); Np)lIGE
int totalCount = !VK|u8i
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((Integer) criteria.setProjection(Projections.rowCount yppo6HGD
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()).uniqueResult()).intValue(); 07 $o;W@
criteria.setProjection iyog`s c
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(null); [SW_C
List items = Lh<).<S
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criteria.setFirstResult(startIndex).setMaxResults #o2[hibq
]+$?u&0?w
(pageSize).list(); Y4(
PaginationSupport ps = {zFMmPid
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new PaginationSupport(items, totalCount, pageSize, .>nRzgo
8JD,u
startIndex); RX5dO%
return ps; [c06 N$:
} ri.I pRe
}, true); a@*\o+Su
} e~':(/%|5;
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public List findAllByCriteria(final 09Cez\0
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DetachedCriteria detachedCriteria){ ?K\axf>F
return(List) getHibernateTemplate _ORvo{[:
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().execute(new HibernateCallback(){ # Vha7
publicObject doInHibernate W{gb:^;zb
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(Session session)throws HibernateException { #
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Criteria criteria = E+w<RNBmz
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detachedCriteria.getExecutableCriteria(session); 8pgEix/M5o
return criteria.list(); w*JGUk
} &IB