Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 yJJNr]oq
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 IO x9".
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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 ?,J'3nZ'
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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 m4.IaBn/
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分页支持类: Jf-4Q!
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java代码: T(E$0a)#
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package com.javaeye.common.util; 4]F:QS%
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import java.util.List; #G;0yB:76
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publicclass PaginationSupport { i1"4ztZ
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publicfinalstaticint PAGESIZE = 30; 4PwjG;!K
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privateint pageSize = PAGESIZE; [YQVZBT|{
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privateList items; #@QZ
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privateint totalCount; )zzK\I6/EQ
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privateint[] indexes = newint[0]; pDlU*&
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privateint startIndex = 0; dy^Zlu`
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public PaginationSupport(List items, int &jh'B ,
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totalCount){ DdY89R 6
setPageSize(PAGESIZE); ai!zb2j!E
setTotalCount(totalCount); @pcmVsIp
setItems(items); |2#)lGA
setStartIndex(0); L{py\4z'_
} Sl,\<a
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public PaginationSupport(List items, int "Zo<$p3]
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totalCount, int startIndex){ fO+$`r>9
setPageSize(PAGESIZE); 1Y2]jz4
setTotalCount(totalCount); i /j
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setItems(items); i$GL]0
setStartIndex(startIndex); 8ug\GlZc
} E>t5/^c)*w
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public PaginationSupport(List items, int g]sc)4
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totalCount, int pageSize, int startIndex){ -RisZ-n*
setPageSize(pageSize); r2WW}W
setTotalCount(totalCount); r &<sSE;5
setItems(items); W+v7OSd92
setStartIndex(startIndex); 9A@/5Z:v5W
} 8U98`#
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publicList getItems(){ 3oH .1M/
return items; T}%8Vlt]
} 2$)xpET
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publicvoid setItems(List items){ hG~TqH^}B
this.items = items; f@3?kM(
} )5NfOvmNB
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publicint getPageSize(){ '<}N`PS#N
return pageSize; ia'eV10
} u0&QStI
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publicvoid setPageSize(int pageSize){ JDTlzu1hR
this.pageSize = pageSize; op\'T;xIu
} 7r F )fKW
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publicint getTotalCount(){ *]
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return totalCount; 2U;6sn*e
} O;bnyB$
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publicvoid setTotalCount(int totalCount){ f6\`eLG i1
if(totalCount > 0){ cym<uh-Wg^
this.totalCount = totalCount; cPFs K*w
int count = totalCount / p_^Jr*Mv
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pageSize; it
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if(totalCount % pageSize > 0) (n4\$LdP-
count++; ULqFJ*nla
indexes = newint[count]; Oz3JMZe
for(int i = 0; i < count; i++){ ~F gxhK2+
indexes = pageSize *
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} _>b=f
}else{ FTVV+9.l:
this.totalCount = 0; 0Nvk|uI
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} Bri yy
} Pdq}~um3{
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publicint[] getIndexes(){ L5 -p0O`R
return indexes; 9L2]PU
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} Wu}84W"!.V
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publicvoid setIndexes(int[] indexes){ ><t4 f(d
this.indexes = indexes; %5?Zjp+9
} /0.m|Th'm
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publicint getStartIndex(){ pTQ70V3
return startIndex; r |H 1Yy
} -2o_ L?
