Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 aA-
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 vK$"# F~
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 `nUO l
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改 fF*`'i=!
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分页支持类: b|SE<\
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java代码: n;R#,!<P
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package com.javaeye.common.util; gn5)SP 8
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import java.util.List; @H !$[m3
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publicclass PaginationSupport { ]a2W e`
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publicfinalstaticint PAGESIZE = 30; ~lEVXea!
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privateint pageSize = PAGESIZE; I2(zxq&2M\
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privateList items; UZ8?[
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privateint totalCount; 7=@jARW&
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privateint[] indexes = newint[0]; (><zsLs&
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privateint startIndex = 0; ZxGP/D
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public PaginationSupport(List items, int jQU"Ved
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totalCount){ :hGPTf
setPageSize(PAGESIZE); (2?G:+C 7
setTotalCount(totalCount); #6Xs.*b5C
setItems(items); d@mo!zu
setStartIndex(0); *zO&N^X.4
} `k\grr.J
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public PaginationSupport(List items, int S{',QO*D6
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totalCount, int startIndex){ g%[n4
setPageSize(PAGESIZE); 9Pd*z>s
setTotalCount(totalCount); 4LI0SwD#^/
setItems(items); DaNW~rd{
setStartIndex(startIndex); v;{{ y-
} x0a.!
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public PaginationSupport(List items, int ryO$6L
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totalCount, int pageSize, int startIndex){ A`O <6
setPageSize(pageSize); Do?P<x o
setTotalCount(totalCount); Z: 2I/
setItems(items); j:5%ppIY
setStartIndex(startIndex); 4X
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} Gt9wR
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publicList getItems(){ j-]&'-h}#
return items; ;??ohA"{5
} (yQ
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publicvoid setItems(List items){ 8OWmzY_=
this.items = items; "$p#&W69"J
} zH)_vW
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publicint getPageSize(){ #nyv+x;
return pageSize; eR']#Q46{T
} Z\X'd_1!
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publicvoid setPageSize(int pageSize){ "u}9@}*
this.pageSize = pageSize; {I%y;Aab8
} s #:%x#
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publicint getTotalCount(){ Ru%|}sfd
return totalCount; /<)-q-W;
} DrS~lTf=>
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publicvoid setTotalCount(int totalCount){ T!q_/[i~7
if(totalCount > 0){ bk#xiuwT
this.totalCount = totalCount; [_DPxM=V
int count = totalCount / NlR"$
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pageSize; 34C``i
if(totalCount % pageSize > 0) 2@@l {Y0f6
count++; fhpX/WE6
indexes = newint[count]; irxz l3
for(int i = 0; i < count; i++){ ~P1_BD(
indexes = pageSize * 3VCqp13
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} eO5ktEoJ
}else{ c c G['7
this.totalCount = 0; vgPUIxB@
} \d68-JS@~
} 4^Qi2[ w
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publicint[] getIndexes(){ =:$) Z
return indexes; k'13f,o}
} bAhZ7;T~
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publicvoid setIndexes(int[] indexes){ W}gVIfe
this.indexes = indexes; tW6#e(^l6
} q(9%^cV6
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publicint getStartIndex(){ V:^H4WvL\W
return startIndex; .P/xs4
} d.}}s$Q
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publicvoid setStartIndex(int startIndex){ EZAm)5:]A
if(totalCount <= 0) 7>je6*(K
this.startIndex = 0; t[O+B6
elseif(startIndex >= totalCount) Qilj/x68
this.startIndex = indexes z[#6-T
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[indexes.length - 1]; JLW$+62
elseif(startIndex < 0) 2ij/N%l
this.startIndex = 0; 0VG=?dq
else{ #eEvF
this.startIndex = indexes ' o=E!?
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[startIndex / pageSize]; O]_={%
} 7+8bL{
} )+B=z}:Nfz
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publicint getNextIndex(){ ]L]T>~X`
int nextIndex = getStartIndex() + RK3.-
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pageSize; E!YmcpCl
if(nextIndex >= totalCount) "gg(tp45
return getStartIndex(); ScHlfk
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else 0~i q G
return nextIndex; 7j R7
} @ V5S4E
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publicint getPreviousIndex(){ 6=BZ~ed
int previousIndex = getStartIndex() - cUVTRWV
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pageSize; "o<D;lO
if(previousIndex < 0) 5F03y`@ u
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else ])68wqD
return previousIndex; }{#7Z8
} rJp?d9B
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} e18T(g_i
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抽象业务类 \|Y{jG<cu
java代码: |y'b217t
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/** ~|qXtds$
* Created on 2005-7-12 iF+S%aPd#
*/ BMe72
package com.javaeye.common.business; @ikUM+A {
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import java.io.Serializable; XuA0.b%
import java.util.List; !__D}k,
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import org.hibernate.Criteria; |#!eMJ&0
import org.hibernate.HibernateException; |zg=+
import org.hibernate.Session; |\rSa^:5
import org.hibernate.criterion.DetachedCriteria; \}n !yYh(
import org.hibernate.criterion.Projections; zmdWVFVv
import fWqv3nY^
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org.springframework.orm.hibernate3.HibernateCallback; +q$xw}+PK
import '"'D.,[W2
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org.springframework.orm.hibernate3.support.HibernateDaoS ZKZl>dDuh
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upport; !4i,%Z&6
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import com.javaeye.common.util.PaginationSupport; fpI;`s
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public abstract class AbstractManager extends cA2^5'$$
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HibernateDaoSupport { EKV+?jj$
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privateboolean cacheQueries = false; aslU`#"
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privateString queryCacheRegion; dcV,_
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publicvoid setCacheQueries(boolean !hwzKm=%N
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cacheQueries){ 2V#c[%vI
this.cacheQueries = cacheQueries; pil0,r
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} V[BY/<z)A
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publicvoid setQueryCacheRegion(String ^.ZSpc}<
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queryCacheRegion){ #i}# jMT
this.queryCacheRegion = >X-ed
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