Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 \baY+,Dr+
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 +>"s)R43
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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 ye(b 7CX
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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 0$*7lQ<a#M
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分页支持类: aV\i3\da
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java代码: 5(+9a
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package com.javaeye.common.util; <tD,Uu{P
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import java.util.List; lq-KM8j
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publicclass PaginationSupport { 0P$1=oK
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publicfinalstaticint PAGESIZE = 30; ~CNB3r5R
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privateint pageSize = PAGESIZE; |Xt.[1
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privateList items; csy6_q(
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privateint totalCount; 2:38CdkYp
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privateint[] indexes = newint[0]; ^Hx}.?1
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privateint startIndex = 0; 0V:H/qu8>
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public PaginationSupport(List items, int OG5{oH#K
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totalCount){ M& ZKc
setPageSize(PAGESIZE); tu\XuDky
setTotalCount(totalCount); #_DpiiS,.Q
setItems(items); tgF~5
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setStartIndex(0); U#z"t&o=L
}
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public PaginationSupport(List items, int =-r"@2HBq
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totalCount, int startIndex){ I~&*^q6 |
setPageSize(PAGESIZE); 2P"643tz
setTotalCount(totalCount); s<!A<+Sh
setItems(items); JWNN5#=fQ
setStartIndex(startIndex); WZ'<iI
} Jh-yIk
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public PaginationSupport(List items, int }>{R<[I!G
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totalCount, int pageSize, int startIndex){ xrf|c
setPageSize(pageSize); LeCc`x,5
setTotalCount(totalCount); rS [4Pey
setItems(items); Y/sav;
setStartIndex(startIndex); 'gY?=,dF>
} "Hw%@]#
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publicList getItems(){ NfoHQU<n
return items; MSCH6R"5
} \l/(L5gY
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publicvoid setItems(List items){ Q`k;E}x_-
this.items = items; JN8Rh
} aT,WXW*
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publicint getPageSize(){ 7J);{ &x9h
return pageSize; OeQ[-e
} -HF?1c
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publicvoid setPageSize(int pageSize){ v?He]e'
this.pageSize = pageSize; jkk%zu
} _
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publicint getTotalCount(){ 1K/HVj+'.
return totalCount; ?8O5%IrJ
} g:!U,<C^a
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publicvoid setTotalCount(int totalCount){ !j $cBf4
if(totalCount > 0){ Ce+:9} [
this.totalCount = totalCount; >#h,q|B
int count = totalCount / Yi9Y`~J
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pageSize; [[[C`H@
if(totalCount % pageSize > 0) e#oK%
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count++; ]WMzWt:L
indexes = newint[count]; 7&id(&y/
for(int i = 0; i < count; i++){ ,1I-%6L
indexes = pageSize * {iyJHY
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} t^&hG7L_m,
}else{ l;q]z
this.totalCount = 0; ]Gi&:k
} "M:ui0YP
} 1tY+0R
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publicint[] getIndexes(){ ./I? |ih
return indexes; u0W6u} 4;
} #H6YI3
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publicvoid setIndexes(int[] indexes){ |M?s[}ll
this.indexes = indexes; ,=e.QAF!"
} -3ePCAtXbe
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publicint getStartIndex(){ Xm# +Z`|N
return startIndex; 6"_pCkn;c<
} Lx_Jw\YO
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publicvoid setStartIndex(int startIndex){ 2|"D\N
if(totalCount <= 0) Fug4u?-n
this.startIndex = 0; +o@:8!IM1
elseif(startIndex >= totalCount) `Ij EwKra
this.startIndex = indexes bGwOhd<.
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[indexes.length - 1]; a =W%x{
elseif(startIndex < 0) [Q:mq=<Z%
this.startIndex = 0; -"zW"v)\
else{ RR=WD -l
this.startIndex = indexes Y-8BL
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[startIndex / pageSize]; )@9Eq|jMC
} vw>(JCR
} H*G(`Zl}
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publicint getNextIndex(){ 7# wB
int nextIndex = getStartIndex() + E-^(VZ_Xj
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pageSize; kxJs4BY0
if(nextIndex >= totalCount) bLS10^g5
return getStartIndex(); <#8}![3Q
else )o:sDj`b]
return nextIndex; &bq1n_
} i\;ZEM{
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publicint getPreviousIndex(){ :ek^M (
int previousIndex = getStartIndex() - q{V e%8$"
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pageSize; ..Dm@m}
if(previousIndex < 0) 8D>5(Dg-
return0; iz^a Qx/
else T-yEn&r4)
return previousIndex; WI&A+1CK-5
} u ]y[g
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抽象业务类 f"gYXaVF+
java代码: y=pW+$k
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/** sMAj?]hI$
* Created on 2005-7-12 ~)#E?:h5
*/ LK4NNZf7
package com.javaeye.common.business; &u^]YE{
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import java.io.Serializable; 0'f\>4B
import java.util.List; OmkJP
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import org.hibernate.Criteria; > dVhIbG
import org.hibernate.HibernateException; tq,^!RSbZ
import org.hibernate.Session; #/Ob_~-?j
import org.hibernate.criterion.DetachedCriteria; oQpGa>6U&
import org.hibernate.criterion.Projections; )?OdD7gd
import Kg~D~
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org.springframework.orm.hibernate3.HibernateCallback; 66-\}8f8a
import y$nI?:d
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org.springframework.orm.hibernate3.support.HibernateDaoS `%~}p7Zu
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upport; 3]'ab-,Vp
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import com.javaeye.common.util.PaginationSupport; zOA~<fhT
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public abstract class AbstractManager extends (Z @dz
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HibernateDaoSupport { D^>d<LX
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privateboolean cacheQueries = false; .fqy[qrM
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privateString queryCacheRegion; h}'Hst
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publicvoid setCacheQueries(boolean Lp"OXJ*es
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cacheQueries){ 9i 9
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this.cacheQueries = cacheQueries; %'g)MK!e
} (!8b$)k
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publicvoid setQueryCacheRegion(String jmgkY)rb R
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queryCacheRegion){ AH/^v;-
this.queryCacheRegion = [?:MIl#!
