Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 lRa
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 L&!g33J&
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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 &viwo}ls0
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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 uv~qK:Nw(
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分页支持类: &6,Yjs:T m
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java代码: n!l./>N
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package com.javaeye.common.util; 1Rb XM n
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import java.util.List; ]]h:#A2
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publicclass PaginationSupport { @^y?Bh9jQ
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publicfinalstaticint PAGESIZE = 30; He0N
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privateint pageSize = PAGESIZE; 7 BnenHD
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privateList items; Y?&DEKFbD
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privateint totalCount; sw=JUfAhy
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privateint[] indexes = newint[0]; ]@ Sc}
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privateint startIndex = 0; xZ S\#{
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public PaginationSupport(List items, int M0Kh>u
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totalCount){ 8XH |T^5
setPageSize(PAGESIZE); 8f{}ce'E*
setTotalCount(totalCount); tz0Ttu=xH
setItems(items); n ]6
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setStartIndex(0); wEHAkc)Q
} w
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public PaginationSupport(List items, int >XXMIz:
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totalCount, int startIndex){ Rvu3Qo+
setPageSize(PAGESIZE); ~J. Fl[
setTotalCount(totalCount); FVC2 XxP
setItems(items); <*r<+S
setStartIndex(startIndex); aaqd:N)
} O{i_?V_
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public PaginationSupport(List items, int bWQORjnd8
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totalCount, int pageSize, int startIndex){ _;J9q}X
setPageSize(pageSize); a7v[l04
setTotalCount(totalCount); lM|WOmD
setItems(items); QS=$#Gp
setStartIndex(startIndex); %.Tf u0M
} rs 1*H
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publicList getItems(){ R26tQbwE
return items; "$V 8y
} &x0TnW"g
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publicvoid setItems(List items){ _iboTcUF
this.items = items; |3<ehvKy
} uuUVE/^V'
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publicint getPageSize(){ WKrZTPD'm
return pageSize; Mly z><
} J?Ep Nie
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publicvoid setPageSize(int pageSize){ J6["j
this.pageSize = pageSize; wx"6",M
} CN$A-sjZ
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publicint getTotalCount(){ j]?0}Z*
return totalCount; );uZ4PNK/?
} 6U>jU[/
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publicvoid setTotalCount(int totalCount){ AINFua4 A
if(totalCount > 0){ @6!y(e8"J]
this.totalCount = totalCount; Qqhb]<z
int count = totalCount / H+#wj|,+\
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pageSize; wM4g1H%s
if(totalCount % pageSize > 0) \]`(xxt1
count++; Tx!m6B`Y
indexes = newint[count]; R.YGmT'2
for(int i = 0; i < count; i++){ ^<
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indexes = pageSize * >KClH'R2
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} ma-Y'
}else{ pTX'5
this.totalCount = 0; ZesD(
} >'|xQjLl
} /L|}Y242
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publicint[] getIndexes(){ 5WNg+
return indexes; vBn=bb'W
} SQKY;p
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publicvoid setIndexes(int[] indexes){ w%o4MFK=!
this.indexes = indexes; 8(_g] u#B;
} ;=9vmQA
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publicint getStartIndex(){ zl#&Qm4Ot
return startIndex; s^t1PfP(,
} &?g!}Ky \
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publicvoid setStartIndex(int startIndex){ &N7:k+E
if(totalCount <= 0) 3F'dT[;
this.startIndex = 0; x>9EVa)
elseif(startIndex >= totalCount) F.
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this.startIndex = indexes --%2=.X=
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[indexes.length - 1]; IM5^E#-g7
elseif(startIndex < 0) a=B0ytNm
this.startIndex = 0; 5NF&LM;i(
else{ qCkg\)Ks5I
this.startIndex = indexes DF[b?
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[startIndex / pageSize]; Jx9%8Ek
} vzm4
} E|4XQ|B@
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publicint getNextIndex(){ 5GFnfc}
int nextIndex = getStartIndex() + XK/@!ud"`
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pageSize; ,M h/3DPgE
if(nextIndex >= totalCount) O/^w!
