Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 S0d~.ah30
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 _;1}x%4v
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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 ]:(W_qEA
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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 JL=U,Mr6
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分页支持类: *\}}Bv+9
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java代码: #KxbM-1=
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package com.javaeye.common.util; oA] KE"T
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import java.util.List; rxnFrx
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publicclass PaginationSupport { K5Q43e1
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publicfinalstaticint PAGESIZE = 30; ~{hxR)x9
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privateint pageSize = PAGESIZE; Vj<:GRNQ,d
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privateList items; {7u[1[L1
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privateint totalCount; 2H71~~ c
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privateint[] indexes = newint[0]; PZxAH9 S?
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privateint startIndex = 0; \B F*m"lz
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public PaginationSupport(List items, int T|J9cgtS
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totalCount){ j',W 64
setPageSize(PAGESIZE); P-F)%T[
setTotalCount(totalCount); |4$M]M f0
setItems(items); ;g{qYj_
setStartIndex(0); r/pH_@
} JB!:JML
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public PaginationSupport(List items, int ?
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totalCount, int startIndex){ DPi_O{W>
setPageSize(PAGESIZE); zvABU+{jD
setTotalCount(totalCount); F,
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setItems(items); A-:O`RK
setStartIndex(startIndex); 4iSa7YqhBT
} ; ^t{Il'j
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public PaginationSupport(List items, int )`^p%k
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totalCount, int pageSize, int startIndex){ I*9e]m"
setPageSize(pageSize); DNGvpKY@
setTotalCount(totalCount); 3u%{dG a
setItems(items); Ol4+_n8xj
setStartIndex(startIndex); hig2
} +`?Y?L^
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publicList getItems(){ y%
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return items; ^vG8#A}]
} 9 \^|6k,
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publicvoid setItems(List items){ MZmb`%BZ
this.items = items; oK 6(HF'&
}
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publicint getPageSize(){ bWOS `5
return pageSize; 6 uKTGc4
} Y@PI {;!
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publicvoid setPageSize(int pageSize){ bH"hX
this.pageSize = pageSize; r|,i'T
} 42]pYm(jk3
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publicint getTotalCount(){ y"Nsh>h
return totalCount; fGmT_C0t
} {rcnM7 S1L
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publicvoid setTotalCount(int totalCount){ c6Y\n%d&
if(totalCount > 0){ CKA;.sh
this.totalCount = totalCount; k}~O}~-
int count = totalCount / 7Pa@1']
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pageSize; t(="h6i
if(totalCount % pageSize > 0)
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count++; ,m,)I
indexes = newint[count]; L \;6y*K
for(int i = 0; i < count; i++){ EM\'GW
indexes = pageSize * OQ9x*TmK
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} wY"Q o7
}else{ SlT*C6f
this.totalCount = 0; B!aK
} F'J [y"~_
} BH :
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publicint[] getIndexes(){ OKwOugi0
return indexes; JE%A|R<Jl
} {`.O|_b
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publicvoid setIndexes(int[] indexes){ Sw!
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this.indexes = indexes; RSWcaATZN
} $T
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publicint getStartIndex(){ -Fwh3F4g
return startIndex; gAE!aKy
} |PM m?2^ R
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publicvoid setStartIndex(int startIndex){ oK-!(1A-
if(totalCount <= 0) 8@7AE"
this.startIndex = 0; <]#o*_aFP
elseif(startIndex >= totalCount) h-'wV${b
this.startIndex = indexes kG3!(?:
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[indexes.length - 1]; ]O@"\_}
elseif(startIndex < 0) 2bA#D%PHD
this.startIndex = 0; r<FQX3
else{ WV_`1hZX
this.startIndex = indexes X!0kK8v
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[startIndex / pageSize]; 2lz
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} BRtXf0~&p
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publicint getNextIndex(){ me'(lQ6^
int nextIndex = getStartIndex() + uZ[/%GTX{)
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pageSize; L[]^{ O
if(nextIndex >= totalCount) -lp"#^ ;
return getStartIndex(); ?Y!U*& 7
else rUFFF'm\*a
return nextIndex; Qu_EfmN|
} @W [{2d
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publicint getPreviousIndex(){ ] piM/v\
int previousIndex = getStartIndex() - RO(iHR3cA
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pageSize; >r:X~XnRUj
if(previousIndex < 0) 5byeWH0n3
return0; fIEw(k<*
else A5+5J_)*
return previousIndex; C*j9Iaj
} y1Z1=U*!
