Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 9z+ZFIf7d
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 _ZE&W
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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 G%>{Z?!B
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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 3b/J
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分页支持类: P1&Irwb`
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java代码: 9?uU%9r5P
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package com.javaeye.common.util; )O8w'4P5
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import java.util.List; 4'y@ne}g!
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publicclass PaginationSupport { 1]"S?
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publicfinalstaticint PAGESIZE = 30; T2 TWb
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privateint pageSize = PAGESIZE; zd=N.
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privateList items; ,L; y>::1
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privateint totalCount; ^@<Ia-x
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privateint[] indexes = newint[0]; nq\~`vH|Gd
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privateint startIndex = 0; MAD t$_
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public PaginationSupport(List items, int #e[igxwi
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totalCount){ QG5c>Q
setPageSize(PAGESIZE); Y8/&1s_
setTotalCount(totalCount); |N|[E5Cn
setItems(items); $PMD $c
setStartIndex(0); {( Ba
} ZeH=]G4Zv7
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public PaginationSupport(List items, int 6%&DJBU!
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totalCount, int startIndex){ "YN6o_*]
setPageSize(PAGESIZE); A",R2d
setTotalCount(totalCount); ]3
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setItems(items); GK{~n
setStartIndex(startIndex); :MGIp%3
} !3\(
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public PaginationSupport(List items, int k;HI-v
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totalCount, int pageSize, int startIndex){ *rC%nmJwk!
setPageSize(pageSize); *s?C\)x
setTotalCount(totalCount); bLO^5` 6
setItems(items); nbBox,zW
setStartIndex(startIndex); _3{8Zg
} '&Tz8.jp~
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publicList getItems(){ v"dl6%D"
return items; 5Z[HlN|-!
} @"afEMd
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publicvoid setItems(List items){ aL/7xa
this.items = items; d V3R)
} vH@b
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publicint getPageSize(){ SA~oGgk=P
return pageSize; C+0BV~7J<<
} Q.SqOHeJ
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publicvoid setPageSize(int pageSize){ 2 '8I/>-
this.pageSize = pageSize; sM9N Hwg
} fAD
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publicint getTotalCount(){ `LJ.NY pP
return totalCount; P]4@|u;=6[
} <\L=F8[
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publicvoid setTotalCount(int totalCount){ \ZC0bHsA
if(totalCount > 0){ >"D0vj
this.totalCount = totalCount; ;eP.B/N
int count = totalCount / sfC/Q"Zs
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pageSize; ^Fwdi#g
if(totalCount % pageSize > 0) xgWVxX^)
count++; D/tFN+|P
indexes = newint[count]; #$JY&!M
for(int i = 0; i < count; i++){ sl*&.F,v=
indexes = pageSize * 8VMD304
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} /+f3jy:d
}else{ B{NGrC`5)
this.totalCount = 0; qhNYQ/uS
} ;uqi
} O_Z
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publicint[] getIndexes(){ }M${ _D
return indexes; OZno 3Hn
} <#e!kWGR?
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publicvoid setIndexes(int[] indexes){ cnM`ywKW
this.indexes = indexes; s5oU
} ?I 7hbqQd
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publicint getStartIndex(){ -nk0Q_7N
return startIndex; j8ag}%
} "=*
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publicvoid setStartIndex(int startIndex){ n#)kvr
if(totalCount <= 0) f/g-b]0
this.startIndex = 0; Z|zT%8.8N
elseif(startIndex >= totalCount) }E\u2]
this.startIndex = indexes tN&X1
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[indexes.length - 1]; +JY]J89
elseif(startIndex < 0) o*s3"Ib
this.startIndex = 0; @%[
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else{ X&.LX
this.startIndex = indexes E7|P\^}m(f
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[startIndex / pageSize]; 7)y
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} yUu+68Z6
} &y.6Hiy&
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publicint getNextIndex(){ be~'}`>
int nextIndex = getStartIndex() + sQ%gf
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pageSize; 5w@Q %'o`I
if(nextIndex >= totalCount) @]B
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return getStartIndex(); 3H@29TrJ+
else Iih]q
return nextIndex; H?j!f$sw
} XB\n4|4
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publicint getPreviousIndex(){ `i3fC&?C
int previousIndex = getStartIndex() - IP l]$j>N
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pageSize; y7Y g$)sL
if(previousIndex < 0) O_y?5 3X
return0; ?K^~(D8(
else 73kL>u
return previousIndex; |iB
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} F9C3i
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} FK.Qj P:
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抽象业务类 A0 1D-)
java代码: UvM_~qo
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/** Z|qUVD5Ic
* Created on 2005-7-12 hXz@ (cF
*/ g\foBK:GE
package com.javaeye.common.business; mY,t]#^m7
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import java.io.Serializable; Ld3!2g2y7&
import java.util.List;
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import org.hibernate.Criteria; +2S#3m?1
import org.hibernate.HibernateException; qI#ow_lL#
import org.hibernate.Session; w0 0Ba^W
import org.hibernate.criterion.DetachedCriteria; UV8K$n<
import org.hibernate.criterion.Projections; B[nkE+s
import (YH/#n1"{
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org.springframework.orm.hibernate3.HibernateCallback; y<A%&
import E5F0C]hq
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org.springframework.orm.hibernate3.support.HibernateDaoS Y]>Qu f.!
