Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 I=Oy-
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 0~ &"
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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 ?/JBt
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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 {FI\~q
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分页支持类: = zl=SLe
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java代码: ? &zQaxD
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package com.javaeye.common.util; b8f+,2Tk
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import java.util.List; ^I]{7$6^
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publicclass PaginationSupport { f'6|OsVQ
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publicfinalstaticint PAGESIZE = 30; )uLr?$qe
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privateint pageSize = PAGESIZE; +/?iCmW
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privateList items; E-1"+p
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privateint totalCount; Iwpbf Z
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privateint[] indexes = newint[0]; &D#+6M&LK{
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privateint startIndex = 0; <1&Ke
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public PaginationSupport(List items, int K<v:-TjQZ:
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totalCount){ 2*U.^]~"{
setPageSize(PAGESIZE); yZJ*dadAr
setTotalCount(totalCount); mh;X~.98
setItems(items); Icp0A\L@
setStartIndex(0); 8G ]w,eF
} [$ :
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public PaginationSupport(List items, int ;5<-)
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totalCount, int startIndex){ !5x
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setPageSize(PAGESIZE); WP-jtZ?!"
setTotalCount(totalCount); A6ewdT?>,
setItems(items); Qrz4}0
setStartIndex(startIndex); ]#<
} s>z2 k
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public PaginationSupport(List items, int LEh)g[
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totalCount, int pageSize, int startIndex){ F?Or;p5`Y
setPageSize(pageSize); 30FykNh
setTotalCount(totalCount); ~_ !ts{[E
setItems(items); MY-.t-3
setStartIndex(startIndex); +zWrLf_Rc
} @XOi62(
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publicList getItems(){ |Vx~fK S\
return items; -O&"|
} z^sST
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publicvoid setItems(List items){ !v!N>f4S$
this.items = items; iUr xJh
} b"8FlZ$
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publicint getPageSize(){ za,2r^
return pageSize; Q2C)tVK+
} /BH.>R4`A
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publicvoid setPageSize(int pageSize){ {Iy7.c8S
this.pageSize = pageSize; s?O&ZB2GM[
} b?kPN:U#N/
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publicint getTotalCount(){ 2H&{1f\Bf
return totalCount; p27p~b&
} 2
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publicvoid setTotalCount(int totalCount){ kqB\xlS7k
if(totalCount > 0){ "@/ba!L+
this.totalCount = totalCount; ]Sta]}VQ
int count = totalCount / p[YWSjf
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pageSize; =aow
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if(totalCount % pageSize > 0) Um
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count++; KR3-Hb4
indexes = newint[count]; \;
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for(int i = 0; i < count; i++){ R!{7OkC
indexes = pageSize * R}J-nJlb
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} #J+\DhDEPO
}else{ uFe'$vI
this.totalCount = 0; /!bx`cKG
} _hoAW8i
} 0]a1 5
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publicint[] getIndexes(){ *4#on>
return indexes; [&n|\!
} ;4d.)-<No_
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publicvoid setIndexes(int[] indexes){ ?1m ,SK
this.indexes = indexes; +-HE'4mo
} Cnur"?w@o
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publicint getStartIndex(){ , ;'SVe%
return startIndex; ct\<;I(H
} 0=m&^Jpp
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publicvoid setStartIndex(int startIndex){ szn%wZW
if(totalCount <= 0) @+0V& jc
this.startIndex = 0; T` ;k!F46
elseif(startIndex >= totalCount) 3Vu8F"
this.startIndex = indexes JfKg_&hM
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[indexes.length - 1]; t/Z!O
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elseif(startIndex < 0) P7 8uq
this.startIndex = 0; "4[<]pq
else{ 2$ VTu+
this.startIndex = indexes }9Qf #&o
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[startIndex / pageSize]; )b (X
} kt<@H11
} #! @m y
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publicint getNextIndex(){ ]xB6cPdLu
int nextIndex = getStartIndex() + a&:>Ped"
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pageSize; )GCLK<,swu
if(nextIndex >= totalCount) ZX]A )5G
return getStartIndex(); -$tCF >,
else tnRJ#[Io
return nextIndex; hE5G!@1F
} 3d U#Ueu
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publicint getPreviousIndex(){ J]]\&MtaO
int previousIndex = getStartIndex() - #]5)]LF1q
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pageSize; 1 ?]J;9p
if(previousIndex < 0) QZYM9a>
return0; DD6 'M
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else A xR\ned
return previousIndex; &u4Ve8#
} i\Q":4
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}
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抽象业务类 "D!Dr1
java代码: lzI/\%
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/** _6/Qp`s
* Created on 2005-7-12 R_~F6O^EO
*/ fcn_<Yh0W
package com.javaeye.common.business; bF7`] 83
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import java.io.Serializable; 'iDu0LX
import java.util.List; X{|k<^:
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import org.hibernate.Criteria; 'U*udkn 2]
import org.hibernate.HibernateException; nO%<;-=u\
import org.hibernate.Session; kz|[*%10
import org.hibernate.criterion.DetachedCriteria; )rS^F<C
import org.hibernate.criterion.Projections; KD9Ca $-
import B4 <_"0
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org.springframework.orm.hibernate3.HibernateCallback; ]:Wb1
import R=QM;
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org.springframework.orm.hibernate3.support.HibernateDaoS 3dY6;/s
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upport; np&HEh 6
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import com.javaeye.common.util.PaginationSupport; =1_j aDp
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public abstract class AbstractManager extends hiT9H5 6>
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HibernateDaoSupport { MQhYJ01i
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privateboolean cacheQueries = false; jeyaT^F(
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privateString queryCacheRegion; Yr Preuh
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publicvoid setCacheQueries(boolean F'fM?!(
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cacheQueries){ >l6XZQ
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this.cacheQueries = cacheQueries; 9eksCxFg
} :s? y,
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publicvoid setQueryCacheRegion(String vBV"i9n
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queryCacheRegion){ Pau&4h0
this.queryCacheRegion = [UUM^!1
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queryCacheRegion; E]D4']
} REeD?u j
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publicvoid save(finalObject entity){ {"Y]/6
getHibernateTemplate().save(entity); <%T%NjNPQ
} tauP1&%oH{
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publicvoid persist(finalObject entity){ N}e(.
getHibernateTemplate().save(entity); <PH3gyC
} T749@! v`z
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publicvoid update(finalObject entity){ p=je"{
getHibernateTemplate().update(entity); ?d,acm
} =W97|BIW,
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publicvoid delete(finalObject entity){ KX&Od@cQ$
getHibernateTemplate().delete(entity); -uS7~Ww.a
} e{d_p%(
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publicObject load(finalClass entity, V1AEjh
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finalSerializable id){ GZ-n!
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return getHibernateTemplate().load ]&; G\9$y
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(entity, id); t2`X!`
} xNkwTDN5
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publicObject get(finalClass entity, [7CH(o1a&
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finalSerializable id){ s7X~OF(#
return getHibernateTemplate().get K[Ws/yc^a
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(entity, id); bDcWb2lqs
} NiU tH
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publicList findAll(finalClass entity){ RJ7/I/yD|
return getHibernateTemplate().find("from rmAP&Gw I
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" + entity.getName()); cftn`:(&8
} FeincZ!M
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publicList findByNamedQuery(finalString g@N=N
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namedQuery){ J/H#d')c
return getHibernateTemplate co(fGp#!
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().findByNamedQuery(namedQuery); 0n =9TmE
} ()rx>?x5
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publicList findByNamedQuery(finalString query, !S$oaCxM
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finalObject parameter){ M2;(+8 b
return getHibernateTemplate J,&