Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ?.69nN
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 :qK^71gz
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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 p-2PC{% t|
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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 SfGl*2
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分页支持类: /"7_75
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java代码: 4So
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package com.javaeye.common.util; eq7>-Dmi@
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import java.util.List; C{FE*@U.
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publicclass PaginationSupport { })5I/
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publicfinalstaticint PAGESIZE = 30; DM3 %+ xY
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privateint pageSize = PAGESIZE; xtX`3=s
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privateList items; URDXyAt
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privateint totalCount; h)sQ3B.}A
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privateint[] indexes = newint[0]; u=PYm+q{
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privateint startIndex = 0; ]}>uvl^l
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public PaginationSupport(List items, int :Wd@Qy?;
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totalCount){ <g{d>j
setPageSize(PAGESIZE); ;hJz'&UWQ
setTotalCount(totalCount); P] qL&_
setItems(items); nlR7V.
setStartIndex(0); NrWgaPO)i
} =4:]V\o):'
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public PaginationSupport(List items, int uN9J?j*ir
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totalCount, int startIndex){ :a'[4w
setPageSize(PAGESIZE); Ae_:Kc6
setTotalCount(totalCount); ExZ|_7^<
setItems(items); !9vq"J~hz"
setStartIndex(startIndex); C=<PYkt,L
} W&;,7T8@
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public PaginationSupport(List items, int +VRM:&
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totalCount, int pageSize, int startIndex){ T<K/bzB3z
setPageSize(pageSize); t-VU&.Y
setTotalCount(totalCount); whh#J
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setItems(items); @Avve8S
setStartIndex(startIndex); d3tr9B
} @$!rgLyL[
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publicList getItems(){ bDT@E,cSi
return items; y.Y;<UGu
} 3&KRG}5
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publicvoid setItems(List items){ yp"h$
this.items = items; _j}jh[M
} 7'idjcR
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publicint getPageSize(){ R 9b0D>Lxt
return pageSize;
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} ,<!v!~Iy
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publicvoid setPageSize(int pageSize){ (u-eL#@
this.pageSize = pageSize; ]lZg }7h
} l3HfaCP6:
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publicint getTotalCount(){ "-:-!1;Ji
return totalCount; vhKHiw9L
} cE+Y#jB
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publicvoid setTotalCount(int totalCount){ r!y3VmJ'm
if(totalCount > 0){ <7Ry"z6g;
this.totalCount = totalCount; B2l5}"{`
int count = totalCount / W*^_Ul|
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pageSize; Vi'zSR28Z
if(totalCount % pageSize > 0) Tga%-xr+
count++; %ZM"c
indexes = newint[count]; 1}ws@hU
for(int i = 0; i < count; i++){ -xL^UcG0
indexes = pageSize * |wGmu&fY
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} -SUK [<=X
}else{ aXh~w<5F
this.totalCount = 0; )8*}-z
} \"1%>O*
} @cu#rWiG
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publicint[] getIndexes(){ eNu]K,rT
return indexes; c)4L3W-x=
} ^"] ]rZ)
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publicvoid setIndexes(int[] indexes){ Fuy"JmeR
this.indexes = indexes; $nr=4'yZ
} vC!B}~RG
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publicint getStartIndex(){ _t?#
return startIndex; dry>TXG*
} "X \Yp_g
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publicvoid setStartIndex(int startIndex){ ,ut7`_Fy
if(totalCount <= 0) kc/"
this.startIndex = 0; \HQw$E/p
elseif(startIndex >= totalCount) B,U|V
this.startIndex = indexes 9Xh1i`.D
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[indexes.length - 1]; _f"KB=A_x
elseif(startIndex < 0) rVZl v3
this.startIndex = 0; tP4z#0r2
else{ 9xaieR
this.startIndex = indexes REWW(.3o
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[startIndex / pageSize]; Q#zU0K*^
} jr/IU=u*v
} "P
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publicint getNextIndex(){ 1xjWD30
int nextIndex = getStartIndex() +
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pageSize; ~-
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if(nextIndex >= totalCount) 5Zn: $?7
return getStartIndex(); <FfmDR
else 0( q:K6zI}
return nextIndex; )3.=)?XW
} [xo-ZDIoG
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publicint getPreviousIndex(){ ZC"a#rQ
int previousIndex = getStartIndex() - Q[)3r
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pageSize; ,0f^>3&n>e
if(previousIndex < 0) W/<Lp+p
return0; 9D]bCi\
else S4VM(~,o
return previousIndex; l'7'G$v
} ^ddC a
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} B*:W`}G]_c
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抽象业务类 Zs2;VW4RW
java代码: ]z8Th5a?o
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/** z}F^HQ1
* Created on 2005-7-12 2TgS
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*/ uAu'2M,_
package com.javaeye.common.business; 9r>iP L2H
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import java.io.Serializable; 3hcWR'|
import java.util.List; <[vsGUbc
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import org.hibernate.Criteria; 49=
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import org.hibernate.HibernateException; (t5vBUj
import org.hibernate.Session; EQ]>^VE2B
import org.hibernate.criterion.DetachedCriteria; j\iNag(
import org.hibernate.criterion.Projections; ySHpN>U
import ^O<@I
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org.springframework.orm.hibernate3.HibernateCallback; }=A+W2D
import eOahr:Db
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org.springframework.orm.hibernate3.support.HibernateDaoS Q-J} :U
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upport; 6Ev+!!znu
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import com.javaeye.common.util.PaginationSupport; V`@/"Dj j
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public abstract class AbstractManager extends x>+sqFd\
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HibernateDaoSupport { `yh][gqVE~
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privateboolean cacheQueries = false; 3gYtu-1
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privateString queryCacheRegion; 1n[wk'}qf4
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publicvoid setCacheQueries(boolean 5%+epzy
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cacheQueries){ Z/q'^PB
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this.cacheQueries = cacheQueries; yji>vJHu
} =3PZGdWD
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publicvoid setQueryCacheRegion(String 5a4i)I63o
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queryCacheRegion){ eQ,VK`7X
this.queryCacheRegion = Y.kc,~vYL
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queryCacheRegion; ` 5n^DP*X
} SeuDJxqopD
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publicvoid save(finalObject entity){ 58R.`5B
getHibernateTemplate().save(entity); m~4ik1wq
} 8( Q[A
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publicvoid persist(finalObject entity){ {\X$vaF
getHibernateTemplate().save(entity); TN<"X :x9
} 0^)~p{Zh
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publicvoid update(finalObject entity){ G?!8T91;
getHibernateTemplate().update(entity); *+(eH#_2/
} .g94|P
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publicvoid delete(finalObject entity){ S5r.so
getHibernateTemplate().delete(entity); [E/. r{S
} eN`G2eE
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publicObject load(finalClass entity, /#SH`ZK
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finalSerializable id){ {REGoe=W%
return getHibernateTemplate().load ED);2*qP}
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(entity, id); v^ v \6uEP
} j%}9tM6[
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publicObject get(finalClass entity, [zSt+K;
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finalSerializable id){ 2`A[<