Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ~AYN
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 gK#mPcn^
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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 t$2_xX
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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 )m6M9eC
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分页支持类: ~pa!w?/bQ
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java代码: Qjx?ri//
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package com.javaeye.common.util; u&G.4QQF
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import java.util.List; $VAx:Y|
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publicclass PaginationSupport { >56>*BHD
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publicfinalstaticint PAGESIZE = 30; &aM7T_h8
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privateint pageSize = PAGESIZE; _'4A|-9
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privateList items; 86@c't@
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privateint totalCount; :^UFiUzrE
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privateint[] indexes = newint[0]; I%|>2}-_U
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privateint startIndex = 0; R1&unm0
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public PaginationSupport(List items, int (SSRY 9
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totalCount){ r"$.4@gc
setPageSize(PAGESIZE); .xf<=ep
setTotalCount(totalCount); [c_|ob]
setItems(items); $/Aj1j`"9+
setStartIndex(0); L@=3dp!\Cu
} sNun+xsf^
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public PaginationSupport(List items, int &d7Z6P'`G
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totalCount, int startIndex){ +cb6??H
setPageSize(PAGESIZE); .q+0pj
setTotalCount(totalCount); zByT$P-
setItems(items); ceNix!P
setStartIndex(startIndex); B^).BQ
} .^J2.>.
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public PaginationSupport(List items, int `1 :{0p2q
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totalCount, int pageSize, int startIndex){ @aJ!PV'ms
setPageSize(pageSize); EpQ8a[<-3
setTotalCount(totalCount); `3p~m,
setItems(items); <dyewy*.L
setStartIndex(startIndex); 12Y
} 1+?^0%AC
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publicList getItems(){ fnx-s{c?
return items; o1nURJ!
} = k\J<
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publicvoid setItems(List items){ )O:0]=#))
this.items = items; ~
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} HR}bbsqxVf
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publicint getPageSize(){ }i!J/tJ)b
return pageSize; Q1@A2+ c
} vq34/c^
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publicvoid setPageSize(int pageSize){ DBP9{ x$
this.pageSize = pageSize; qWw\_S
} b86}% FM
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publicint getTotalCount(){ bV/jfV"%E
return totalCount; O*#*%RL|
} nT2)E&U6%
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publicvoid setTotalCount(int totalCount){ )=Jk@yj8x
if(totalCount > 0){ 6-O_\Cq8
this.totalCount = totalCount; 5h; +Ky!I
int count = totalCount / 7g3>jh
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pageSize; >t7x>_~
if(totalCount % pageSize > 0) 2WG>, 4W2
count++; XVU2T5s}
indexes = newint[count]; =FD;~
for(int i = 0; i < count; i++){ +@r*}
indexes = pageSize * "yW:\
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} zl`h~}I
}else{ W5R\Q,x6
this.totalCount = 0; q:g2Zc'Y~W
} )+fh-Ui
} #Qkroji
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publicint[] getIndexes(){ Sf8{h|71
return indexes; P~ &$l2
} `/_G$_
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publicvoid setIndexes(int[] indexes){ mml
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this.indexes = indexes; H$6`{lx,
} 3)RsLI9
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publicint getStartIndex(){ SCTA=l.
return startIndex; LcE+GC
} M
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publicvoid setStartIndex(int startIndex){ O]m+u
if(totalCount <= 0) y8DhOlewQ
this.startIndex = 0; *2GEnAZb7n
elseif(startIndex >= totalCount) [n/hkXa$\
this.startIndex = indexes JwXT%op9RP
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[indexes.length - 1]; `ta7Gc/:UY
elseif(startIndex < 0) plZ>03(6Q
this.startIndex = 0; |ely|U. Tf
else{ Zcc9e03
this.startIndex = indexes &e8s65`
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[startIndex / pageSize]; n-@j5w+k4
} ?)#5X_V-q
} -uy`!A
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publicint getNextIndex(){ nt@aYXK4|
int nextIndex = getStartIndex() + fX|Y;S-@+
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pageSize; 7!N2-6GV
if(nextIndex >= totalCount) Q0ON9gqqv
return getStartIndex(); nxl[d\ap+n
else E^SH\5B
return nextIndex; L5\WpM=
} s4uhsJL V$
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publicint getPreviousIndex(){ Vkc#7W(
int previousIndex = getStartIndex() - :dqn h
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pageSize; }O4^Cc6
if(previousIndex < 0) w4d--[Q
return0; W!&vul5
else yYH 0v7vx+
return previousIndex; ,c)uX#1
} (#E.`e1#6
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抽象业务类 a0ObBe'
java代码: aWY
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/** e;[F\ov%
* Created on 2005-7-12 TTTPxO,
*/ N
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package com.javaeye.common.business; ML>[^F
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import java.io.Serializable; fL=~NC"
import java.util.List; O|M{-)
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import org.hibernate.Criteria; $
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import org.hibernate.HibernateException; >\Ww;1yV
import org.hibernate.Session; wLOB}ZMT
import org.hibernate.criterion.DetachedCriteria; 9^G/8<^^>
import org.hibernate.criterion.Projections; Aw5HF34J
import
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org.springframework.orm.hibernate3.HibernateCallback; }=]M2}
import 3S}Pm2D2
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org.springframework.orm.hibernate3.support.HibernateDaoS hK,Sf ;5V
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upport; 7w6cwHrL@
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import com.javaeye.common.util.PaginationSupport; Ls] g
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public abstract class AbstractManager extends Tap.5jHL
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HibernateDaoSupport { MfWyc_
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privateboolean cacheQueries = false; d5gR"ja
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privateString queryCacheRegion; c:o]d )S
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publicvoid setCacheQueries(boolean Us0EG\Y
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cacheQueries){ j4uvS!
