Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 :3JCvrq
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 t,RyeS/
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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 |<sf:#YzY&
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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 Z[Wlyb0
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分页支持类: @gNpJB]V
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java代码: K}
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package com.javaeye.common.util; )AOPiC$jL
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import java.util.List; >A3LA3(
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publicclass PaginationSupport { D/Rv&>Jh
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publicfinalstaticint PAGESIZE = 30; Zb]/nP1P
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privateint pageSize = PAGESIZE; 9hy'DcSy,
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privateList items; ;v_ls)_,-
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privateint totalCount; o~= iy
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privateint[] indexes = newint[0]; ~]&B>q
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privateint startIndex = 0; D}MoNE[r
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public PaginationSupport(List items, int /J;;|X#P
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totalCount){ 6#E7!-u(-
setPageSize(PAGESIZE); kfXS_\@iW1
setTotalCount(totalCount); aVP5%
setItems(items); ,(P %z.P@
setStartIndex(0); *%X.ym'
} T8U[xu.>
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public PaginationSupport(List items, int S/VA~,KCe;
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totalCount, int startIndex){ 4Q;<Q"
setPageSize(PAGESIZE); Lx%:t YZ
setTotalCount(totalCount); \7yJ\I
setItems(items); #pX8{Tf[
setStartIndex(startIndex); v; Es^
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} pajy#0 U
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public PaginationSupport(List items, int !3h{lEB
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totalCount, int pageSize, int startIndex){ *<r%aeG$em
setPageSize(pageSize); |CwG3&8
setTotalCount(totalCount);
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setItems(items); 7aQn;
setStartIndex(startIndex); 6GzzGP^
} :9`qogF>
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publicList getItems(){ Ir/:d]N*
return items; \#++s&06
} 3w6&&R9
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publicvoid setItems(List items){ *Rq`*D>:U}
this.items = items; +#~O'r]%GG
} dMJ!>l>2
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publicint getPageSize(){ Y''6NGf
return pageSize; a%E8(ms37y
} OF8WDo`
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publicvoid setPageSize(int pageSize){ LJWTSf"f?
this.pageSize = pageSize; _dr*`yXi
} 3za`>bUN
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publicint getTotalCount(){ i:d`{kJ|[
return totalCount; ,Aj }]h\L
} wu 2:'y>n
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publicvoid setTotalCount(int totalCount){ 1i3V!!r
if(totalCount > 0){ &hI>L
this.totalCount = totalCount; 333u]
int count = totalCount /
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pageSize; ^wJEfac
if(totalCount % pageSize > 0) )|RZa|`-G
count++; f&c]LH_
indexes = newint[count]; 6.'$EtH
for(int i = 0; i < count; i++){ j&CZ=?K^c
indexes = pageSize * WYLX?x
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} ,eXFN?CB
}else{ W`x)=y]Z
this.totalCount = 0; 1~@|eWr|
} )~}PgbZ^
} > rw"Rd'
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publicint[] getIndexes(){ ~C|,b"
return indexes; p+[}Hxx=
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publicvoid setIndexes(int[] indexes){ HN68!v}C|
this.indexes = indexes; cy3M^_5B<
} fK_~lGY(
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publicint getStartIndex(){ 6m+W#]^
return startIndex; [))JX"a
} lR@& Z6lw
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publicvoid setStartIndex(int startIndex){ !
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if(totalCount <= 0) H)5QqZ8
this.startIndex = 0; tpo>1|
elseif(startIndex >= totalCount) #ZWl=z5aBi
this.startIndex = indexes ]fE3s{y
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[indexes.length - 1]; y(v_-6b
elseif(startIndex < 0) -B9S}NPo
this.startIndex = 0; q-
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else{ yW("G-Nm
this.startIndex = indexes Pm^lr! 3p
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[startIndex / pageSize]; j#3m|dQ
} TQJF+;%
} }g{_AiP
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publicint getNextIndex(){ b_vTGl1_6
int nextIndex = getStartIndex() + 3dG4pl~
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pageSize; bS rZ{l
if(nextIndex >= totalCount) k[9A,N^lZB
return getStartIndex(); x=Mm6}/
else Wc|z7P~',%
return nextIndex; z0Xa_w=
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publicint getPreviousIndex(){ tpYa?ZCM
int previousIndex = getStartIndex() - eYEc^nC,c)
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pageSize; 4RQ5(YTTuR
if(previousIndex < 0) /{X_
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return0; ]:et~pfW
else k1fRj_@WPT
return previousIndex; !ZrB^?sO
} :JlDi>B
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抽象业务类 ]l[2hy=
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java代码: ?9e]
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/** IN^_BKQt
* Created on 2005-7-12 V@Wcb$mgk
*/ #DUh(:E'`
package com.javaeye.common.business; |C D}<r(N
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import java.io.Serializable; 4#:\?HAu!
import java.util.List; ~NNv>5t5
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import org.hibernate.Criteria; }-p,iTm
import org.hibernate.HibernateException;
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import org.hibernate.Session; @^?XaU
import org.hibernate.criterion.DetachedCriteria; $Ha%Gr
import org.hibernate.criterion.Projections; |Q!4GeQL[
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org.springframework.orm.hibernate3.HibernateCallback; 0x5xLg;Q
import 2[up+;%Y
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org.springframework.orm.hibernate3.support.HibernateDaoS 254~:eB0
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upport; a)9rs\Is{
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import com.javaeye.common.util.PaginationSupport; V`k8j-*s
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public abstract class AbstractManager extends s'L?;:)dyB
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HibernateDaoSupport { )(bxpW
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privateboolean cacheQueries = false; Y {c5
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privateString queryCacheRegion; bGv4.:)
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publicvoid setCacheQueries(boolean CLN+I'uX0
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cacheQueries){ `|<+ ?
this.cacheQueries = cacheQueries; (~()RkT
} Vk7=7%xW
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publicvoid setQueryCacheRegion(String .wc
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queryCacheRegion){ ;&?pd"^<_Z
this.queryCacheRegion = T=\!2gt
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queryCacheRegion; ?63&g{vA
} \##`pa(8
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publicvoid save(finalObject entity){ i&K