Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 K]&i9`>N
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 N$.=1Q$F6
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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 .cz7jD
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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 88VI
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分页支持类: Dxe]LES\]
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java代码: 1}~ZsrF
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package com.javaeye.common.util; >FS}{O2c
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import java.util.List; L]q%;u]8!
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publicclass PaginationSupport { hh[x(O)TC~
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publicfinalstaticint PAGESIZE = 30; B r6tgoA
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privateint pageSize = PAGESIZE; IEe;ygL#
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privateList items; a@-bw4SD
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privateint totalCount; ,<$rSvMfg
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privateint[] indexes = newint[0]; 6,!$S2(zT
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privateint startIndex = 0; )<$<9!L4x
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public PaginationSupport(List items, int Z&n#*rQ7[
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totalCount){ l=L(pS3 ~
setPageSize(PAGESIZE); V`rxjv}!
setTotalCount(totalCount); e?N3&ezp
setItems(items); Z4g<Ys*
setStartIndex(0); xwj{4fzpk{
}
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public PaginationSupport(List items, int iI;np+uYk
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totalCount, int startIndex){ _p?s[r*
setPageSize(PAGESIZE); y(O~=S+<
setTotalCount(totalCount); wScr:o+K>L
setItems(items); 89{`GKWX
setStartIndex(startIndex); yH9&HFDp
} e-nwR
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public PaginationSupport(List items, int @k\,XV`T~t
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totalCount, int pageSize, int startIndex){ 'wWuR@e#&
setPageSize(pageSize); hxt;sQAo{
setTotalCount(totalCount); q3`~uTzk
setItems(items); 8T8]g M
setStartIndex(startIndex); PAH#yM2Ic
} yyGn<
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publicList getItems(){ 7eW6$$ju,N
return items; Sbeq%Iwm.
} CdMV(
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publicvoid setItems(List items){ CF
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this.items = items; 30<_`
} >DN^',FEm
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publicint getPageSize(){ 4O:HT m
return pageSize; ,t!I%r
} m}f{o
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publicvoid setPageSize(int pageSize){ N36B*9m&p
this.pageSize = pageSize; 79I"F'
} NErvX/qK
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publicint getTotalCount(){ ?O"zp65d(
return totalCount; ~S$ex,~
} Ec^2tx"=
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publicvoid setTotalCount(int totalCount){ umt`0m. :
if(totalCount > 0){ ,(]k)ym/
this.totalCount = totalCount; .KtK<Ps[S
int count = totalCount / wL}X~Xa3i
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pageSize; ],vid1E
if(totalCount % pageSize > 0) 2`> (LH
count++; w ~^{V4V
indexes = newint[count]; H%Z;Yt8^gt
for(int i = 0; i < count; i++){ -:~z,F
indexes = pageSize * hLVgP&/E
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} ",' Zr<T
}else{ V;Q@'<w
this.totalCount = 0; Wys$#pJ
} #4!f/dWJp
} l<'}`
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publicint[] getIndexes(){ T!Lv%i*|Y
return indexes; %Aa_Bumf*:
} )6eFYt%c
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publicvoid setIndexes(int[] indexes){ ,Ek6X)|@
this.indexes = indexes; y<#Hq1
} AP8J28I
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publicint getStartIndex(){ 3>=G-AH/$K
return startIndex; C;#gy-
} +;Gvp=hk
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publicvoid setStartIndex(int startIndex){ 2wgcVQ
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if(totalCount <= 0) nA%8
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this.startIndex = 0;
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elseif(startIndex >= totalCount) F=f9##Y?7M
this.startIndex = indexes G^SDB!/@J
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[indexes.length - 1]; V8b^{}nxt
elseif(startIndex < 0) %o`Cp64`Q
this.startIndex = 0; {UF|-VaG
else{ 4{b/Nv:b
this.startIndex = indexes dEo r+5}
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[startIndex / pageSize]; NH1ak(zHW
} Tz7 R:S.
} wy:euKB~
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publicint getNextIndex(){ Fl"LK:)
int nextIndex = getStartIndex() + RLGIST`
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pageSize; .
