Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 _\yrR.HIa
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 yH_L<n
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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 !g:UkU\J
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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 JHpoW}7QB
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分页支持类: f:iK5g
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java代码: *]G&pmMs
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package com.javaeye.common.util; tV2SX7N
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import java.util.List; .UNh\R?r
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publicclass PaginationSupport { tm\ <w H
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publicfinalstaticint PAGESIZE = 30; ^9T6Ix{=
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privateint pageSize = PAGESIZE; n=v4m_e
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privateList items; %8iA0t+
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privateint totalCount; I\V33Nd
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privateint[] indexes = newint[0]; rXo2MX@u
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privateint startIndex = 0; DJgk"'
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public PaginationSupport(List items, int wqo2iRql
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totalCount){ j}YZl@dYV
setPageSize(PAGESIZE); rN?
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setTotalCount(totalCount); -F,o@5W>Y
setItems(items); U,/NygB~
setStartIndex(0); Y+N^_2@+C
} ^5vFF@to
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public PaginationSupport(List items, int )CS7>Vx
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totalCount, int startIndex){ N^|r.J
setPageSize(PAGESIZE); cqeId&Cg
setTotalCount(totalCount); G-oCA1UdN
setItems(items); R= HN>(U
setStartIndex(startIndex); S|T:rc(~
} ?!(/;RU1
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public PaginationSupport(List items, int @%J?[PG
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totalCount, int pageSize, int startIndex){ )>at]mH
setPageSize(pageSize); lD2>`s5
setTotalCount(totalCount); @Zd+XWFw
setItems(items); %_+9y??
setStartIndex(startIndex); KmV#%
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} ]OY6.m
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publicList getItems(){ >>krH'79
return items; Y5LESZWo
} aA%$<ItH
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publicvoid setItems(List items){ C|"T!1MlY4
this.items = items; f
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} q,d]i/T
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publicint getPageSize(){ ]>E9v&X0
return pageSize; T,(IdVlJ
} Rz`<E97-
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publicvoid setPageSize(int pageSize){ `u:U{m
this.pageSize = pageSize; #c4LdZu9
} ;3\Fb3d
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publicint getTotalCount(){ f4s[R0l
return totalCount; QHr
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} DLyHC=%{+h
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publicvoid setTotalCount(int totalCount){ ?t)y/@eG
if(totalCount > 0){ x=1G|<z%
this.totalCount = totalCount; 8+a/x#b-
int count = totalCount / 4q@o4C<0
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pageSize; 05*_h0}
if(totalCount % pageSize > 0) 'DsfKR^s
count++; &0f7>.y
indexes = newint[count]; 2bX!-h
for(int i = 0; i < count; i++){ y=9a2[3Dz
indexes = pageSize * -j3 -H&
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} <)Kjf/x
}else{ T'XAcH
this.totalCount = 0; oiO3]P]P
} &\sg~
} H?40yu2m5
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publicint[] getIndexes(){ hv*n";V
return indexes; oZ6xHdPc4
} F&lc8
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publicvoid setIndexes(int[] indexes){ 9Lz)SYd
this.indexes = indexes; qCgP8U/jv
} mm#U a/~1u
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publicint getStartIndex(){ |BH,
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return startIndex; k`)LO`))
} M#S8x@U
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publicvoid setStartIndex(int startIndex){ >jl"Yr#
if(totalCount <= 0) r\],5x'xSu
this.startIndex = 0; ~R)w
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elseif(startIndex >= totalCount) @{I55EQ]
this.startIndex = indexes Qk-y0
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[indexes.length - 1]; G&C)`};
elseif(startIndex < 0) ?2EzNN cS
this.startIndex = 0; GU&XK7L
else{ U\VwJ2
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this.startIndex = indexes ie.cTTOI
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[startIndex / pageSize]; qwFn(pK[
} m$LZ3=v%8
} W\~ZmA.
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publicint getNextIndex(){ T>f-b3dk
int nextIndex = getStartIndex() + )STt3.
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pageSize; Cc Ni8Wg_
if(nextIndex >= totalCount) DvOg|XUU0
return getStartIndex(); njUM>E,'
else {zF
return nextIndex; eA4*Be;9e
} m(OBk;S~
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publicint getPreviousIndex(){ kIWQ`)'
int previousIndex = getStartIndex() - M!X@-t#
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pageSize; |?8CV\D!
if(previousIndex < 0) gX(QRQ
return0; v?LJ_>hw*T
else =?*V3e3{
return previousIndex; 3J,/bgL5
} &OzJ^G\o
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} :cynZab
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抽象业务类 K4RjGSaF
java代码: ;( 2uQ#Y
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/** LoCxoAg
* Created on 2005-7-12 "R9kF-
*/ H`io|~Q
package com.javaeye.common.business; pwZ &2&|
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import java.io.Serializable; A1'IK.
