Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 E<+ G5j
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 ;iX~3[]
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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 69r%b7#
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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 ")MHP~ ?
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分页支持类: dj(&"P
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java代码: A@<
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package com.javaeye.common.util; w~Q\:<x&~Z
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import java.util.List; ":+d7xR?o
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publicclass PaginationSupport { vaF1e:(
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publicfinalstaticint PAGESIZE = 30; j7&#R+f
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privateint pageSize = PAGESIZE; DI8I'c-P
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privateList items; A<c<!N
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privateint totalCount; ru`7iqcz
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privateint[] indexes = newint[0]; .?NfV%vv
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privateint startIndex = 0; Y_n/rD>
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public PaginationSupport(List items, int e}2?)B`[
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totalCount){ }Jh.+k|_
setPageSize(PAGESIZE); *%jXjTA0D
setTotalCount(totalCount);
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setItems(items); <fBJ@>
setStartIndex(0); GtmoFSZ
} wE1 GyN
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public PaginationSupport(List items, int HkRvcX
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totalCount, int startIndex){ m
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setPageSize(PAGESIZE); ][Tw^r&
setTotalCount(totalCount); V$DB4YM1k
setItems(items); 7n .A QII
setStartIndex(startIndex); %9zpPrWF
} Yqh-U%"'
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public PaginationSupport(List items, int BIMX2.S1o
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totalCount, int pageSize, int startIndex){ @)Vb?|3
setPageSize(pageSize); %Jl6e}!
setTotalCount(totalCount); T@vE@D
setItems(items); .DwiIr'
setStartIndex(startIndex); [%LGiCU]
} m-C#~Cp36
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publicList getItems(){ c9H6\ &
return items; 8}[<3K%*g
} o}waJN`yI
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publicvoid setItems(List items){ ]c_lNHssmq
this.items = items; hQ:wW}HWW
} L6qK3xa}
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publicint getPageSize(){ hb1h.F
return pageSize; -2laM9Ed
} 8M3DG=D
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publicvoid setPageSize(int pageSize){ -
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this.pageSize = pageSize; NmpNme
} #.]W>hN8\
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publicint getTotalCount(){ fUq}dAs*K
return totalCount; U\{I09@E 0
} 0:`YY8j1k
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publicvoid setTotalCount(int totalCount){ k=Wt57jt
if(totalCount > 0){
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this.totalCount = totalCount; vcy(!r
int count = totalCount / =RWY0| f
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pageSize; ZS3T1
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if(totalCount % pageSize > 0) kiin7 8W
count++; .;vd
indexes = newint[count]; zuJ` 704
for(int i = 0; i < count; i++){ K;`*n7=IA
indexes = pageSize * f~jdN~
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} 6QPbmO]z
}else{ T sJ71
this.totalCount = 0; oqK:
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} FNl^ lj`Y
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publicint[] getIndexes(){ }ZwnG=7T?
return indexes; OWN|W,
} k[1[Y{n.
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publicvoid setIndexes(int[] indexes){ t!ZFpMv]n
this.indexes = indexes; [h\_yU[P
} noT}NX%
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publicint getStartIndex(){ V/"41
return startIndex; LR17ilaa'
} 5'0kf7
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publicvoid setStartIndex(int startIndex){ lFgE{;z@
if(totalCount <= 0) Y}x_ud,
this.startIndex = 0; }4>#s$.2
elseif(startIndex >= totalCount) ZQJh5.B
this.startIndex = indexes 0g@*N4
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[indexes.length - 1]; ~-(X\:z}
elseif(startIndex < 0) ><@& &u.
this.startIndex = 0; 0*u X2*
else{ l%xeM!}
this.startIndex = indexes 9l7 youZ]
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[startIndex / pageSize]; IG@@CH
} 5YiBw|Z7 "
} }% ?WS
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publicint getNextIndex(){ odq3@
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int nextIndex = getStartIndex() + e}"k8 ./
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pageSize; iwEHEi%
if(nextIndex >= totalCount) z: W1(/W~
return getStartIndex(); O`(it%Ho!
else Vg"Ze[dA
return nextIndex; }Qvoms<k
} ?x =Sm|Ej
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publicint getPreviousIndex(){ A}n5dg0u
int previousIndex = getStartIndex() - l'Z `%}R
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pageSize; %O&C\{J
if(previousIndex < 0) cE]#23
return0; @sb00ad2q
else b(gcnSzM2
return previousIndex; jLf8 7
} 4K*DEVS
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} Sst`*PX:
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抽象业务类 F1o"H/:n
java代码:
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/** u~d&<_Z
* Created on 2005-7-12 >'zp
*/ r\66]u[
package com.javaeye.common.business; *`V-zD
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import java.io.Serializable; "ae55ft//
import java.util.List; S\UM0G}v
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import org.hibernate.Criteria; R OQIw
import org.hibernate.HibernateException; a?!Joi[
import org.hibernate.Session; KPA5 X]
import org.hibernate.criterion.DetachedCriteria; #0 WO~wL
import org.hibernate.criterion.Projections; Gu_Rf&:
import $bKa"T*
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org.springframework.orm.hibernate3.HibernateCallback; {#y HL
import fJC,ubP[5
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org.springframework.orm.hibernate3.support.HibernateDaoS 4[&6yHJ^
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upport; ~1h-LbFI2
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import com.javaeye.common.util.PaginationSupport; *lG$B@;rc|
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public abstract class AbstractManager extends QrPWS-3~!
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HibernateDaoSupport { ;SVF"Uo
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privateboolean cacheQueries = false;
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privateString queryCacheRegion;
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publicvoid setCacheQueries(boolean +o/;bm*U<K
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cacheQueries){ /HDX[R
this.cacheQueries = cacheQueries; ^j=_=Km]
} ZcO!cR&*'J
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publicvoid setQueryCacheRegion(String M=N`&m