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publicvoid setStartIndex(int startIndex){ ?@*hU2MTC
if(totalCount <= 0) -a=RCzX]
this.startIndex = 0; tsYBZaH
elseif(startIndex >= totalCount) U*p;N,SjQ
this.startIndex = indexes aEL^N0\d
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[indexes.length - 1]; ZNHlq5
elseif(startIndex < 0) ,/oqLI\
this.startIndex = 0; xF/u('A
else{ *Y:;fl +v
this.startIndex = indexes -o+<m4he
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[startIndex / pageSize]; *VuiEBG
} K:<j=j@51
} [w1 4hHnq
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publicint getNextIndex(){ tL>c@w#Pv
int nextIndex = getStartIndex() + IBT1If3
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pageSize; Lrrc&;
if(nextIndex >= totalCount) Y8 % bk2
return getStartIndex(); rpB0?h!$
else X[e:fW[e)
return nextIndex; y7X2|$9z-
} AGWs>
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publicint getPreviousIndex(){ V6L0\
int previousIndex = getStartIndex() - ^\(<s
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pageSize; Bu ]PNKIi
if(previousIndex < 0) eBZ94rA]
return0; s"'ns
else Rj'Tu0l
return previousIndex; F|wT']1Y
} @mD$Z09~
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} -eQ>3x&3r
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抽象业务类 ^b;3Jj
java代码: >WcOY7
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/** =$wQA
* Created on 2005-7-12 K!<3|d
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package com.javaeye.common.business; >d9b"T
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import java.io.Serializable; )w_hbU_Pb&
import java.util.List; aA6m5
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import org.hibernate.Criteria; >53Hqzm&
import org.hibernate.HibernateException; YXlaE=9bn
import org.hibernate.Session; /a .XWfu
import org.hibernate.criterion.DetachedCriteria; v;WfcpWq2
import org.hibernate.criterion.Projections; {hH8+4c7
import H"; !A=0
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org.springframework.orm.hibernate3.HibernateCallback; \dHdL\f
import HOr.(gL!
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org.springframework.orm.hibernate3.support.HibernateDaoS 6N#0D2~^
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upport; v[b|J7k
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import com.javaeye.common.util.PaginationSupport; Oj F]K,$
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public abstract class AbstractManager extends sPP(>y( \
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HibernateDaoSupport { )F\^-laMuK
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privateboolean cacheQueries = false; ml1My1
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privateString queryCacheRegion; ?X'l&k>
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publicvoid setCacheQueries(boolean dsG:DS`q
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cacheQueries){ \uyZl2=WWa
this.cacheQueries = cacheQueries; *K'#$`2
} *v:o`{vM[
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publicvoid setQueryCacheRegion(String 0 /)OAw"m
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queryCacheRegion){ #PGpB5vnaA
this.queryCacheRegion = (
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queryCacheRegion; i$g6C
} \!Wph5wA
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publicvoid save(finalObject entity){ ~j36(`t
getHibernateTemplate().save(entity); Srom@c
} \B
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publicvoid persist(finalObject entity){ l,k.Jo5
getHibernateTemplate().save(entity); aE2Yl
} M!b-;{;'
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publicvoid update(finalObject entity){ m0,TH[HWGF
getHibernateTemplate().update(entity); 5`FPv4
} A2%RcKY7
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publicvoid delete(finalObject entity){ u):Nq<X
getHibernateTemplate().delete(entity); FfM,~s<Efz
} v@1f,d
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publicObject load(finalClass entity, ;XI=Y"h{%
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finalSerializable id){ [<JY[o=
return getHibernateTemplate().load \y0]BH
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(entity, id); We@wN:
} J l
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publicObject get(finalClass entity, 'R
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finalSerializable id){ jJK@i\bU_
return getHibernateTemplate().get gJJ BRn{MI
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(entity, id); 2!nz>K
} Id?2(Tg
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publicList findAll(finalClass entity){ yaK4% k
return getHibernateTemplate().find("from _m#P\f'p
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" + entity.getName()); %&M*G@j
} %TDY &@i=
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publicList findByNamedQuery(finalString $p\ 0/
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namedQuery){ Og :aflS
return getHibernateTemplate **~1`_7~*
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().findByNamedQuery(namedQuery); o>y@1%aU
} dG%{&W9
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publicList findByNamedQuery(finalString query, FJIo]p
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finalObject parameter){ Eikt,
