Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 g)nT]+&
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 tgC)vZ&a
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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 qkBCI,X_Y
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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 eDY)i9"W
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分页支持类: FTWjIa/[
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java代码: remRmY?
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package com.javaeye.common.util; Lm*PHG
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import java.util.List; dz1kQzOU*
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publicclass PaginationSupport { cFr`9A\-n
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publicfinalstaticint PAGESIZE = 30; m(IyW734I
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privateint pageSize = PAGESIZE; Nf%/)Tk
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privateList items; =b#:j:r
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privateint totalCount; | z?c>.
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privateint[] indexes = newint[0]; Y6m:d&p=}
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privateint startIndex = 0; \k5
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public PaginationSupport(List items, int rp=Y }
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totalCount){ Q^):tO]!Ma
setPageSize(PAGESIZE); L| ;WE=
setTotalCount(totalCount); TT={>R[B
setItems(items); 7G%:ckg
setStartIndex(0); i5SDy(?r
} " -S@R=bi
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public PaginationSupport(List items, int Sl'{rol'
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totalCount, int startIndex){ hGRHuJ
setPageSize(PAGESIZE); Qh+zs^-?
setTotalCount(totalCount); T\"-q4+=C
setItems(items); B_*Ayk
setStartIndex(startIndex); 0cq<!{d
} |)S*RQb\
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public PaginationSupport(List items, int D#gC-,
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totalCount, int pageSize, int startIndex){ <==6fc>s
setPageSize(pageSize); vsJDVJ +=
setTotalCount(totalCount); /@U bN\
setItems(items); R{pF IyR
setStartIndex(startIndex); 6FY.kN\
} *MQ`&;Qa,
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publicList getItems(){ dSe d6
return items; '$[%x
} L3A2A
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publicvoid setItems(List items){ $W%-Mm
this.items = items; fk!9` p'
} u:^sEk"Lk'
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publicint getPageSize(){ ]CPF7Hf
return pageSize; |
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} $hMD6<e
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publicvoid setPageSize(int pageSize){ vM50H
this.pageSize = pageSize; F|@\IVEB]
} Hg$7[um
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publicint getTotalCount(){ zRbY]dW
return totalCount; >GLoeCRNu
} UmY{2 nzY
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publicvoid setTotalCount(int totalCount){ *eX/ZCn
if(totalCount > 0){ }kP<zvAaw
this.totalCount = totalCount; %k~ezn
int count = totalCount / g@T}h[
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pageSize; Io[NN aF|
if(totalCount % pageSize > 0) H \'1.8g/
count++; bwj{5-FU
indexes = newint[count]; Y B,c=Wx
for(int i = 0; i < count; i++){ OzwJ 52
indexes = pageSize * x,zYNNx5g
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} :H wdXhA6
}else{ k>7bPR5Mw
this.totalCount = 0; fx>U2
} [cco/=c
} >\w]i*%
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publicint[] getIndexes(){ /'5d0' ,M
return indexes; IvlfX`("
} >]_^iD]*t
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publicvoid setIndexes(int[] indexes){ :`Ut.E~.
this.indexes = indexes; e([>sAx!1
} vhAgX0k
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publicint getStartIndex(){ H%gAgXHn
return startIndex; m C`*#[
} M=lU`Sm
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publicvoid setStartIndex(int startIndex){ 6>oc,=MV/
if(totalCount <= 0) 0y+^{@lU
this.startIndex = 0; 6@t&
elseif(startIndex >= totalCount) q6w)zTpJGJ
this.startIndex = indexes cz{`'VN}`
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[indexes.length - 1]; dH
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elseif(startIndex < 0) T!ZjgCY}
this.startIndex = 0; ydo9 P5E
else{ ~!qnKM>[
this.startIndex = indexes MP)Prl>
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[startIndex / pageSize]; At?|[%<`
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} )Uy%iE*
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publicint getNextIndex(){ HY
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int nextIndex = getStartIndex() + Wc2&3p9 c
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pageSize; &1yJrj9y
if(nextIndex >= totalCount) E+qLj|IU
return getStartIndex(); ] xHiy+
else |-b\N6
}
return nextIndex; #IvKI+"
}
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publicint getPreviousIndex(){ grzmW4Cw
int previousIndex = getStartIndex() - uX3yq<lK"
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pageSize; &qG/\
if(previousIndex < 0) jVd`J
return0; T` h%=u|D
else [0y,K{8t
return previousIndex; R}gdN-941
} %%}l[W
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抽象业务类 <q$Tk,
java代码: mMwV5\(
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/** DdI%TU K,
* Created on 2005-7-12 v)_c*+6u
*/ !~9ASpqvPy
package com.javaeye.common.business; p-{ 4 $W
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import java.io.Serializable; #X'-/q`.
import java.util.List; yKl^-%Uq<
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import org.hibernate.Criteria; M?sax+'
import org.hibernate.HibernateException; aC2Vz9e
import org.hibernate.Session; &,%n
import org.hibernate.criterion.DetachedCriteria; g 4=1['wW
import org.hibernate.criterion.Projections; ,+`r2}N
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import }Y.YJXum
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org.springframework.orm.hibernate3.HibernateCallback; ,4xNW:!j
import X5/j8=G H`
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org.springframework.orm.hibernate3.support.HibernateDaoS vc|tp_M67
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upport; \-]Jm[]^
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import com.javaeye.common.util.PaginationSupport; 4bGvkxZo`$
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public abstract class AbstractManager extends \A\
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HibernateDaoSupport { p1niS:}j
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privateboolean cacheQueries = false; ]I,&Bme
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privateString queryCacheRegion; P?>:YY53
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publicvoid setCacheQueries(boolean &2 Yo
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cacheQueries){ Zc_F"KJL
this.cacheQueries = cacheQueries; N<<wg{QO
} z. hq2v
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publicvoid setQueryCacheRegion(String OCdX'HN5Y
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queryCacheRegion){ N~v<8vJq`
this.queryCacheRegion = sYXLVJ>b
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queryCacheRegion; .{t5_,P
} \Kui`X
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publicvoid save(finalObject entity){ 8u)>o*
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getHibernateTemplate().save(entity); j-J/yhWO&
} <bW~!lv
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publicvoid persist(finalObject entity){ [Y`E"1f2
getHibernateTemplate().save(entity); |4/rVj"
} s7}-j2riq
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publicvoid update(finalObject entity){ L:&