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if(nextIndex >= totalCount) ~dLe9-_9
return getStartIndex(); Rn{X+b.
else akwS;|SZ
return nextIndex; J`wx72/-ZW
} (: mF+%(
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publicint getPreviousIndex(){ 8P&z@E{y
int previousIndex = getStartIndex() - )Rj?\ZUR
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pageSize; aDE}'d1qo
if(previousIndex < 0) 18y'#<X!
return0; |voZ0U
else lO}I>yo}\
return previousIndex; |8{\j*3
} 2 ,.8oa(
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} )1O|+m k
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抽象业务类 2F ~SH
java代码: ,rhNXx
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/** NF7+Gp6?q
* Created on 2005-7-12 $@[Mo
*/ R5<:3tk=X
package com.javaeye.common.business; |lVi* 4za%
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import java.io.Serializable; 8=mx5Gwz-
import java.util.List; Nm3CeU
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import org.hibernate.Criteria; 'tVe#oI
import org.hibernate.HibernateException; Wa%p+(\<uB
import org.hibernate.Session; X C'|
import org.hibernate.criterion.DetachedCriteria; <h`}I3Ao
import org.hibernate.criterion.Projections; =z}M(<G
import T`Xz*\}Zb
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org.springframework.orm.hibernate3.HibernateCallback; MnptC 1N
import yeV|j\TJI.
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org.springframework.orm.hibernate3.support.HibernateDaoS "}<baz
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upport; Lvn+EM
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import com.javaeye.common.util.PaginationSupport; #?bOAWAwLh
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public abstract class AbstractManager extends nB%[\LtZ?
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HibernateDaoSupport { =Unu>p}2V
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privateboolean cacheQueries = false; CW~c<,"
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privateString queryCacheRegion; t>"|~T$9
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publicvoid setCacheQueries(boolean qnw8#!%I
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cacheQueries){ 4o( Q+6m
this.cacheQueries = cacheQueries; +qyx3c+
} vz)zl2F5sY
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publicvoid setQueryCacheRegion(String #LG<o3An
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queryCacheRegion){ _(KzjOMt
this.queryCacheRegion = J8DKia|h(
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queryCacheRegion; @Sz7*p
} ,L8(Vo`-
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publicvoid save(finalObject entity){ vH]2t.\
getHibernateTemplate().save(entity); [uu<aRAg3O
} zB+zw\ncN
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publicvoid persist(finalObject entity){ YU1z\pK
getHibernateTemplate().save(entity); f7 zGz
} kfy|3KA3m
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publicvoid update(finalObject entity){ sH Hu<[psM
getHibernateTemplate().update(entity); vNAQ/Q
} MNKY J
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publicvoid delete(finalObject entity){ R"e53 3
getHibernateTemplate().delete(entity); ;x4yidb6
} Njs'v;-K
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publicObject load(finalClass entity, nsi&r
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finalSerializable id){ 6am<V]Hw0F
return getHibernateTemplate().load 2B]mD-~
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(entity, id); 4J2C#Cs
} Oa7jLz'i
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publicObject get(finalClass entity, HQrx9CXE
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finalSerializable id){ Qx77%L4
return getHibernateTemplate().get vi0nJ -Xg
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(entity, id); wmFS+F4`2
} FJ O-p
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publicList findAll(finalClass entity){ 2Xp?O+b#"O
return getHibernateTemplate().find("from A)D1
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" + entity.getName()); ?rgtbiSW-
} (e[8`C
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publicList findByNamedQuery(finalString ~a.ei^r
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namedQuery){ p}-B>v
return getHibernateTemplate -&r A<j
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().findByNamedQuery(namedQuery); +L#Q3}=s
} Bfr$&?j#
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publicList findByNamedQuery(finalString query, qbQH1<yS<
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finalObject parameter){ ]llvG\
return getHibernateTemplate jftf]n&Z(q
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().findByNamedQuery(query, parameter); }e&Z"H |
} .T^e8
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publicList findByNamedQuery(finalString query, q! }O+(kt
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finalObject[] parameters){ l\~F0Z/O
return getHibernateTemplate k54Vh=p
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().findByNamedQuery(query, parameters); :%"$8o*0W
} psE&Rx3)
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publicList find(finalString query){ UWq[K&vQZ
return getHibernateTemplate().find k>7 2W/L^
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(query); VeWvSIP,EQ
} PkxhR;4
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publicList find(finalString query, finalObject x<[W9Z'~?9
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parameter){ Y`
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return getHibernateTemplate().find x8E!Ko](
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(query, parameter); _9b;8%?Yf
} :/FT>UCL
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public PaginationSupport findPageByCriteria p*"H&xA@
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(final DetachedCriteria detachedCriteria){ [78^:q-/0
return findPageByCriteria d@_|
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