Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 LsQ8sFP_"
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 `h9)`*
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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 .!8X]trEg
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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 %SO%{.}Zf
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分页支持类: ERRT_G?
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java代码: 8{<[fZyC
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package com.javaeye.common.util; iQ{&&>V%
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import java.util.List; /4
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publicclass PaginationSupport { iqednk%
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publicfinalstaticint PAGESIZE = 30; bxdXZBn
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privateint pageSize = PAGESIZE; !ObE{2Enf
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privateList items; I>%S4Z+o
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privateint totalCount; d[]p_oIQq
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privateint[] indexes = newint[0]; \FoxKOTp
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privateint startIndex = 0;
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public PaginationSupport(List items, int >U~|R=*
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totalCount){ sVZZp
setPageSize(PAGESIZE); ljJz#+H2_
setTotalCount(totalCount); /"Yx@n
setItems(items); >GznG[Ku
setStartIndex(0); x1BOW
} GX@W"y
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public PaginationSupport(List items, int J,1osG<6x
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totalCount, int startIndex){ R@<_Hb;Aeb
setPageSize(PAGESIZE); 0/:=wn^pg
setTotalCount(totalCount); &oeN#5Es8C
setItems(items); II-$WJy
setStartIndex(startIndex); B8UZ9I$n
} inB PT~y
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public PaginationSupport(List items, int ]`@]<6
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totalCount, int pageSize, int startIndex){ r6n5 Jz
setPageSize(pageSize); %Nm @f'
setTotalCount(totalCount); >Qm<-g
setItems(items); R#/?AD&
setStartIndex(startIndex); e$Bf[F#;-
} G;Wkm|
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publicList getItems(){ EDHg'q
return items; )8$:DW;
} !eR-Kor
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publicvoid setItems(List items){ }(ma__Ao
this.items = items; Vm~qk
} /esVuz
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publicint getPageSize(){ om}/f`
return pageSize; skI(]BDf
} $7UoL,N>
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publicvoid setPageSize(int pageSize){ -SvTg{Q{la
this.pageSize = pageSize; R VkU+7
} ^`rpf\GX(
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publicint getTotalCount(){ \TbsoWX
return totalCount; +5HnZ?E\
} hV-VeKjZ(
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publicvoid setTotalCount(int totalCount){ T A\4uy6o
if(totalCount > 0){ K$G RJ
this.totalCount = totalCount; ^qeY9O
int count = totalCount / (T|TEt
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pageSize; c~^CKgr~R9
if(totalCount % pageSize > 0) j0iAU1~_VX
count++; |DE%SVZB
indexes = newint[count]; !/j,hO4Z4
for(int i = 0; i < count; i++){ w;
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indexes = pageSize * .hX0c"f]b
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} OJP5k/U$
}else{ <b d1
this.totalCount = 0; gB>imr#e&
} sno`=+|U]
} ~)q g
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publicint[] getIndexes(){ 'qL5$ zG
return indexes; !K3})& w
} OM.k?1%+M
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publicvoid setIndexes(int[] indexes){ o"p^/'ri
this.indexes = indexes; c,y|c`T 2
} %MJL5
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publicint getStartIndex(){ MA\m[h]
return startIndex; j8GY`f#
} E6Q]A~
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publicvoid setStartIndex(int startIndex){ T[;;9z
if(totalCount <= 0) SY-ez91
this.startIndex = 0; i;o}o*=
elseif(startIndex >= totalCount) I^~=,D
this.startIndex = indexes l|YT[LR7
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[indexes.length - 1]; .,3Zj /
elseif(startIndex < 0) ^rv"o:lF
this.startIndex = 0; z %x7fe
else{ &<,SV^wag
this.startIndex = indexes l~bKBz
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[startIndex / pageSize]; 6HoqEku/Q
} [X,A'Q
} AR%hf
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publicint getNextIndex(){ CjZZm^O
int nextIndex = getStartIndex() + ?Z q_9T7
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pageSize; i S%
if(nextIndex >= totalCount) bGv*-;*
return getStartIndex(); L#D9@V'z
else *q0`})IQ
return nextIndex; *'D=1{WZ!
} z[fB!O
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publicint getPreviousIndex(){ \6sqyWI
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int previousIndex = getStartIndex() - zZ%DtxUoU.
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pageSize; )^4hQ3BS
if(previousIndex < 0) ^q
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return0; FigR1/3o'6
else gQ37>
return previousIndex; 0rD#s{?
} mjb{~
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} 8j%'9vPi
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抽象业务类 ;7Y[c}V1^
java代码: ) Qq'Wp3i
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/** fb.J$fX
* Created on 2005-7-12 f/}
*/ UVz/n68\k7
package com.javaeye.common.business; 845
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import java.io.Serializable; |; $Bb866/
import java.util.List; J$F nm\
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import org.hibernate.Criteria; #^6^
import org.hibernate.HibernateException; 9R
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import org.hibernate.Session; )MZC>:
import org.hibernate.criterion.DetachedCriteria; !VwmPAMr#v
import org.hibernate.criterion.Projections; y4@gGC=
import $Pxb1E
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org.springframework.orm.hibernate3.HibernateCallback; t9FDU
import ?
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org.springframework.orm.hibernate3.support.HibernateDaoS a2`%ghW3
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upport; !9;)N,
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import com.javaeye.common.util.PaginationSupport; @x1%)1
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public abstract class AbstractManager extends -v]Qhf&>
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HibernateDaoSupport { s)zJT
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privateboolean cacheQueries = false; _;hf<|c
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privateString queryCacheRegion; TBCp
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publicvoid setCacheQueries(boolean prtK:eGe2
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cacheQueries){ A%u_&a}
this.cacheQueries = cacheQueries; m:uPEpcU
} +dk fcG
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publicvoid setQueryCacheRegion(String F; 8*H1
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queryCacheRegion){ $7Z)Yp&T
this.queryCacheRegion = ,zhJY ?sk
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queryCacheRegion; e_.Gw"/Yl
}
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publicvoid save(finalObject entity){ #(KDjnP[
getHibernateTemplate().save(entity); Ooc\1lX
} tIc 7:th
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publicvoid persist(finalObject entity){ `zA#z />
getHibernateTemplate().save(entity); VT\"q1)p
} ,
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publicvoid update(finalObject entity){ OcmRZ
getHibernateTemplate().update(entity); =dZHYO^Cv
} ***a2Z/(
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publicvoid delete(finalObject entity){ "l7NWqfB
getHibernateTemplate().delete(entity); ;f1qLI
} /vxm"CJR
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publicObject load(finalClass entity, ml6u1+v5
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finalSerializable id){ SmhGZ
return getHibernateTemplate().load I9?Ec6a_
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(entity, id); /( hUfYm0
} iEm ?
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publicObject get(finalClass entity, IgIYguQ
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finalSerializable id){ PLX>-7@
return getHibernateTemplate().get ,WDX(
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(entity, id); H,QTYXi "
} d\]Yk]r
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publicList findAll(finalClass entity){ o`n$b(VZ
return getHibernateTemplate().find("from EON:B>2a
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" + entity.getName()); k&