Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 e|`&K"fnq
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 JV@>dK8
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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 -IPc;`<
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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 sx6`
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分页支持类: +_+}^Nf]Y3
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java代码: k+&| *!j
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package com.javaeye.common.util; 8G9V8hS1#B
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import java.util.List; 1<lLE1fk
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publicclass PaginationSupport { <#:"vnm$j
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publicfinalstaticint PAGESIZE = 30; U|,VH-#
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privateint pageSize = PAGESIZE; <MY_{o8d
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privateList items; #[IQmU23
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privateint totalCount; ?!Y2fK=h0
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privateint[] indexes = newint[0]; "xw2@jGpG
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privateint startIndex = 0; N1_nBQF )
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public PaginationSupport(List items, int MSw/_{
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totalCount){ *&LVn)@[`
setPageSize(PAGESIZE); f ^z7K
setTotalCount(totalCount); (ZDRjBth[
setItems(items); xZBmQ:s',S
setStartIndex(0); e%"L79Of6)
} ceAK;v
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public PaginationSupport(List items, int d!!5'/tmS
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totalCount, int startIndex){ X=-pNwO
setPageSize(PAGESIZE); |Zz3X
setTotalCount(totalCount); "{|9Yis=
setItems(items); r%F{1.
setStartIndex(startIndex); C%l~qf1n
} Rom|Bqo;
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public PaginationSupport(List items, int b bX2D/
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totalCount, int pageSize, int startIndex){ 6MF%$K3
setPageSize(pageSize); tFXG4+$D
setTotalCount(totalCount); A:>G: X5t
setItems(items); jPhOk>m
setStartIndex(startIndex); 9J*m!-hOY
} (m})V0/`
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publicList getItems(){ zkB_$=sbn#
return items; SxNs
} ^qGH77#z
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publicvoid setItems(List items){ C^]bXIb
this.items = items; ,Epg&)wC]
} I
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publicint getPageSize(){ W.{#Pg1Da
return pageSize; XswEAz0=
} (q*Za
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publicvoid setPageSize(int pageSize){ Gb\}e}TB[
this.pageSize = pageSize; p<tj6O
} { 6*h';~
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publicint getTotalCount(){ TAIcp*)ZM
return totalCount; Jy{A1i@4~s
} >(p "!
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publicvoid setTotalCount(int totalCount){ @zW'!Ol
if(totalCount > 0){ d2Bn`VI
this.totalCount = totalCount; e$fxC-sZ
int count = totalCount / ="z\
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pageSize; g.Z>9(>;Y
if(totalCount % pageSize > 0) ~\(U&2t
count++; r)q6^|~47
indexes = newint[count]; j'I$F1>Te
for(int i = 0; i < count; i++){ Xb5n;=)
indexes = pageSize * h{VCx#!]
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} ^3 F[^#"
}else{ _z#zF[%
this.totalCount = 0; iE0A-;:5
} 32:q'
} 8it|yK.G@&
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publicint[] getIndexes(){ [_#9PH33
return indexes; O\-cLI<h2
} Kw+?Lowp
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publicvoid setIndexes(int[] indexes){ s+$l.aIO!
this.indexes = indexes; %HpTQ
} fOF02WP^
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publicint getStartIndex(){ #92:h6
return startIndex; [89#8|+
} (Rve<n6{A
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publicvoid setStartIndex(int startIndex){ m&EwX ^1-
if(totalCount <= 0) s-J>(|
this.startIndex = 0; Z
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elseif(startIndex >= totalCount) D/"[/!
this.startIndex = indexes Zm4IN3FGLv
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[indexes.length - 1]; S9t_2%e
elseif(startIndex < 0) 1BmevEa)
this.startIndex = 0; i\XOk!
