Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 #):FXB$a
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ^v,^.>P
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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 Di&tm1R1
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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 )'qZ6%
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分页支持类: rUj]6j=e
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java代码: L:S[QwQu8
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package com.javaeye.common.util; Ly^r8I
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import java.util.List; X&K1>dgWP
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publicclass PaginationSupport { ?&N
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publicfinalstaticint PAGESIZE = 30; xL mo?Y*
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privateint pageSize = PAGESIZE; 2"NJt9w
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privateList items; 3.8d"
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privateint totalCount; 2r1.,1
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privateint[] indexes = newint[0]; chxO*G
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privateint startIndex = 0; $oh}!Smt
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public PaginationSupport(List items, int D].1X0^hp
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totalCount){ _PJd1P.k
setPageSize(PAGESIZE); b,s T[!X[
setTotalCount(totalCount); %rYd=Ri
setItems(items); C EAwQH
setStartIndex(0); M[SWMVN{
} p0[
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public PaginationSupport(List items, int "/wZt c
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totalCount, int startIndex){ AuWEy-q?
setPageSize(PAGESIZE); p6|0JBm
setTotalCount(totalCount); mI}1si=$
setItems(items); b]@^SN9
setStartIndex(startIndex); INi(G-!g
} /-1[}h%U'
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public PaginationSupport(List items, int ^xFZ;Yf
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totalCount, int pageSize, int startIndex){ W*N^G p@
setPageSize(pageSize); =`u4xa#m
setTotalCount(totalCount); 06L/i,
setItems(items); ,|}Pof=]xk
setStartIndex(startIndex); &_G^=Nc,H
} 81`-xVd
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publicList getItems(){ A[^fG_l4
return items; ?9.SwIxU&
} KxqJlben
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publicvoid setItems(List items){ <w<&,xM
this.items = items; u m,Zt
} e0qU2
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publicint getPageSize(){ hj s[$,1
return pageSize; fpu^
} K8f;AK
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publicvoid setPageSize(int pageSize){ oF8#gn_
this.pageSize = pageSize; (@[c;+x
} SBZqO'}7
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publicint getTotalCount(){ ~}PB&`%7
return totalCount; CB:G4VqOT
} !-)Hog5\
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publicvoid setTotalCount(int totalCount){ -ich N/U]s
if(totalCount > 0){ gWL'Fl}H
this.totalCount = totalCount; $0=f9+@5
int count = totalCount / Z2!O)8
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pageSize; 9Eu.Y
if(totalCount % pageSize > 0) .Xqe]cax%
count++; F=bX\T7
indexes = newint[count]; *;5P65:u$>
for(int i = 0; i < count; i++){ XcD$xFDZ
indexes = pageSize * $GB/}$fd&
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} G&y< lh
}else{ tUaDwIu#
this.totalCount = 0; PS7ta?V
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} X mJu{RbS
} <xv@us7
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publicint[] getIndexes(){ &>,c..Ke
return indexes; Ahv %Q%m%2
} !#xk?L yB
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publicvoid setIndexes(int[] indexes){ P;GRk6
this.indexes = indexes; ER-X1fD
} 6R1}fdHvP
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publicint getStartIndex(){ xy;u"JY*
return startIndex; mO%F {'
} qy|[V
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publicvoid setStartIndex(int startIndex){ =Kqb
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if(totalCount <= 0) <#HQU<
this.startIndex = 0; :|%k*z
elseif(startIndex >= totalCount) %zsY=qT
this.startIndex = indexes @ A?Ss8p'
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[indexes.length - 1]; R+}7]tva6C
elseif(startIndex < 0) N/CL?Z>c
this.startIndex = 0; ny'?Hl'Q
else{ J'4Pp<
this.startIndex = indexes \k&2nYVHf
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[startIndex / pageSize]; )jc`_{PQg
} F/.nr
} s
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publicint getNextIndex(){ ]l/ PyX
int nextIndex = getStartIndex() + ^E-BB 6D
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pageSize; x)GpNkx:
if(nextIndex >= totalCount) xw2dNJL
return getStartIndex(); /h6K"w=='!
else U4s)3jDw
return nextIndex; cCa+UTxaJ
} }3HN$Fwo
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publicint getPreviousIndex(){ |YEq<wbQ
int previousIndex = getStartIndex() - xNAX)v3Z
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pageSize; rHngYcjR
if(previousIndex < 0) ?E +[
return0; Fw.df<
else mQd
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return previousIndex; z.Y`"B'j`
} {mO QRAKl
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抽象业务类 v=8sj{g3,3
java代码: HAKB@h)
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/** ?c ur}`
* Created on 2005-7-12 !a9`]c
*/ kD*r@s]=
package com.javaeye.common.business; .30eO_msK
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import java.io.Serializable; tXXnHEz
import java.util.List; ]Y;5U
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import org.hibernate.Criteria; $Sls9H+.
