Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 c+6/@y
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 tQSj[Yl
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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 r/X4Hy0!lT
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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 S$CO T)7
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分页支持类: 1'skCR|!<
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java代码: j\^0BTZ
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package com.javaeye.common.util; 6GxQ<
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import java.util.List; [m9Pt]j@
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publicclass PaginationSupport { U({20
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publicfinalstaticint PAGESIZE = 30; h'i8o>7
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privateint pageSize = PAGESIZE; 63s<U/N
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privateList items; ?[$=5?
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privateint totalCount; ;2o+|U@
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privateint[] indexes = newint[0]; p^2"g~
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privateint startIndex = 0; T6X%.tR>`
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public PaginationSupport(List items, int 8+m[ %5lu
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totalCount){ Gj[+{
setPageSize(PAGESIZE); MA:2]l3e
setTotalCount(totalCount); Hpo/CY/
setItems(items); 0-)D`s%
setStartIndex(0); $ae*3L>5M
} b.qp&2 A
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public PaginationSupport(List items, int #n= b*.
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totalCount, int startIndex){ U'pm5Mc\q
setPageSize(PAGESIZE); Zk#^H*jgx
setTotalCount(totalCount); z3l=aAw8
setItems(items); &*G+-cF
setStartIndex(startIndex); mhp&;
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} jzuOs,:R
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public PaginationSupport(List items, int 2gn*B$a
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totalCount, int pageSize, int startIndex){ Nhh2P4gH
setPageSize(pageSize); 5:jbd:o
setTotalCount(totalCount); P);:t~
setItems(items); 5rAI[r
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setStartIndex(startIndex); moQ><>/
} ZE#f{qF(
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publicList getItems(){ E,Q>jH
return items; xy@1E;
} IAr
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publicvoid setItems(List items){ eqt+EiH
this.items = items; SZOcFmC?
} P!?Je/Tz]
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publicint getPageSize(){ hcQvL>
return pageSize; ap;tggi(H
} zVLv-U/=d
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publicvoid setPageSize(int pageSize){ ^!]Hm&.a
this.pageSize = pageSize; FHNK%Ko
} zw{cli&S
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publicint getTotalCount(){ ,2F4S5F~rC
return totalCount; 8^fkY'x
} 9N9dQ}[:g
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publicvoid setTotalCount(int totalCount){ .xtjB8gc
if(totalCount > 0){ B/IPG~aMEZ
this.totalCount = totalCount; qp(F}@
int count = totalCount / *}9i@DP1,
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pageSize; LEM{$Fxo&
if(totalCount % pageSize > 0) 4\HB rd#P
count++; h&7]Bp
indexes = newint[count]; [3a-1,
for(int i = 0; i < count; i++){ o0- 7# 2
indexes = pageSize * AL.zF\?
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} 2Wlk]
}else{ {~g(WxE
this.totalCount = 0; 6qA48:/F=
} _=c>>X
} $9znRTFEj
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publicint[] getIndexes(){ J@ x%TA
return indexes; Sd;/yC 8
} 3F,$}r#
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publicvoid setIndexes(int[] indexes){ QN[-XQ>Xt
this.indexes = indexes; )hH9VGZq(
} W11Wv&
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publicint getStartIndex(){ %?^T^P
return startIndex; ^'S0A=1
} Lm<"W_
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publicvoid setStartIndex(int startIndex){ 9X8{"J
if(totalCount <= 0) )u7*YlU\I
this.startIndex = 0; Wxl^f?I`:
elseif(startIndex >= totalCount) OE(H:^ZR
this.startIndex = indexes !FweXFl
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[indexes.length - 1]; qvz2u]IOw
elseif(startIndex < 0) Wjt1NfS&
this.startIndex = 0; `nccRy<l
else{ a^qLyF&F
this.startIndex = indexes \Q"o\:IoIT
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[startIndex / pageSize]; 6JWCB9$4
} $AAv%v
} <{7CS=)
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publicint getNextIndex(){ &sL(|>N
int nextIndex = getStartIndex() + @;}bBHQz{p
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pageSize; %dTkw+J
if(nextIndex >= totalCount) 66<3zadJZU
return getStartIndex(); SCk2D!u
else ~U&,hFSPY
return nextIndex; &6A'}9Ch
} yH>`Kbf T
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publicint getPreviousIndex(){ @psyO]D=j%
int previousIndex = getStartIndex() - }7CMXw
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pageSize; hkw;W[ZWa
if(previousIndex < 0) 3X$)cZQ
return0; .$+]N[-=
else OKfJ
return previousIndex; 8~?3: IZ
} yc5C`r +6
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} :mLcb.E
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抽象业务类 @cPb*
java代码: f3e#.jan
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/** >ir'v5
* Created on 2005-7-12 u2
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*/ FR9<$
package com.javaeye.common.business; X l#P@60
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import java.io.Serializable; >TUs~
import java.util.List; c6sGjZdR
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import org.hibernate.Criteria; x[7jm"Pz
import org.hibernate.HibernateException; 8DbXv~3@
import org.hibernate.Session; edhNQWn
import org.hibernate.criterion.DetachedCriteria; `e]L.P_e?
import org.hibernate.criterion.Projections; v4!zB9d
import g\&[;v
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org.springframework.orm.hibernate3.HibernateCallback; > 4ex:Z
import b7g\wnV8z
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org.springframework.orm.hibernate3.support.HibernateDaoS )n 1b
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upport; ~H/|J^ J
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import com.javaeye.common.util.PaginationSupport; naCPSsei
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public abstract class AbstractManager extends 24"Trg\WK[
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HibernateDaoSupport { Ed ,`1+
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privateboolean cacheQueries = false; (Da/$S.
