Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 :V`q;g
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 z]tvy).
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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 .NZ_dz$c
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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 (xq25;|Y
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分页支持类: ([s2F%S`@
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java代码: lxV>
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package com.javaeye.common.util; cJL>,Z<|%
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import java.util.List; yh} V u
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publicclass PaginationSupport { [S'ngQ"f`
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publicfinalstaticint PAGESIZE = 30; $YFn$.70\
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privateint pageSize = PAGESIZE; /SSl$
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privateList items; u2o6EU`
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privateint totalCount; tXwnK[~x
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privateint[] indexes = newint[0]; vcqL
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privateint startIndex = 0; 'Ko
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public PaginationSupport(List items, int c!E+&5|n
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totalCount){ _epi[zf@
setPageSize(PAGESIZE); ^+!!:J|ra
setTotalCount(totalCount); ^?w6
setItems(items); dfO84Z}
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setStartIndex(0); b1E>LrL
} J$@3,=L6V
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public PaginationSupport(List items, int 3<#4
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totalCount, int startIndex){ H"].G^V\6
setPageSize(PAGESIZE); kznmA`#jn
setTotalCount(totalCount); Tj@s \@hv
setItems(items); B!yAam#^
setStartIndex(startIndex); NkA|T1w7
} n*hHqZl
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public PaginationSupport(List items, int 7l%O:M(\
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totalCount, int pageSize, int startIndex){ `+{|k)2B
setPageSize(pageSize); u0Irf"Ab
setTotalCount(totalCount); ^0c:ro
setItems(items); "=N[g
setStartIndex(startIndex); 5 o'V}
}
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publicList getItems(){ ['e8Xz0
return items; e%u1O-*
} WR%x4\,d#
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publicvoid setItems(List items){ fMP$o3;
this.items = items; Z<;am
} BbnY9"
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publicint getPageSize(){ <Pg4>
return pageSize; #'_i6
} R=_
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publicvoid setPageSize(int pageSize){ *&^`Uk,[
this.pageSize = pageSize; lL/|{A|-j
} P0Z1cN}
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publicint getTotalCount(){ mtOCk 5E
return totalCount; E0o=
} z%<Z#5_N
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publicvoid setTotalCount(int totalCount){ 2<y!3OeN
if(totalCount > 0){ ]KBzuz%
this.totalCount = totalCount; (ylpH`
int count = totalCount / )u7y.o
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pageSize; dX^OV$
if(totalCount % pageSize > 0) ^`!5!|
count++; 6p=AzojoB
indexes = newint[count]; b<u
for(int i = 0; i < count; i++){ VK5|w:
indexes = pageSize * 9|jk=`4UK
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} 3){ /u$iH.
}else{ Xb@lKX5Re
this.totalCount = 0; "u@)
} 82O#Fe q
} /=).)<&|R
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publicint[] getIndexes(){ G];5'd~C;d
return indexes; 7Y"CeU-S
} 2^'|[*$k1@
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publicvoid setIndexes(int[] indexes){ eZ'J,;
this.indexes = indexes; s,!+wHv_8
} ?ey!wcv~
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publicint getStartIndex(){ +]
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return startIndex; hN=YC\l
} QVA)&k'T,
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publicvoid setStartIndex(int startIndex){ 38ChS.(
if(totalCount <= 0) %9cu(yc*}
this.startIndex = 0; 8q58H[/c
elseif(startIndex >= totalCount) Oc8]A=M12
this.startIndex = indexes r+r-[z D(
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[indexes.length - 1]; EZlcpCS
elseif(startIndex < 0) )u ) ]#z
this.startIndex = 0; e@}zp
else{ ~M7
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this.startIndex = indexes ?=}~]A5N
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[startIndex / pageSize]; ~<!b}Hv
} 5Arx"=c
} \3a(8Em
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publicint getNextIndex(){ U{6i5;F#H
int nextIndex = getStartIndex() + aZ"9)RJe
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pageSize; ~?T*D*
if(nextIndex >= totalCount) #z$FxZT<b
return getStartIndex(); +0lvQVdp}
else x =7hOI5u
return nextIndex; >*r H Nf
} [}-CXB
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publicint getPreviousIndex(){ !#s1'x{o
int previousIndex = getStartIndex() - iU]py
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pageSize; G$FNofQx
if(previousIndex < 0) i]oSVXx4WC
return0; QbA+\
else )xwWig.
