Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 Tz]R}DKB&
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 @[n#-!i
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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 L80(9Y^xn
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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 bKo %Ak,
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分页支持类: jo`ZuN{
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java代码: x)::^'74
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package com.javaeye.common.util; iQ)ydY a
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import java.util.List; sl]<A[jR
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publicclass PaginationSupport { MYAt4cHc2
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publicfinalstaticint PAGESIZE = 30;
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privateint pageSize = PAGESIZE; k +-w%
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privateList items; g$nS6w|5H
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privateint totalCount; EbC!tR
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privateint[] indexes = newint[0]; ]O@$}B];)
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privateint startIndex = 0; &R94xh%@(
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public PaginationSupport(List items, int :?t~|7O:
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totalCount){ P$)g=/td1
setPageSize(PAGESIZE); }s}g}t8v-
setTotalCount(totalCount); $T'!??|IF
setItems(items); DP ? dC`
setStartIndex(0); $83B10OQ&L
} `3+i.wR
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public PaginationSupport(List items, int ++0)KSvw
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totalCount, int startIndex){ &k}f"TX2
setPageSize(PAGESIZE); "s+4!, k
setTotalCount(totalCount); r"7n2
setItems(items); 4DA34m(
setStartIndex(startIndex); b9.M'P\
} 5~*)3z^V
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public PaginationSupport(List items, int >L7s[vKn
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totalCount, int pageSize, int startIndex){ Rr)+M3'
setPageSize(pageSize); Jz@~$L
setTotalCount(totalCount); (`P\nnb
setItems(items); lPTx] =G
setStartIndex(startIndex); yeo&Qz2vU
} oo5=5s6 3}
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publicList getItems(){ d1j9{
return items; 2QfN.<[-
} drq3=2
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publicvoid setItems(List items){ )pnyVTKt
this.items = items; +&EXTZ@o
} %Tm*^
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publicint getPageSize(){ 'Uok<;
return pageSize; mB?x_6#d9
} .fA*WQ!lb
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publicvoid setPageSize(int pageSize){ #+I'V\[
this.pageSize = pageSize; kxn&f(5
} }Mcb\+[
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publicint getTotalCount(){ j)A#}4jd
return totalCount; {1W:@6tl
} ccD+AGM.
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publicvoid setTotalCount(int totalCount){ Fnw:alWr
if(totalCount > 0){ Ha'[uEDb
this.totalCount = totalCount; yIMqQSt79z
int count = totalCount / JfY*#({y
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pageSize; \8`?ir
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if(totalCount % pageSize > 0) )Fw/Cu
count++; (i1JRn-f
indexes = newint[count]; vvoxK 0
for(int i = 0; i < count; i++){ jlEz]@
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indexes = pageSize * ()3\(d5e
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} .g*j]!_]
}else{ 7N.b-}$(
this.totalCount = 0; sDY~jP[Oa
} IK~&`n](>
} [6/QUD8
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publicint[] getIndexes(){ c8RJOc4X
return indexes; }aCa2%
} #YUaM<O
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publicvoid setIndexes(int[] indexes){ mkl{Tp*
this.indexes = indexes; ,$P,x
} FR&`R
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publicint getStartIndex(){ r~w.J+W
return startIndex; 39pG-otJ
} L*nK>
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publicvoid setStartIndex(int startIndex){ >@ t
if(totalCount <= 0) C@rGa7
this.startIndex = 0; R%E7 |NAG
elseif(startIndex >= totalCount) bS.w<V
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this.startIndex = indexes DSGcxM+
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[indexes.length - 1]; ^)VwxH:s
elseif(startIndex < 0)
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this.startIndex = 0; '`];=QY9pg
else{ H=r-f@EOrI
this.startIndex = indexes t>"%exdoZ
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[startIndex / pageSize]; 4ls:BO;k]
} *6uccx7{
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publicint getNextIndex(){ Fe+
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int nextIndex = getStartIndex() + +Y\:Q<eMFg
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pageSize; _GOSqu!3Y
if(nextIndex >= totalCount) boh?Xt-$
return getStartIndex(); s6H'}[E<
else S{YzHK
return nextIndex; nK&]8"
} GkIE;7#2kX
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publicint getPreviousIndex(){ Bq0 \T
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int previousIndex = getStartIndex() - p!.~hw9
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pageSize; V"FQVtTx7
if(previousIndex < 0) '<Z[e`/
return0; @Mk`Tl
else E?m~DYnU
return previousIndex; %!|w(Povq
} }d$-:l,w
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} ?Ua,ba*
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抽象业务类 K^-1M?
java代码: w~'xZ?
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/** +A9~h/"kt
* Created on 2005-7-12 $ /VQsb
*/ %Bq~b$
package com.javaeye.common.business; Bx\&7|,x
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import java.io.Serializable; r8k (L{W
import java.util.List; $KHm5*;nd
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import org.hibernate.Criteria; Et>#&Nw8
import org.hibernate.HibernateException; qTO6I5u
import org.hibernate.Session; Z\0Rw>#
import org.hibernate.criterion.DetachedCriteria; 3;nOm =I
import org.hibernate.criterion.Projections; Bous d
import i1iP'`r
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org.springframework.orm.hibernate3.HibernateCallback; yTm
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import +`y(S}Z
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org.springframework.orm.hibernate3.support.HibernateDaoS ]5!3|UYS
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upport; )0{`}7X
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import com.javaeye.common.util.PaginationSupport; @SQsEq+A?\
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public abstract class AbstractManager extends Q=~"xB8
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HibernateDaoSupport { A2
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privateboolean cacheQueries = false; 6Z\ aJ
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privateString queryCacheRegion; Z:4/lx7Bq
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publicvoid setCacheQueries(boolean 56.!L
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cacheQueries){ Mk!Fy]3
this.cacheQueries = cacheQueries; hU)t5/h;K
} %Ymi,o>
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publicvoid setQueryCacheRegion(String =C %)(|
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queryCacheRegion){ <'y<8gpM
this.queryCacheRegion = }\4yU=JPK
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queryCacheRegion; 5Rqdo\vE
} /Vlc8G
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publicvoid save(finalObject entity){ *D5 xbkH=.
getHibernateTemplate().save(entity); blc?[ [,!
} [-~pDkf:
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