Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 +w.Kv
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 9I\3T6&tr
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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 Dum`o^l#
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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 egvy#2b@
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分页支持类: ;hA7<loY
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java代码: f4k5R
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package com.javaeye.common.util; T_x+sv=|X!
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import java.util.List; As+;qNO
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publicclass PaginationSupport { W/r mm*
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publicfinalstaticint PAGESIZE = 30; 48CI8[T
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privateint pageSize = PAGESIZE; QG|GXp_q`
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privateList items; 9*|3E"Vr
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privateint totalCount; v0C;j(2zb
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privateint[] indexes = newint[0]; #t@x6Vt
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privateint startIndex = 0; )4~sQ^}
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public PaginationSupport(List items, int :@ E1Pun?
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totalCount){ Dk`4bYK
setPageSize(PAGESIZE); }@14E-N=
setTotalCount(totalCount); ;}WtJ&y=M
setItems(items); P-+M,>vNy[
setStartIndex(0); ZS XRzH~0
} lU$4NUwM
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public PaginationSupport(List items, int g. ?*F#2
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totalCount, int startIndex){ +`*qlP;
setPageSize(PAGESIZE); 7wQ+giu
setTotalCount(totalCount); `pi-zE)
setItems(items); t0bhXFaiE
setStartIndex(startIndex); \-
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} sm;E2BR$
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public PaginationSupport(List items, int `~_H=l9{
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totalCount, int pageSize, int startIndex){ E69:bQ94u
setPageSize(pageSize); qByNHo7Tb
setTotalCount(totalCount); i
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setItems(items); )@]6=*%
setStartIndex(startIndex); d1V^2Hb?
} DD!MGf/
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publicList getItems(){ .Iwur;/\
return items; .?rbny
} _ }E-~I>
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publicvoid setItems(List items){ mDQEXMD
this.items = items; rGnI( m.
} [1b6#I"x
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publicint getPageSize(){ _F`$ d2
return pageSize; [ WV@ w
} +M'aWlPg,
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publicvoid setPageSize(int pageSize){ 1BQ0M{&
this.pageSize = pageSize; fvcW'T}r
} vi]r
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publicint getTotalCount(){ qzA`d
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return totalCount; C8IkpAD
} YV/>8*i
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publicvoid setTotalCount(int totalCount){ DW/1 =3
if(totalCount > 0){ b7B+eN ?z
this.totalCount = totalCount; :}y9$p
int count = totalCount / Ap5}5 ewM
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pageSize; ;n`R\NO9
if(totalCount % pageSize > 0) /?KtXV>]
count++; ;V_.[aX
indexes = newint[count]; B_{HkQ.PW
for(int i = 0; i < count; i++){ '|l%rv
indexes = pageSize * Bo`Tl1K#
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} ZgV~W#t
}else{ &v^!y=Bt
this.totalCount = 0; U|gpCy
} {<qF }i:V
} .L9']zXc`
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publicint[] getIndexes(){ B*\$
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return indexes; !FTNmyM~F
} w8O" =},
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publicvoid setIndexes(int[] indexes){ AXwaVLEBQ
this.indexes = indexes; *YWk1Cwjo
} 00ofHZ
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publicint getStartIndex(){ %.mEBI=hs
return startIndex; W'a(oI
} hd+]Ok7"
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publicvoid setStartIndex(int startIndex){ sI_7U^"[
if(totalCount <= 0) eGm:)
this.startIndex = 0; $
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elseif(startIndex >= totalCount) /;?M?o"H
this.startIndex = indexes Xka<I3UD5
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[indexes.length - 1]; a1Hz3y~S/
elseif(startIndex < 0) HcRa`Sfc]/
this.startIndex = 0; ]r4bRK[1
else{ qO-9
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this.startIndex = indexes /<);=&[
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[startIndex / pageSize]; y$X(S\W
} (n,u|}8Y
} vY6oVjM
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publicint getNextIndex(){ ,LDm8
int nextIndex = getStartIndex() + # 05jC6
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pageSize; )qL&%xz
if(nextIndex >= totalCount) qve
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return getStartIndex(); >ys[I0bo
else ! QM.P
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return nextIndex; j~;;l!({i
} hoa7
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publicint getPreviousIndex(){ UXT
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int previousIndex = getStartIndex() - ~C-,G"zw&G
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pageSize; 'Gx$Bj
if(previousIndex < 0) NYwR2oX
return0; !\FkG8
else +oI3I~
return previousIndex; F]UQuOR)
} %SrM|&[
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} #] CFA9z
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抽象业务类 :4:N f
java代码: u: &o}[
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/** ]PWDE"
* Created on 2005-7-12 ^Dg<Ki
*/ sV/l5]b]
package com.javaeye.common.business; >@_im6
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import java.io.Serializable; &$'z
import java.util.List; \8S~c8Z~
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import org.hibernate.Criteria; )[L^Dmd,
import org.hibernate.HibernateException; ).5RPAP
import org.hibernate.Session; D f4+^B,1
import org.hibernate.criterion.DetachedCriteria; 5!I4l1
import org.hibernate.criterion.Projections; J NVr
import lhH`dG D
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org.springframework.orm.hibernate3.HibernateCallback; k|vI<:'p,
import iDoDwq!l_
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org.springframework.orm.hibernate3.support.HibernateDaoS ?YQPlv:<o.
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upport; :XG;ru%i
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import com.javaeye.common.util.PaginationSupport; 26 I
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public abstract class AbstractManager extends JTU#vq:TY
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HibernateDaoSupport { #>[a{<;Kn
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privateboolean cacheQueries = false; xYfD()w<I
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privateString queryCacheRegion; JIm4vS
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publicvoid setCacheQueries(boolean >j*;vG5T
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cacheQueries){ 'G&{GVbXY
this.cacheQueries = cacheQueries; G7GZDi
} P>i%7:OMZA
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publicvoid setQueryCacheRegion(String ritBU:6
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