return previousIndex; HMDQEd;
} 7v\K,P8
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} YbjeM6#E
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抽象业务类 4|i.b?"
java代码: 0`y;[qAG[
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/** B^`'2$3
* Created on 2005-7-12 jF4h/((|EU
*/ H]>b<Cs
package com.javaeye.common.business; z@5t7e)!R
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import java.io.Serializable; ~{MmUp rS
import java.util.List; u7R:7$H
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import org.hibernate.Criteria; c}(fmJB&(
import org.hibernate.HibernateException; ,2hZtJ<A
import org.hibernate.Session; mNUc g{+/
import org.hibernate.criterion.DetachedCriteria; (5AgI7I,
import org.hibernate.criterion.Projections; Ewg5s?2|
import A#t#c*
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org.springframework.orm.hibernate3.HibernateCallback; cu&tdg^q
import
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org.springframework.orm.hibernate3.support.HibernateDaoS A'(v]w
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upport; uEp
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import com.javaeye.common.util.PaginationSupport; >(>Fx\z}
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public abstract class AbstractManager extends h!#!}|Q'
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HibernateDaoSupport { .CXe*Vbd
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privateboolean cacheQueries = false; &Z
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privateString queryCacheRegion; 'J*)o<%
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publicvoid setCacheQueries(boolean tTa" JXG
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cacheQueries){ X[pk9mha
this.cacheQueries = cacheQueries; uYk4qorA
} doJ\7c5uU
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publicvoid setQueryCacheRegion(String -26GOS_8z
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queryCacheRegion){ u[25U;xo
this.queryCacheRegion = [p3)C<;ZC
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queryCacheRegion; QC+oSb!!?
} <cTusC<
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publicvoid save(finalObject entity){ ~c8Z9[QW
getHibernateTemplate().save(entity); ]F&<{\:_}
} ~4p@m>>
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publicvoid persist(finalObject entity){ Iz;hje4JL
getHibernateTemplate().save(entity); P<@Yux#
} Mk-C'
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publicvoid update(finalObject entity){ JvFU7`4@
getHibernateTemplate().update(entity); i,G )kt'H
} &W1{o&
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publicvoid delete(finalObject entity){ v&CKtk!3{
getHibernateTemplate().delete(entity); T?=[6
} F[ca4_lK
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publicObject load(finalClass entity, iRwqt-WZ
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finalSerializable id){ dm4dT59
return getHibernateTemplate().load J(&a,w>p
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(entity, id); UYu 54`'kg
} -:txmMT
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publicObject get(finalClass entity, eit>4xMu
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finalSerializable id){ *.ffyBI*~
return getHibernateTemplate().get ^FLuhLS\*
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(entity, id); Z4#lZS`'A
} /uSEG<D
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publicList findAll(finalClass entity){ oL' :07_
return getHibernateTemplate().find("from gd9ZlHo'Id
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" + entity.getName()); pf.T{/%
} G6X
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publicList findByNamedQuery(finalString d OY+| P\
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namedQuery){ H
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return getHibernateTemplate +M9=KVr
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().findByNamedQuery(namedQuery); @vf{_g<
} 7Kx3G{5ja
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publicList findByNamedQuery(finalString query, }-{l(8-
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finalObject parameter){ \IQP`JR
return getHibernateTemplate (tGK~!cAv
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().findByNamedQuery(query, parameter); e=nEx Y
} X~RET[L2
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publicList findByNamedQuery(finalString query, i3k ',8
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finalObject[] parameters){ !F{ 5"$
return getHibernateTemplate v~73
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().findByNamedQuery(query, parameters); $UlA_l29
} g5TXs^g
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publicList find(finalString query){ 2S^xqvh
return getHibernateTemplate().find
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(query); n?@o:c5,r
} LV=!nF0
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publicList find(finalString query, finalObject ^r=#HQGt
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parameter){ fw^mjD
return getHibernateTemplate().find FK!9to>
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(query, parameter); R{.wAH(
} ))63?_
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public PaginationSupport findPageByCriteria $Vp&Vc8
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(final DetachedCriteria detachedCriteria){ $ i@5'[jA
return findPageByCriteria &K k+RHM
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); yoV"?W>!
