Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 -~HlME*~f
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 CKTD27})
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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 (pjmE7`"P
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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 Mlpq2I_x
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分页支持类: ?ExfxR!~
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java代码: [^gSWU
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package com.javaeye.common.util; tc{23Rf%
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import java.util.List; ;D/'7f7.}
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publicclass PaginationSupport { Oz9k.[j(
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publicfinalstaticint PAGESIZE = 30;
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privateint pageSize = PAGESIZE; &-+&`h|s
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privateList items;
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privateint totalCount; \]J"e%
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privateint[] indexes = newint[0]; >?e*;f$VdJ
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privateint startIndex = 0; zck)D^,aO
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public PaginationSupport(List items, int B>47Ic
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totalCount){ j)F~C8*
setPageSize(PAGESIZE); y&__2t^u
setTotalCount(totalCount); rMlbj2T
setItems(items); 73xI8
setStartIndex(0); qrX6FI
} ,75,~
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public PaginationSupport(List items, int y+:<
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totalCount, int startIndex){ k5xirB_
setPageSize(PAGESIZE); N&>D/Z;"
setTotalCount(totalCount); K0I-7/L
setItems(items); )kUq2-r
setStartIndex(startIndex); ?qK:P
} 3!$rp- !<)
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public PaginationSupport(List items, int 103Ik6.o
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totalCount, int pageSize, int startIndex){ Ar'5kPzY>
setPageSize(pageSize); GV[[[fu
setTotalCount(totalCount); rbtPG=t_R
setItems(items); WJ9u3+
setStartIndex(startIndex); hrAI@.Bo
} \O/=g6w|t}
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publicList getItems(){ hG;u8|uT^i
return items; V
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} 2=3iA09px
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publicvoid setItems(List items){ Vk_L*lcN
this.items = items; (~#PzE:
} zu|pL`X
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publicint getPageSize(){ Q'=!1^&
return pageSize; aVtwpkgZ
} R\+$^G}#6
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publicvoid setPageSize(int pageSize){ yz+r@I5
this.pageSize = pageSize; ?)PcYrV
} uw<Ruy
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publicint getTotalCount(){ Y.C*|p#
return totalCount; LQQhn{[D
} ):[[Ch_
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publicvoid setTotalCount(int totalCount){ TM RXl.1
if(totalCount > 0){ G![1+2p:Tq
this.totalCount = totalCount; \m.{^Xd~
int count = totalCount / 0bd.ess
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pageSize; ?D~uR2+Z
if(totalCount % pageSize > 0) PHOW,8)dZh
count++; WMC6dD_6e
indexes = newint[count]; kB:R-St
for(int i = 0; i < count; i++){ eX$Biv1N
indexes = pageSize * Sn+Yi
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} }z*p2)v`
}else{ R`<E3J\*
this.totalCount = 0; @F1pu3E
} bBQp:P?E
} w5nRgdboy!
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publicint[] getIndexes(){ RcE%?2lD
return indexes; ]zm6;/S
} 2-CK:)n/#
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publicvoid setIndexes(int[] indexes){ jW*A(bK8:
this.indexes = indexes; nAYjSE
} /[-hJ=<Yb
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publicint getStartIndex(){ ~& l`"
return startIndex; \E30.>%,
} {!4%Z9G
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publicvoid setStartIndex(int startIndex){ bd9c/>&
if(totalCount <= 0) s0h)~z
this.startIndex = 0; 0'<S7?~|
elseif(startIndex >= totalCount) $pKS['J0
this.startIndex = indexes BZBsE
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[indexes.length - 1]; g?`J ,*y
elseif(startIndex < 0) I
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this.startIndex = 0; Nf~<xK
else{ -Z@p
this.startIndex = indexes O| 2Q-
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[startIndex / pageSize]; ppYz~ {"r
} r3-3*_
} i>~?XVU
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publicint getNextIndex(){ :z:Blp>nK/
int nextIndex = getStartIndex() + Mc6y'w
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pageSize; g,;MV7yE
if(nextIndex >= totalCount) qRFN@ID$
return getStartIndex(); ev3x*}d0
else wfdFGoy(
return nextIndex; F~Li.qF
} We ->d |=
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publicint getPreviousIndex(){ t&xx-4
int previousIndex = getStartIndex() - C/bttd
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pageSize; fin15k
if(previousIndex < 0) w9FI*30
return0; 3%} Ma,
else cm]]9z_<
return previousIndex; gr;M
} NR*SEbUU*
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} QJ>>&`{,
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抽象业务类 J-}NFWR;t
java代码: r)t^qhn
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/** -:,h8JyMP
* Created on 2005-7-12 r>Ln*R,9D
*/ I ?>#neHc6
package com.javaeye.common.business; <%z/6I
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import java.io.Serializable; q
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import java.util.List; c&++[
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import org.hibernate.Criteria; 3\{Sf /#
import org.hibernate.HibernateException; ,B2-'O
import org.hibernate.Session; kslN_\
import org.hibernate.criterion.DetachedCriteria; ;i9CQ0e?
import org.hibernate.criterion.Projections; a3;.{6el)H
import V|AE~R^
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org.springframework.orm.hibernate3.HibernateCallback; {UcItLjY
import k@L~h{`Mc\
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org.springframework.orm.hibernate3.support.HibernateDaoS 'm|m+K83
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upport; .6K>"
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import com.javaeye.common.util.PaginationSupport; >-P0wowL
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public abstract class AbstractManager extends 'T[zh#v>S
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HibernateDaoSupport { sD8S2
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privateboolean cacheQueries = false; o(P:f)B
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privateString queryCacheRegion; g1~I*!p
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publicvoid setCacheQueries(boolean j;)6uia*A
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cacheQueries){ MbfzGYA2~
this.cacheQueries = cacheQueries; eEQ[^i
}
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publicvoid setQueryCacheRegion(String `dP+5u!
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queryCacheRegion){ D.(G 9H
this.queryCacheRegion = Rs`a@Fn
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queryCacheRegion; YJ$ewK4E#.
} B5:g{,C
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publicvoid save(finalObject entity){ yf) `jPM1<
getHibernateTemplate().save(entity); -`OR6jd
} 91H0mP>ki
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publicvoid persist(finalObject entity){ h
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getHibernateTemplate().save(entity); ]ufW61W6Ci
} Db(_T8sU
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publicvoid update(finalObject entity){ 1v&Fo2ML
getHibernateTemplate().update(entity); ?Z>.G{Wm@
} "!tw
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publicvoid delete(finalObject entity){ X:lPWz!7{
getHibernateTemplate().delete(entity); Net)l@IB]
} W(h8!}
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publicObject load(finalClass entity, N-`;\
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finalSerializable id){ ,dx)rZ*
return getHibernateTemplate().load aMQjoamz
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