Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 Tm,L?Jh
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 i2c<q0u
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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 E^ti!4{<
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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 \Xp"I5
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分页支持类: Q(Y,p`>
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java代码: tOVm~C,R
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package com.javaeye.common.util; 3Q"+
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import java.util.List; smS0Rk
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publicclass PaginationSupport { Q2PwO;E.`C
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publicfinalstaticint PAGESIZE = 30; hS/'b$#
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privateint pageSize = PAGESIZE; <08 V-
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privateList items; S,>n'r[
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privateint totalCount; (!=aRC.-
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privateint[] indexes = newint[0]; +Enff0 =+
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privateint startIndex = 0; bS"M*
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public PaginationSupport(List items, int ~;s)0M
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totalCount){ 6S&YL
setPageSize(PAGESIZE); |`/uS;O
setTotalCount(totalCount); m^+~pC5
setItems(items); YtQWArX,
setStartIndex(0); U$Z}<8
} oa7Hx<Y
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public PaginationSupport(List items, int fe/6JV
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totalCount, int startIndex){ p$<qT^]&
setPageSize(PAGESIZE); a06q-3zw
setTotalCount(totalCount); %tLq&tyeY
setItems(items); Jp0.h8i
setStartIndex(startIndex); U0T N8O}Z
} R:p,Hav<q
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public PaginationSupport(List items, int x~^nlnKVf
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totalCount, int pageSize, int startIndex){ *RM'0[1F4
setPageSize(pageSize); Uc2#so$9
setTotalCount(totalCount); Z;s-t\C
setItems(items); g&wQ^
setStartIndex(startIndex); 'h=2_%l@Y
} RMXj)~4.
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publicList getItems(){ Y6a|\K|
return items; J_$~OEC~
} bS<p dOX_
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publicvoid setItems(List items){ @9a=D<'>
this.items = items; s,x]zG"
} eW%jDsC
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publicint getPageSize(){ `Mg
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return pageSize; eo[^ij
} W
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publicvoid setPageSize(int pageSize){ \eCdGx?
this.pageSize = pageSize; AJu.
} A\Gw+l<h,
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publicint getTotalCount(){ lla96\R
return totalCount; "
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} <ZEA&:p
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publicvoid setTotalCount(int totalCount){ {VG6m
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if(totalCount > 0){ `314.a6S
this.totalCount = totalCount; ;*p}~#2
int count = totalCount / Q{60^vg
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pageSize; ;q2T*4NN
if(totalCount % pageSize > 0) 6~LpBlb
count++; Ok!{2$P8U9
indexes = newint[count]; &@+;]t
for(int i = 0; i < count; i++){ )3
indexes = pageSize * @T"385>
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} jYv
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}else{ jC%I]#!n
this.totalCount = 0; h>?OWI
} kTV D4Z=
} zAewE@N#_
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publicint[] getIndexes(){ V5+a[`]
return indexes; &PX'=UT
} 0'uj*Y{L
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publicvoid setIndexes(int[] indexes){ 0ZN/-2c A#
this.indexes = indexes; mf#oa~_
} WyP1"e^9
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publicint getStartIndex(){ [aC(Ga}
return startIndex; }- Sr@bE
} RiklwR#~r/
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publicvoid setStartIndex(int startIndex){ ?AE%N.rnsi
if(totalCount <= 0) x&
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this.startIndex = 0; {$^|^n5j
elseif(startIndex >= totalCount) v]v f(]""
this.startIndex = indexes trLs4o,
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[indexes.length - 1]; dq2v[?*R
elseif(startIndex < 0) `F#KXk
this.startIndex = 0; H@zpw1fH+
else{ U!4 ^;
this.startIndex = indexes /_P`xm+=AC
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[startIndex / pageSize]; \] K-<&f
} Zh@\+1]
} f+&yc'[
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publicint getNextIndex(){ 2k_Bo~.
int nextIndex = getStartIndex() + sdLFBiR
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pageSize; /.r($Sg^
if(nextIndex >= totalCount) B}W^s;h
return getStartIndex(); 1K>4i. X
else Rjf|
return nextIndex; ?k#%AM
} qF?S[Z;
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publicint getPreviousIndex(){ dZ*o H#B
int previousIndex = getStartIndex() - LBg#KQ@
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pageSize; pmC@ fB
if(previousIndex < 0) vd~O:=)4
return0; x{m)I<.:
else =GF+hM/~
return previousIndex; deNU[
} 4{|lzo'&
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} x;+,lP
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抽象业务类 cMj<k8.{
java代码: x\*5A,w{c]
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/** -&c@c@dC
* Created on 2005-7-12 {PU[MHZF
*/ ]n{2cPx5d
package com.javaeye.common.business; xsfq[}eH<
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import java.io.Serializable; tQ/U'Ap&
import java.util.List; er53?z7zP.
