Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 YPNW%N!$|
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 S?C.:
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 =l${p*ABQ
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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 8e,F{>N
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分页支持类: J:&.[
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java代码: o^*:
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package com.javaeye.common.util; EJb+yy6
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import java.util.List; Ldv,(ZV,<
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publicclass PaginationSupport { r Dlu&
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publicfinalstaticint PAGESIZE = 30; Dc$q0|N=z
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privateint pageSize = PAGESIZE; eB1NM<V
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privateList items; {f)aFGp
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privateint totalCount; pUF JQ*
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privateint[] indexes = newint[0]; !t"/w6X1I
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privateint startIndex = 0; F~
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public PaginationSupport(List items, int zuW4gJ
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totalCount){ ,IqE<i!U
setPageSize(PAGESIZE); <PuY"-`/Oc
setTotalCount(totalCount); 4dCXBTT
setItems(items); A46q`l9B
setStartIndex(0); .S#i/A'x
} t,8?Tf+i
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public PaginationSupport(List items, int 9"+MZ$
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totalCount, int startIndex){ RMT9tXe*5
setPageSize(PAGESIZE); Tgtym"=xd
setTotalCount(totalCount); Y,Z$U| U
setItems(items); 5YNAb/!!F
setStartIndex(startIndex); #-G@ p
} Oy=0Hsh@x
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public PaginationSupport(List items, int ;w"h n*
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totalCount, int pageSize, int startIndex){ @S}j=k
setPageSize(pageSize); yx-"&K=`
setTotalCount(totalCount); H,w8+vZ4\
setItems(items); 6wwbH}*=?
setStartIndex(startIndex); 85Yi2+8f4
} L%5y@b{AR
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publicList getItems(){ *qSvSY*
return items; yGt[Qvx#
} h~Z &L2V
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publicvoid setItems(List items){ \ 9V_[xD+
this.items = items; ejkUNCKQt
} XA;PWl5!
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publicint getPageSize(){ K g#Bg##
return pageSize; ,"#nJC
} YQd($
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publicvoid setPageSize(int pageSize){ ]f&]E
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this.pageSize = pageSize; 4C_1wk('
} lrKT?siB
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publicint getTotalCount(){ O]hUOc`k
return totalCount; 'h6G"=+
} |&MoQxw@
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publicvoid setTotalCount(int totalCount){ t/O^7)%
if(totalCount > 0){ W[)HFh(#
this.totalCount = totalCount; ,#,K_oz
int count = totalCount / ,=Wj*S)~
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pageSize; F1$XUos9
if(totalCount % pageSize > 0) *lLCH,
count++; s,[I_IiPf
indexes = newint[count]; }#e=*8F7
for(int i = 0; i < count; i++){ CUpRtE8@[_
indexes = pageSize * Sft
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} Hn)?
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}else{ k CGb~+
this.totalCount = 0; R||$Rfe
} ]SU)L5Dt;
} iC iKr aW
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publicint[] getIndexes(){ {N{eOa<HA
return indexes; *.wj3'wV
} %{r3"Q=;W
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publicvoid setIndexes(int[] indexes){ [Fag\/Y+
this.indexes = indexes; X!z-J>
} `g1?Q4h
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publicint getStartIndex(){ v
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return startIndex; Q
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publicvoid setStartIndex(int startIndex){ }eZ\~2
if(totalCount <= 0) 4x+[?fw
this.startIndex = 0; R{A$|Ipaq
elseif(startIndex >= totalCount) 3*%+NQIj
this.startIndex = indexes ;t9_*)[
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[indexes.length - 1]; A~E S{Zkh
elseif(startIndex < 0) FPK=Tr:b
this.startIndex = 0; Q-R?y+| x
else{ p(GI02|n
this.startIndex = indexes ak:f4dEd
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[startIndex / pageSize]; ='kCY}dkO
} 7vPGb:y
} SbL7e#!!
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publicint getNextIndex(){ dVLrA`'P*
int nextIndex = getStartIndex() +
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pageSize; "Zn
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if(nextIndex >= totalCount) W4nn)qBrh
return getStartIndex(); INk|NEX
else /03Wst
return nextIndex; #H~$^L
} 0lq?l:/
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publicint getPreviousIndex(){ oIj/V|ByK
int previousIndex = getStartIndex() - ^z qQ8{oV
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pageSize; DTi^* Wj
if(previousIndex < 0) n?q+:P
return0; 8>vNa
else VpbJe@*D
return previousIndex; Q9p2.!/C1
} v1 ?G
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} $@dPIq4o;}
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抽象业务类 vZSwX@0
java代码: 3ZYrNul"
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/** -dUXd<=ue
* Created on 2005-7-12 8O*O5
*/ JCITIjD7=
package com.javaeye.common.business; ~^eC?F(
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import java.io.Serializable; *>j4tA{b@v
import java.util.List; 7q^a@5f BG
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import org.hibernate.Criteria; y;LZX-Z-
import org.hibernate.HibernateException; ~eGtoEY
import org.hibernate.Session; PF;`mdi-,
import org.hibernate.criterion.DetachedCriteria; <UJ5n) }"\
import org.hibernate.criterion.Projections; YccD^w[`B
import ?)+I'lW!
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org.springframework.orm.hibernate3.HibernateCallback; [-Mfgw]i
import #!M;4~Sfx
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org.springframework.orm.hibernate3.support.HibernateDaoS Ml,87fo
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upport; e&="5.ik
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import com.javaeye.common.util.PaginationSupport; )G9,5[
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public abstract class AbstractManager extends ljj}XJQ
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HibernateDaoSupport { j&=!F3[
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privateboolean cacheQueries = false; e_CgZ
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privateString queryCacheRegion; KZTT2KsYl
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publicvoid setCacheQueries(boolean \RyW#[(
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cacheQueries){ &r!*Y&
this.cacheQueries = cacheQueries; W-@}q}A
} ^T/d34A;SP
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publicvoid setQueryCacheRegion(String x AR9* <-
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queryCacheRegion){ @Vac!A??:
this.queryCacheRegion = '>5W`lZ
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queryCacheRegion; >`c-Fqk
} D[ (A`!)
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publicvoid save(finalObject entity){ '}NQ`\k
getHibernateTemplate().save(entity); (
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} 'uw=)8t7
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publicvoid persist(finalObject entity){ Mk@%Wuxg2
getHibernateTemplate().save(entity); $&iw (BIq
} BliL1"".
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publicvoid update(finalObject entity){ %$L!N-U6
getHibernateTemplate().update(entity); ^X/[x]UOT@
} 8(c,b
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publicvoid delete(finalObject entity){ =tE7XC3X_
getHibernateTemplate().delete(entity); 6{p]cr
} <Sx-Ca7
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publicObject load(finalClass entity, 8Yq_6
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