Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 U7''; w
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 <naxpflom0
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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 99tUw'w
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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 4T]A!
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分页支持类: `mH]QjAO
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java代码: 6zi 5#23
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package com.javaeye.common.util; )5NWUuH 5
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import java.util.List; Z~w2m6;s
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publicclass PaginationSupport { gFd*\Dk
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publicfinalstaticint PAGESIZE = 30; DheQcM
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privateint pageSize = PAGESIZE; CZE!@1"<{
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privateList items; g^}C/~b[
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privateint totalCount; Cmp5or6d
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privateint[] indexes = newint[0]; ~{$c|
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privateint startIndex = 0; .C.b5x!
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public PaginationSupport(List items, int .4ZOm'ko{
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totalCount){ (I`lv=R"j
setPageSize(PAGESIZE); B<ncOe
setTotalCount(totalCount); :`4F0
setItems(items); vN:!{)~z
setStartIndex(0); 4JyA+OD4 {
}
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public PaginationSupport(List items, int ,!, tU7-H
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totalCount, int startIndex){ M.xZU\'ty
setPageSize(PAGESIZE); puLgc$?
setTotalCount(totalCount); t3!OqM
setItems(items); ]Ok'C"V(j
setStartIndex(startIndex); A;^ iy]"
} fC3T\@(&
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public PaginationSupport(List items, int SME9hS$4
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totalCount, int pageSize, int startIndex){ *o38f>aJl
setPageSize(pageSize); R(*t1R\
setTotalCount(totalCount); RO|8NC<oj
setItems(items); -Lq2K3JHyn
setStartIndex(startIndex); V1,/qd_
} rHM^_sYRb
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publicList getItems(){ ,q>cFsY=i?
return items; `GkCOx,
} a#{"3Z2|
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publicvoid setItems(List items){ :|$cG~'J
this.items = items; BU4IN$d0Po
} "GR*d{
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publicint getPageSize(){ "*t0
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return pageSize; j!y9E~Zz
} :p,|6~b$
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publicvoid setPageSize(int pageSize){ ;c>"gW8
this.pageSize = pageSize; .k-6LR
} j
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publicint getTotalCount(){ Y 9|!=T%
return totalCount; d:w/{m%#
} gS'7:UH,
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publicvoid setTotalCount(int totalCount){ wViTMlq
if(totalCount > 0){ [*Ai@:F
this.totalCount = totalCount; ?AD-n6
int count = totalCount / nGe4IY\-w
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pageSize; 4I$Y"|_e
if(totalCount % pageSize > 0) ;[UI]?A%
count++; e[?,'Mp9
indexes = newint[count]; :V5 Co!/+
for(int i = 0; i < count; i++){ BWQ`8
indexes = pageSize * SMIDW}U2S
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} 4sntSlz)~k
}else{ 7Mq{Py1
this.totalCount = 0; Il9xNVos#
} +uSp3gE"
} CQNMCYjg(R
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publicint[] getIndexes(){ Z5n-3h!+ED
return indexes; w|]Tt="
} Z$g'h1,zW
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publicvoid setIndexes(int[] indexes){ VBQAkl?(}4
this.indexes = indexes; l"(PP3
} Gp
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publicint getStartIndex(){ k(pJVez
return startIndex; fkp(M
} A$N%deb
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publicvoid setStartIndex(int startIndex){ >\^oCbqF}~
if(totalCount <= 0) Pj]^p{>
this.startIndex = 0; (3mL!1\
elseif(startIndex >= totalCount) M9A1
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this.startIndex = indexes zn 0y`9!n?
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[indexes.length - 1]; _AFje
elseif(startIndex < 0) =
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this.startIndex = 0; t6\H
else{ %hN>o)
this.startIndex = indexes kmC0.\
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[startIndex / pageSize]; 6WQN!H8+^
} z[1uub,)1
} :d9GkC
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publicint getNextIndex(){ yNXYS
int nextIndex = getStartIndex() + y>x"/jzF#
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pageSize; &gruYZGK
if(nextIndex >= totalCount) p\6}<b"p
return getStartIndex(); 2,q*8=?{6P
else oA[`|
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return nextIndex; :0Jn`Ds4o
} gJr)z7W'8
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publicint getPreviousIndex(){ n]Yz<#
int previousIndex = getStartIndex() - $(;Ts)P
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pageSize; "hI"4xSg
if(previousIndex < 0) K"XwSZ/
return0; 2<5LQr
else G gA:;f46
return previousIndex; X!LiekU!D
} 9ybR+dGm+
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} ;Us6:}s
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抽象业务类 0.wF2!V.