} ;3'}(_n
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public PaginationSupport findPageByCriteria T$%u=$E%F
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(final DetachedCriteria detachedCriteria, finalint K@*m6)
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startIndex){ -GP+e`d
return findPageByCriteria s@o"V >t
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(detachedCriteria, PaginationSupport.PAGESIZE, c[ff|-<g
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startIndex); oq]KOj[
} gzzPPd,hd
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public PaginationSupport findPageByCriteria ^f!d8
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(final DetachedCriteria detachedCriteria, finalint -<&"geJA
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pageSize, )2F:l0g
finalint startIndex){ >~J_9'gX6
return(PaginationSupport) 4)9X) Qx
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getHibernateTemplate().execute(new HibernateCallback(){ V6wYJ$]
publicObject doInHibernate ~2A<fL,-
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(Session session)throws HibernateException { +cy(}Vp
Criteria criteria = h.'h L
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detachedCriteria.getExecutableCriteria(session); X?rJO~5
int totalCount = XrSqUD
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((Integer) criteria.setProjection(Projections.rowCount !9iVe7V
,`+y4Z6`W2
()).uniqueResult()).intValue(); RW>Z~Nj
criteria.setProjection ? dSrY
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(null); ,O
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List items = @uY%;%Pa8
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criteria.setFirstResult(startIndex).setMaxResults lu-VBVwR
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(pageSize).list(); f<|8NQ2y.
PaginationSupport ps = drtQEc>qT
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new PaginationSupport(items, totalCount, pageSize, Kt}dTpVFr
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startIndex); 4B]8Mp~\aL
return ps; #C%<g:F8
} o/)\Q>IY
}, true); (a7IxW
} w #(XiH*
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public List findAllByCriteria(final |Z 3POD"9
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DetachedCriteria detachedCriteria){ AW> P\>{RE
return(List) getHibernateTemplate nk-6W4
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().execute(new HibernateCallback(){ <;9vwSH>
publicObject doInHibernate b@,=;Y)O
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(Session session)throws HibernateException { -]'Sy$,A
Criteria criteria = Mm.!$uR
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detachedCriteria.getExecutableCriteria(session); ={maCYlE.
return criteria.list(); 5Y9 j/wA
} !2&h=;i~V
}, true);
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} s?%1/&.~
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public int getCountByCriteria(final vgE5(fJh
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DetachedCriteria detachedCriteria){ fvNGGn!
Integer count = (Integer) m@HU;J\I
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getHibernateTemplate().execute(new HibernateCallback(){ y'pG'"U]_
publicObject doInHibernate U?|s/U
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(Session session)throws HibernateException { N;[w`d'#
Criteria criteria = +}9%Duim
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detachedCriteria.getExecutableCriteria(session); 5@ZD'
return X#eVw|
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criteria.setProjection(Projections.rowCount >{GC@Cw
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()).uniqueResult(); eW >k'ez
} O Zt 'ovY
}, true); 9,,v0tE
return count.intValue(); TvdmgVNP
} .Uih|h
} >656if O
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用户在web层构造查询条件detachedCriteria,和可选的 A0[flIl
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