Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 81KtK[?b
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 qzG'Gz{{qu
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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 \K4m~e@!
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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 ^hgpeu
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分页支持类: )Qo6bei!
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java代码: bv] ZUF0
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package com.javaeye.common.util; m:H )b{
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import java.util.List; ffWvrY;j[
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publicclass PaginationSupport { %AJdtJ@0H
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publicfinalstaticint PAGESIZE = 30; i7p3GBXh[
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privateint pageSize = PAGESIZE; WT0U)x( m5
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privateList items; F
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privateint totalCount; yZ2,AR%
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privateint[] indexes = newint[0]; 4f1*?HX&
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privateint startIndex = 0; 2{%BQq>C
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public PaginationSupport(List items, int ~vt8|OOo0
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totalCount){ [m4<j
setPageSize(PAGESIZE); ':fVb3A[*d
setTotalCount(totalCount);
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setItems(items); qzH97<M}T
setStartIndex(0); > vahj,CZZ
} r"4:aKF>
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public PaginationSupport(List items, int T|=8jt,
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totalCount, int startIndex){ 1\3n
setPageSize(PAGESIZE); 1,/oS&?E
setTotalCount(totalCount); )i?wBxq'MA
setItems(items); TcqqAc
setStartIndex(startIndex); ?$gEX@5h
} Coyop#q#"{
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public PaginationSupport(List items, int R` N-^x
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totalCount, int pageSize, int startIndex){ #\"5:.H Oz
setPageSize(pageSize);
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setTotalCount(totalCount); `fL$t0"
setItems(items); Ms$kL'/
setStartIndex(startIndex); YlYTH_L>E
} 2#rF/!`^
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publicList getItems(){ P3:hGmk8|j
return items; 1ptP ey
} 7y60-6r
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publicvoid setItems(List items){ \:Nbl<9(9
this.items = items; [3\}Ca1
} .NPai4V'
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publicint getPageSize(){ j#Y8h5r
return pageSize; HID;~Ne
} ;MO
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publicvoid setPageSize(int pageSize){ :0]KIybt
this.pageSize = pageSize; , n+dB2\
} Dl7#h,GTc<
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publicint getTotalCount(){ 8J>s|MZ
return totalCount; .<tb*6rX>
} PB`94W
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publicvoid setTotalCount(int totalCount){ P>)qN,a
if(totalCount > 0){ p{88v3b6
this.totalCount = totalCount; }3QEclZr
int count = totalCount / yYW>)
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pageSize; U/TF,JUI
if(totalCount % pageSize > 0) QYg2'`(
count++; x=9drKIw>
indexes = newint[count]; B>JRta;hj
for(int i = 0; i < count; i++){ iptzVr#b[
indexes = pageSize * X)'uTf0
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} ;]'mx
}else{ }PoB`H'K5
this.totalCount = 0; G"C'/
} o8Tt|Lxb$8
} QV" |
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publicint[] getIndexes(){ ]r|X[9
return indexes; SkS
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} Id9hC<8$dq
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publicvoid setIndexes(int[] indexes){ A?Uyj
this.indexes = indexes; 0*+i~g,Kl@
} g_-Y-.M
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publicint getStartIndex(){ {Z$Aw4a"d
return startIndex; dMYDB
} -cOLgrmp
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publicvoid setStartIndex(int startIndex){ yv&&x.!.Z
if(totalCount <= 0) Fd0R?d
this.startIndex = 0; O$KLQ '0"n
elseif(startIndex >= totalCount) l+RBe<Mq
this.startIndex = indexes (rvK@
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[indexes.length - 1]; >12phLu
elseif(startIndex < 0) `n$pR8TZ_
this.startIndex = 0; LKTIwb>
else{ j^>J*gLM}W
this.startIndex = indexes ^Qq_|{vynf
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[startIndex / pageSize]; YGNO]Q~A
} F!'y47QD
} tpU[KR[-
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publicint getNextIndex(){ K&\xbT
int nextIndex = getStartIndex() + <-FAF:6$@@
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pageSize; `!
if(nextIndex >= totalCount) [Jwo,?w
return getStartIndex(); '4ftclzL
else P @G2F:}
return nextIndex; $O?&!8);,
} 3D(/k%;)
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publicint getPreviousIndex(){ j0>Q:hn
int previousIndex = getStartIndex() - =:uK$>[
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pageSize; n~@;[=o?5
if(previousIndex < 0) P|l62!m<
return0; I^emH+!MW
else j!F5gP-l
return previousIndex; 9-5H~<}fF
} 4v_<<l
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} 3)3?/y)_
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抽象业务类 a~>+I~^K5q
java代码: ]MKW5Kq
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/** fp^{612O?