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privateString queryCacheRegion; /]_T
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publicvoid setCacheQueries(boolean 'M185wDdAl
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cacheQueries){ 6lO]V=+
this.cacheQueries = cacheQueries; VTySKY+
} qEr2Y/:i"
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publicvoid setQueryCacheRegion(String
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queryCacheRegion){ 0ZPwEP
this.queryCacheRegion = EZaWEW
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queryCacheRegion; 9@
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} 9K~2!<
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publicvoid save(finalObject entity){ j*>+^g\Q6
getHibernateTemplate().save(entity); Kdk0#+xtP
} 1eQ9(hzF
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publicvoid persist(finalObject entity){ [hA%VF.9
getHibernateTemplate().save(entity); "l!WO`.zp=
} #pP4\n-~hU
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publicvoid update(finalObject entity){ *JE%bQ2Q
getHibernateTemplate().update(entity); Twyx(~'&R
} R/r)l<X@
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publicvoid delete(finalObject entity){ 3TqC.S5+
getHibernateTemplate().delete(entity); F,Q\_H##x4
} Vrn. #d
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publicObject load(finalClass entity, W)3?T&`
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finalSerializable id){ )z-)S
return getHibernateTemplate().load zvV<0 Z
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(entity, id); )orVI5ti
} lP& 7U
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publicObject get(finalClass entity, ^%|,G:r
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finalSerializable id){ I&~kwOP
return getHibernateTemplate().get J$
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(entity, id); j_*$Avy
} JP`$A
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publicList findAll(finalClass entity){ cHOtMPyQ
return getHibernateTemplate().find("from MTo<COp($
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" + entity.getName()); <<`*o[^L
} :;W[@DeO[
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publicList findByNamedQuery(finalString xF:
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namedQuery){ ifj%!*
return getHibernateTemplate 0"7%*n."2
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().findByNamedQuery(namedQuery); D/)wg$MI
} l+!!S"=8)~
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publicList findByNamedQuery(finalString query, pSp/Qpb-B
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finalObject parameter){ j#QJ5(#
return getHibernateTemplate P8!ON=
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().findByNamedQuery(query, parameter); /5Aum?~
} $U%M]_
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publicList findByNamedQuery(finalString query, Y,Dd}an
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finalObject[] parameters){ hw! l{yv
return getHibernateTemplate m=D2|WA8
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().findByNamedQuery(query, parameters); NRu_6~^^
} mM&Sq;JJ;
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publicList find(finalString query){ @_s`@,=
return getHibernateTemplate().find Ie{98
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(query); /jl{~R#1
} !>QS746S@
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publicList find(finalString query, finalObject j6v|D>I
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parameter){
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return getHibernateTemplate().find xi['knUi2-
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(query, parameter); MmiC%"7wt
} wZ6D\I
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public PaginationSupport findPageByCriteria oV"d%ks
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(final DetachedCriteria detachedCriteria){ eewhT^
return findPageByCriteria {gh41G;n
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); _CqVH5U?
} _8t5rF
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public PaginationSupport findPageByCriteria <vMna< /d
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(final DetachedCriteria detachedCriteria, finalint e_'/4
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startIndex){ ^b|Z<oF
return findPageByCriteria H$'|hUwds%
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(detachedCriteria, PaginationSupport.PAGESIZE, =k.:XblEe[
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startIndex); sF9{(Us
} +&hhj~I.
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public PaginationSupport findPageByCriteria _)|_KQQu
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(final DetachedCriteria detachedCriteria, finalint .*XELP=BT
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pageSize, +;z^qn
finalint startIndex){ W\]bh'(
return(PaginationSupport) ;R[ xo!
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getHibernateTemplate().execute(new HibernateCallback(){ vByt_X
publicObject doInHibernate =&+]>g{T
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(Session session)throws HibernateException { &L7u//
Criteria criteria = m(0sG(A~
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#{
detachedCriteria.getExecutableCriteria(session); \s_lB~"P!3
int totalCount = [5[}2B_t
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((Integer) criteria.setProjection(Projections.rowCount fP 1V1ao
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()).uniqueResult()).intValue(); t][U`1>i
criteria.setProjection zED#+-7
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(null); L{`S^'P<
List items = 5mzOr4*0
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criteria.setFirstResult(startIndex).setMaxResults =BD} +(3
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(pageSize).list(); ?O(@BT
PaginationSupport ps = BR&T,x/d
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new PaginationSupport(items, totalCount, pageSize, 'I$-h<W
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startIndex); pe^hOzVv
return ps; ggluQGA
} 5ggmS<=
}, true); R-7.q
} t "y[
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public List findAllByCriteria(final (PVK|Q55y
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DetachedCriteria detachedCriteria){ 3[q&%Z.
return(List) getHibernateTemplate 0cYd6u@
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().execute(new HibernateCallback(){ ~kDR9s7
publicObject doInHibernate '8%pEl^
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(Session session)throws HibernateException { G.j R
Criteria criteria = S8=Am7D]1
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detachedCriteria.getExecutableCriteria(session); V[9#+l~#
return criteria.list(); * SAYli+@
} bx!uHL=
}, true); 4Vv~
} u_kcuN\Sq
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public int getCountByCriteria(final kXjrc
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DetachedCriteria detachedCriteria){ VSm[80iR0
Integer count = (Integer) 01N]|F:
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getHibernateTemplate().execute(new HibernateCallback(){ ^pI&f{q
publicObject doInHibernate v?AQ&