java代码: D((/fT)eD
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/** =23B9WT
* Created on 2005-7-12 zeQ~'ao<
*/ N*|EfI|X
package com.javaeye.common.business; Z0zEX?2mb
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import java.io.Serializable; JS8pN5
import java.util.List; ?>*d82yO
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import org.hibernate.Criteria; XchD3p+uB
import org.hibernate.HibernateException; D*~Q;q>
import org.hibernate.Session; fJ.=,9:<
import org.hibernate.criterion.DetachedCriteria; PSu]I?WF
import org.hibernate.criterion.Projections;
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import /<LjD
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org.springframework.orm.hibernate3.HibernateCallback; N?{Zrff2"O
import y'8T=PqY[t
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org.springframework.orm.hibernate3.support.HibernateDaoS > `eo 0
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upport; ag:<%\2c
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import com.javaeye.common.util.PaginationSupport; 9-m_
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public abstract class AbstractManager extends
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HibernateDaoSupport { C $])q`9
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privateboolean cacheQueries = false; [= E=H*j
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privateString queryCacheRegion; [7`S`\_NK
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publicvoid setCacheQueries(boolean uv$5MwKU
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cacheQueries){ |n,O!29
this.cacheQueries = cacheQueries; i=b'_SZ'
} "[["naa
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publicvoid setQueryCacheRegion(String B
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queryCacheRegion){ oSMIWwg7G
this.queryCacheRegion = F'{ T[MA
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queryCacheRegion; Uhh[le2 %
} ;_<
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publicvoid save(finalObject entity){ ,:}VbQ:3I
getHibernateTemplate().save(entity); MJe/ \
} cqh1,h$sG
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publicvoid persist(finalObject entity){ 8sDw:wTC
getHibernateTemplate().save(entity); :+_H%4+
} Z] cFbl\ma
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publicvoid update(finalObject entity){ b9.7j!W
getHibernateTemplate().update(entity); epk
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} 8[^b8^
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publicvoid delete(finalObject entity){ j
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getHibernateTemplate().delete(entity); _%rkN0-(a
} r
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publicObject load(finalClass entity, _pS)bxw
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finalSerializable id){ +BI%.A`2
return getHibernateTemplate().load 5 YIk
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(entity, id); |1OF!(:
} PR7bu%Y*eD
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publicObject get(finalClass entity, @&G
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finalSerializable id){ aFrZ
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return getHibernateTemplate().get %tkL<e
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(entity, id); JKYl
} R^I4_ZA
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publicList findAll(finalClass entity){ fk5pPm|MiL
return getHibernateTemplate().find("from 0[Zs8oRiI
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" + entity.getName()); ,`ehR6b
} QA!'p1{#
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publicList findByNamedQuery(finalString bq5?fPBrq
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namedQuery){ ,tFLx#e#
return getHibernateTemplate ir)~T0
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().findByNamedQuery(namedQuery); pi*?fUg!W
} F*B^#AZg
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publicList findByNamedQuery(finalString query, 8+_e= _3R
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finalObject parameter){ [QT
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return getHibernateTemplate UUgc>
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().findByNamedQuery(query, parameter); PTA_erU
} vN)l3
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publicList findByNamedQuery(finalString query, -Ze2]^#dl
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finalObject[] parameters){ +JFE\>O
return getHibernateTemplate $xj>j
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().findByNamedQuery(query, parameters); hKK"D:?PRs
} o:/ymeG
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publicList find(finalString query){ %LdFS~
return getHibernateTemplate().find yD&UH_ 1g
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(query); f'M7x6W
} QW@`4W0F
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publicList find(finalString query, finalObject @z.HyQ_v
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parameter){ ,#=;V"~9
return getHibernateTemplate().find 2`/p V0
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(query, parameter); 5./(n7d_
} Nf{tC9l
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public PaginationSupport findPageByCriteria }&*,!ES*
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(final DetachedCriteria detachedCriteria){ ?pF uV`Zm
return findPageByCriteria }W R?n
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); {W# VUB
} 9"k^:}8.
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public PaginationSupport findPageByCriteria +D+Rf,D
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(final DetachedCriteria detachedCriteria, finalint k<NEauQ
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startIndex){ /3v`2=b
return findPageByCriteria {f)"F;]V
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(detachedCriteria, PaginationSupport.PAGESIZE, 3LD`Ep
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startIndex); GSu&Z