Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 !6Sr*a*5
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 }H^h~E
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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 ]_!5g3VQh
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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 1:!_AU?
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分页支持类: -|0nZ
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java代码: b`a4SfbQS
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package com.javaeye.common.util; BC: d@
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import java.util.List; {)V!wSi
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publicclass PaginationSupport { <v&L90+s\;
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publicfinalstaticint PAGESIZE = 30; 52X[{
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privateint pageSize = PAGESIZE; &B1j,$NRc
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privateList items; 5&59IA%S
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privateint totalCount; LxdF;JCz:
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privateint[] indexes = newint[0]; yvIeK6
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privateint startIndex = 0; B* 0TM+
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public PaginationSupport(List items, int #mT\B[4h
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totalCount){ Pz\4#E]
setPageSize(PAGESIZE); (G1KMy
setTotalCount(totalCount); 8jBrD1
setItems(items); olm0O (9
setStartIndex(0); !4.VK-a9V%
} JM&`&fsOC{
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public PaginationSupport(List items, int A9 *P7
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totalCount, int startIndex){ >m:;.vVY
setPageSize(PAGESIZE); Nxm^jPM0
setTotalCount(totalCount); xDqJsp=]-
setItems(items); M `O=rH
}
setStartIndex(startIndex); qLjLfJJ2
} u-s*3Lg&
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public PaginationSupport(List items, int ys/U.e|)!
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totalCount, int pageSize, int startIndex){ 1U)U {i7j
setPageSize(pageSize); h(~@
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setTotalCount(totalCount); ;AH8/M B9
setItems(items); d/"%fpp^0G
setStartIndex(startIndex); XE#a#
} plNoI1st
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publicList getItems(){ MnLo{G]
return items; *x!j:/S`n
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publicvoid setItems(List items){ a!@(bb
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this.items = items; |
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} =I.uf
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publicint getPageSize(){ &0*7]Wo*
return pageSize; ]D.}
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publicvoid setPageSize(int pageSize){ :Bh7mF-1
this.pageSize = pageSize;
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} 7+NBcZuG9
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publicint getTotalCount(){ WJlJD*3
return totalCount; 7_9^nDU
} r@t
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publicvoid setTotalCount(int totalCount){ ' Ig:-
if(totalCount > 0){ C6JwJYa
this.totalCount = totalCount; -<6b[YA
int count = totalCount / m@i](1*T|
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pageSize; u<U8LR=)V5
if(totalCount % pageSize > 0) !#Pr'm/,mu
count++; {EjzJr>
indexes = newint[count]; SgWLs%B
for(int i = 0; i < count; i++){ x%yzhIRR
indexes = pageSize * ^:^
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} {_G_YL[
}else{ 5(>ux@[qI:
this.totalCount = 0; cd&sAK"
} 8kf5u#,'
} V8O-|7H$v
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publicint[] getIndexes(){ Bh UGMK
return indexes; 5yL\@7u`
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publicvoid setIndexes(int[] indexes){ *L&|4|BF2
this.indexes = indexes; lqcPV) n
} n v
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publicint getStartIndex(){ _<6E>"*m
return startIndex; `l'Ine11
} *x/H
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publicvoid setStartIndex(int startIndex){ R('\i/fy
if(totalCount <= 0) 'kSm}}y
this.startIndex = 0; s-4qK(ml-
elseif(startIndex >= totalCount) >l b9 j>
this.startIndex = indexes W%1/:_
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[indexes.length - 1]; l h?[wc
elseif(startIndex < 0)
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this.startIndex = 0; 5FVmk5z]d
else{ q:1n=iEi
this.startIndex = indexes pK"iTc#\X
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[startIndex / pageSize]; ro+8d
} uO( (Mg
} O!'gylj/
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publicint getNextIndex(){ BZa`:ah~x
int nextIndex = getStartIndex() + pwvmb\
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pageSize; x21XzGLY|}
if(nextIndex >= totalCount) GMY[Gd
return getStartIndex(); <Zo{D |hW
else n0FzDQt26
return nextIndex; ><C9PS@
} ;>%wf3e
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publicint getPreviousIndex(){ !y862oKD
int previousIndex = getStartIndex() - N[I ?x5:u
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pageSize; 9aYVbq""
if(previousIndex < 0) ck$>
return0; :7*9W|e
else H~?7:K
return previousIndex; BxiR0snf0q
} DFbhy
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} \.?'y71
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抽象业务类 v=daafO
java代码: ,=[r6k<
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/** PB) vE
* Created on 2005-7-12 E_0i9
*/ ~i]4~bkH2
package com.javaeye.common.business; sw50lId
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import java.io.Serializable; %NcBq3
import java.util.List; &srD7v9M8
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import org.hibernate.Criteria; ky'G/z
import org.hibernate.HibernateException; BO+to.
