Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 2#^[`sFPO
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 V/Tp&+Z.c
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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 o0q{:An_Z
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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 C~B^sG@;
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分页支持类: H>B:jJf
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java代码: f &H`h
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package com.javaeye.common.util; C`ok{SNtUy
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import java.util.List; 9Y(<W_{/
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publicclass PaginationSupport { cg4,PI%hz
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publicfinalstaticint PAGESIZE = 30; R ~b$7jpd
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privateint pageSize = PAGESIZE; #q-t!C%E
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privateList items; E5rNC/Ul$$
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privateint totalCount; Y#G '[N>
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privateint[] indexes = newint[0]; ,70|I{,Km
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privateint startIndex = 0; uZNR]+Yu@
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public PaginationSupport(List items, int s=q}XIWK
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totalCount){ 82$^pg>
setPageSize(PAGESIZE); 607#d):Y
setTotalCount(totalCount); J&5|'yVX
setItems(items); "_^FRz#h
setStartIndex(0); Z^sO`C
} 7HzKjR=B
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public PaginationSupport(List items, int kys?%Y1
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totalCount, int startIndex){ PW}Yts7p
setPageSize(PAGESIZE); d;>:<{z@CD
setTotalCount(totalCount); k;%}%"EVZ
setItems(items); sbRg=k&Ns
setStartIndex(startIndex); =zsXa=<
} Ws=J)2q
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public PaginationSupport(List items, int (T@ov~@
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totalCount, int pageSize, int startIndex){ A2B&X}K|U
setPageSize(pageSize); 8!1o,=I$
setTotalCount(totalCount); % R'eV<
setItems(items); 3vy5JTCz~
setStartIndex(startIndex); j"f]pzg&
} )%Y$FLB
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publicList getItems(){ UZ
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return items; NoMEe<
} S"lcePN
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publicvoid setItems(List items){ M+Dkn3bx
this.items = items; ;$86.2S>B
} 7n#0eska,
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publicint getPageSize(){ fd(>[RP?
return pageSize; *?c~7ru
} zj8;ENhEI
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publicvoid setPageSize(int pageSize){ h.DQ6!?;s
this.pageSize = pageSize; ieObo foD
} )xi|BqQz
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publicint getTotalCount(){ \A':}<Rj
return totalCount; Y*4\K%e(
} .[~E}O
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publicvoid setTotalCount(int totalCount){ 7%aB>uA
if(totalCount > 0){ %F03cI,
this.totalCount = totalCount; py)V7*CgH
int count = totalCount / pxP7yJL`
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pageSize; keX0br7u_
if(totalCount % pageSize > 0) ~,ac{%8x
count++; M5D,YC3<
indexes = newint[count]; *@n%K,$v
for(int i = 0; i < count; i++){ K~[/n<ks
indexes = pageSize * Qg3
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} 4H{L>e
}else{ i<-#yL5
this.totalCount = 0; M[N|HsI8?
