Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 xOdLct
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 |]tsf
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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 t9[%o=N~lD
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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 5~=wia
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分页支持类: /|,:'W%U
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java代码: `{'h+v`
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package com.javaeye.common.util; PvVn}i
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import java.util.List; `a]feAl
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publicclass PaginationSupport { :0(:}V3 z\
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publicfinalstaticint PAGESIZE = 30; h#]LXs
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privateint pageSize = PAGESIZE; >3)AO04=;
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privateList items; VpWpC&
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privateint totalCount; ./Wi(p{F
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privateint[] indexes = newint[0]; <k7q9"\4
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privateint startIndex = 0; *sq+ Vc(
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public PaginationSupport(List items, int vL~j6'
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totalCount){ Nj`Miv o
setPageSize(PAGESIZE); 8 qwOZ
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setTotalCount(totalCount); # 3gdT
setItems(items); [:cZDVaA|
setStartIndex(0); Oy~X@A
} l8By2{pN
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public PaginationSupport(List items, int 9H,Ec,.
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totalCount, int startIndex){ 0xpE+GY
setPageSize(PAGESIZE); s78V \Vw3
setTotalCount(totalCount); ?Fj>7
setItems(items); yNN_}9
setStartIndex(startIndex); Nj;G%KAP
} 7"$9js 2
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public PaginationSupport(List items, int ?8R
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totalCount, int pageSize, int startIndex){ LJmRa
setPageSize(pageSize); IC@-`S#F
setTotalCount(totalCount); >y^zagC*
setItems(items); ,v>|Ub,
setStartIndex(startIndex); :y(HOUB
} i T&Y9
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publicList getItems(){ 4dUr8]BkG
return items; 7g&<ZZo
} =B tmi
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publicvoid setItems(List items){ \%/zf
this.items = items; "uHU!)J#z
} -
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publicint getPageSize(){ HLp'^
return pageSize; pPtw(5bH
} -MT.qhx
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publicvoid setPageSize(int pageSize){ rdQ'#}Ix
this.pageSize = pageSize; ro*$OLc/
} ICB'?yZ,
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publicint getTotalCount(){ R|O."&CAB
return totalCount; L(i0d[F
} |4A938'4j
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publicvoid setTotalCount(int totalCount){ 34Z$a{
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if(totalCount > 0){ 0w<qj T^U
this.totalCount = totalCount; R7-+@
int count = totalCount / ^=gzms
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pageSize; p:q?8+W-r
if(totalCount % pageSize > 0) /E0/)@pDq
count++; E<
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indexes = newint[count]; cpg+-Zf%
for(int i = 0; i < count; i++){ sFWH*kdP?
indexes = pageSize * ;L.RfP"5<
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} (jB_uMuS
}else{ -Rz%<`
this.totalCount = 0; biw2f~V
} [n{c, U
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}
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publicint[] getIndexes(){ zQhc
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return indexes; q&N1| f7
} N
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publicvoid setIndexes(int[] indexes){ gm}[`GMU
this.indexes = indexes; &H<n76G
} 2or!v^^u
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publicint getStartIndex(){ bTN0 n
return startIndex; 1l*O;J9By
} q"sD>Yh&
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publicvoid setStartIndex(int startIndex){ 5EqC.g.
if(totalCount <= 0) Jg\1(ix
this.startIndex = 0; `tb@x ^
elseif(startIndex >= totalCount) !-gjA@Pk
this.startIndex = indexes 'z.:
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[indexes.length - 1]; 6EeK5XLf,
elseif(startIndex < 0) ek3,ss3
this.startIndex = 0; ^w*$qzESy
else{ Zc Y* TGx
this.startIndex = indexes 21\t2<"
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[startIndex / pageSize]; PC3-X['[
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} 5o dtYI%L
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publicint getNextIndex(){ jLLZZPBK
int nextIndex = getStartIndex() + Mm'q4DV^
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pageSize; f<T"# G$5
if(nextIndex >= totalCount) #MhieG5
return getStartIndex(); C)|{7W
else $6 A91|ZSQ
return nextIndex; c6 tB9b
}
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publicint getPreviousIndex(){ QTNE.n<?
int previousIndex = getStartIndex() - aC#8%Spj
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pageSize; 9:l@8^_o
if(previousIndex < 0) (2vf
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return0; lx!9KQAM*
else c[xH:$G?Y
return previousIndex; Ao/KB_4f*Q
} aAX(M=3
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} )K+Tvx3(m
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抽象业务类 a.5^zq7#!
java代码: 5yhfCe m|
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/** Ehv*E
* Created on 2005-7-12 eT|"6WJ:{
*/ XZk?aik}`
package com.javaeye.common.business; 6UkX?I`>
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import java.io.Serializable; \D]H>i$
import java.util.List; q ["T6
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import org.hibernate.Criteria; >,v,4,c
import org.hibernate.HibernateException; 3]iBX`Ni
import org.hibernate.Session; !PFc)J
import org.hibernate.criterion.DetachedCriteria; Ao:<aX,=
import org.hibernate.criterion.Projections; JlF$|y,gV,
import VZ:LK
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org.springframework.orm.hibernate3.HibernateCallback; fs=W(~"
import :]viLw\&g
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org.springframework.orm.hibernate3.support.HibernateDaoS #z*-
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upport; >J \} &!8,
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import com.javaeye.common.util.PaginationSupport; j/FFxlFNL
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public abstract class AbstractManager extends >c~Fgs
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HibernateDaoSupport { {y[T3(tt
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privateboolean cacheQueries = false; z8ox#+l
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privateString queryCacheRegion; 5DHFxym'
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publicvoid setCacheQueries(boolean nEZoF
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cacheQueries){ 2f8Cs$Opb
this.cacheQueries = cacheQueries; t/= xY'7
} ZS-O,[
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publicvoid setQueryCacheRegion(String "uz}`G~O
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queryCacheRegion){ Z"# /,?|3@
this.queryCacheRegion = 6+MZ39xC
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queryCacheRegion; o771q}?&`
} bGl5=`
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publicvoid save(finalObject entity){ 2xchjU-
getHibernateTemplate().save(entity); %D(%
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} LV:`siK
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publicvoid persist(finalObject entity){ QT5,_+ho
getHibernateTemplate().save(entity); K#B)@W?9
} \`|*i$
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publicvoid update(finalObject entity){ `g;`yJX<
getHibernateTemplate().update(entity); :\+;5Se+l
} Tn~b#-0
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publicvoid delete(finalObject entity){ Hd1e9Q,:|
getHibernateTemplate().delete(entity); ;t.LLd
} _$+lyea
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publicObject load(finalClass entity, FM c9oyU~
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finalSerializable id){ 2qb,bp1$
return getHibernateTemplate().load ;xnJ+$//U
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(entity, id); \X=?+|
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} 7>g^OE f
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publicObject get(finalClass entity, 1k5o?'3&
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finalSerializable id){ [jD.l;jF
return getHibernateTemplate().get Zhl}X!:c?\
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(entity, id); #6[7q6{4
} [dje!5Dc(
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publicList findAll(finalClass entity){ Mh04O@"
return getHibernateTemplate().find("from &></l| hY
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" + entity.getName()); n\Z&sc
} ]%yph3C
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publicList findByNamedQuery(finalString ,[To)x5o
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namedQuery){ \}0J%F1
return getHibernateTemplate L{K:XiPn
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().findByNamedQuery(namedQuery); \($EYhx
} ;%r#pv~
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publicList findByNamedQuery(finalString query, ?fB}9(6
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finalObject parameter){ <$WRc\}&g