this.cacheQueries = cacheQueries; --c"0,7
} sv&;Y\2c
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publicvoid setQueryCacheRegion(String EKsT~SS
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queryCacheRegion){ |~vI3]}fx
this.queryCacheRegion = .w8J*JZ
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queryCacheRegion; l)&X$3? tz
} ''\Ov
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publicvoid save(finalObject entity){ SX#
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getHibernateTemplate().save(entity); `u
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} X6@WwM~qz
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publicvoid persist(finalObject entity){ V^Q#:@0
getHibernateTemplate().save(entity); yU-e3O7L
} A"G
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publicvoid update(finalObject entity){ .@@?Pj?)
getHibernateTemplate().update(entity); HV{wI1
} pw)||Q
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publicvoid delete(finalObject entity){ ,l:ORoND
getHibernateTemplate().delete(entity); t7j);W%e6
} +oovx2r&
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publicObject load(finalClass entity, f-`)^5E
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finalSerializable id){ rzm:Yx
return getHibernateTemplate().load :?g:~+hfO
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(entity, id); x"gd8j]s
} %B5wH_p
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publicObject get(finalClass entity, zGAq-<
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finalSerializable id){ YSTv\y
return getHibernateTemplate().get PE3vQH=t~
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(entity, id); 9NQlI1Wz4
} 5#+^E{
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publicList findAll(finalClass entity){ 06c>$1-?
return getHibernateTemplate().find("from OHb[qX\
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" + entity.getName()); '":lB]hS
} ]pNvxXbeW
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publicList findByNamedQuery(finalString qQ?"@>PALD
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namedQuery){ l0PZ`m+;j
return getHibernateTemplate ;h*K }U
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().findByNamedQuery(namedQuery); XkXHGDEf 1
} SEGri#s
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publicList findByNamedQuery(finalString query, ,D]QxbwZ
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finalObject parameter){ v*SEb~[
return getHibernateTemplate LSGBq
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().findByNamedQuery(query, parameter); W;'!gpa
} VcSVu
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publicList findByNamedQuery(finalString query, +zaA,e?\
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finalObject[] parameters){ CohDO
return getHibernateTemplate smRE!f*q
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().findByNamedQuery(query, parameters); qB0E_y)a
} O4cr*MCb5
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publicList find(finalString query){ Ay5i+)MD
return getHibernateTemplate().find :y%/u%L
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(query); &eCa0s?mI
} |:xYE{*)H
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publicList find(finalString query, finalObject $Q96,rb}k;
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parameter){ pgI^4h
return getHibernateTemplate().find Lvq>v0|
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(query, parameter); jV>raCK_
} B8V>NvE~o
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public PaginationSupport findPageByCriteria aWWU4xe
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(final DetachedCriteria detachedCriteria){ Li/O
return findPageByCriteria rV R1wsaL
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); .TND a&
} )Ch2E|C?=8
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public PaginationSupport findPageByCriteria g`vny )\7/
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(final DetachedCriteria detachedCriteria, finalint oX S1QT`B
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startIndex){ Bm.:^:&k
return findPageByCriteria <acUKfpY
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(detachedCriteria, PaginationSupport.PAGESIZE, E:JJ3X|
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startIndex); 2Ga7$q
} =BSzsH7
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public PaginationSupport findPageByCriteria F)&@P-9+
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(final DetachedCriteria detachedCriteria, finalint ]iN'x?Fo
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pageSize, :km61
finalint startIndex){ DcoX+8 7
return(PaginationSupport) }=gx#
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getHibernateTemplate().execute(new HibernateCallback(){ WN?O'E=2
publicObject doInHibernate Rot@x r7Hc
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(Session session)throws HibernateException { ewa wL"
Criteria criteria = -(bXSBs#
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detachedCriteria.getExecutableCriteria(session); KIui(n#/
int totalCount = =XucOli6
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((Integer) criteria.setProjection(Projections.rowCount y .#")IAF
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()).uniqueResult()).intValue(); U3T#6Rptl
criteria.setProjection *.sVr7=j
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(null); 42e|LUZg
List items = 10<x.8fSP
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criteria.setFirstResult(startIndex).setMaxResults `x
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@R/07&lBR
(pageSize).list(); {sihus#Q
PaginationSupport ps = ?t/~lv
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new PaginationSupport(items, totalCount, pageSize, K`iv c N"
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startIndex); Q1O}ly}JS
return ps; 5R'TcWf#W
} (qqOjz
}, true); vwjPmOjhS
} rai3<_W<
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public List findAllByCriteria(final 0fb`08,^
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DetachedCriteria detachedCriteria){ C8[&S&<_<
return(List) getHibernateTemplate &Q;sSIc
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().execute(new HibernateCallback(){ "x=f=;
publicObject doInHibernate !/}O>v~o
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(Session session)throws HibernateException { WM| dKF
Criteria criteria = |uqf:V`z:
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detachedCriteria.getExecutableCriteria(session); 7ePqmB<.
return criteria.list(); 0vEoGgY0*:
} vy0X_DPCr
}, true); LQ(yScA@
} [s"O mAy4
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public int getCountByCriteria(final X%Z{K-
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DetachedCriteria detachedCriteria){ 9:ze{ c $
Integer count = (Integer) LQtj~c>X-|
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getHibernateTemplate().execute(new HibernateCallback(){ &y3OR1_Sm*
publicObject doInHibernate 0~ZFv Wv
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(Session session)throws HibernateException { 9z}uc@#D=m
Criteria criteria = M)eO6oX|
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detachedCriteria.getExecutableCriteria(session); /4a._@1h[y
return (8Bk;bd
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criteria.setProjection(Projections.rowCount &