Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 $H*/;`,\[
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 UI?=]"
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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 c`kQvXx
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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 REA;x-u*
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分页支持类: wda';@y5(
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java代码: M-MKk:o
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package com.javaeye.common.util; Zb(t3I>n
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import java.util.List; Lj
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publicclass PaginationSupport { ^v:Z o
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publicfinalstaticint PAGESIZE = 30; E zT`,#b
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privateint pageSize = PAGESIZE; E1*QdCV2
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privateList items; n=!uNu7
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privateint totalCount; #oV+@D`
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privateint[] indexes = newint[0]; ,8VU&?`<}
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privateint startIndex = 0; v 1+U;Th>g
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public PaginationSupport(List items, int gH7z
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totalCount){ >l5u54^3K
setPageSize(PAGESIZE); I1=(. *B}
setTotalCount(totalCount); ;=~Xr"(/z
setItems(items); k1}hIAk3u
setStartIndex(0); 2<r\/-#pU
} 9- )qZ
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public PaginationSupport(List items, int 6"QEJ
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totalCount, int startIndex){ PCE4W^ns
setPageSize(PAGESIZE); OAe#Wf!c
setTotalCount(totalCount); LU2waq}VA
setItems(items); p3]Q^KFS
setStartIndex(startIndex); l-O$ m
} q=5l4|1
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public PaginationSupport(List items, int Qn+:/zA;
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totalCount, int pageSize, int startIndex){ K1q+~4>\|
setPageSize(pageSize); <$i4?)f(
setTotalCount(totalCount); < bUe/m
setItems(items); ,+1m`9}
setStartIndex(startIndex); X.#oEmA,P
} ;L"!I3dM)
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publicList getItems(){ &m'kI
return items; MC!ZX)mF
} UY>v"M
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publicvoid setItems(List items){ $g\&5sstE
this.items = items; QMp rv*i
} ]r/^9XaqtA
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publicint getPageSize(){ wij,N(,H
return pageSize; GjT#%GBF
} FN87^.^2S
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publicvoid setPageSize(int pageSize){ ^vni&sJ
this.pageSize = pageSize; wEEn?
} WFv!Pbq,
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publicint getTotalCount(){ +t!S'|C
return totalCount; 0kDBE3i#
} QU5Sy oL[
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publicvoid setTotalCount(int totalCount){ iEHh{H(
if(totalCount > 0){ ERz;H!pU8
this.totalCount = totalCount; (-^bj
int count = totalCount / gS9>N/b|
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pageSize; !iu5OX7K|
if(totalCount % pageSize > 0) |+f-h,
count++; P,z:Z|}8
indexes = newint[count]; VLvS$0(}Z
for(int i = 0; i < count; i++){ \
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indexes = pageSize * {6,|IGAq
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} ^twivNB
}else{ +wfVL|.Wq
this.totalCount = 0; /b[2lTC-e
} !{UTD+|=N
} *b|NjwmB
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publicint[] getIndexes(){ mOBACTY^
return indexes; TwahR:T
} D d $qQ
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publicvoid setIndexes(int[] indexes){ zF&=U`v
this.indexes = indexes; N|Cs=-+
} WlwY <)
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publicint getStartIndex(){ -1%OlKC
return startIndex; Lxe^v/LsT
} !!,0'c
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publicvoid setStartIndex(int startIndex){ \=e8%.#@J
if(totalCount <= 0) /bVZ::A&_
this.startIndex = 0; ;y>a
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elseif(startIndex >= totalCount) x4kWLy7Sz
this.startIndex = indexes /@oLe[Mz$
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[indexes.length - 1]; #bnb': f
elseif(startIndex < 0) b{Zpux+
this.startIndex = 0; b$JBL_U5Ch
else{ 3=.Y,ENM;
this.startIndex = indexes On_@HQ/FI
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[startIndex / pageSize]; ]N)DS+V/
} 't (O$
} kuMKX`_
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publicint getNextIndex(){ U.oksD9v
int nextIndex = getStartIndex() + _t>"5s&i
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pageSize; _^S]g mE
if(nextIndex >= totalCount) C"pB"^0
return getStartIndex(); v! hY
else zqySm)o]
return nextIndex; OM83S|1s
} _ -..~K.|
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publicint getPreviousIndex(){ -_A$DM!^=w
int previousIndex = getStartIndex() - \Ad7
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pageSize; >t+
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if(previousIndex < 0) ^>c8t_RG
return0; F`+\>ae$h
else S33j?+Vs
return previousIndex; ,[rPe\w.z
} e{w>%)rcP
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} Wr~yK? : ]
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抽象业务类 hwnJE958L
java代码: ~2*9{
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/** n> w`26MMp
* Created on 2005-7-12 Sb&lhgW]c
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package com.javaeye.common.business; ).412I
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import java.io.Serializable; oy.[+EI`|
import java.util.List; hUpnI@
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import org.hibernate.Criteria; `FF8ie 8L
import org.hibernate.HibernateException; D)b}f`
import org.hibernate.Session; s'HD{W`
import org.hibernate.criterion.DetachedCriteria; db72W
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import org.hibernate.criterion.Projections; ;@mRo`D`
import Sr Ca3PA
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org.springframework.orm.hibernate3.HibernateCallback; X"asfA[6K
import *A}WP_ZQ
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org.springframework.orm.hibernate3.support.HibernateDaoS wEft4o
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upport; :*i f
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import com.javaeye.common.util.PaginationSupport; f'En#-?O
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public abstract class AbstractManager extends <O~WB
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HibernateDaoSupport { yJx?M
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privateboolean cacheQueries = false; w|Cx>8P8@
