Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 PQaTS*0SXJ
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 KI9Pw]]{-
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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 9vRLM*9|
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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 >Na. C(DZ
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分页支持类: Uu7]`U l
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java代码: utck{]P
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package com.javaeye.common.util; wDvu2iC=
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import java.util.List;
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publicclass PaginationSupport { )@!fLAT
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publicfinalstaticint PAGESIZE = 30; }83
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privateint pageSize = PAGESIZE; ip?]&5s
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privateList items; Zh8\B)0unn
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privateint totalCount; lWRl
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privateint[] indexes = newint[0]; ;1&"]N%
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privateint startIndex = 0; L&6^(Bn
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public PaginationSupport(List items, int i*$+>3Q-
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totalCount){ 2/3yW.C
setPageSize(PAGESIZE); 1uw1(iL+
setTotalCount(totalCount); .=:f]fs
setItems(items); A;8kC}
setStartIndex(0); jU-LT8y:
} _|e&zr
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public PaginationSupport(List items, int )f3A\^
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totalCount, int startIndex){ dNR/|
setPageSize(PAGESIZE); G@P;#l`(D
setTotalCount(totalCount); nc1~5eo
setItems(items); <VZ43I
setStartIndex(startIndex); 0[UI'2
} n[>hJ6
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public PaginationSupport(List items, int > %KEMlKZ
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totalCount, int pageSize, int startIndex){ [pU(z'caS
setPageSize(pageSize); g=mKTk
setTotalCount(totalCount); 4}C
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setItems(items); e
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setStartIndex(startIndex);
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} < }K9 50
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publicList getItems(){ ;BuMzG:tmZ
return items; r(Sh
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publicvoid setItems(List items){ Tu-lc)
this.items = items; @95p [
} J4eU6W+ {
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publicint getPageSize(){ QyCrz{/
return pageSize; (+gTIcc
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} NrS+N;i
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publicvoid setPageSize(int pageSize){ tD`^qMua
this.pageSize = pageSize; }Bv1fbD4U
} XHv
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publicint getTotalCount(){ %3dc_YPS
return totalCount; $-/-%=
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publicvoid setTotalCount(int totalCount){ XOX$uLm
if(totalCount > 0){ 9 ] N{8
this.totalCount = totalCount; 0Y!"3bw|
int count = totalCount / wdj?T`4
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pageSize; 2XL^A[?
if(totalCount % pageSize > 0) z:S:[X0
count++; `IlhLv
indexes = newint[count]; +76'(@(1Y
for(int i = 0; i < count; i++){ SN)Czi#7
indexes = pageSize * mNC?kp
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}else{ Pg.JI:>2Ku
this.totalCount = 0; (,sz.
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} cFie;k
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publicint[] getIndexes(){ ()j)}F#Z`
return indexes; ,X|FyO(p
} \4qF3#
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publicvoid setIndexes(int[] indexes){ =W2.Nc
this.indexes = indexes; )0I-N)
} q=e;P;u
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publicint getStartIndex(){ V|A.M-XLv4
return startIndex; 8m
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publicvoid setStartIndex(int startIndex){ D(Z#um8n
if(totalCount <= 0) :*g$@T
this.startIndex = 0; 5M> p%/
elseif(startIndex >= totalCount) t,TlW^-
this.startIndex = indexes g_ep
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[indexes.length - 1]; tYMr
elseif(startIndex < 0) OLF6["0Rn
this.startIndex = 0; \1-lda
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this.startIndex = indexes dH0>lV
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[startIndex / pageSize]; 8aQTm-{m
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publicint getNextIndex(){ %;]/Z%!
int nextIndex = getStartIndex() + z1tD2jL _
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pageSize; c>c3qjWY/
if(nextIndex >= totalCount) nzxHd7NIZ
return getStartIndex(); %1cxZxGT
else o9ys$vXt*
return nextIndex; A"DGn
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})!-
publicint getPreviousIndex(){ 9(X~
int previousIndex = getStartIndex() - aiX4;'$x!
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pageSize; 08@4u
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if(previousIndex < 0) .rg "(I
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else J7wwM'\
return previousIndex; gzK/ l:
} Gn6\n'r0
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} VwBw!,%Ab
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抽象业务类 ;=%cA#}_0
java代码: ~D/Lo$K"
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/** ZHwN3
* Created on 2005-7-12 |]:6IuslJ
*/ Pvv7|AV
package com.javaeye.common.business; _;BNWH
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import java.io.Serializable; / E!6]b/
import java.util.List; _;x` 6LM
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import org.hibernate.Criteria; kSJ;kz,_
import org.hibernate.HibernateException; "a _S7K
import org.hibernate.Session; Zq:
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import org.hibernate.criterion.DetachedCriteria; W }Ll)7(|T
import org.hibernate.criterion.Projections; -NzOX"V]3
import !}`[s2ji
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org.springframework.orm.hibernate3.HibernateCallback; ]9<H[5>$R
import .GYdC'
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org.springframework.orm.hibernate3.support.HibernateDaoS nJgN2Z
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upport; Pr1OQbg]8
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import com.javaeye.common.util.PaginationSupport; DjZTr}%q
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public abstract class AbstractManager extends KKg\n^
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HibernateDaoSupport { K)Ya%%6[U#
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privateboolean cacheQueries = false; =L"I[
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privateString queryCacheRegion; Z0~,cO8~
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publicvoid setCacheQueries(boolean H11@ DQ6
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cacheQueries){ Q&&=:97d
this.cacheQueries = cacheQueries; Zic:d-Q47
} {poTA+i
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publicvoid setQueryCacheRegion(String H?=[9?1wI5
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queryCacheRegion){ ][\ uH|
this.queryCacheRegion = {j[*:l0Ui
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queryCacheRegion; 4&L,QSJ V
} A6;[r #C
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publicvoid save(finalObject entity){ pXNH
getHibernateTemplate().save(entity); aO:A pOAO
} xy)W_~Mk
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publicvoid persist(finalObject entity){ '7]9q#{su
getHibernateTemplate().save(entity); 5 "x1Pln
} obX2/
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publicvoid update(finalObject entity){ g1UQ6Oa
getHibernateTemplate().update(entity); ? a?]
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} 0KZsWlD:L
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publicvoid delete(finalObject entity){ NUi&x