Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 W\L`5CW
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 E!O\87[
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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 `~W-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 3<=G?of
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分页支持类: .WQ+AE8Q
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java代码: {vE(l'
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package com.javaeye.common.util; sk|=% }y
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import java.util.List; s-ZI
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publicclass PaginationSupport { !(t,FYeH
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publicfinalstaticint PAGESIZE = 30; K)_WL]RJ.4
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privateint pageSize = PAGESIZE; u(!&:A9JFd
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privateList items; k;5P om
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privateint totalCount; WGAXIQ
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privateint[] indexes = newint[0]; > MG>=A
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privateint startIndex = 0; 1J?dK|% b
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public PaginationSupport(List items, int vEG'HOP
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totalCount){ HWm#t./
setPageSize(PAGESIZE); 5TUNX^AW
setTotalCount(totalCount); 8by@iQ
setItems(items); z* <y5
setStartIndex(0); z5]bia,
} aTzDew
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public PaginationSupport(List items, int :|1.seLQ
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totalCount, int startIndex){ nmjm<Bu
setPageSize(PAGESIZE); 2ij#
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;
setTotalCount(totalCount); m%#`y\]I
setItems(items); u
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setStartIndex(startIndex); *Ul*%!?D
} s4H2/EC
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public PaginationSupport(List items, int A`6ra}U<
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totalCount, int pageSize, int startIndex){ 9PUes3"v
setPageSize(pageSize); +1 eCvt:,
setTotalCount(totalCount); m?[5J)eR
setItems(items); Pgp {$ID
setStartIndex(startIndex);
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} ~]L}p
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publicList getItems(){ Zt E##p
return items; A 699FQ
} /b,TpuM^
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publicvoid setItems(List items){ La[K!u\B
this.items = items; ;,OfJ'q^
} C0x"pO7
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publicint getPageSize(){ rSVgWr8
return pageSize; [{&jr]w`|
} R,@g7p
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publicvoid setPageSize(int pageSize){ sNU}n<J-
this.pageSize = pageSize; g2p"LWex-
} ]qw0V
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publicint getTotalCount(){ 84&XW
return totalCount; D!TZI
} 7]22"mc
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publicvoid setTotalCount(int totalCount){ UU@fkk
if(totalCount > 0){ u@.>WHQN
this.totalCount = totalCount; '=cKU0
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int count = totalCount / $R^lo$(
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pageSize; [B6DC`M
if(totalCount % pageSize > 0) Jfg7\&|
count++; Qu~*46?0
indexes = newint[count]; _|,{ ^m|d
for(int i = 0; i < count; i++){ &:#m&,tQ
indexes = pageSize * +2T!z=
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} 0\a8}b||
}else{ %AR^+*Nu
this.totalCount = 0; g*-2*
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} 0rzVy/Z(
} kR6A3?[
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publicint[] getIndexes(){ Gq]d:-7l
return indexes; ; Zq/eiB
} ^9ng)
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publicvoid setIndexes(int[] indexes){ e.X@] PQJQ
this.indexes = indexes; |Cf
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} C{Blqf3V0
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publicint getStartIndex(){ ^Rmoz1d
return startIndex; `fW{yb
} w:Q|?30
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publicvoid setStartIndex(int startIndex){ KU2$5[~j
if(totalCount <= 0) H~m]nV,r
this.startIndex = 0; 5G?.T?
elseif(startIndex >= totalCount) *]{=8zc2
this.startIndex = indexes H`D f
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[indexes.length - 1]; /2h][zrZ[.
elseif(startIndex < 0) %CT!$Y'n
this.startIndex = 0; .Z5[_'T
else{ 4 =Fg!Eu<
this.startIndex = indexes @+dHF0aXd
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[startIndex / pageSize]; @"8~Y|L93
} '49L(>.
} .&(8(C
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publicint getNextIndex(){ |#cAsf_{
int nextIndex = getStartIndex() + @ta?&Qf)
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pageSize; ~'[jBn)
if(nextIndex >= totalCount) tw86:kYEz
return getStartIndex(); {_as!5l
else ;KS`,<^-
return nextIndex; F '#^`G9
} .Qk{5=l6P
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publicint getPreviousIndex(){ h60\ Y 8
int previousIndex = getStartIndex() - Y^5"qd|`
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pageSize; =~$U^IsWA
if(previousIndex < 0) U6a zhi&,
return0; +_-Y`O!Q
else gA"<MI'y
return previousIndex; r\bq[9dX>
} lrn+d$!@
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} kDg{>mf
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抽象业务类 %Il ;B~t
java代码: &*ZC0V3
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/** >& [3
* Created on 2005-7-12 {NY]L==H
*/ hOl=W |)v
package com.javaeye.common.business; w. vY(s
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import java.io.Serializable; UXQb={
import java.util.List; 6_Fpca3L
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import org.hibernate.Criteria; @F~0p5I
import org.hibernate.HibernateException; tgK x 4
import org.hibernate.Session; I=K[SY,]9
import org.hibernate.criterion.DetachedCriteria; =s6E/K
import org.hibernate.criterion.Projections; bt0djJRw
import .?70=8{
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org.springframework.orm.hibernate3.HibernateCallback; ujow?$&
import Sr-|,\/O
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org.springframework.orm.hibernate3.support.HibernateDaoS )< l\jfx e
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upport; (}sDm~;s
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import com.javaeye.common.util.PaginationSupport; QZ?O;K1|y
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public abstract class AbstractManager extends m\1VF\
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HibernateDaoSupport { |x*{fXdMhr
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privateboolean cacheQueries = false; EqVsxwa
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privateString queryCacheRegion; $+0=GN
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publicvoid setCacheQueries(boolean
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cacheQueries){ :EYu 4Y
this.cacheQueries = cacheQueries; p| Vmdnb
} p1Y+
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publicvoid setQueryCacheRegion(String P=&'wblm?
