Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 D6Aa5&rO+
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 c1s&
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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 y$]<m+1
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 e1h7~ j
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分页支持类: J( XDwt
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java代码: M(K7xx+G
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package com.javaeye.common.util; *nJ,|T
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import java.util.List; >| ,`E
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publicclass PaginationSupport { k89N}MA
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publicfinalstaticint PAGESIZE = 30; }BI6dZ~2A
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privateint pageSize = PAGESIZE; ' *a}*(0OA
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privateList items; 'q$ Ym0nL
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privateint totalCount; 1~K'r&
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privateint[] indexes = newint[0]; ^O@eyP
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privateint startIndex = 0; v9Ii8{ca|
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public PaginationSupport(List items, int \zg R]|
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totalCount){ 6_QAE6A
setPageSize(PAGESIZE); 'vVWUK956
setTotalCount(totalCount); 5Ex[}y9L`
setItems(items); L+%kibnY'
setStartIndex(0); Os$E,4,py
} upaP,ik}~
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public PaginationSupport(List items, int Y0|){&PCt
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totalCount, int startIndex){ C/Z#NP~ *
setPageSize(PAGESIZE); ;BH.,{*@B
setTotalCount(totalCount); 99ZWB
setItems(items); :qbU@)p*
setStartIndex(startIndex); $RY-yKmi
} sU&v
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public PaginationSupport(List items, int ;6pB7N
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totalCount, int pageSize, int startIndex){ "Ux(nt
setPageSize(pageSize); r1-MO`6
setTotalCount(totalCount); 6}I X{nQI
setItems(items); \)t//0
setStartIndex(startIndex); d;l%XZe
} sGhw23
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publicList getItems(){ J(d+EjC
return items; 9MZ)-
} hDB(y4/
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publicvoid setItems(List items){ Sxc)~y
this.items = items; %\48hSe
} Fy<:iv0>t
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publicint getPageSize(){ WJONk_WAc
return pageSize; \h#aPG<yo
} W7uX
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publicvoid setPageSize(int pageSize){ BT8)t.+pv
this.pageSize = pageSize; :s_.K'4?a
} +&VY6(Zj+*
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publicint getTotalCount(){ }YdC[b$j^
return totalCount; vA_,TS#Bo
} mm+V*L{x
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publicvoid setTotalCount(int totalCount){ ynM~&]fk#k
if(totalCount > 0){ &t<gK
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this.totalCount = totalCount; ^uUA41o`eJ
int count = totalCount / }W:Z>vam+
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pageSize; ,hI$nF0}p
if(totalCount % pageSize > 0) vFdI?(c-
count++; Gn^lF7yE
indexes = newint[count]; @br)m](@
for(int i = 0; i < count; i++){ vb>F)po1}
indexes = pageSize * ,
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} `K+%/|!
}else{ su=MMr>
this.totalCount = 0; [06m{QJ)1
} Nkj$6(N=zJ
} U"8Hw@
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publicint[] getIndexes(){ 0~BaQ,
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return indexes; 7O*Sg2B
} ?sdSi--
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publicvoid setIndexes(int[] indexes){ fK=0?]s}I
this.indexes = indexes; 2c[HA
} :tO4LEb
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publicint getStartIndex(){ J i@q7qkC
return startIndex; ?:`sE"
} QObVJg,GD
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publicvoid setStartIndex(int startIndex){ G?Gf,{#K
if(totalCount <= 0) +8Q @R)3
this.startIndex = 0; Nm&'&L%Ch
elseif(startIndex >= totalCount) *cWHl@4
this.startIndex = indexes 7Ji'7$
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[indexes.length - 1]; a+lNXlh=
elseif(startIndex < 0) %$zak@3%'
this.startIndex = 0; |%5Aku0`s
else{ _ s}aF
this.startIndex = indexes )=}qAVO8
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[startIndex / pageSize]; }G{"Mp4
} `)8~/G%
} _GxC|d
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publicint getNextIndex(){ {'+{ASpO!
int nextIndex = getStartIndex() + `+< ^Svou
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pageSize;
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if(nextIndex >= totalCount) q%d'pF
return getStartIndex(); ?m~1b_@A{
else 9>-6Y
return nextIndex; u
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} g$e|y#Ic$
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publicint getPreviousIndex(){ hzqgsmT)
int previousIndex = getStartIndex() - m,kYE9{
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pageSize; Dom]w.W5
if(previousIndex < 0) ,\
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else _Cz98VqRk
return previousIndex; ~v\
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} zMp vS rc
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} /"`hz6rIv
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抽象业务类 Jf=V<
java代码: u8JH~b
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/** Kh=\YN\E<
* Created on 2005-7-12 {06-h %qr
*/ L
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package com.javaeye.common.business; P-T@'}lW
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import java.io.Serializable; |) ~-Wy
import java.util.List; aTm R~k
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import org.hibernate.Criteria; UZFs]z!,k
import org.hibernate.HibernateException; NGi)Lh|
import org.hibernate.Session; qY%|Uo
import org.hibernate.criterion.DetachedCriteria; |H5GWZ
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import org.hibernate.criterion.Projections; TtrO _D
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org.springframework.orm.hibernate3.HibernateCallback; ]pB5cq7o
import q,7W,<-
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org.springframework.orm.hibernate3.support.HibernateDaoS 1O0)+9T82
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upport; E7R%G OH
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import com.javaeye.common.util.PaginationSupport; Pw]+6
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public abstract class AbstractManager extends 2K/t[.8
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HibernateDaoSupport { .?APDr"QQH
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privateboolean cacheQueries = false; >3b<
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privateString queryCacheRegion; ~kV>nx2
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publicvoid setCacheQueries(boolean m#[c]v{
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cacheQueries){ B+Qo{-
this.cacheQueries = cacheQueries; !.# g
} ]vR
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publicvoid setQueryCacheRegion(String 32 j){[PL3
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queryCacheRegion){ F> Ika=z,
this.queryCacheRegion = 8VU(+%X
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queryCacheRegion; JDa_;bqL
} POl-S<QV
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publicvoid save(finalObject entity){ s=:LS
getHibernateTemplate().save(entity); OB=bRLd.IR
} ZR=i*y
@mu{*. &
publicvoid persist(finalObject entity){ %/\sn<6C}
getHibernateTemplate().save(entity); G2n.NW#d4
} C[TjcHoA
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publicvoid update(finalObject entity){ 7~1Fy{tc
getHibernateTemplate().update(entity);
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} nt&%
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publicvoid delete(finalObject entity){ yRQ1Szbjli
getHibernateTemplate().delete(entity); qh}+b^Wi
} =v?V
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publicObject load(finalClass entity, O+'k4
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finalSerializable id){ s+ *LVfau
return getHibernateTemplate().load mV"F<G; H
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(entity, id); 2\64~a^
} RFe>#o
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publicObject get(finalClass entity, 'Q]Wk75
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finalSerializable id){ &uaSp,L
return getHibernateTemplate().get l(3PxbT
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(entity, id); K0'p*[yO/j
} @$p6w
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publicList findAll(finalClass entity){ "IJ1b~j?
