Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ji?0;2Y
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 %/>\`d?
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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 qe4hNFq
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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 lAJ)
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分页支持类: [6K2V:6:
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java代码: \NhCu$'
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package com.javaeye.common.util; @^a6^*X>
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import java.util.List; N~{0QewMI'
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publicclass PaginationSupport { z{pNQ[t1Z
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publicfinalstaticint PAGESIZE = 30; V9-pY/v9
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privateint pageSize = PAGESIZE; !H{)L@f
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privateList items; <*0MD6$5
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privateint totalCount; H$KE*Wwq
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privateint[] indexes = newint[0]; DBAJkBs
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privateint startIndex = 0; %}%D8-d}G
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public PaginationSupport(List items, int C, n]9
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totalCount){ Jc~^32
setPageSize(PAGESIZE); yiQke
setTotalCount(totalCount); v\rOs+.s
setItems(items); +cvz
setStartIndex(0); {k1s@KXtd
} @I\Z2-J
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public PaginationSupport(List items, int 7IBm(#
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totalCount, int startIndex){ ]w]Swt2n
setPageSize(PAGESIZE); VXQS~#dQj
setTotalCount(totalCount); T~s/@*y9
setItems(items); _bqiS]:
setStartIndex(startIndex); -))>7skc
} _t6siB_u
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public PaginationSupport(List items, int cx|[P6d
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totalCount, int pageSize, int startIndex){ -?e~dLu
setPageSize(pageSize); cNw<k&w6F
setTotalCount(totalCount); PtO-%I<N
setItems(items); G\Hck=P[$3
setStartIndex(startIndex); #I%< 1c%XA
} F){f{-@)
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publicList getItems(){ vxUJ4|Qz
return items; {-^>)
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} }E]`ly<Z
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publicvoid setItems(List items){ , Ot3N\%yn
this.items = items; H`-%)c=
} DG8$zl5
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publicint getPageSize(){ LoOyqJ,
return pageSize; l6xC'c,jg
} =ADAMP
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publicvoid setPageSize(int pageSize){ c1wgb8
this.pageSize = pageSize; +
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} [aO"9
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publicint getTotalCount(){ PdMx6 Ab
return totalCount; Mb\~WUWI
} &w2.b:HF
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publicvoid setTotalCount(int totalCount){ 1(w0*`
if(totalCount > 0){ 6TfL|W<
this.totalCount = totalCount; ~Az20RrK)
int count = totalCount / 9Lk.\.
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pageSize; uWx/V+w
if(totalCount % pageSize > 0) PHfGl
count++; aC]~
indexes = newint[count]; (z2)<_bXJ
for(int i = 0; i < count; i++){ )prpG !
indexes = pageSize * GK95=?f~8;
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} O~{Zs\u9
}else{ 4E4o=Z|K
this.totalCount = 0; >m}.}g8
} 7*'_&0
} :b=`sUn<X+
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publicint[] getIndexes(){ dAEz
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return indexes; /,Ln)?eD
} ]_d(YHYf
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publicvoid setIndexes(int[] indexes){ `U2PlCf|
this.indexes = indexes; |t]-a%A=w
} 3(^9K2.s}
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publicint getStartIndex(){ sN-5vYfC*
return startIndex; TQ=\l*R(A
} lqX]'gu]\
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publicvoid setStartIndex(int startIndex){ DbPw)aCj
if(totalCount <= 0) 8x58sOR=
this.startIndex = 0;
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elseif(startIndex >= totalCount) m\1*/6oV
this.startIndex = indexes {nryAXK
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[indexes.length - 1]; KT?vs5jg$&
elseif(startIndex < 0) "~]9}KM}3W
this.startIndex = 0; Ma-^o<{
else{ 2(\>PN-
this.startIndex = indexes &JfyXM[]
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[startIndex / pageSize]; ^Xa-)Pu
} 9!2KpuWji
} U%gP2]t%cs
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publicint getNextIndex(){ %=#&\ldPS
int nextIndex = getStartIndex() + hJFQ/(
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pageSize; He#+zE;
if(nextIndex >= totalCount) _<t3~{qUT
return getStartIndex(); YLPiK
else H@G7oK
return nextIndex; @D0Ut9)
} -uv1$|
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publicint getPreviousIndex(){ {zVJlJKxs
int previousIndex = getStartIndex() - Oo7n_h1
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pageSize; N1LR _vS"
if(previousIndex < 0) XHN?pVZ7
return0; R#1m_6I
else Hd;>k$B
return previousIndex; ? ~_%I
} Lb2Bu >
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} ReSP)%oW
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抽象业务类 F<'g6f
java代码: )x( *T
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/** jS R:ltd
* Created on 2005-7-12 *:YW@Gbm
*/ SvI
package com.javaeye.common.business; zKT \i
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import java.io.Serializable; x!I7vs~~zW
import java.util.List; |2n2
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import org.hibernate.Criteria; {tWfLfzU
import org.hibernate.HibernateException; /eIwv31
import org.hibernate.Session; l l&iMj]
import org.hibernate.criterion.DetachedCriteria;
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import org.hibernate.criterion.Projections; c:=Z<0S;
import _e`b^_
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org.springframework.orm.hibernate3.HibernateCallback; :$P <e~z'
import g@nE7H1V
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org.springframework.orm.hibernate3.support.HibernateDaoS }O
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upport; 1
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import com.javaeye.common.util.PaginationSupport; H2k>E}`
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public abstract class AbstractManager extends xss D2*l
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HibernateDaoSupport { -O(.J'=8
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privateboolean cacheQueries = false; =3 -G
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privateString queryCacheRegion; 61gZZM
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publicvoid setCacheQueries(boolean `^_.E:f
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cacheQueries){ :=~([oSNW"
this.cacheQueries = cacheQueries; r-'j#|^tz
} R \`,Q'3
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publicvoid setQueryCacheRegion(String :j9;P7&"?