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return getStartIndex(); -Us% g
else [<fLPa
return nextIndex; i |^`gly
} :lQjy@J
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publicint getPreviousIndex(){ WAa1H60VkS
int previousIndex = getStartIndex() - w@ylRq
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pageSize; U1|4vd9
if(previousIndex < 0) c^WBB$v
return0; %=<NqINM[
else ?jm2|:
return previousIndex; 8oH54bFp
} i8) :0
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} >(ww6vk2
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抽象业务类 8=o(nFJw
java代码: *Z2Q]?:{
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/** EF=D}"E6pO
* Created on 2005-7-12 :RO:k|g
*/ bNU^tL3QZ
package com.javaeye.common.business; ,UZE;lXJ'Q
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import java.io.Serializable; BXv)zE=j
import java.util.List; r8?Lr-;
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import org.hibernate.Criteria; eRy'N|'
import org.hibernate.HibernateException; GWZXRUc
import org.hibernate.Session; ^k<$N
import org.hibernate.criterion.DetachedCriteria; RWQW/Gwx
import org.hibernate.criterion.Projections;
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import QGj5\{E_
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org.springframework.orm.hibernate3.HibernateCallback; 5nq-b@?L
import UnF4RF:A2&
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org.springframework.orm.hibernate3.support.HibernateDaoS y"-{6{3
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upport; 3}1+"? s
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import com.javaeye.common.util.PaginationSupport; jeFl+K'1
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public abstract class AbstractManager extends BvR3Oi@Wc
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HibernateDaoSupport { qWRMwvN{
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privateboolean cacheQueries = false; 7Ej#7\TB]
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privateString queryCacheRegion; x2wWp-Z
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publicvoid setCacheQueries(boolean =xet+;~ji
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cacheQueries){ \)uad5`N
this.cacheQueries = cacheQueries; w|o@r%Q#l
} 1AV1W_"
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publicvoid setQueryCacheRegion(String r8>?-P
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queryCacheRegion){ 1H
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this.queryCacheRegion = kDa#yN\
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queryCacheRegion; B:.;:AEbT
} k $&A
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publicvoid save(finalObject entity){ |?=1tS{iT
getHibernateTemplate().save(entity); BVp.A]
} K3D $
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publicvoid persist(finalObject entity){ Jz0S2&
getHibernateTemplate().save(entity); tp2 _OQAQ
} X6'&X
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publicvoid update(finalObject entity){ 'Jr*oru
getHibernateTemplate().update(entity); !|c5@0Wr
} 2wsZ&y%
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publicvoid delete(finalObject entity){ 6Ymk8.PF
getHibernateTemplate().delete(entity); e'VXyf
} l'\b(3JF
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publicObject load(finalClass entity, :+!b8[?Z
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finalSerializable id){ L-$g& -
return getHibernateTemplate().load LXV6Ew5E
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(entity, id); FQ)Ekss~C
} oU? X"B9
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publicObject get(finalClass entity, W%cPX0
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finalSerializable id){ d6&tz!f
return getHibernateTemplate().get 9Wrclai
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(entity, id); GqxK|G1
} b;l%1x9r
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publicList findAll(finalClass entity){ iL1so+di
return getHibernateTemplate().find("from ,[#f}|s_
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" + entity.getName()); `BD`pa7.%
} 7SZs/wWh%
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publicList findByNamedQuery(finalString Y%@'a~
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namedQuery){ $7YLU{0
return getHibernateTemplate _Y {g5t
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().findByNamedQuery(namedQuery); gHshG;z*
} {Aw3Itef
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publicList findByNamedQuery(finalString query, nQ~L.V
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finalObject parameter){ .R5z>:A
return getHibernateTemplate }3lF;k(2g
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().findByNamedQuery(query, parameter); "O
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} f}eVfAf
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publicList findByNamedQuery(finalString query, Z5A<TC/:
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finalObject[] parameters){ .`XA6e(8KR
return getHibernateTemplate $@;[K\
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().findByNamedQuery(query, parameters); {*9i}w|2
} $*R9LPpk+
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publicList find(finalString query){
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return getHibernateTemplate().find yl%F<5
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(query); qW^l2Jff
} th,qq
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publicList find(finalString query, finalObject -X
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parameter){ oR)7 \;g
return getHibernateTemplate().find xd<68%Cn
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(query, parameter); YeJdkt
} p4 PFoFo2
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public PaginationSupport findPageByCriteria r%i{a
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(final DetachedCriteria detachedCriteria){ ~Y[1Me
return findPageByCriteria [:qX3"B
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); ?dYDfyFfB
} ntejFy9_
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public PaginationSupport findPageByCriteria tEj5WEnNE8
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(final DetachedCriteria detachedCriteria, finalint 7Wu2gky3
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startIndex){ \
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return findPageByCriteria uItKs u
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(detachedCriteria, PaginationSupport.PAGESIZE, J4i0+u
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startIndex); H@:@zD!G[
} ]\U'_G2]
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public PaginationSupport findPageByCriteria aXagiz\;
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(final DetachedCriteria detachedCriteria, finalint -j,o:ng0
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pageSize, I_rVeMw=
finalint startIndex){ VbYapPu4b!
return(PaginationSupport) _?"J.i
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getHibernateTemplate().execute(new HibernateCallback(){ XQA2uR4h
publicObject doInHibernate S EmD's
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(Session session)throws HibernateException { bOdD:=f
Criteria criteria = %O${EN
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detachedCriteria.getExecutableCriteria(session); 8TZe=sD~cr
int totalCount = g d -fJ._1
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((Integer) criteria.setProjection(Projections.rowCount ~cjvo?)&e;
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()).uniqueResult()).intValue(); rgCId@R
criteria.setProjection eMwf'*#
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(null); 7Fp2=j
List items = ,J~dER\%
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criteria.setFirstResult(startIndex).setMaxResults q,GL#L
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(pageSize).list(); OsXQWSkj~
PaginationSupport ps = va0
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new PaginationSupport(items, totalCount, pageSize, __M}50^
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startIndex); Syk^7l
return ps; R/W&~t
} q3:tZoeXV
}, true); !`gg$9
} ;g9+*$Gw
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public List findAllByCriteria(final bQ%^l#H_n'
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DetachedCriteria detachedCriteria){ `6/7},"9t
return(List) getHibernateTemplate
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