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} w@-b
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抽象业务类 4a 4N
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java代码: D@5s8xv
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/** Uir*%*4:
* Created on 2005-7-12 rV U:VL`2
*/ skK*OO2-
package com.javaeye.common.business; Y'&8L'2Z[
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import java.io.Serializable; @5GBuu^j
import java.util.List; 5R"2Wd
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import org.hibernate.Criteria; T(&kXMaB
import org.hibernate.HibernateException; 2J&XNV^tJ
import org.hibernate.Session; RCQAtBd
import org.hibernate.criterion.DetachedCriteria; !4pr{S
import org.hibernate.criterion.Projections; "]w!`^'_
import EM=xd~H
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org.springframework.orm.hibernate3.HibernateCallback; {Evcc+Eq
import {GK(fBE
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org.springframework.orm.hibernate3.support.HibernateDaoS
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upport; #>"}q3RO
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import com.javaeye.common.util.PaginationSupport; @~s~/[
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public abstract class AbstractManager extends "*+\KPCU
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HibernateDaoSupport { #n=A)#'my
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privateboolean cacheQueries = false; Q:pzL
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privateString queryCacheRegion; J"5jy$30'$
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publicvoid setCacheQueries(boolean Z@}sCZ=#A
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cacheQueries){ 2YE7 23H=Z
this.cacheQueries = cacheQueries; r)OO&. P@j
} B>sCP"/uV
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publicvoid setQueryCacheRegion(String VccM=w%*
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queryCacheRegion){ El'yiJ
this.queryCacheRegion = gxI&f
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queryCacheRegion; F%9cS
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} 5/tj
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publicvoid save(finalObject entity){ cES;bwQ
getHibernateTemplate().save(entity); %)8d{1at
} `b#/[3
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publicvoid persist(finalObject entity){ {%=S+89l
getHibernateTemplate().save(entity); kNRyOUy
} 1$);V,DK!
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publicvoid update(finalObject entity){ tp#Z@5=
getHibernateTemplate().update(entity); ^I@ey*$
} GXarUj s
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publicvoid delete(finalObject entity){ mr@_%U
getHibernateTemplate().delete(entity); 1a5?)D
} ^OsA+Ea\
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publicObject load(finalClass entity, c =jcvDQ6W
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finalSerializable id){ Km[]^;6
return getHibernateTemplate().load N
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(entity, id); +]A+!8%Z
} 's =Q.s
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publicObject get(finalClass entity, zA2UFax=
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finalSerializable id){ _u#/u2<
return getHibernateTemplate().get [Xs}FJ
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(entity, id); R'vdk<
} uOyLC<I/
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publicList findAll(finalClass entity){ @:S$|D~
return getHibernateTemplate().find("from CHQ{+?#
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" + entity.getName()); r$b:1 C~
} +#|'|}j
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publicList findByNamedQuery(finalString
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namedQuery){ 1gF*Mf_7
return getHibernateTemplate 1h#w"4
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().findByNamedQuery(namedQuery); ^JYF1
} +9<,3IJe6
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publicList findByNamedQuery(finalString query, B ]|5?QP-
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finalObject parameter){ ]3gYuz|
return getHibernateTemplate yC9:sQ'k
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().findByNamedQuery(query, parameter); 9`LU=Xv/
} '0\0SL
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publicList findByNamedQuery(finalString query, {q5hF5!`)
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finalObject[] parameters){ }M"-5K}
return getHibernateTemplate d&GK