} dlyE2MiL:
} B~z&
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publicint[] getIndexes(){ yfYAA*S!z
return indexes; BHa!jw_~o
} #U'n=@U@(
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publicvoid setIndexes(int[] indexes){ #*?a"
this.indexes = indexes;
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}
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publicint getStartIndex(){ jo+T!CUM'
return startIndex; ='>k|s:
} ,~c:P>v=
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publicvoid setStartIndex(int startIndex){ cJL>,Z<|%
if(totalCount <= 0) yh} V u
this.startIndex = 0; DLf6D |"
elseif(startIndex >= totalCount) [S'ngQ"f`
this.startIndex = indexes
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[indexes.length - 1]; cLX~NPD/
elseif(startIndex < 0) C#;}U51:t
this.startIndex = 0; S__+S7]Nr
else{ ^-rb&kW@:
this.startIndex = indexes ?f:FmgQk
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[startIndex / pageSize]; 3xbA]u;gp
} )4 "G1R`3
} |7%M:7Q
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publicint getNextIndex(){ R$wo{{KX
int nextIndex = getStartIndex() + 3]/w3|y
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pageSize; izOtt^#DZt
if(nextIndex >= totalCount) t4
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return getStartIndex(); gy,B+~p
else qJUu9[3'm
return nextIndex; lfb]xu]O
} 'lg6<M%#[
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publicint getPreviousIndex(){ !y `wAm>n
int previousIndex = getStartIndex() - {'EQ%H$q
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pageSize; n`;=^^ B
if(previousIndex < 0) "m(HQ5e)*
return0; H"].G^V\6
else kznmA`#jn
return previousIndex; p e |k}{
} rWAJL9M
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} =l?5!f9
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抽象业务类 E*i <P
java代码: 9Iy>oV
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/** x)5#*Q
* Created on 2005-7-12 _T)dmhG
*/ U_B"B;ng+
package com.javaeye.common.business; c5nl!0XX
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import java.io.Serializable; 4F^(3RKZ|
import java.util.List; Tz:mj
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import org.hibernate.Criteria; {?$-p%CF`8
import org.hibernate.HibernateException; 58ev (f
import org.hibernate.Session; o!dTB,Molr
import org.hibernate.criterion.DetachedCriteria; uwU;glT
import org.hibernate.criterion.Projections; +Gg6h=u
import 7&DhEI ^
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org.springframework.orm.hibernate3.HibernateCallback; [f!sBJ!
import OjcxD5"v9
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org.springframework.orm.hibernate3.support.HibernateDaoS tl !o;`W
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upport; 8F9sKRq|rO
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import com.javaeye.common.util.PaginationSupport; }YfM<
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public abstract class AbstractManager extends * _)xlpy
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HibernateDaoSupport { ep>*]'
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privateboolean cacheQueries = false; {R5Q{]dK3
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privateString queryCacheRegion; .BuXg<`
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publicvoid setCacheQueries(boolean _VFl.U,
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cacheQueries){ $DuX1T
this.cacheQueries = cacheQueries; 4Z.G
} *fQ$s
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publicvoid setQueryCacheRegion(String no~hYyW2
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queryCacheRegion){ mR\rK&'6
this.queryCacheRegion = FJ#:RC
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queryCacheRegion; Vv8e"S
} zUF%`CR
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publicvoid save(finalObject entity){ qq9fZZb
getHibernateTemplate().save(entity); @*`9!K%
} ]@wee 08
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publicvoid persist(finalObject entity){ kmXpj3
getHibernateTemplate().save(entity); EZlcpCS
} G}<%%U D
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publicvoid update(finalObject entity){ e@}zp
getHibernateTemplate().update(entity); ~M7
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} !#wd~: H
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publicvoid delete(finalObject entity){ yqi=9NB
getHibernateTemplate().delete(entity); ~<!b}Hv
} 5Arx"=c
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publicObject load(finalClass entity, 0.7*2s-
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finalSerializable id){
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return getHibernateTemplate().load U>PF#@ C/
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(entity, id); O{:_-eI&d
} O4H %x
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publicObject get(finalClass entity, x =7hOI5u
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finalSerializable id){ nKPvAe(
return getHibernateTemplate().get /G[; kR"
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(entity, id); ZU\TA|
} mVUDPMyZ
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publicList findAll(finalClass entity){ t_%6,?S6
return getHibernateTemplate().find("from j{PuZ^v1
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" + entity.getName()); =23JE'^=
} M`^;h: DN^
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publicList findByNamedQuery(finalString _o'_ z ]
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namedQuery){ 4|i.b?"
return getHibernateTemplate 0`y;[qAG[
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().findByNamedQuery(namedQuery); aM/sD=}
} B^`'2$3
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publicList findByNamedQuery(finalString query, N]qX^RSb
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finalObject parameter){ CtItzp
return getHibernateTemplate /4w"akB|P
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