import org.hibernate.Session; S
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import org.hibernate.criterion.DetachedCriteria; TCK#bJ
import org.hibernate.criterion.Projections; {]iM5?
import zj$Ve
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org.springframework.orm.hibernate3.HibernateCallback; #@F
import RLO<5L
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org.springframework.orm.hibernate3.support.HibernateDaoS BnG{)\s
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import com.javaeye.common.util.PaginationSupport; )"g @"LJ=
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public abstract class AbstractManager extends U^Iq]L
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HibernateDaoSupport { sfp.> bMj
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privateboolean cacheQueries = false; Icx)+Mq
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privateString queryCacheRegion; "2:#bXM-
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publicvoid setCacheQueries(boolean E?jb?
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cacheQueries){ AgWG4C=
this.cacheQueries = cacheQueries; t'DIKug&
} }:\e"Bfv
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publicvoid setQueryCacheRegion(String =%{E^z>1
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queryCacheRegion){ =kw6<!R
this.queryCacheRegion = ;I>77gi`]
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queryCacheRegion; :eBp`dmn
} \wp8kSzC
} 7i}dyQv}
publicvoid save(finalObject entity){ k~]\kv=
getHibernateTemplate().save(entity); w69G6G(
} .p'\@@o5
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publicvoid persist(finalObject entity){ 7 .xejz
getHibernateTemplate().save(entity); ,%KMi-w]q,
} YVO~0bX:
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publicvoid update(finalObject entity){ !/Wv\qm
getHibernateTemplate().update(entity); CYNpbv
} ?xt${?KP
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publicvoid delete(finalObject entity){ G 'CYvV
getHibernateTemplate().delete(entity); %sS7o3RW\
} zU#
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publicObject load(finalClass entity, Ifj%" RI
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finalSerializable id){ |RI77b:pX
return getHibernateTemplate().load 7T?7KS
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(entity, id); X6oY-4O
} ?D]T|=EZY
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publicObject get(finalClass entity, !e0/1 j=
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finalSerializable id){ 7P DD
return getHibernateTemplate().get ^j'vM\^`ml
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(entity, id); [~ |e:
} gR{.0e
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publicList findAll(finalClass entity){ 7
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return getHibernateTemplate().find("from +e)RT<
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" + entity.getName()); LiD-su
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} (ZEDDV2
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publicList findByNamedQuery(finalString dUpOg{I.x
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namedQuery){ \8SHX
return getHibernateTemplate WR>2t&;E
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().findByNamedQuery(namedQuery); Vt
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} 'p(I!]"uo
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publicList findByNamedQuery(finalString query, #|{^k u
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finalObject parameter){ .:jfNp~jt
return getHibernateTemplate 5$f*fMd;
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().findByNamedQuery(query, parameter); D\V
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} N%`Eq@5
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publicList findByNamedQuery(finalString query, vM2\tL@"
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finalObject[] parameters){ \JEI+A PY*
return getHibernateTemplate Gex%~';+q
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().findByNamedQuery(query, parameters); ]6EXaf#
} 5>[j^g+@
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publicList find(finalString query){ AT,?dxP J
return getHibernateTemplate().find c95{Xy
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(query); [KjL`
} D`uOBEX
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publicList find(finalString query, finalObject &