Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 v'Lckw@G4
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 hS<x+|'l
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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 +n%WmRf6!
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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 \7Zk[)!FL
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分页支持类: @dO~0dF
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java代码: HgG"9WBe%
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package com.javaeye.common.util; m#8mU,7
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import java.util.List; 3B;B#0g50
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publicclass PaginationSupport { Dwwh;B
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publicfinalstaticint PAGESIZE = 30; T#h`BtET[
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privateint pageSize = PAGESIZE; UG1^G07s
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privateList items; =1LrU$\
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privateint totalCount; ~Edm VEu
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privateint[] indexes = newint[0]; Rrk3EL
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privateint startIndex = 0; @'~v~3
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public PaginationSupport(List items, int {fk'g(E8([
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totalCount){ ]LNP"vi;
setPageSize(PAGESIZE); Tpkm\_
setTotalCount(totalCount); OSsdB%bIu`
setItems(items); ~FDJKGK
setStartIndex(0); Jf4D">h
} ar>S_VW*
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public PaginationSupport(List items, int Ns&SZO
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totalCount, int startIndex){ S,qsCnz
setPageSize(PAGESIZE); _[IN9ZC 2G
setTotalCount(totalCount); 6?(*:}Q
setItems(items); }&EPH}V2n
setStartIndex(startIndex); CA:t](xqQ
} }6ec2I%`o
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public PaginationSupport(List items, int J`V7FlM
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totalCount, int pageSize, int startIndex){ N(&,+KJ)
setPageSize(pageSize); }!5"EL(L80
setTotalCount(totalCount); o'r?^ *W
setItems(items); -*+7-9A I
setStartIndex(startIndex); mWCY%o@
} Q+Jzab
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publicList getItems(){ +>37'PD
return items; $Jx]
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} YV 2T$#7u
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publicvoid setItems(List items){ dsrzXmE0
this.items = items; BTGPP@p4
} M0 =K#/
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publicint getPageSize(){ k q_B5L ?
return pageSize; ,Cde5A{K
} _q+H>1.&9
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publicvoid setPageSize(int pageSize){ -hyY5!rD
this.pageSize = pageSize; M~p=OM<
} +-K-CXt
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publicint getTotalCount(){ oTT/;~ I
return totalCount; S'vrO}yU
} ->$Do$
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publicvoid setTotalCount(int totalCount){ 7s1FJm=Y/
if(totalCount > 0){ PzNk: O
this.totalCount = totalCount; @6(4}&sEdm
int count = totalCount / >o%.`)Ar
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pageSize; 45q-x_
if(totalCount % pageSize > 0) fPa FL}&
count++; Q4}2-}|
indexes = newint[count]; :anUr<
for(int i = 0; i < count; i++){ ixp(^>ZN
indexes = pageSize * YN.rj-;^+
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} 9<G-uF
}else{ &0+;E-_
this.totalCount = 0; M&:[3u-
} Ihw^g<X
} Yfs60f
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publicint[] getIndexes(){ S:+SZq
return indexes; }p]8'($
} fiES6VL
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publicvoid setIndexes(int[] indexes){ \l"1Io=
this.indexes = indexes; dzKI?i)x
} G?#f@N0.5p
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publicint getStartIndex(){ bb}|"m.