import java.util.List; @~N#)L^
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import org.hibernate.Criteria; R,^FJ
import org.hibernate.HibernateException; ,*lK4?v
import org.hibernate.Session; RgRcW5VxK
import org.hibernate.criterion.DetachedCriteria; 0?`#ko7~d
import org.hibernate.criterion.Projections; z.H`a+cl
import qob!!A14p
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org.springframework.orm.hibernate3.HibernateCallback; A23 Z)`
import Tf[]vqa`G
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org.springframework.orm.hibernate3.support.HibernateDaoS bg=`
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upport; gTQ6B,`/8
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import com.javaeye.common.util.PaginationSupport; Z'j<wRf
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public abstract class AbstractManager extends d*AV(g#B
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HibernateDaoSupport { ^a}{u$<
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privateboolean cacheQueries = false; 6R,;c7Izhd
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privateString queryCacheRegion; #M>E{w9
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publicvoid setCacheQueries(boolean 0yZw`|Zh[
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cacheQueries){ r-0
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this.cacheQueries = cacheQueries; 1%:A9%O)t
} gSv<.fD"
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publicvoid setQueryCacheRegion(String ?nn,RBS-
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queryCacheRegion){ #,9|Hr%
this.queryCacheRegion = bQ4 }no0
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queryCacheRegion; (#,.;Y
} v|'N|k l
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publicvoid save(finalObject entity){ 7xcYM
getHibernateTemplate().save(entity); qqAsh]Z
} @]7\.>)
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publicvoid persist(finalObject entity){ L7b{H2 2
getHibernateTemplate().save(entity); @Uu\x~3y
} x~z 2l#ow
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publicvoid update(finalObject entity){ j)0R*_-B[
getHibernateTemplate().update(entity); Nl8Cctrf
}
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publicvoid delete(finalObject entity){ lu}[XN
getHibernateTemplate().delete(entity); #}Cwn$
} 0t&H1xsxX
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publicObject load(finalClass entity, .edZKmC6
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finalSerializable id){ 'GyPl
return getHibernateTemplate().load yUG5'<lX
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(entity, id); ][mc^eI0s|
} ?|/}~nj7
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publicObject get(finalClass entity, r6)1Y`K=9
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finalSerializable id){ Rju8%FRO
return getHibernateTemplate().get &Y>u2OZ
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(entity, id); ig,|3(
} vOS0E^
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publicList findAll(finalClass entity){ `iI"rlc
return getHibernateTemplate().find("from buFtLPe
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" + entity.getName()); n\YxRs7
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} `3KprpE8v
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publicList findByNamedQuery(finalString }M9al@"
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namedQuery){ i<?4iwX%i*
return getHibernateTemplate MD)"r>k
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().findByNamedQuery(namedQuery); O /&%`&2
} m [g}vwS
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publicList findByNamedQuery(finalString query, f0s
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finalObject parameter){ \2,18E
return getHibernateTemplate (AYS>8O&
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().findByNamedQuery(query, parameter); _ XZ=4s
} h"ylpv+
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publicList findByNamedQuery(finalString query, |DD?3#G01
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finalObject[] parameters){ $%JyM
return getHibernateTemplate t["Df;"O
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().findByNamedQuery(query, parameters); S+G)&<a^
} ,LZ:y1z'V-
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publicList find(finalString query){ uH[0kh
return getHibernateTemplate().find OpLSjr
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(query); E'8Bw7Tz
} 'qJ-eQ7e
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publicList find(finalString query, finalObject JWL J<z
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parameter){ 6hK"k
return getHibernateTemplate().find DeA'D|
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(query, parameter); %b;+/s2W
} %#9 ~V
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public PaginationSupport findPageByCriteria ?<'W~Rm6n
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(final DetachedCriteria detachedCriteria){ S(i(1Hs.
return findPageByCriteria b<AE}UK
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); h\d($Ki
} PEEY;x
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public PaginationSupport findPageByCriteria "S`wwl
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(final DetachedCriteria detachedCriteria, finalint _KVB~loT
:, [!8QP
startIndex){ #ya|{K
return findPageByCriteria ->I{
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(detachedCriteria, PaginationSupport.PAGESIZE, HDyZzjgG
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startIndex); B5HdC%8/}
} vXyo
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public PaginationSupport findPageByCriteria ukf\*
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(final DetachedCriteria detachedCriteria, finalint tq[",&K
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pageSize, t[,T}BCy.
finalint startIndex){ (B,t
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return(PaginationSupport) *u'`XRJU/
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getHibernateTemplate().execute(new HibernateCallback(){ ]wpYxos
publicObject doInHibernate +A ?+G
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(Session session)throws HibernateException { r/sRXM:3cZ
Criteria criteria = Ko|xEz=
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detachedCriteria.getExecutableCriteria(session); zl
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int totalCount = ;n{j,HB
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((Integer) criteria.setProjection(Projections.rowCount f^sb0nU
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()).uniqueResult()).intValue(); EJaaW&>[
criteria.setProjection L_ qv<iM$
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(null); /{MH'
List items = efkie}
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criteria.setFirstResult(startIndex).setMaxResults lkWeQ)V
((>3,%B`
(pageSize).list(); vKf;&`^qE
PaginationSupport ps = GnrW{o
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new PaginationSupport(items, totalCount, pageSize, W#7-%oT
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startIndex); -sH.yAvC6
return ps; k,iV$,[TF
} Ox*T:5
}, true); #u5;utY:F
} ?Wz(f {Hm
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public List findAllByCriteria(final RyQ\5^z
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DetachedCriteria detachedCriteria){ PSqtZN
return(List) getHibernateTemplate ~uZLe\>K
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().execute(new HibernateCallback(){ nB Iv{
publicObject doInHibernate '`~(Fkj
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(Session session)throws HibernateException { $17
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Criteria criteria = 4U
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detachedCriteria.getExecutableCriteria(session); (VI* c!N
return criteria.list(); }%ZG>LG5J
} 0/00W6r0
}, true); (9 z.IH7}k
} UNcJ=
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public int getCountByCriteria(final vQTQS[R=z
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DetachedCriteria detachedCriteria){ 8j+:s\
Integer count = (Integer) M=
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getHibernateTemplate().execute(new HibernateCallback(){ {9|$%4kRl
publicObject doInHibernate J (&M<<%
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(Session session)throws HibernateException { z'}= A
Criteria criteria = c;8"vJ
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detachedCriteria.getExecutableCriteria(session); 5nM9!A\D
return >-|90CSdSJ
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criteria.setProjection(Projections.rowCount 0m YZ7S5g
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