Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 aTHf+;
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 hUi5~;Q5Fi
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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 \g]rOYW
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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 oVUsI,8
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分页支持类: l8Yr]oNkz
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java代码: ]EN&EA"<
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package com.javaeye.common.util; es69P)
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import java.util.List; 4u2_xbT
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publicclass PaginationSupport { 8PeVHpZ
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publicfinalstaticint PAGESIZE = 30; C2iOF /4
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privateint pageSize = PAGESIZE; &QHmo*
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privateList items; \8{Tj54NA
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privateint totalCount; Zia6m[ ^Q
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privateint[] indexes = newint[0]; (/>
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privateint startIndex = 0; ! "08TCc<
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public PaginationSupport(List items, int %<q"&]e,
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totalCount){ DAN"&&
setPageSize(PAGESIZE); su-0G?c
setTotalCount(totalCount); Y8mv[+Z
setItems(items); N0
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setStartIndex(0); (Zy=e?E,
} 5(\[Gke
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public PaginationSupport(List items, int 1Ji"z>H*
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totalCount, int startIndex){ `AdHyE
setPageSize(PAGESIZE); !<-+}X+o8$
setTotalCount(totalCount); }u5J<*:bZ
setItems(items); wp/x|AV
setStartIndex(startIndex); h!hv{c
} "bjbJC&T
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public PaginationSupport(List items, int +A_jm!tJS(
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totalCount, int pageSize, int startIndex){ /hyCR___
setPageSize(pageSize); okW'}@jD
setTotalCount(totalCount); 61TL]S8
setItems(items); G~4|]^`g
setStartIndex(startIndex); h/l?,7KHI
} wi:d!,P`e
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publicList getItems(){ C4C!-12
return items; KEr?&e
} +d6Jrd*
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publicvoid setItems(List items){ Yr:$)ap
this.items = items; &cx]7:;
} (b1rd
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publicint getPageSize(){ `udZ =S"/L
return pageSize; h6Hop mWVx
} ~/R}K g(
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publicvoid setPageSize(int pageSize){ RQ51xTOL4]
this.pageSize = pageSize; x\(yjNZH
} pvd9wKz
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publicint getTotalCount(){ ),I7+rY
return totalCount; [6Nzz]yy
} }4I;<%L3`
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publicvoid setTotalCount(int totalCount){ :20k6 )
if(totalCount > 0){ <Xj
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this.totalCount = totalCount; E@;v|Xc
int count = totalCount / ?B,B<@='%
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pageSize; 8"S?
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if(totalCount % pageSize > 0) b(gcnSzM2
count++; 7llEB*dSA
indexes = newint[count]; k+&1?]
for(int i = 0; i < count; i++){ zzBq b\Ky
indexes = pageSize * Hz<)a(r!J
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} x?Oc<CQ-2
}else{
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this.totalCount = 0; =Hs~fHa)
} |k9A*7I
} >pl*2M&
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publicint[] getIndexes(){ /2!"_?<L
return indexes; 0CO6-&F9n
} IyA8+N
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publicvoid setIndexes(int[] indexes){ $$G^#t1=XZ
this.indexes = indexes; !bCLi>8
} *8CE0;p'k
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publicint getStartIndex(){ Iq[,)$
return startIndex; $yb8..+
} s2ys>2k
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publicvoid setStartIndex(int startIndex){ 62LQUl]<
if(totalCount <= 0) \
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this.startIndex = 0; v)2@;Q
elseif(startIndex >= totalCount) ZvO:!u0+"
this.startIndex = indexes ]H|1quT
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[indexes.length - 1]; ;3_Q7;y
elseif(startIndex < 0) tgYIM`f
this.startIndex = 0; 2WOdTM{u
else{ m"vV=6m|\
this.startIndex = indexes L3~E*\cV
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[startIndex / pageSize]; 3^us;aOr
} 7_/.a9$G
} )V}u1C-N
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publicint getNextIndex(){ ,O(XNA(C
int nextIndex = getStartIndex() + 6C/D&+4
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pageSize; {_/6,22j(V
if(nextIndex >= totalCount) wL 5).`oq
return getStartIndex(); MOmp{@
else 5J&n<M0G1
return nextIndex; XW Y0WDh:
} N]yk<55
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publicint getPreviousIndex(){ C>;yW7*g"
int previousIndex = getStartIndex() - "5jZS6A]
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pageSize; 8a)EL*LH`
if(previousIndex < 0) d*>M<6b-
return0; }}(~'
else Qw5M\
return previousIndex; ~0 FqY&4
} L6A6|+H%E
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} !P92e1
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抽象业务类 "msg./iC
java代码: ;LrKXp
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/** 0`ib_&yI
* Created on 2005-7-12 3P\I;xM
*/ \AK|~:\]
package com.javaeye.common.business; *,n7&
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import java.io.Serializable; Y+=@5+G
import java.util.List; Om1z
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import org.hibernate.Criteria; yauP j&^R
import org.hibernate.HibernateException; O@=mN*<gg0
import org.hibernate.Session; 1VZ>*Tl
import org.hibernate.criterion.DetachedCriteria; .$OInh
import org.hibernate.criterion.Projections; .N+xpxdG,
import XWUTb\@
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org.springframework.orm.hibernate3.HibernateCallback; =4%C?(\
import lb6s3b
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org.springframework.orm.hibernate3.support.HibernateDaoS \S@A
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upport; =J'?>-B
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import com.javaeye.common.util.PaginationSupport; FXSDN268
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public abstract class AbstractManager extends P3
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HibernateDaoSupport { ?7p|
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privateboolean cacheQueries = false; #&:nkzd
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privateString queryCacheRegion; [;2:lbPx
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publicvoid setCacheQueries(boolean U+RPn?Q
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cacheQueries){ .#eXNyCe
this.cacheQueries = cacheQueries; 0X-2).nu
} Rp|&1nS
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publicvoid setQueryCacheRegion(String 3d<HIG^W}
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queryCacheRegion){ :Ir:OD#o
this.queryCacheRegion = \xZBu"
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queryCacheRegion; Cr%r<*s
} }\{1`$*~
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publicvoid save(finalObject entity){ #G=QL(f>/
getHibernateTemplate().save(entity); 11T\2&Q
} 7tpZE+OX
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publicvoid persist(finalObject entity){ fYjsSUnf
getHibernateTemplate().save(entity); B3t>M)
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} NETC{:j
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publicvoid update(finalObject entity){ =k7\g /
getHibernateTemplate().update(entity); P0(~~z&%[
} kAliCD)
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publicvoid delete(finalObject entity){ z}tp0~C
getHibernateTemplate().delete(entity); Y]K]]Ehp
} ^z;,deoGh
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publicObject load(finalClass entity, ZcRm5Du~:
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finalSerializable id){ B[B<U~I}
return getHibernateTemplate().load d)ZSzq
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(entity, id); L)'rM-nkFh
} 7NC8<