Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 JttDRNZAU
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 =$)M-;6
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 MYjc6@=cR
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 kD;pj3o&"2
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分页支持类: *n EkbI/
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java代码: ^s7!F.OC
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package com.javaeye.common.util; G'G8`1Nj
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import java.util.List; :(X3?%
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publicclass PaginationSupport { 9!uiQ
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publicfinalstaticint PAGESIZE = 30; 8vR_WHsL
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privateint pageSize = PAGESIZE; < z2wt
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privateList items; lh"*$.j-
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privateint totalCount; jO&*E'pk
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privateint[] indexes = newint[0]; LO{Axf%
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privateint startIndex = 0; V9v20iX
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public PaginationSupport(List items, int PT6]qS'1
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totalCount){ V3t#kv
setPageSize(PAGESIZE); qy3@>
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setTotalCount(totalCount); /qX?ca1_4^
setItems(items); a9.yuSzL
setStartIndex(0); %A$&9c%
}
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public PaginationSupport(List items, int |]*3En:
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totalCount, int startIndex){ 06S
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setPageSize(PAGESIZE); pZ.b
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setTotalCount(totalCount); V]p{jLG
setItems(items); ;KlYiu
setStartIndex(startIndex); jb.H[n,\
} v4n< G-
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public PaginationSupport(List items, int gYB!KM *v
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totalCount, int pageSize, int startIndex){ 5G f@n/M"
setPageSize(pageSize); \l~^dn}
setTotalCount(totalCount); vQljxRtW
setItems(items); gJ
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setStartIndex(startIndex); ^viabkf C
} e7RgA1
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publicList getItems(){ XMrk2]_
return items; D:1@1Jr
} 6O7s^d&K
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publicvoid setItems(List items){ DiFYVR<@
this.items = items; : {p'U2
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publicint getPageSize(){ ("9bV8:@B
return pageSize; =,6H2ew
} SVe]2ONd
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publicvoid setPageSize(int pageSize){ : ky`)F`
this.pageSize = pageSize; .XJ'2yKof
} b@Ej$t&
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publicint getTotalCount(){ ytZ o0pad
return totalCount; &93{>caf+
} YOl$sgg}
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publicvoid setTotalCount(int totalCount){ h?mDtMCw2
if(totalCount > 0){ H;/do-W[
this.totalCount = totalCount; >JpBX+]5m
int count = totalCount / 2q~.,vpP
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pageSize; $.PRav
if(totalCount % pageSize > 0) !HY^QK
count++; xfYKUOp/
indexes = newint[count]; m2PUU/8B/
for(int i = 0; i < count; i++){ ]auvtm-[
indexes = pageSize * ?qgQ)#6
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} I!lDKS,b
}else{ yHeL&H
this.totalCount = 0; 0<,{poMM
} )DgXsT
} pY31qhoZ.
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publicint[] getIndexes(){ 19E(Hsz
return indexes; ={g)[:(C.
} [LYO'-g^F#
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publicvoid setIndexes(int[] indexes){ gRLt0&Q~
this.indexes = indexes; r w?wi}}gn
} 3&hR#;,"X
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publicint getStartIndex(){ Z)@vJZ*7(
return startIndex; Y2`sL,'h
} m<CrkKfpG
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publicvoid setStartIndex(int startIndex){ AyE*1 FD
if(totalCount <= 0) 2js/>L0
this.startIndex = 0; JRl=j2z
elseif(startIndex >= totalCount) JW>k8QjyN
this.startIndex = indexes S\GWMB!oF
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[indexes.length - 1]; csP4Oq\g[
elseif(startIndex < 0) S;~eI8gQ"
this.startIndex = 0; XZE(& (s
else{ dxeiN#(XT
this.startIndex = indexes Kb; *"@LX
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[startIndex / pageSize]; l.}PxZ
} R"cQyG4
} 9Yt|Wj
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publicint getNextIndex(){ g[} L
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int nextIndex = getStartIndex() + v=k+MvX
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pageSize; UC`h o%OBF
if(nextIndex >= totalCount) <B6md
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return getStartIndex(); IdmP!(u
else k4{!h?h
return nextIndex; 7y
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} U$y9f
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publicint getPreviousIndex(){ qiz(k:\o
int previousIndex = getStartIndex() - #9GfMxH
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pageSize; Xt$qjtVM
if(previousIndex < 0) u`v&URM
return0; c7CYulm
else
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return previousIndex; ct\msG }b:
} m*
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抽象业务类 4U dk#
java代码: (BY 0b%^
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/** YeCnk:_ kg
* Created on 2005-7-12 `,4yGgD!4
*/ b_sasZo
package com.javaeye.common.business; :2j`NyLI.
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import java.io.Serializable; M"*NV(".g
import java.util.List; Ucv7`W
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import org.hibernate.Criteria; A{>w5T
import org.hibernate.HibernateException; #~p;s>
import org.hibernate.Session; kk5&lak2V
import org.hibernate.criterion.DetachedCriteria; 8s22VL
import org.hibernate.criterion.Projections; @95p [
import )ThNy:4
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org.springframework.orm.hibernate3.HibernateCallback; >V8!OaY5n
import 0V6, &rTF
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org.springframework.orm.hibernate3.support.HibernateDaoS -`8@
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upport; qt.4dTd:_
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import com.javaeye.common.util.PaginationSupport; R:n|1]*f3X
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public abstract class AbstractManager extends W'"hjQ_
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HibernateDaoSupport { {;Hg1=cm
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privateboolean cacheQueries = false; l\0PwD
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privateString queryCacheRegion; Q1Qw45$
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publicvoid setCacheQueries(boolean {8mJ<b>VA
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cacheQueries){ lI46
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this.cacheQueries = cacheQueries; +s_a{iMVP
} ommW
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publicvoid setQueryCacheRegion(String -J!n 7
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queryCacheRegion){ \RDqW+,
this.queryCacheRegion = Q65M(x+oy
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queryCacheRegion; ug{sQyLN
} [Y@}{[q5
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publicvoid save(finalObject entity){ &:C[
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getHibernateTemplate().save(entity); "r;cH5 3
} Dd0yQgCu
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publicvoid persist(finalObject entity){ vR#MUKfh
getHibernateTemplate().save(entity); Y#): 1C1
} fFC9:9<
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publicvoid update(finalObject entity){ T+0z.E!~I
getHibernateTemplate().update(entity); Gyy4)dP
} B4*,]lS?
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publicvoid delete(finalObject entity){ )2Q0NbDn
getHibernateTemplate().delete(entity); qc'KQ5w7!
} $0{h Uex
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publicObject load(finalClass entity, q 7W7sw
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finalSerializable id){ K\RMX?YsP
return getHibernateTemplate().load zB7^L^Y
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(entity, id); dqU)(T=C
} Z[RifqaBby
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publicObject get(finalClass entity, g
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finalSerializable id){ N>s3tGh
return getHibernateTemplate().get M_?B*QZJI
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(entity, id); /ml+b8@
} 0|hOoO]?q&
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publicList findAll(finalClass entity){ KLj/,ehD
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return getHibernateTemplate().find("from FAGi`X<L
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" + entity.getName()); zEE:C|50
} q` |E9
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publicList findByNamedQuery(finalString a[=B?Bd
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namedQuery){ kmJ<AnK
return getHibernateTemplate ldKLTO*&
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().findByNamedQuery(namedQuery); =(<7o_gJ
} :W'.SRD
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publicList findByNamedQuery(finalString query, {v3@g[:|
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finalObject parameter){ ^sJp!hi4=)
return getHibernateTemplate NUi&x