* Created on 2005-7-12
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*/ hxZ5EKBy
package com.javaeye.common.business; B<%cqz@
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import java.io.Serializable; !{>'jvH
import java.util.List; jJml[iC
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import org.hibernate.Criteria; *j6KQZ"
import org.hibernate.HibernateException; uB_8P+h7
import org.hibernate.Session; H`d595<=i;
import org.hibernate.criterion.DetachedCriteria; @y]ek/
import org.hibernate.criterion.Projections; VKqIFM1b
import IOhJL'r
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org.springframework.orm.hibernate3.HibernateCallback; $KHw=<:)/
import ])`w_y(>
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org.springframework.orm.hibernate3.support.HibernateDaoS W8,4LxH
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upport; lJb1{\|.,
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import com.javaeye.common.util.PaginationSupport; <NKmLAfX
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public abstract class AbstractManager extends RUco3fZ
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HibernateDaoSupport { A{NKHn>%`
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privateboolean cacheQueries = false; 4}.PQ{
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privateString queryCacheRegion; >8M=REn4
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publicvoid setCacheQueries(boolean S#Q0aGj
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cacheQueries){ Is&0h|
this.cacheQueries = cacheQueries; 0gTv:1F/
} WVZ](D8Gc]
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publicvoid setQueryCacheRegion(String Ec'Hlsgh&T
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queryCacheRegion){ RRRF/Z;))
this.queryCacheRegion = !B|Aq-
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queryCacheRegion; ] MP*5U>;
} .,h>2;f
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publicvoid save(finalObject entity){ H1Jk_@b
getHibernateTemplate().save(entity); LuW>8K\
} x%_VzqR`
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publicvoid persist(finalObject entity){ aQ.QkMZ
getHibernateTemplate().save(entity); ]w,:T/Z}
} !WSY75
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publicvoid update(finalObject entity){ w :nYsuF
getHibernateTemplate().update(entity); 5}C.^ J`
} ^Y%'"QwJS
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publicvoid delete(finalObject entity){ P K+rr.k]
getHibernateTemplate().delete(entity); .q90+9Ek=
} ]y0bgKTK
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publicObject load(finalClass entity, QHU|aC{r
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finalSerializable id){ &u+l`F^Z
return getHibernateTemplate().load VdL*"i
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(entity, id); pl}nbY
} C]EkVcKFA
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publicObject get(finalClass entity, {'8td^JEE
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finalSerializable id){ /PZx['g
return getHibernateTemplate().get Zh
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(entity, id); dl]pdg<
} 5bB\i79$
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publicList findAll(finalClass entity){ &2,3R}B/
return getHibernateTemplate().find("from .}9Lj
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" + entity.getName()); 'kOkwGf!
} ~U r
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publicList findByNamedQuery(finalString LwlO)|E
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namedQuery){ ]-j.\+(*
return getHibernateTemplate oBO4a^D
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().findByNamedQuery(namedQuery); 'aWqj+Wbh
} **V8a-@
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publicList findByNamedQuery(finalString query, /8#e < p
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finalObject parameter){ aPdEEqc\l
return getHibernateTemplate {j6$'v)0
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().findByNamedQuery(query, parameter); 5jq @ nq6
} u\{MQB{T
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publicList findByNamedQuery(finalString query, z+Guu8
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finalObject[] parameters){ ;kI)j
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return getHibernateTemplate Z;O!KsJ
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().findByNamedQuery(query, parameters); =Vm3f^
} `w&?SXFO8
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publicList find(finalString query){ =2t=Zyp0Y
return getHibernateTemplate().find wz..
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(query); RNF%i~nhO
} &S=Qu?H
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publicList find(finalString query, finalObject Gf
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