else{ p9y
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this.startIndex = indexes {|O8)bW'
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[startIndex / pageSize]; pdngM8n
} rc<^6HqD
} r\.1=c#"bP
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publicint getNextIndex(){ { %vX/Ek
int nextIndex = getStartIndex() + j]6Z*AxQ
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pageSize; 4t|ril``]
if(nextIndex >= totalCount) P*BA
return getStartIndex();
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else tK`sVsm>
return nextIndex; D\jRF-z
} .R#p<"$I
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publicint getPreviousIndex(){ G!C2[:[g
int previousIndex = getStartIndex() - f
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pageSize; J$%mG*Y(
if(previousIndex < 0) ?kI-o0@O.
return0; @TdPeTw\
else By]XD~gcP
return previousIndex; kOmTji7
} [-x~Q[
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}
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抽象业务类 h
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java代码: 5? &k? v@
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/** CS)&A4`8
* Created on 2005-7-12 ;EP 7q[
*/ J^R))R=
package com.javaeye.common.business; s/Fc7V!;
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import java.io.Serializable; Py^F},?J
import java.util.List; +y! dU{L^
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import org.hibernate.Criteria; gYn1-/Z>I
import org.hibernate.HibernateException; rRRiqmq
import org.hibernate.Session; 3k`"%R.H
import org.hibernate.criterion.DetachedCriteria; idMb}fw>
import org.hibernate.criterion.Projections; 17I{_C
import @Y 1iEL%\y
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org.springframework.orm.hibernate3.HibernateCallback; &^Zo}F2V
import D}XyT/8G3
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org.springframework.orm.hibernate3.support.HibernateDaoS mk2T
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upport; (YVl5}V
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import com.javaeye.common.util.PaginationSupport; TRL4r_
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public abstract class AbstractManager extends hZ Gr/5f
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HibernateDaoSupport { s3HwBA
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privateboolean cacheQueries = false; kj~)#KDN
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privateString queryCacheRegion; BG_m}3j
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publicvoid setCacheQueries(boolean }@J&yrqg
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cacheQueries){ RIJ+]uir4
this.cacheQueries = cacheQueries; $v#Q'?jE
} JR|yg=E
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publicvoid setQueryCacheRegion(String Wp/!;
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queryCacheRegion){ R/R[r> 1)6
this.queryCacheRegion = \[Op:^S
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queryCacheRegion; ol^V@3[<
}
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publicvoid save(finalObject entity){ X+)68
getHibernateTemplate().save(entity); zhY VMQ
} s\_-` [B0
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publicvoid persist(finalObject entity){ tQ_;UQlX
getHibernateTemplate().save(entity); {:xINQ=}D
} }`{>]2
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publicvoid update(finalObject entity){ hSSF]
getHibernateTemplate().update(entity); 0kS[`a(}J
} M;OY+|uA
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publicvoid delete(finalObject entity){ I~H:-"2
getHibernateTemplate().delete(entity); pXL_`=3Q
} Q%KH^<
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publicObject load(finalClass entity, W -<E p<7{
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finalSerializable id){ G,9osTt/
return getHibernateTemplate().load 4SCb9|/Q
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(entity, id); 5<w"iqZ\?N
} uNZJNrV%
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publicObject get(finalClass entity, ]IMBRZQqb
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finalSerializable id){ y K)7%j!
return getHibernateTemplate().get 3GUO
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(entity, id); v^2K=f[nE
} GQhzQM1HS
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publicList findAll(finalClass entity){ =;!C7VS
return getHibernateTemplate().find("from V9z/yNo
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" + entity.getName()); i`Fg kABw
} |B<+Y<)f^
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publicList findByNamedQuery(finalString *X8<hYKZq
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namedQuery){ lfG]^id'
return getHibernateTemplate tX$%*Uy
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().findByNamedQuery(namedQuery); KGdL1~
} @;2,TY>Di
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publicList findByNamedQuery(finalString query, Os'
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finalObject parameter){ Lo
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return getHibernateTemplate KArt4+31
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().findByNamedQuery(query, parameter); W4Rs9NA}
} ; S7
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publicList findByNamedQuery(finalString query, -'3~Y
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finalObject[] parameters){ Zm,<