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queryCacheRegion){ a$~IQ2$|6
this.queryCacheRegion = "[#@;{@Gt
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queryCacheRegion; ^).WW
} #Tup]czO
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publicvoid save(finalObject entity){ s*aH`M7^0
getHibernateTemplate().save(entity); aytq4Ts
} ,}eRnl\
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publicvoid persist(finalObject entity){ .WBI%ci
getHibernateTemplate().save(entity); P'-JbPXU
} dCa}ITg
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publicvoid update(finalObject entity){ ?SB[lbU
getHibernateTemplate().update(entity); {E;2&d
} $, 8 CH)w
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publicvoid delete(finalObject entity){ aQl?d<|+lk
getHibernateTemplate().delete(entity); D?iy.Dg
} 6U;Jg_zS
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publicObject load(finalClass entity, "Czz,;0
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finalSerializable id){ 9(QU2QY
return getHibernateTemplate().load
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(entity, id); H.jLGe>
} kHt!S9r
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publicObject get(finalClass entity, @ChN_gd3!
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finalSerializable id){ LFk5rv'sM0
return getHibernateTemplate().get V-?sek{;
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(entity, id); <Cf7E
} O\|C,Epm
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publicList findAll(finalClass entity){ 9f@#SB_H
return getHibernateTemplate().find("from ki[;ZmQqY
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" + entity.getName()); G=r(SJq
} 0C7thl{Dms
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publicList findByNamedQuery(finalString xHM&csL
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namedQuery){ . 1{vpX
return getHibernateTemplate 9pVf2|5hj
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().findByNamedQuery(namedQuery); 1A|x$j6m
} #U",,*2
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publicList findByNamedQuery(finalString query, xWC\954
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finalObject parameter){ *3w/`R<\
return getHibernateTemplate beN>5coP%A
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().findByNamedQuery(query, parameter); ~aauW?
} y]z)jqX<
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publicList findByNamedQuery(finalString query, [#STR=_f
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finalObject[] parameters){ V'HlAQr
return getHibernateTemplate >,]
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().findByNamedQuery(query, parameters); @w#gRQCl
} S5*~r@8h
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publicList find(finalString query){ 1A`?y&
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return getHibernateTemplate().find j(@g
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(query); gJcXdv=]2
} ReHd~G9
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publicList find(finalString query, finalObject uDy>xJ|
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parameter){ Ul$X%
return getHibernateTemplate().find '1kj:Np
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(query, parameter); $8X tI
} U'h[{ek
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public PaginationSupport findPageByCriteria J1c&"Oh
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(final DetachedCriteria detachedCriteria){ #T$'.M
return findPageByCriteria }]39
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); (Q h7bfd
} .Kh(F6
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public PaginationSupport findPageByCriteria sjkKaid
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(final DetachedCriteria detachedCriteria, finalint +Qi52OG
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startIndex){
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return findPageByCriteria Mc$v~|i6
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(detachedCriteria, PaginationSupport.PAGESIZE, \@PUljU]
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startIndex); Y;> p)'z
} .X<"pd*@e
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public PaginationSupport findPageByCriteria V=l Q}sBY
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(final DetachedCriteria detachedCriteria, finalint [Tb3z:UUvf
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pageSize, )q]j?Z.
finalint startIndex){ /nMqEHCyg
return(PaginationSupport) J,^pt Ql
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getHibernateTemplate().execute(new HibernateCallback(){ H:{(CY?t
publicObject doInHibernate K}5$;W#
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(Session session)throws HibernateException { %dk$K!5D0
Criteria criteria = ?j4,^K3
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detachedCriteria.getExecutableCriteria(session); zk 'e6
int totalCount = 4Tzu"y
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((Integer) criteria.setProjection(Projections.rowCount Jn:GA@[I
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()).uniqueResult()).intValue(); : .w'gU_
criteria.setProjection |C2.Zay
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(null); {}_Oo%IVGK
List items = 1d@^,7MF-
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criteria.setFirstResult(startIndex).setMaxResults M"$RtS|h
q!oZ; $
(pageSize).list(); E~g}DKs_5
PaginationSupport ps = ~{7NTW
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new PaginationSupport(items, totalCount, pageSize, \FY De
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startIndex); q}A3"$-F
return ps; LYq2A,wm$
} -JO46
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}, true); BLH3$*,H
}
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public List findAllByCriteria(final 1]3bx N
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DetachedCriteria detachedCriteria){ Sl<-)a:
return(List) getHibernateTemplate x2&