Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 VelB-vy&
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 Jt2,LL:G
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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 @PPR$4
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自于Quake Wang的javaeye-core包的相应类,然后又做了很多修改
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分页支持类: 8%o~4u3
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java代码: 5Noe/6
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package com.javaeye.common.util; ]urK$
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import java.util.List; AH&9Nye8
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publicclass PaginationSupport { wVgi+P
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publicfinalstaticint PAGESIZE = 30; [AXsnpa/C
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privateint pageSize = PAGESIZE; a(8>n
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privateList items; \s=QiPK
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privateint totalCount; luW
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privateint[] indexes = newint[0]; p1Q/g Il
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privateint startIndex = 0; R=`U 4Ml;
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public PaginationSupport(List items, int y0,Ft/D
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totalCount){ hzaU8kb
setPageSize(PAGESIZE); RNGO~:k?r
setTotalCount(totalCount); 43KaL(
setItems(items); r+o_t2_b*
setStartIndex(0); F4Rr26M
} j*XjY[
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public PaginationSupport(List items, int !?jK1{E3
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totalCount, int startIndex){ ;:P7}v fz!
setPageSize(PAGESIZE); WPIZi[hBs
setTotalCount(totalCount); !6lOIgn
setItems(items); T-^0:@5o9
setStartIndex(startIndex); '}_=kp'X
} W/sY#"
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public PaginationSupport(List items, int j(sLK
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totalCount, int pageSize, int startIndex){ J2m"1gq,
setPageSize(pageSize); GjEqU;XBi
setTotalCount(totalCount); >E,Q
setItems(items); 1t.R+1[c
setStartIndex(startIndex); q]K'p,'
} ]
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publicList getItems(){ .@@an;C
return items; GLCAiSMz[
} <KX&zi<L)
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publicvoid setItems(List items){ Y3k[~A7X
this.items = items; T<P0T<
} E:)Cp
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publicint getPageSize(){ !.*iw
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return pageSize; yplG18
} W2hA-1
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publicvoid setPageSize(int pageSize){ o,1Dqg4P3
this.pageSize = pageSize; uaaf9SL?
} <[ZI.+_Wt
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publicint getTotalCount(){ P_&p=${
return totalCount; Lc|{aN
} b!^@PIX
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publicvoid setTotalCount(int totalCount){ w^Ag]HZN
if(totalCount > 0){ ,5{$+
this.totalCount = totalCount; -9d%+O~v6~
int count = totalCount / Z/g]o#
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pageSize; doR4nRl9
if(totalCount % pageSize > 0) epkD*7
count++;
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indexes = newint[count]; oQ\&}@(V
for(int i = 0; i < count; i++){ <( EyXV
indexes = pageSize * DZk1ZLz
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} N}x9N.
}else{ _{)9b24(
this.totalCount = 0; "}zt`3
} KmmQ ,e%
} m*Cu-6&qd
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publicint[] getIndexes(){ $(rc/h0/E
return indexes; `*_CElpP"
}
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publicvoid setIndexes(int[] indexes){ Q4Q pn
this.indexes = indexes; u-:Ic.ZV
} 4TZ cc|B5
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publicint getStartIndex(){ cbYK5fj"T
return startIndex; FnE6?~xa
} UQPU"F7.
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publicvoid setStartIndex(int startIndex){ D(\$i.,b2
if(totalCount <= 0) |8U;m:AS
this.startIndex = 0; xaW{I7FfG
elseif(startIndex >= totalCount) bK*~ol
this.startIndex = indexes Cy@ cLdV
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[indexes.length - 1]; BC7 7<R!E)
elseif(startIndex < 0) ,Eu?JH&}u
this.startIndex = 0; G5Yk bw#
else{ Ia4)uV8
this.startIndex = indexes z 7T0u.4Ss
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[startIndex / pageSize]; ZA820A>2!
} '*T]fND4
} goZ V.,w
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publicint getNextIndex(){ {_>em*V b
int nextIndex = getStartIndex() + $NG++N
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pageSize; c$h9/H=~
if(nextIndex >= totalCount) $/Ov2z
return getStartIndex(); g0&\l}&%U
else j.|U=)E
return nextIndex; y7lWeBnC
} tef^ShF]
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publicint getPreviousIndex(){ Im?LIgt$
int previousIndex = getStartIndex() - r>t1 _b+nu
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pageSize; m_7
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if(previousIndex < 0) MesRa(
return0; m%r/O&g
else iiC!|`k"
return previousIndex; 'Jj=RAV`
} X#p Wyo~
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} )!W45"l-3M
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抽象业务类 ,kM)7!]N
java代码: LKF/u` 0dP
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/** ULqoCd%bK
* Created on 2005-7-12 z\!K<d"Xv
*/ EL{vFP
package com.javaeye.common.business; wdas1
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import java.io.Serializable; ;H0 {CkH
import java.util.List; !CY&{LEYn0
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import org.hibernate.Criteria; [2c{k
import org.hibernate.HibernateException; , H
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import org.hibernate.Session; CI7A#
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import org.hibernate.criterion.DetachedCriteria; X$n(-65
import org.hibernate.criterion.Projections; ,<Kx{+ [h
import HIvZQQW|
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org.springframework.orm.hibernate3.HibernateCallback; ^QXbJJ
import 42C<1@>zO
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org.springframework.orm.hibernate3.support.HibernateDaoS R^&q-M=O[
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upport; >{zk
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import com.javaeye.common.util.PaginationSupport; mEAXM1J|
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public abstract class AbstractManager extends @C8DZ5)
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HibernateDaoSupport { =r.
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privateboolean cacheQueries = false; E /<lGm:.
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privateString queryCacheRegion; Li{~=S@N*
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publicvoid setCacheQueries(boolean $&I'o
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cacheQueries){
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this.cacheQueries = cacheQueries; Q /x8 #X
} \3YO<E!t
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publicvoid setQueryCacheRegion(String GIwh@4;
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queryCacheRegion){ MjL)IgT
this.queryCacheRegion = 2 ][DZl
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queryCacheRegion; V4w=/e_
} YUWn;#
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publicvoid save(finalObject entity){ ]2SI!Ai7
getHibernateTemplate().save(entity); pJIv+
} '-$XX%TOAc
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publicvoid persist(finalObject entity){ YPDf
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getHibernateTemplate().save(entity); dI'SwnR
} ~l[ra
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publicvoid update(finalObject entity){ m` AK~O2
getHibernateTemplate().update(entity); #s-iy+/1oN
} uzOYVN$t
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