return startIndex; :l'61$=
} }L'BzSU@G
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publicvoid setStartIndex(int startIndex){ ofC=S$wX
if(totalCount <= 0)
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this.startIndex = 0; sy0|=E*;8"
elseif(startIndex >= totalCount) Fr`"XH
this.startIndex = indexes PsjSL8]
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[indexes.length - 1]; !c4pFQ B
elseif(startIndex < 0) -M/DOTc
this.startIndex = 0; DW\';"
else{ ~Uz,%zU#3
this.startIndex = indexes B>AmH%f/
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[startIndex / pageSize]; j(AN]g:
} "
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} ]p:s5Q
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publicint getNextIndex(){ F\^9=}b_i
int nextIndex = getStartIndex() + :D\M.A
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pageSize; q@1b{q#C5
if(nextIndex >= totalCount) rF'_YYpr>
return getStartIndex(); AvfSR p
else ,qz$6oxh\
return nextIndex; [AstD9
} =aX;-
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publicint getPreviousIndex(){ VJ8cls<
int previousIndex = getStartIndex() - lyc
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pageSize; Oi+9kk
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if(previousIndex < 0) dUegHBw_`R
return0; $ @QF<?i~
else ue"?n2
return previousIndex; 6q-X$
} o
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} ixm-wZI
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抽象业务类 GTgG0Ifeh
java代码: j?<>y/IR
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/** k]K][[s`
* Created on 2005-7-12 }#]2u|G
*/ kG 7]<^Os3
package com.javaeye.common.business; Osz:23(p
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import java.io.Serializable; 6b`3AAGU"
import java.util.List; ebsZ
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import org.hibernate.Criteria; ,/*L|M/&5
import org.hibernate.HibernateException; *i3\`;^=
import org.hibernate.Session; xvn@zi
import org.hibernate.criterion.DetachedCriteria; j]Y`L?!Q
import org.hibernate.criterion.Projections; 82d~>i%T
import pbc<326X"
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org.springframework.orm.hibernate3.HibernateCallback; !(2rU @.
import PggjuPPh
[[
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org.springframework.orm.hibernate3.support.HibernateDaoS t,H=;U#
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upport; G)5R
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import com.javaeye.common.util.PaginationSupport; LkvR]^u0
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public abstract class AbstractManager extends Dfz3\|LJ
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HibernateDaoSupport { eI99itDQ
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privateboolean cacheQueries = false; +8p4\l$<`
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privateString queryCacheRegion; f0!i<9<
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publicvoid setCacheQueries(boolean .: dy d
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cacheQueries){ P qUjBP\
this.cacheQueries = cacheQueries; 1V/?p<A
} Z@sDxYt9
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publicvoid setQueryCacheRegion(String pb8sx1.j;
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queryCacheRegion){ q)N]*~
this.queryCacheRegion = ~|CWy
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queryCacheRegion; *m$lAWB5D
} nLvF^%P8
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publicvoid save(finalObject entity){ ut/3?E1 Z
getHibernateTemplate().save(entity); Yf&P|Iiw
} kz30! L
};/;L[,G
publicvoid persist(finalObject entity){ k{Ad(S4J&
getHibernateTemplate().save(entity); H<N$z3k
} 9szUN;:ZZ
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publicvoid update(finalObject entity){ ,ICn]Pdz@
getHibernateTemplate().update(entity); 2?c##Izn
} ]:"<if gp$
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publicvoid delete(finalObject entity){ fGtYvl O-5
getHibernateTemplate().delete(entity); &AUtUp
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} M0) q
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publicObject load(finalClass entity, ,y>Sq +
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finalSerializable id){ r3;@
return getHibernateTemplate().load oeKVcVP|'&
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(entity, id); ?Sj>b
} :)*+aS"
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publicObject get(finalClass entity, HP,sNiw
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finalSerializable id){ F9}j iCom
return getHibernateTemplate().get `AcUxnO
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(entity, id); }w_r(g?\
} U\'HB.P\
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publicList findAll(finalClass entity){ nY)H-u^
return getHibernateTemplate().find("from 7$zeRYD+
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" + entity.getName()); <6rc8jYz
} s;!_'1pi@
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publicList findByNamedQuery(finalString ,%=SO 82W
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namedQuery){ d8!yV~Ka
return getHibernateTemplate y&&%%3
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().findByNamedQuery(namedQuery); u5Tu~
} T9'd?nw9
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publicList findByNamedQuery(finalString query, |O';$a1S
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finalObject parameter){ 3QF/{$65!
return getHibernateTemplate Ip_deP@
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().findByNamedQuery(query, parameter); I%<