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queryCacheRegion){ mg#+%v
this.queryCacheRegion = 2RM0ca_F
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queryCacheRegion; @8/-^Rh*
} 0|4XV{\qT$
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publicvoid save(finalObject entity){ %PkJ7-/b|^
getHibernateTemplate().save(entity); Rjh/M`|
} u 4)i7
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publicvoid persist(finalObject entity){ =&}dP%3LC)
getHibernateTemplate().save(entity); "I+wU`AIek
} yYF80mnJz
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publicvoid update(finalObject entity){ '9^x"U9c
getHibernateTemplate().update(entity); x>Q#Bvy
} 2+ 9">a@
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publicvoid delete(finalObject entity){ Y|1kE;
getHibernateTemplate().delete(entity);
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} L0uN|?}
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publicObject load(finalClass entity, \idg[&}l}
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finalSerializable id){ \W*ouH
return getHibernateTemplate().load Pb[wysy
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(entity, id); eqjl$QWPJS
} [>6:xGSe9X
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publicObject get(finalClass entity, >i`'e~%
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finalSerializable id){ WH'[~O
return getHibernateTemplate().get =_v_#;h&
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(entity, id); vH7"tz&RIp
} O{%y `|m
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publicList findAll(finalClass entity){ >B~p[wh0
return getHibernateTemplate().find("from vsES`
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} Zx`hutCv
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publicList findByNamedQuery(finalString \Dr@n^hk@[
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namedQuery){ *[_?4*F
return getHibernateTemplate #x"pG
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publicList findByNamedQuery(finalString query, @^%zh
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finalObject parameter){ (5'qEi ea
return getHibernateTemplate #PtV=Ee1
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().findByNamedQuery(query, parameter); ZEHz/Y%
} 7G2TT a
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publicList findByNamedQuery(finalString query, YMJjO0
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finalObject[] parameters){ pspV~9,
return getHibernateTemplate ^V>sNR
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().findByNamedQuery(query, parameters); c< \:lhl
} I_eYTy-a`1
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publicList find(finalString query){ P3@[x
return getHibernateTemplate().find OGh bH a
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(query); TX8,+s+
} %.[GR
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publicList find(finalString query, finalObject |\Qr
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return getHibernateTemplate().find '&s:,o-p
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(query, parameter); 9j9A'Y9(
} rWSw1(sAA
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public PaginationSupport findPageByCriteria >#c]rk:
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(final DetachedCriteria detachedCriteria){ ^9"|tWf6O
return findPageByCriteria o-7>^wV%BD
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); J;'?(xO3\
}
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public PaginationSupport findPageByCriteria G4AX8@;U
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(final DetachedCriteria detachedCriteria, finalint %,>> <8
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startIndex){ hIPDJ1a
return findPageByCriteria ^K&&O{
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startIndex); USe"1(|E
} K3'`!K a*
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public PaginationSupport findPageByCriteria .ay
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(final DetachedCriteria detachedCriteria, finalint ].2q.7Yur
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finalint startIndex){ }=7tGqfw
return(PaginationSupport) &bnF{~<\
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getHibernateTemplate().execute(new HibernateCallback(){ `%F.]|Y0
publicObject doInHibernate Qe]@`Vg
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(Session session)throws HibernateException { 1 dI
Criteria criteria = )#i]exZ
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detachedCriteria.getExecutableCriteria(session); OFCkQEG=y>
int totalCount = QQ1+uY
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((Integer) criteria.setProjection(Projections.rowCount %=\h=\wt
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()).uniqueResult()).intValue(); p;BdzV>
criteria.setProjection f{WJM>$:
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(null); rWi9'6
List items = L=4?vs
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criteria.setFirstResult(startIndex).setMaxResults uoaF(F-
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(pageSize).list(); NzNAhlXj3
PaginationSupport ps = xg\M9&J
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new PaginationSupport(items, totalCount, pageSize, xWn.vSos
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startIndex); Hfm4
return ps; 7^as~5'&-
} W"VN2
}, true); 44RZk|U1J{
} mmr>"`5.
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public List findAllByCriteria(final S1E2E3
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DetachedCriteria detachedCriteria){ qmOGsj`#
return(List) getHibernateTemplate 8p>%}LX/
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().execute(new HibernateCallback(){ a%Cq?HZ7
publicObject doInHibernate / D#vs9S
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(Session session)throws HibernateException { SU2(XP]5
Criteria criteria = (al7/EhY
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detachedCriteria.getExecutableCriteria(session); Nki18ud#
return criteria.list(); iN+p>3w^l
} 0!_D M^3
}, true); \9@*Jgpd6*
} aSXoYG0\
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public int getCountByCriteria(final Z]uN9c
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DetachedCriteria detachedCriteria){ N, ;'oL+
Integer count = (Integer) w0^( jMQe^
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getHibernateTemplate().execute(new HibernateCallback(){ Qf7]t-Kp
publicObject doInHibernate <74q]C
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(Session session)throws HibernateException { ?VS {,"X
Criteria criteria = wC'KI8-
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detachedCriteria.getExecutableCriteria(session); 8X5;)h
return dGP*bMCT
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criteria.setProjection(Projections.rowCount _BtppQIWv
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()).uniqueResult(); HBo^8wN
} !+9H=u
}, true); .I
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return count.intValue(); Ai(M06P:h
} IP&En8W+
} >OZ+k(saL
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