Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 ud@%5d
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ra
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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 l L@XM2"
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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 `Cynj+PCe
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分页支持类: L2i_X@/
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java代码: nV/G8SeI
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package com.javaeye.common.util; u[=r,^YQ
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import java.util.List; ShP^A"Do
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publicclass PaginationSupport { XnMvKPerv'
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publicfinalstaticint PAGESIZE = 30; 6wjw ^m0
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privateint pageSize = PAGESIZE; LxSpctiNx
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privateList items; h_3E)jc
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privateint totalCount; a:OQGhc=
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privateint[] indexes = newint[0]; `MN4uC
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privateint startIndex = 0; CXx*_@}MU
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public PaginationSupport(List items, int '"/=f\)u
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totalCount){ .glA
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setPageSize(PAGESIZE); ;)z:fToh
setTotalCount(totalCount); Y0dEH^I
setItems(items); x,@B(9No
setStartIndex(0); GdxnpE
} V]e 8a"/[{
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public PaginationSupport(List items, int /cQueUME`
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totalCount, int startIndex){ rCbDu&k]
setPageSize(PAGESIZE); SaAFz&WRl
setTotalCount(totalCount); Q}K"24`=
setItems(items); s %``H`
setStartIndex(startIndex); M@H;pJ+B
} 4ber!rJM
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public PaginationSupport(List items, int x$.^"l-vX
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totalCount, int pageSize, int startIndex){ U!?_W=?
setPageSize(pageSize); dI@(<R
setTotalCount(totalCount); {14fA)`%
setItems(items); qJa H,
setStartIndex(startIndex); {
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} r|fL&dtr
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publicList getItems(){ _~J
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return items; "R1NG?;q
} #64-~NVL_
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publicvoid setItems(List items){ F Q7T'G![
this.items = items; < #}5IQ5`Z
} ~IfJwBn-i
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publicint getPageSize(){ Ms5ap<q#
return pageSize; HIR~"It$
} bz2ztH9 n
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publicvoid setPageSize(int pageSize){ ;!mzyb*
this.pageSize = pageSize; L:pYn_
} ]7F=u!/`<C
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publicint getTotalCount(){ k"T}2 7
return totalCount; rq/yD,I,
} r6MMCJ|G
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publicvoid setTotalCount(int totalCount){ fF$<7O)+]
if(totalCount > 0){ 2G67NC?+
this.totalCount = totalCount; RXpw!
int count = totalCount / rb2S7k0{
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pageSize; D3Ig>gKo?m
if(totalCount % pageSize > 0) "$Z= %.3Q
count++; Vod\a5c
indexes = newint[count]; dGYn4i2k?
for(int i = 0; i < count; i++){ Ustv{:7v
indexes = pageSize * 4$iz4U:P
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} Pmr5S4Ka
}else{ 6S'yZQ|b
this.totalCount = 0; 8>2.UrC
} j9x<Y]
} h5{'Q$Erl
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publicint[] getIndexes(){ xd q?/^E
return indexes; zl>nSndRE
} !*F1q|R
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publicvoid setIndexes(int[] indexes){ @; zl
this.indexes = indexes; \=?a/
} fNli
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publicint getStartIndex(){ l6T-}h:=
return startIndex; pXT4)JDpc
} ^pAAzr"hv
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publicvoid setStartIndex(int startIndex){ B4c]}r+
if(totalCount <= 0) -LoZs
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this.startIndex = 0; 8`q:Gz=M\
elseif(startIndex >= totalCount) rxgbV.tx
this.startIndex = indexes =r?hgGWe
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[indexes.length - 1]; Z58X5"
elseif(startIndex < 0) (Ft+uuG
this.startIndex = 0; jiV<+T?
else{ ^EtMxF@D
this.startIndex = indexes k2omJ$?v
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[startIndex / pageSize]; Xk~D$~4<
} Gv!2f
} ~NrG`
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publicint getNextIndex(){ v}}F,c(f
int nextIndex = getStartIndex() + &=@IzmA
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pageSize; 7{e
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if(nextIndex >= totalCount) r_)' Ps
return getStartIndex(); 4x=v?g&
else %B2'~|g
return nextIndex; $-OA'QwB]
} BM%e0n7
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publicint getPreviousIndex(){ m)ky*"(
int previousIndex = getStartIndex() - . oF
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pageSize; *.ll<p+(-
if(previousIndex < 0) y2Q&s9$Do
return0; Maha$n*
else d\&U*=
return previousIndex; /kZebNf6H
} }Sm(]y
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} ?hZAxR\
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抽象业务类 m4[ ;(1
java代码: |{z:IQLv
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/** uanhr)Ys
* Created on 2005-7-12 gDQ^)1k
*/ G)AqbY
package com.javaeye.common.business; %^)fmu
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import java.io.Serializable; pxA?
import java.util.List; A9KET$i@v
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import org.hibernate.Criteria; 2jA {SY-
import org.hibernate.HibernateException; lF<]8m%F
import org.hibernate.Session; N~nziY*C,*
import org.hibernate.criterion.DetachedCriteria; +RHS!0
import org.hibernate.criterion.Projections; ^rB8? kt
import aj-Km`5r}
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