import org.hibernate.HibernateException; ;]vJ[mi~
import org.hibernate.Session; oU`{6 ~;
import org.hibernate.criterion.DetachedCriteria; 9Ib#A
import org.hibernate.criterion.Projections; `En>o~ L;
import y?Cq{(
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org.springframework.orm.hibernate3.HibernateCallback; ;X;q8J^_K_
import {J~VB~('
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org.springframework.orm.hibernate3.support.HibernateDaoS 8.WZC1N
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upport; u;G-46
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import com.javaeye.common.util.PaginationSupport; Fswr @du
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public abstract class AbstractManager extends ,II-:&H
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HibernateDaoSupport { i K,^|Q8
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privateboolean cacheQueries = false; r7FFZNs!
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privateString queryCacheRegion; c9O0YQ3&8
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publicvoid setCacheQueries(boolean 2'U+QK@
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cacheQueries){ @V =HY
this.cacheQueries = cacheQueries; R1?LB"aN
} HRg< f= oz
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publicvoid setQueryCacheRegion(String AFdBf6/"i
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queryCacheRegion){ B%(-UTQf
this.queryCacheRegion = 9f #6Q*/
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queryCacheRegion; eKvQS}11
} "30R%oL]=
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publicvoid save(finalObject entity){ 5H!6m_,w
getHibernateTemplate().save(entity); \Z8:^ct.P
} _Gtq]`y
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publicvoid persist(finalObject entity){ x5(B(V@b
getHibernateTemplate().save(entity); w%?6s 3
} g9G
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publicvoid update(finalObject entity){ M
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getHibernateTemplate().update(entity); D`
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} ,V`[;~49
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publicvoid delete(finalObject entity){ C^ 1;r9
getHibernateTemplate().delete(entity); <IwfiI3y
}
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publicObject load(finalClass entity, o2_mcJ
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finalSerializable id){ oi\e[qE
return getHibernateTemplate().load QHPC?a6CD
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(entity, id); Bhf4 /$
} ^GC 8^f
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publicObject get(finalClass entity, uePa4e!
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finalSerializable id){ a&C}'e"
return getHibernateTemplate().get ?TMrnR/d
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(entity, id); h
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} \(;X3h
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publicList findAll(finalClass entity){ EZ)$lw/!J
return getHibernateTemplate().find("from wq>0W4(
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" + entity.getName()); &Ef_p-e-P
} #G\;)pT
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publicList findByNamedQuery(finalString E3d# T
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namedQuery){ (0!U,8zz
return getHibernateTemplate L@x#:s=
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().findByNamedQuery(namedQuery); dS)c~:&+
} K!qV82b='{
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publicList findByNamedQuery(finalString query, n]a/nv
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finalObject parameter){ VjGtEIew
return getHibernateTemplate o06vC
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().findByNamedQuery(query, parameter); %dDwus
} ?X~U[dV?
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publicList findByNamedQuery(finalString query, p^X
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finalObject[] parameters){ W?2Z31;7
return getHibernateTemplate 'Ej&zh
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().findByNamedQuery(query, parameters); 5o2|QL
} ,%U'>F?
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publicList find(finalString query){ Xw]L'+V=
return getHibernateTemplate().find .TKKjS%8
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(query); +?y9EZB%
} yGX"1Fb?;x
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publicList find(finalString query, finalObject Y4,LXuQ
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parameter){ kdp- |9
return getHibernateTemplate().find +kZW:t!-
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(query, parameter); E;Q
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} b&xlT+GN
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public PaginationSupport findPageByCriteria K[M[0D
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(final DetachedCriteria detachedCriteria){ +/Qgl
return findPageByCriteria ?0hEd9TU
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); Mhiz{Td
} ~ -zch=+u
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public PaginationSupport findPageByCriteria x$;kA}gy
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(final DetachedCriteria detachedCriteria, finalint jyFXAs2
} 0x'm
startIndex){ !R"iV^?V
return findPageByCriteria (^;Fyf/
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(detachedCriteria, PaginationSupport.PAGESIZE, L>{p>
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startIndex); 2-x#|9
} 0pl |
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public PaginationSupport findPageByCriteria ~CQTPR
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(final DetachedCriteria detachedCriteria, finalint *\T
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pageSize, #azD&6`
finalint startIndex){ 2#t35fU
return(PaginationSupport) w//L2.
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getHibernateTemplate().execute(new HibernateCallback(){ iES?}K/q
publicObject doInHibernate iU9> qJ]
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(Session session)throws HibernateException { 0
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Criteria criteria = <