return getHibernateTemplate().find("from &l`_D?{<#
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" + entity.getName()); AGwdM-$iT
} Oel%lY}m3
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publicList findByNamedQuery(finalString 2Nm{.Y
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namedQuery){ ia.+<,
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return getHibernateTemplate YGyw^$.w
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().findByNamedQuery(namedQuery); 9"Dt3>Z
} 4Rp[>}L
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publicList findByNamedQuery(finalString query, B\=T_'E&
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finalObject parameter){ &432/=QSm0
return getHibernateTemplate 1z,P"?Q
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().findByNamedQuery(query, parameter); x>K,{{B)X
} F2(^OFh
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publicList findByNamedQuery(finalString query, h3\(660>$
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finalObject[] parameters){ y^X]q[-?
return getHibernateTemplate 5Em.sz;:8
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().findByNamedQuery(query, parameters); A2PeI"y
} ;u';$0
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publicList find(finalString query){ $K\;sn; |:
return getHibernateTemplate().find $S?xB$
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(query); 4/SltWU
} *ZRk)
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publicList find(finalString query, finalObject \\oa[nvL~
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parameter){ fpzEh}:H\
return getHibernateTemplate().find (YPG4:[
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(query, parameter); 51AA,"2[_
} KeyHxU=?
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public PaginationSupport findPageByCriteria "yU<X\ni
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(final DetachedCriteria detachedCriteria){ /bC@^Y&}
return findPageByCriteria ja{x}n*5
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); ZWB3R
} oq>jCOVh
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public PaginationSupport findPageByCriteria #H8QX5b)
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(final DetachedCriteria detachedCriteria, finalint JV2[jo}0N
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startIndex){ MpJ3*$Dr
return findPageByCriteria E%f!SD
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(detachedCriteria, PaginationSupport.PAGESIZE, C}o^p"M*B3
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startIndex); 0*uJS`se6Z
} ^zG!Z:E
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public PaginationSupport findPageByCriteria "zIQ(|TL?d
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(final DetachedCriteria detachedCriteria, finalint 6UPGE",u
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pageSize, --`W1!jI@
finalint startIndex){ $nf
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return(PaginationSupport) BMU#pK;P]
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getHibernateTemplate().execute(new HibernateCallback(){ jlD3SF~2
publicObject doInHibernate r)G)i;;~*
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(Session session)throws HibernateException { |Y+[_D}
Criteria criteria = [Fd[(
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detachedCriteria.getExecutableCriteria(session); ZmaW]3$
int totalCount = dTU`@!f
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((Integer) criteria.setProjection(Projections.rowCount lqoVfj'6M
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()).uniqueResult()).intValue(); Ojp|/yd^YL
criteria.setProjection {]y!2r
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(null); Ei@al>.\
List items = URyY^+s
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criteria.setFirstResult(startIndex).setMaxResults 8PRB_ny
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(pageSize).list(); B@vup {Kg
PaginationSupport ps = !ZN"(0#qz
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new PaginationSupport(items, totalCount, pageSize, 3"6-X_
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startIndex); Xpmi(~n
return ps; 4?x$O{D5?{
} &y2DI"Ff
}, true); x Sv@K5"8!
} UzkX;UA
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public List findAllByCriteria(final ?d)eri8,
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DetachedCriteria detachedCriteria){ ?)/H8n
return(List) getHibernateTemplate 4e|(= W`
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().execute(new HibernateCallback(){ yjChnp
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publicObject doInHibernate zhACNz4tJ
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(Session session)throws HibernateException { :\#/T,K"
Criteria criteria = ]=5D98B
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detachedCriteria.getExecutableCriteria(session); g\?7M1~
return criteria.list(); pH.&OW%
} I}/-zyx>=
}, true); Z&y9m@
} EMS$?"K
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public int getCountByCriteria(final kc"SUiy/
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DetachedCriteria detachedCriteria){ onUF@3V
Integer count = (Integer) ZOHGGO]1M
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getHibernateTemplate().execute(new HibernateCallback(){ }?%5Ae7l,
publicObject doInHibernate r1xhplHH@
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(Session session)throws HibernateException { 0hju@&