Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 i[`nu#n/
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 c[}h( jkP
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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 ck>|p09q'9
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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 TS^(<+'
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分页支持类: ](a*R
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java代码: fQi7e5
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package com.javaeye.common.util; .\= GfF'
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import java.util.List; `e .;P
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publicclass PaginationSupport { ;ob-'
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publicfinalstaticint PAGESIZE = 30; w~y+Pv@
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privateint pageSize = PAGESIZE; 4j|]=58
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privateList items; >gM|:FG
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privateint totalCount; I gcVl/d
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privateint[] indexes = newint[0]; b)9bYkd
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privateint startIndex = 0;
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public PaginationSupport(List items, int A^
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totalCount){ #~*fZ|sq+3
setPageSize(PAGESIZE); ';us;xR#
setTotalCount(totalCount); I1^0RB{~
setItems(items); 3C 84b/A
setStartIndex(0); ${0+LhST
} k<wX ??'
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public PaginationSupport(List items, int 9#{?*c6
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totalCount, int startIndex){ NX&mEz
setPageSize(PAGESIZE); km,}7^?F0r
setTotalCount(totalCount); mV^+`GWvo
setItems(items); y5B4t6M(
setStartIndex(startIndex); v/=O:SM}
} jCqs^`-
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public PaginationSupport(List items, int 6DqV1'
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totalCount, int pageSize, int startIndex){ XFeHkU`C
setPageSize(pageSize); &:`T!n
setTotalCount(totalCount); L$6{{Tw"2
setItems(items); :$."x
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setStartIndex(startIndex); .>DqdtP[
} yz8ZY,9
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publicList getItems(){ ?VS (W
return items; c7X5sMM,
} b/cc\d <
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publicvoid setItems(List items){ `=0}+
this.items = items; Q!(16
} +!Q <gWb
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publicint getPageSize(){ [R*UPa
return pageSize; GqBZWmAB
} j:B?0~=
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publicvoid setPageSize(int pageSize){ /{
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this.pageSize = pageSize; uoR_/vol8
} &l2oyQEF)
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publicint getTotalCount(){ .P+om<~B
return totalCount; PCDsj_e
} <gRv7 ?V[z
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publicvoid setTotalCount(int totalCount){ wR
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if(totalCount > 0){ <o,]f E[
this.totalCount = totalCount; =u
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int count = totalCount / URS6
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pageSize; ce-5XqzY@
if(totalCount % pageSize > 0) "_t2R &A
count++; IoWh&(+KdH
indexes = newint[count]; `wz@l:e
for(int i = 0; i < count; i++){ kaf4GME]
indexes = pageSize * xU+c?OLi
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} >utm\!Gac
}else{ INqD(EG
this.totalCount = 0; KR4X&d6
} B|U*2|e
} k"X<gA
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publicint[] getIndexes(){ ew
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return indexes; Y1? wf.
} NF+^
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publicvoid setIndexes(int[] indexes){ vpu20?E>5z
this.indexes = indexes; FJJ+*3(
} U;f~ Q6iu
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publicint getStartIndex(){ 3p`*'j 2R
return startIndex; 7qj<|US
} F_0vh;Jo
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publicvoid setStartIndex(int startIndex){ e@N@8i"q5
if(totalCount <= 0) H:byCFN-
this.startIndex = 0; tmEF7e`(o
elseif(startIndex >= totalCount) 6S7 =+>
this.startIndex = indexes T pXbJ]o9
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[indexes.length - 1]; 1}nrVn[B9
elseif(startIndex < 0) ~k>H4hV3
this.startIndex = 0; ?IgM=@
else{
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this.startIndex = indexes vt)u`/u
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[startIndex / pageSize]; MNd8#01q`
} 2\Bt~;EIx
} bV c"'RQ
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publicint getNextIndex(){ !9w3/Gthj
int nextIndex = getStartIndex() + 8+'9K%'@qX
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pageSize; O6JH )Ka"S
if(nextIndex >= totalCount) Sh&n
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return getStartIndex(); 'MZX"t
else ~1e?9D
return nextIndex; h# R;'9*V
} j$v2_q
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publicint getPreviousIndex(){ \$; Q3t3
int previousIndex = getStartIndex() - @hC ,J
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pageSize; ^f][;>c
if(previousIndex < 0) kB~KC-&O
return0; S
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else ErZYPl
return previousIndex; 3%`asCW$
} +<qmVW^X
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} !<`}mE!:
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抽象业务类 NlLgXn!