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privateString queryCacheRegion; rVSZ.+n
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publicvoid setCacheQueries(boolean ]c)_&{:V
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cacheQueries){ pf" <!O[
this.cacheQueries = cacheQueries; T3%C%BcX
} k\)Cw
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publicvoid setQueryCacheRegion(String NaUr!s
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queryCacheRegion){ PgM (l3x
this.queryCacheRegion = 1eS_
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queryCacheRegion; _Q(g(p&
} G%lu28}D
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publicvoid save(finalObject entity){ E; Y;r"
getHibernateTemplate().save(entity); 62'1X"
} yl&UM
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publicvoid persist(finalObject entity){ l1=JrpCan
getHibernateTemplate().save(entity); d'
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} px''.8
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publicvoid update(finalObject entity){ 2{,n_w?Wy
getHibernateTemplate().update(entity); 9SQ4cv*2
} @p=AWi}\
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publicvoid delete(finalObject entity){ T(?HMyg3
getHibernateTemplate().delete(entity); bO5k6i
} yCz|{=7"j
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publicObject load(finalClass entity, RIn9(r
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finalSerializable id){ cgu~
return getHibernateTemplate().load h@{_duu
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(entity, id); e$)300 o
} 6X2PYJJZ
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publicObject get(finalClass entity, Y5q3T`xE
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finalSerializable id){ 0C%W&;r0
return getHibernateTemplate().get AV8T
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(entity, id); po9
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} Z)9g~g94
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publicList findAll(finalClass entity){ BP[|nL
return getHibernateTemplate().find("from ^ZDBO/
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" + entity.getName()); @F*wg
} fl\aqtF
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publicList findByNamedQuery(finalString 'J)2g"T@
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namedQuery){ e-hjC6Q U
return getHibernateTemplate a&{X!:X
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().findByNamedQuery(namedQuery); vl Ez9/H
} $!@\
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publicList findByNamedQuery(finalString query, U:6W+p8
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finalObject parameter){ RC#C\S6
return getHibernateTemplate NSAF4e
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().findByNamedQuery(query, parameter); |! SOG
} LA3<=R]
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publicList findByNamedQuery(finalString query, ?']h%'Q
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finalObject[] parameters){ =QJRMF
return getHibernateTemplate DaH Z{T8>d
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().findByNamedQuery(query, parameters); o KD/rI
} j9+I0>#X
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publicList find(finalString query){ :K82sCy%5
return getHibernateTemplate().find ^i)hm
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(query); U).*q?.z
} $*a'84-5G-
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publicList find(finalString query, finalObject DHC+C4
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parameter){ Mp$@`8X`
return getHibernateTemplate().find `p kMN
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(query, parameter); s^OO^%b
} n(nBRCG)o
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public PaginationSupport findPageByCriteria x]mxD|?f
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(final DetachedCriteria detachedCriteria){ y)c5u%(
return findPageByCriteria ^I
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); wu9=N
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} o'<^LYSnB
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public PaginationSupport findPageByCriteria y7i %W4
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(final DetachedCriteria detachedCriteria, finalint i JxQB\x
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startIndex){ g$:Xuw1
return findPageByCriteria Si9Z>MR
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(detachedCriteria, PaginationSupport.PAGESIZE, ]{~NO{0@Y
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startIndex); 'D1A}X
} V(MFna)
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public PaginationSupport findPageByCriteria kU-t7'?4
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(final DetachedCriteria detachedCriteria, finalint 9vNkZ-1
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pageSize, FOwDp0
finalint startIndex){ (R~]|?:wt
return(PaginationSupport) ajRSMcKb7i
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getHibernateTemplate().execute(new HibernateCallback(){ 7?gFy-
publicObject doInHibernate 3cS2gxF
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(Session session)throws HibernateException { )? M9|u
Criteria criteria = |sZ!
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detachedCriteria.getExecutableCriteria(session); t%zpNd2lk
int totalCount = ,h\s F#|
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((Integer) criteria.setProjection(Projections.rowCount h0oMTiA
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()).uniqueResult()).intValue(); C'=k<-
criteria.setProjection j6~nE'sQ
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(null); SjjIr ^
List items = *{undZ?(>
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criteria.setFirstResult(startIndex).setMaxResults ,
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(pageSize).list(); V~ ~=Qp+.
PaginationSupport ps = Ogt]_
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new PaginationSupport(items, totalCount, pageSize, 6J~12TU,
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startIndex); LIU}a5
return ps; ki0V8]HP
} MF60-VE
}, true); _mS!XF~`P
} 0U/K7sZ
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public List findAllByCriteria(final DcIvhB p
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DetachedCriteria detachedCriteria){ to8X=80-3
return(List) getHibernateTemplate JxLf?ad.
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().execute(new HibernateCallback(){ FG3UZVUg9
publicObject doInHibernate dw~p?[
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(Session session)throws HibernateException { w#JJXXQI
Criteria criteria = M'`;{^<
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detachedCriteria.getExecutableCriteria(session); [>#*B9
return criteria.list(); ,<