Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 )`a R?_
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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 $!t! =
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 >:Ec
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分页支持类: gi8kYHldH
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java代码: x<].mx
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package com.javaeye.common.util; 6K&V}
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import java.util.List; f7L |Jc
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publicclass PaginationSupport { ^,50]uX_
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publicfinalstaticint PAGESIZE = 30; qe0@tKim
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privateint pageSize = PAGESIZE; /#HY-b
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privateList items; L/shF}<
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privateint totalCount; a)xN(xp##
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privateint[] indexes = newint[0]; l\bBc,%jt
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privateint startIndex = 0; SU:Cm:$
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public PaginationSupport(List items, int WZZD
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totalCount){ nWh?zf#{
setPageSize(PAGESIZE); Yq.Omr!
setTotalCount(totalCount); yRAb
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setItems(items); {3?g8e]zr
setStartIndex(0); E:%%Dm
} A%Ao yy4E
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public PaginationSupport(List items, int Z#0z #M`
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totalCount, int startIndex){ ^rI&BN@S
setPageSize(PAGESIZE); 9yQ[ *
setTotalCount(totalCount); b"J(u|Du`
setItems(items); FQ[::*-
setStartIndex(startIndex); Z0x N9S
} :f`1
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public PaginationSupport(List items, int BPW:W }
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totalCount, int pageSize, int startIndex){ OUD<+i,
setPageSize(pageSize); U*zjEY:A
setTotalCount(totalCount); (FBKP#x)^
setItems(items); 7Y_S%B:F
setStartIndex(startIndex); _M7AQ5
} p%n}a%%I
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publicList getItems(){ 9nB:=`T9
return items; J,k{Bm
} 1w35H9\g
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publicvoid setItems(List items){
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this.items = items; C!:\H<gI
} >2_J(vm>
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publicint getPageSize(){ M6?* \9E
return pageSize; !X8:#a(
} a7Z PV1k
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publicvoid setPageSize(int pageSize){ k;"=y)@o
this.pageSize = pageSize; h:l\kr|9
} >RRb8=[J
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publicint getTotalCount(){ ]NN9FM.2b/
return totalCount; gXG1w>
} IF uz'
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publicvoid setTotalCount(int totalCount){ ;]|Z8#s
if(totalCount > 0){ )t=Cj?5
this.totalCount = totalCount; 2 3 P7~S
int count = totalCount / WJ=^r@Sf
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pageSize; R}*e% EG/
if(totalCount % pageSize > 0) %3Y&D]
count++; 55fV\3F|R
indexes = newint[count]; C^.:{
for(int i = 0; i < count; i++){ )Nk^;[
indexes = pageSize * MOdodyG
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} 7`
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}else{ m"NZ; *d '
this.totalCount = 0; |nB2X;K5~
} nKch_Jb
} :v=Yo
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publicint[] getIndexes(){ M&xfQNE
return indexes; oC"c%e8
} *l^h;RSx
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publicvoid setIndexes(int[] indexes){ 10{ZW@!7
this.indexes = indexes; +:;r} 7Zh
} GKSfr8US4
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publicint getStartIndex(){ 2BEF8o]Np
return startIndex; 90&ld :97
} )9,9yd~SI
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publicvoid setStartIndex(int startIndex){ /`3<@{D
if(totalCount <= 0) 36e!je
this.startIndex = 0; #"=_GA^.{
elseif(startIndex >= totalCount) s7#w5fe
this.startIndex = indexes k?KKb
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[indexes.length - 1]; z`]'~
elseif(startIndex < 0) x<4-Q6'{S
this.startIndex = 0; nJNdq`y2
else{ TdlF~ca|
this.startIndex = indexes Oe5=2~4O
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[startIndex / pageSize]; ?dY}xE
} TIYI\/a\;
} YD 1u
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publicint getNextIndex(){ UF3WpA
int nextIndex = getStartIndex() + aPWlV= oG
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pageSize; ;"Q{dOvp
if(nextIndex >= totalCount) ;J Fy
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return getStartIndex(); xQ=[0!p+
else Tn8Z2iC
return nextIndex; FT!|YJz<K
} KFvNsqd
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publicint getPreviousIndex(){ *2Il{KOA^
int previousIndex = getStartIndex() - Ol"*(ea-TX
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pageSize; <H::{
if(previousIndex < 0) ;Z\jX[H
return0; % V/J6
else ]W-l1
return previousIndex; e?rp$kq7
} nJ<h}*[
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抽象业务类 <E[X-S%&
java代码: s~W:N.}*
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/** b`)^Ao:
* Created on 2005-7-12 BrcT`MM[(=
*/ I"eXoqh
package com.javaeye.common.business; rZm|7A)i
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import java.io.Serializable; why;1z>V
import java.util.List; sN.h>bd
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import org.hibernate.Criteria; C(qqGK{
import org.hibernate.HibernateException; PBc.}TSGj
import org.hibernate.Session; x<W`2Du
import org.hibernate.criterion.DetachedCriteria; Y;JV9{j
import org.hibernate.criterion.Projections; maW,YOyRN
import R]L|&{
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org.springframework.orm.hibernate3.HibernateCallback; u|t<f`ze
import F$T@OT6
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org.springframework.orm.hibernate3.support.HibernateDaoS ZbD_AP
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upport; ppH5>Y
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import com.javaeye.common.util.PaginationSupport; xcz[w}{eEq
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public abstract class AbstractManager extends !B_i~Rmg
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HibernateDaoSupport { xFvDKW)_X7
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privateboolean cacheQueries = false; L8sHG$[
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privateString queryCacheRegion; @5jJoy(mX@
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publicvoid setCacheQueries(boolean \}[{q
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cacheQueries){ *<Yn
this.cacheQueries = cacheQueries; /<,LM8n
} @LZ'Qc
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publicvoid setQueryCacheRegion(String #/!fLU@
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queryCacheRegion){ XG2&_u&
this.queryCacheRegion = frV* +
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queryCacheRegion; Qvo(2(
} BBnW0vAZ*
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publicvoid save(finalObject entity){ zG)XB*c
getHibernateTemplate().save(entity); j}}:&>;
} |eH>55 b
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publicvoid persist(finalObject entity){ IO3`/R-
getHibernateTemplate().save(entity); ?\[2Po]n
} #'m&<g,
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publicvoid update(finalObject entity){ ?`T<
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getHibernateTemplate().update(entity); :KY920/,
} r;m_@*]
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publicvoid delete(finalObject entity){ 2
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getHibernateTemplate().delete(entity); U,Py+c6
} Teq1VK3Hr
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publicObject load(finalClass entity, w;@DcX$]
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finalSerializable id){ n-iy;L^b
return getHibernateTemplate().load bV|(V>
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(entity, id); 4JF)w;X}
} =d07c
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publicObject get(finalClass entity, Q(Q.(
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finalSerializable id){ 7u8HcHl
return getHibernateTemplate().get
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(entity, id); `
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} ?S&pq?
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publicList findAll(finalClass entity){ &%3$zgvR
return getHibernateTemplate().find("from 7g@P$e]
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" + entity.getName()); *a}NRf}W
} fu3~W
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publicList findByNamedQuery(finalString AL*P2\8
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namedQuery){ kT|{5Kn&s
return getHibernateTemplate x0aPY;,N0
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().findByNamedQuery(namedQuery); ?1%/G<
} 8z,i/:
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publicList findByNamedQuery(finalString query, 'nH/Z 84
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finalObject parameter){ 1e=<df
return getHibernateTemplate xDtq@Rb}
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().findByNamedQuery(query, parameter); |.kYomJ
} [Y@?l]&