java代码: )X-~+X91S
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/** 79}voDFd
* Created on 2005-7-12 4-ijuqjN
*/ ~:h-m\=8Y
package com.javaeye.common.business; W>jgsR79M
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import java.io.Serializable; %A 4F?/E
import java.util.List; U9N1)3/u
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import org.hibernate.Criteria; St9+/Md=jQ
import org.hibernate.HibernateException; `bXP
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import org.hibernate.Session; "Yh[-[,
import org.hibernate.criterion.DetachedCriteria; bD*z"e
import org.hibernate.criterion.Projections; TF0DQP
import w?u4-GT
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org.springframework.orm.hibernate3.HibernateCallback; mC-'z
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org.springframework.orm.hibernate3.support.HibernateDaoS bBwMx{iNNz
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upport; %~z/, [wk
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import com.javaeye.common.util.PaginationSupport; 'j6)5WL$
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public abstract class AbstractManager extends
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HibernateDaoSupport { gW0{s[}T
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privateboolean cacheQueries = false; (<.uvq61
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privateString queryCacheRegion; 3WH"NC-O<
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publicvoid setCacheQueries(boolean 4q<LNvJA
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cacheQueries){ <W$Ig@4[.d
this.cacheQueries = cacheQueries; %+>t @F,GM
} $x%3^{G
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publicvoid setQueryCacheRegion(String D4';QCwo
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queryCacheRegion){ u+U '|6)E
this.queryCacheRegion = h ~\bJ*Zp
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queryCacheRegion; ]t4 9Efw
} _1<zpHp
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publicvoid save(finalObject entity){ F0&BEJBkU
getHibernateTemplate().save(entity); RA5*QW
} RU r0K#]
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publicvoid persist(finalObject entity){ CBj&8#8Z
getHibernateTemplate().save(entity); 6Vq]AQx
} BK+(Uf;g
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publicvoid update(finalObject entity){ Muhq,>!U
getHibernateTemplate().update(entity); 627xR$U~
} sE,Q:@H5
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publicvoid delete(finalObject entity){ ]yR0"<W^xO
getHibernateTemplate().delete(entity); 'Dh+v3O
} N sUFM
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publicObject load(finalClass entity, @(;zU~l/
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finalSerializable id){ GQU9UXe
return getHibernateTemplate().load /.?m9O^
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(entity, id); k@,&'imx
} Y~R['u,
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publicObject get(finalClass entity, Jl,mYFEZ
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finalSerializable id){ YLEk
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return getHibernateTemplate().get `63?FzTy
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(entity, id); 6f$h1$$)^
} uTSTBI4t
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publicList findAll(finalClass entity){ <%@S-+D`]
return getHibernateTemplate().find("from ~-1!?t/%
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" + entity.getName()); z j[/~I
} kX\\t.nH
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publicList findByNamedQuery(finalString
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namedQuery){ i]qVT)j
return getHibernateTemplate upD2vtU
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().findByNamedQuery(namedQuery); ,$lOQ7R1(
} }w,^]fC:
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publicList findByNamedQuery(finalString query, 3jH8pO^
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finalObject parameter){ jK#[r[q{
return getHibernateTemplate ;bC163[
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().findByNamedQuery(query, parameter); 2 g)W-M
} s@WF[S7D
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publicList findByNamedQuery(finalString query, >o#5tNm
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finalObject[] parameters){ qac4GZ
return getHibernateTemplate FG?69b>
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().findByNamedQuery(query, parameters); JZCRu_M>|
} eyx;8v cM
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publicList find(finalString query){ h4j{44MT
return getHibernateTemplate().find &=seIc>x@
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(query); d[b(+sHp a
} FwdRM)1)
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publicList find(finalString query, finalObject O<@S,/Q4
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parameter){ %E!^SF?Y
return getHibernateTemplate().find tkN5|95
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(query, parameter); F?+K~['i
} w(sD}YA)
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public PaginationSupport findPageByCriteria Nb))_+/
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(final DetachedCriteria detachedCriteria){ ~S\Ee 2e>
return findPageByCriteria *?k~n9n5U
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); :/Zy=F9:
} X,zqI
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public PaginationSupport findPageByCriteria 2>E.Q@c
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(final DetachedCriteria detachedCriteria, finalint *3S./C}
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startIndex){ 7?@s.Sz|fV
return findPageByCriteria L_>j
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(detachedCriteria, PaginationSupport.PAGESIZE, .?gpIZv
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startIndex); ;P` z
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} De^GWO.?bT
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public PaginationSupport findPageByCriteria yq3i=RB(
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(final DetachedCriteria detachedCriteria, finalint vm3B>ACJ
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pageSize, MX=mGfoa
finalint startIndex){ |.A#wjF9
return(PaginationSupport) cU,]^/0Y
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getHibernateTemplate().execute(new HibernateCallback(){ E~=`Ac,G2
publicObject doInHibernate hFDY2Cp]D
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(Session session)throws HibernateException { sqAZjfy@
Criteria criteria = '.n0[2>
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detachedCriteria.getExecutableCriteria(session); p Rt=5WZ
int totalCount = rKlu+/G
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((Integer) criteria.setProjection(Projections.rowCount xt! DS0|*Y
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()).uniqueResult()).intValue(); &cty&(2p
criteria.setProjection -t92! O
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(null); 'USol<
List items = hOI|#(-
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