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import org.hibernate.Criteria; "783F:mPh
import org.hibernate.HibernateException; C oaqi`v4T
import org.hibernate.Session; 2dC)%]aLme
import org.hibernate.criterion.DetachedCriteria; |k8;[+
import org.hibernate.criterion.Projections; ?mV[TM{p
import |A2.W8`o
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org.springframework.orm.hibernate3.HibernateCallback; pH4i6B*5
import [2*?b/q3J
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org.springframework.orm.hibernate3.support.HibernateDaoS l~mC$>f
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upport; W}6OMAbsE;
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import com.javaeye.common.util.PaginationSupport; @$G{t^&os
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public abstract class AbstractManager extends 3UR'*5|'
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HibernateDaoSupport { "`6pF8k
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privateboolean cacheQueries = false; C-2{<$2k
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privateString queryCacheRegion; fYgEiap
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publicvoid setCacheQueries(boolean 2E0A`
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cacheQueries){ rq(9w*MW:
this.cacheQueries = cacheQueries; bukdyo;l
} s:/Wz39SY3
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publicvoid setQueryCacheRegion(String $j(laD#AR
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queryCacheRegion){ QgF2f/;!
this.queryCacheRegion = #MyF 1E
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queryCacheRegion; }uFV\1
} \281X
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publicvoid save(finalObject entity){ :|&S7&l]
getHibernateTemplate().save(entity); ~pt#'65}:
} xoe/I[P]U
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publicvoid persist(finalObject entity){ z*ly`-!
getHibernateTemplate().save(entity); D~Rv"Hh
} HrK7qLw7
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publicvoid update(finalObject entity){ /ka "YU
getHibernateTemplate().update(entity); r?%,#1|$$
} rds4eUxe
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publicvoid delete(finalObject entity){ `Lj'2LoER
getHibernateTemplate().delete(entity); M+l~^E0Wj
} P[K42mm
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publicObject load(finalClass entity, "2_nN]%u-
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finalSerializable id){ =38c}(
return getHibernateTemplate().load p!/ *(TT
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(entity, id); Nm{J=`
} -Pp =)_O
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publicObject get(finalClass entity, F9J9zs*,
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finalSerializable id){ p)c"xaTP#F
return getHibernateTemplate().get `st^i$A
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(entity, id); 70F(`;
} ?
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publicList findAll(finalClass entity){ R<Uu(-O-
return getHibernateTemplate().find("from y.aeXlc[
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" + entity.getName()); uB;PaZG?{
} SU7 erCHX
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publicList findByNamedQuery(finalString
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namedQuery){ i Qa=4'9;
return getHibernateTemplate ;mauA#vd
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().findByNamedQuery(namedQuery); 1Q!^%{Y;
} 2>F`H7W
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publicList findByNamedQuery(finalString query, #gSIa6z1W
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finalObject parameter){ {1}p+dEK
return getHibernateTemplate Gj- *D7X5
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().findByNamedQuery(query, parameter); ?'mi6jFFh
} }kF*I@:g
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publicList findByNamedQuery(finalString query, 55V&[>|K5
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finalObject[] parameters){ D.,~I^W
return getHibernateTemplate 115zvW
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().findByNamedQuery(query, parameters); EMw
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} fctVJ{?
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publicList find(finalString query){ f}:W1&LhI?
return getHibernateTemplate().find \w=*:Z
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(query); zuYz"-(L
} x}7` Q:k=
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publicList find(finalString query, finalObject %&&;06GU}
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parameter){ ]-8yZWal
return getHibernateTemplate().find icXeB_&cS
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(query, parameter); =`f"8,5
} qVr?st
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public PaginationSupport findPageByCriteria 3.V-r59
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(final DetachedCriteria detachedCriteria){ 4^{~MgQWK+
return findPageByCriteria GcHZ&m4
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); P3+?gW'
} Qe4"a*l-r
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public PaginationSupport findPageByCriteria 1J[|Ow
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(final DetachedCriteria detachedCriteria, finalint ]oE:p
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startIndex){ :=2l1Y[-G
return findPageByCriteria . *c%A^>
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(detachedCriteria, PaginationSupport.PAGESIZE, >-4kO7.V
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startIndex); (6~~e$j
} k-|b{QZ8!;
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public PaginationSupport findPageByCriteria ky{-NrK
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(final DetachedCriteria detachedCriteria, finalint w<G'gi]
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pageSize, Z)dE#A_X
finalint startIndex){ hgI;^ia
return(PaginationSupport) |C3~Q{A
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getHibernateTemplate().execute(new HibernateCallback(){ Jsw%.<
publicObject doInHibernate +Hf Zs"x
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(Session session)throws HibernateException { ALl0(<u67
Criteria criteria = Z >F5rkJ
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detachedCriteria.getExecutableCriteria(session); =J827c{.
int totalCount = D",~?
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((Integer) criteria.setProjection(Projections.rowCount PtT$#>hx]
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()).uniqueResult()).intValue(); ` EgO&;1D)
criteria.setProjection 6),VN>j
"&N1$$
(null); X.hVMX2B
List items = `'}c-
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criteria.setFirstResult(startIndex).setMaxResults ~4C:2
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(pageSize).list(); vGI?X#w3
PaginationSupport ps =
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new PaginationSupport(items, totalCount, pageSize, EP}NT)z,{
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startIndex); 'qnnZE
return ps; -40OS=wpA
} -8D$ [@y(
}, true); q? 2kD"%$
} @Yy']!Ju
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public List findAllByCriteria(final b8TwV_&|X
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DetachedCriteria detachedCriteria){ r-IG.ym3
return(List) getHibernateTemplate t*cVDA&K