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upport; !_SIq`5]@
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import com.javaeye.common.util.PaginationSupport; 7JHS8C<]
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public abstract class AbstractManager extends t?:Q
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HibernateDaoSupport { 7f\@3r
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privateboolean cacheQueries = false; *.ZU" 5e
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privateString queryCacheRegion; .&Ok53]b
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publicvoid setCacheQueries(boolean ^HasT4M+x
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cacheQueries){ pRLs*/Bw
this.cacheQueries = cacheQueries; 2?bE2^6
} 3JR1If
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publicvoid setQueryCacheRegion(String ' N?t=A
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queryCacheRegion){ Pqm)OZE?
this.queryCacheRegion = ?dcR!-3
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queryCacheRegion; bn$}U.m$-
} N2x!RYW
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publicvoid save(finalObject entity){ >)IXc<"wq
getHibernateTemplate().save(entity); ;y{VdT
} j2/3NF5&
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publicvoid persist(finalObject entity){ _7M! b9oA
getHibernateTemplate().save(entity); S=wJ{?gzAK
} K{s%h0
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publicvoid update(finalObject entity){ 1xkU;no
getHibernateTemplate().update(entity); Hw "UJP
} <15POB
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publicvoid delete(finalObject entity){ ;I+"MY7D
getHibernateTemplate().delete(entity); I:qfB2tL)O
} u8wZ2j4S
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publicObject load(finalClass entity, $.z~bmH"D
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finalSerializable id){ Gkr^uXNg#
return getHibernateTemplate().load B
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(entity, id); 4#qjRmt
} '3o0J\cz
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publicObject get(finalClass entity, ucj )t7O
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finalSerializable id){ O#7ldF(
return getHibernateTemplate().get 2t { Cpw
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(entity, id); 8m A6l0
} Vk_*]wU
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publicList findAll(finalClass entity){ H/V%DO
return getHibernateTemplate().find("from uz4mHyS6
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" + entity.getName()); q
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publicList findByNamedQuery(finalString Ut-6!kAm
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namedQuery){ *:.0c
return getHibernateTemplate i,")U)b
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().findByNamedQuery(namedQuery); Y%:p(f<
} lSyp
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publicList findByNamedQuery(finalString query, )C2d)(baEJ
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finalObject parameter){ ioi
return getHibernateTemplate 1MJ]Gh]5
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().findByNamedQuery(query, parameter); nu0bJ:0aLd
} (P#2Am$
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publicList findByNamedQuery(finalString query, >2syF{`j
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finalObject[] parameters){ 8
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return getHibernateTemplate >KY\Bx
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().findByNamedQuery(query, parameters); SA>;]6)`(
} eZHzo
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publicList find(finalString query){ 0K3FH&.%
return getHibernateTemplate().find ($(1KE
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(query); g&0GO:F`
} 4_.k Q"'DH
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publicList find(finalString query, finalObject ?XOeMI
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parameter){ j|G-9E
return getHibernateTemplate().find oZCi_g 5i
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(query, parameter); gy =`c MS@
} ` 4EOy:a
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public PaginationSupport findPageByCriteria !RcAJs'
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(final DetachedCriteria detachedCriteria){ y]jh*KD[
return findPageByCriteria Mz++SPG7
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); 3sZK[Y|ax
} f[}SS]d:E
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public PaginationSupport findPageByCriteria e4)gF*
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(final DetachedCriteria detachedCriteria, finalint aq5<Ks `r
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startIndex){ ygfqP
return findPageByCriteria &HXSO,@
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(detachedCriteria, PaginationSupport.PAGESIZE, *>'R
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startIndex); ;W+-x]O
} x b0+4w|
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public PaginationSupport findPageByCriteria b/K&8C,c
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(final DetachedCriteria detachedCriteria, finalint _@OYC<
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pageSize, m~U{ V9;*
finalint startIndex){ F>b6fUtR
return(PaginationSupport) Uqpvj90sw
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getHibernateTemplate().execute(new HibernateCallback(){ 654%X(:q
publicObject doInHibernate ppnj.tLz;r
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(Session session)throws HibernateException { KFs` u6
Criteria criteria = Q~@8t"P
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detachedCriteria.getExecutableCriteria(session); G2^DukK.
int totalCount = VDPN1+1*
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((Integer) criteria.setProjection(Projections.rowCount (;j7{(
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()).uniqueResult()).intValue(); hrL<jcv|
criteria.setProjection _N:h&uw
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(null); _[phs06A
List items = eLYFd,?9
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criteria.setFirstResult(startIndex).setMaxResults i@J,u
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(pageSize).list(); Vx*q'~4y!|
PaginationSupport ps = h^0mjdSp,
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new PaginationSupport(items, totalCount, pageSize, !qpu /
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startIndex); `l+SJLyJ%
return ps; J9 =gv0
} bvx:R ~E$
}, true); %pp+V1FH
} ~?&ijhZ
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public List findAllByCriteria(final w?tKL0c
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DetachedCriteria detachedCriteria){ X2uX+}h*tA
return(List) getHibernateTemplate
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().execute(new HibernateCallback(){ 19.cf3Dh
publicObject doInHibernate $;CC
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(Session session)throws HibernateException { ZH(.|NaH
Criteria criteria = 1;P\mff3Y
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detachedCriteria.getExecutableCriteria(session); WNb$2q=
return criteria.list(); RrHnDO'
} EDo@J2A
}, true); @(cS8%wK
} Xu_<4
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public int getCountByCriteria(final `"H?nf0
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DetachedCriteria detachedCriteria){ mvgm o
Integer count = (Integer) RF)B4D-W
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getHibernateTemplate().execute(new HibernateCallback(){ [j?<9
publicObject doInHibernate gHx-m2N
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(Session session)throws HibernateException { Wn^^Q5U#
Criteria criteria = L)}V[j#
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detachedCriteria.getExecutableCriteria(session); V</T$V$
return >u)ZT
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criteria.setProjection(Projections.rowCount )!d1<p3
s.sy7%{
()).uniqueResult(); 17cW8\
} 'u[o`31.
}, true); sPg6eAd~?
return count.intValue(); k^pu1g=6I
} >p*HXr|o$
} 42CMRGv
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