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queryCacheRegion; x0%m}P/
} @1xVWSF
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publicvoid save(finalObject entity){ d0}(d Gl
getHibernateTemplate().save(entity); bh5P98s
} Wtw,YFT
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publicvoid persist(finalObject entity){ f?^-JZ
getHibernateTemplate().save(entity); _:NQF7X#ug
} *k#"@
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publicvoid update(finalObject entity){ Z~h6^h
getHibernateTemplate().update(entity); k7@QFw4 j
} 3
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publicvoid delete(finalObject entity){ Vb#a ,t
getHibernateTemplate().delete(entity); !%}n9vr!}\
} )M"NMUuU"
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publicObject load(finalClass entity, {T^D&i# o
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finalSerializable id){ 6&'kN2
return getHibernateTemplate().load wXp:XZ:]T
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(entity, id); ?[bE/Ya+S
} 2V%z=
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publicObject get(finalClass entity, c\>I0HH;!
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finalSerializable id){ t\QLj&h}E
return getHibernateTemplate().get $X-PjQb1Bb
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(entity, id); <Qv/#
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} G na%|tUz|
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publicList findAll(finalClass entity){ q,#s m'S
return getHibernateTemplate().find("from IEm~^D#<=
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" + entity.getName()); 'ParMT
} Q_fgpjEh/t
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publicList findByNamedQuery(finalString _2`b$/)-
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namedQuery){ T?[;ej:
return getHibernateTemplate vOCaru?~h
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().findByNamedQuery(namedQuery); Bca$%3M
} @}Ry7H0O
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publicList findByNamedQuery(finalString query, ]D5Maid+
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finalObject parameter){ yc9!JJMkH
return getHibernateTemplate nG5\vj,zB
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().findByNamedQuery(query, parameter); Bi;a~qE
} }OnU32P
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publicList findByNamedQuery(finalString query, 03|nP$g
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finalObject[] parameters){ 8;"%x|iBoL
return getHibernateTemplate 9?hF<}1XH}
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().findByNamedQuery(query, parameters); DFZ@q=ZT
} b@4UR<
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publicList find(finalString query){ }m?Ut|
return getHibernateTemplate().find ^|vk^`S
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(query); r|ZB3L|7
} $$0<
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publicList find(finalString query, finalObject e~)4v
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parameter){ g%]<sRl:-
return getHibernateTemplate().find aw lq/
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(query, parameter); L3Y2HZ
} C^'r>0
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public PaginationSupport findPageByCriteria ZHeue_~x4
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(final DetachedCriteria detachedCriteria){ 0Qeda@J
return findPageByCriteria yp=sL' E
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); 5M'cOJ
} 9cN@y<_I
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public PaginationSupport findPageByCriteria tFn[U#'
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(final DetachedCriteria detachedCriteria, finalint nXfz@q
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startIndex){ ljrJC
return findPageByCriteria #k>n5cR@0
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(detachedCriteria, PaginationSupport.PAGESIZE, ZW"f*vwQo
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startIndex); ?Q=(?yR0]
} am.d^'
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public PaginationSupport findPageByCriteria 4mp)v*z
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(final DetachedCriteria detachedCriteria, finalint zCA8}](C^
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pageSize, @|ZUyat
finalint startIndex){ b|x B<
return(PaginationSupport) x%@M*4:&
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getHibernateTemplate().execute(new HibernateCallback(){ ?XyrG1('
publicObject doInHibernate
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(Session session)throws HibernateException { ZT/f
Criteria criteria = d!&LpODI]*
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detachedCriteria.getExecutableCriteria(session); LR#.xFQ+
int totalCount = =M@)qy
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((Integer) criteria.setProjection(Projections.rowCount 9%ct
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()).uniqueResult()).intValue(); q2*)e/}H
criteria.setProjection ]!P6Z?
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(null); BSSehe*
List items = a8[%-eW,
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criteria.setFirstResult(startIndex).setMaxResults \?e2qu/ C
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(pageSize).list(); Fv/{)H<:y
PaginationSupport ps = (qc<'$o
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new PaginationSupport(items, totalCount, pageSize, d^IX(y*$
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startIndex); Edh9=sxL
return ps; d9e~><bPJ
} j/T@-7^0
}, true); T=V{3v@zs
} |yOIC,5[JW
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public List findAllByCriteria(final *Y53bZ
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DetachedCriteria detachedCriteria){ @*op5qVw
return(List) getHibernateTemplate q(s0dkrj
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().execute(new HibernateCallback(){ !m_y@~pV#u
publicObject doInHibernate '5T:*Yh
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(Session session)throws HibernateException { F!C<^q~!
Criteria criteria = Op9+5]XF
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detachedCriteria.getExecutableCriteria(session); 'S
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return criteria.list(); ,e`n2)
} Ug gg!zA
}, true); id`9,IJx
} v)K|{x
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public int getCountByCriteria(final :N<o<