return getHibernateTemplate K j6@=
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().findByNamedQuery(query, parameter); Ze3sc$fG2
} $sb `BS
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publicList findByNamedQuery(finalString query, ]Vd1fkXO0
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finalObject[] parameters){ N3&n"w _d
return getHibernateTemplate ,H5o/qNU`{
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().findByNamedQuery(query, parameters); GQ1m
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} RsnFjfb'
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publicList find(finalString query){ wyUfmk_}
return getHibernateTemplate().find : G0^t
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(query); DX<xkS[P
} x}jiHV@=
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publicList find(finalString query, finalObject pTE.,~-J^j
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parameter){ vf
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return getHibernateTemplate().find ]3~X!(O
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(query, parameter); Q_FL8w9D~8
} cE3V0voSw1
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public PaginationSupport findPageByCriteria `E5vO1Pl
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(final DetachedCriteria detachedCriteria){ k^Uk=)9
return findPageByCriteria E>N L/[1d
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(detachedCriteria, PaginationSupport.PAGESIZE, 0); j?s+#t
} c3|/8
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public PaginationSupport findPageByCriteria 0r ilg
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(final DetachedCriteria detachedCriteria, finalint 6a*OQ{8
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startIndex){ ka[%p, H
return findPageByCriteria @^K_>s9B
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(detachedCriteria, PaginationSupport.PAGESIZE, V1\x.0Fs
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startIndex); ZsL-vlv
} Q=.j>aM+_
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public PaginationSupport findPageByCriteria .6y(ox|LL
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(final DetachedCriteria detachedCriteria, finalint m|k:wuzqK
: t6.J
pageSize, /rmm@
finalint startIndex){ \I~9%QJ>
return(PaginationSupport) Xd@x(T~'X
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getHibernateTemplate().execute(new HibernateCallback(){ tCbnB
publicObject doInHibernate I cz)Qtg|
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(Session session)throws HibernateException { S0-/9h
Criteria criteria = ^]1M8R,
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detachedCriteria.getExecutableCriteria(session); O-YB+~"3Z
int totalCount = ]5hGSl2
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((Integer) criteria.setProjection(Projections.rowCount UY*[='l!)
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()).uniqueResult()).intValue(); p/%B>Y>
criteria.setProjection CsW*E,|xyP
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(null); ^g*2jH+
List items = #e(P~'A0
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criteria.setFirstResult(startIndex).setMaxResults ZHW|P
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(pageSize).list(); D"+xF&
PaginationSupport ps = Q7@
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new PaginationSupport(items, totalCount, pageSize, oB]
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startIndex); qra5&Fvb
return ps; c!}f\ ]D
} R'{BkC}.
}, true); hu''"/raM
} mtu`m6Xix
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public List findAllByCriteria(final D_4UM#Tw
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DetachedCriteria detachedCriteria){ nolLeRE1
return(List) getHibernateTemplate ~i)IY1m"
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().execute(new HibernateCallback(){ *Mr?}_,X*
publicObject doInHibernate 84$#!=v
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(Session session)throws HibernateException { +:fr(s!OE
Criteria criteria = rezH5d6z62
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detachedCriteria.getExecutableCriteria(session); H3Z"u
return criteria.list(); _/zK^S)
} WQT;k0;T]
}, true); _N&]w*ce
} K,\Bj/V(
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public int getCountByCriteria(final ^@0-E@ {c
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DetachedCriteria detachedCriteria){ WSPlM"h
Integer count = (Integer) hWqI*xSaJ
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getHibernateTemplate().execute(new HibernateCallback(){ t/9,JG
publicObject doInHibernate "mm|0PUJ
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(Session session)throws HibernateException { -8r9DS-/W
Criteria criteria = ]rP'\a
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detachedCriteria.getExecutableCriteria(session); nQW`X=Ku
return M&5;Qeoiv
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criteria.setProjection(Projections.rowCount R0!qweGi@
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()).uniqueResult(); R^=)Ucj
} (ON_(MN
}, true); j.L`@
return count.intValue(); *l-(tp5
} )FfJ%oT}
} NhDM h8=$^
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