Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 9D,/SZ-v
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 #2*6esP
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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 MR}h}JEx0
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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 9`Zwa_Tni
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分页支持类: ~tB#Q6`nB
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java代码: TS49{^d$
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package com.javaeye.common.util; 2!Sl!x+i\'
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import java.util.List; u=f}t=3
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publicclass PaginationSupport { |$G|M=*LN
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publicfinalstaticint PAGESIZE = 30; R@A"U[*
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privateint pageSize = PAGESIZE; }2.0e5[
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privateList items; _0h)O
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privateint totalCount; %[WOQ.Sh
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privateint[] indexes = newint[0]; SI9PgC
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privateint startIndex = 0; [iUy_ C=qp
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public PaginationSupport(List items, int ='Fh^]*5
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totalCount){
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setPageSize(PAGESIZE); m,^UD{
setTotalCount(totalCount); X-j3=8wPM
setItems(items); @@"abhT
setStartIndex(0); nNpXkI:
} k<QZ_*x}G
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public PaginationSupport(List items, int 4gh`
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totalCount, int startIndex){ 0P^&{ek+)
setPageSize(PAGESIZE); >?|c>HGX
setTotalCount(totalCount); dLtmG:II
setItems(items); :b"&Rc&s.
setStartIndex(startIndex); 5Mz6/&`
} t-?#x
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public PaginationSupport(List items, int eZMfn$McJv
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totalCount, int pageSize, int startIndex){ =i:,")W7=
setPageSize(pageSize); Ws;X;7tS
setTotalCount(totalCount); mu$rG3M
setItems(items); K:54`UJ
setStartIndex(startIndex); <|1Kh ygv
} )*nZ6Cg'
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publicList getItems(){ 'H-hp
return items; YYF.0G}
} 0S&C[I
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publicvoid setItems(List items){ _3zJ.%
this.items = items; Iwe
} i0'g$
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publicint getPageSize(){ =k##*%
return pageSize; Z. ,pcnaQb
} !dOpLUh l
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publicvoid setPageSize(int pageSize){ k|3hs('y|
this.pageSize = pageSize; cQrXrij;!
} l0=VE#rFl
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publicint getTotalCount(){ ', P_a,\
return totalCount; 9;fs'R
} TF~cDn
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publicvoid setTotalCount(int totalCount){ Qt.|YB8
if(totalCount > 0){ |>Pz#DCy
this.totalCount = totalCount; <$Djags,F
int count = totalCount / d"OYq
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pageSize; \]0+J
if(totalCount % pageSize > 0) cK\'D
count++; -FQc_k?VF
indexes = newint[count];
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for(int i = 0; i < count; i++){ z-^/<u1p
indexes = pageSize * SXx4^X
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} ;E0x#JUrw
}else{ :
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this.totalCount = 0; GjyTM
} z[l_<`J$9
} ^f9>tI{
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publicint[] getIndexes(){ #6mr'e1
return indexes; >OKc\m2%Q
} L'O=;C"f
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publicvoid setIndexes(int[] indexes){ R~BFZF>:
this.indexes = indexes; y=zs6HaS
} .p%V]Ka
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publicint getStartIndex(){ Ls'8
return startIndex; 7>f)pfLM
} qRXHaQi@9
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publicvoid setStartIndex(int startIndex){ c=aVYQ"2
if(totalCount <= 0) [a7S?%>Bh
this.startIndex = 0; I5E+=.T*ar
elseif(startIndex >= totalCount) 7%W@Hr,%F
this.startIndex = indexes ?ZYj5[op,H
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[indexes.length - 1]; uTrQ<|}#
elseif(startIndex < 0) |WSmpuf
this.startIndex = 0; g{JH5IZ~
else{ l"%WXi"X
this.startIndex = indexes 99~ZZG
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[startIndex / pageSize]; 4KY@y?H g
} e?WI=Og
} P_(<?0l
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publicint getNextIndex(){
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int nextIndex = getStartIndex() + |;R-q8
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pageSize; m Gx{Vpt
if(nextIndex >= totalCount) g_?bWm4br
return getStartIndex(); W=4|ahk$
else M1I4Ot
return nextIndex; LG'1^W{a
} Tj=@5lj0
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publicint getPreviousIndex(){ =cxG4R1x
int previousIndex = getStartIndex() - Vu,:rPqI
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pageSize; Hnf?`j>
if(previousIndex < 0) Tvw(Sq};
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else 0gr#<(
return previousIndex; c[EG
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} XQcE
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} gXB&Sgjo
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抽象业务类 1wW4bg 5
java代码: mWuhXY^Q
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/** 9 'IDbe{
* Created on 2005-7-12 ar@ysBy
*/ M \>5" ,0
package com.javaeye.common.business; (ewcj\l4*
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import java.io.Serializable; C12y_E8Un
import java.util.List; j4h?"
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import org.hibernate.Criteria; Y4*?QBYA
import org.hibernate.HibernateException; *'R2Lo<C
import org.hibernate.Session; I#|ib
import org.hibernate.criterion.DetachedCriteria; PAu/iqCH
import org.hibernate.criterion.Projections; QM'>)!8
import s$VLVT*6
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org.springframework.orm.hibernate3.HibernateCallback; <@=w4\5j9
import [q!)Y:|u_>
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org.springframework.orm.hibernate3.support.HibernateDaoS =4Wjb
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upport; YHr<`Q</
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import com.javaeye.common.util.PaginationSupport; iPrAB*
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public abstract class AbstractManager extends JDB Ni+t
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HibernateDaoSupport { .vXe}%
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privateboolean cacheQueries = false; [
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privateString queryCacheRegion; XwdehyPhT2
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publicvoid setCacheQueries(boolean |HK/*B
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cacheQueries){ 1PT0<C-
this.cacheQueries = cacheQueries; 3(La)|k
}
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publicvoid setQueryCacheRegion(String {NV=k%MTmi
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queryCacheRegion){ xr-v"-
this.queryCacheRegion = j es[a
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queryCacheRegion; '>r"+X^W
} 1(WNrVm;
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publicvoid save(finalObject entity){ aD8r:S\
getHibernateTemplate().save(entity); Mhze!!
} 9$P*fx&m
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publicvoid persist(finalObject entity){ )F4P-u
getHibernateTemplate().save(entity); 6B>H75S+H
} /h73'"SpDy
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publicvoid update(finalObject entity){ Fs)m;C
getHibernateTemplate().update(entity); .=4k'99,
} a,*~wmg
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publicvoid delete(finalObject entity){ UI.>BZ6}
getHibernateTemplate().delete(entity); w.\#!@kZ!
} C\p _
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publicObject load(finalClass entity, :i:M7 }r
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finalSerializable id){ "+:IA|1wD
return getHibernateTemplate().load Q@/358.LA
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(entity, id); l@ W?qw
} \Lu] %}
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publicObject get(finalClass entity, |cUBS)[)X
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finalSerializable id){ _-/<