Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 Sr6?^>A@t
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 leJ3-w{ 2
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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 Mwd.S
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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 WQY\R!+
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分页支持类: StMvz~
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java代码: 6IL-S%EGK1
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package com.javaeye.common.util; dcN4N5r
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import java.util.List; 2ZQ|nwb7
{
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publicclass PaginationSupport { d#HN'(2t
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publicfinalstaticint PAGESIZE = 30; bg,VK1
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privateint pageSize = PAGESIZE; x>[ gShAV!
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privateList items; P6 mDwR
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privateint totalCount; El3Ayd3
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privateint[] indexes = newint[0]; z~yLc{M
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privateint startIndex = 0; (FNX>2Mv
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public PaginationSupport(List items, int (7}Zh|@W
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totalCount){ lJBZ0
setPageSize(PAGESIZE); ]\J(
setTotalCount(totalCount); E&|EokSyN
setItems(items); ?}U l(
setStartIndex(0); eLop}*k
} .+ CMm5T
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public PaginationSupport(List items, int 78u=J z6
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totalCount, int startIndex){ U,^jN|v
setPageSize(PAGESIZE); T`| >oX
setTotalCount(totalCount); |>=\
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setItems(items); _zFJ]7Ym.)
setStartIndex(startIndex); OMN|ea.O
} ~bX ) %jC
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public PaginationSupport(List items, int 1s#GY<<
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totalCount, int pageSize, int startIndex){
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setPageSize(pageSize); Kl+4A}Uo
setTotalCount(totalCount); dY]iAJ
setItems(items); b]5S9^=LI
setStartIndex(startIndex); '5SO3/{b
} %Z#[{yuFs
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publicList getItems(){ ^NOy:>
return items; =zKbvwe%X
} F[U0TP@&*
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publicvoid setItems(List items){ Zq"wq[GCN
this.items = items; A/*h[N+2!
} *Ja,3Qq
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publicint getPageSize(){ Dlu]4n[LB
return pageSize; /pnQKy.
} zH?&FtO
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publicvoid setPageSize(int pageSize){ 9 kS;_(DB
this.pageSize = pageSize; <<9Y=%C+
} 3 p9LVa
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publicint getTotalCount(){ wi-{&
return totalCount; u&ozc
} 2HJGp+H
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publicvoid setTotalCount(int totalCount){ uB uwE6
if(totalCount > 0){ 9IG3zM f
this.totalCount = totalCount; Z~Z+Yt;,9a
int count = totalCount / O(f&0h
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pageSize; Kkz2N
if(totalCount % pageSize > 0) $^"_Fox]A\
count++; dq$CCOC^F
indexes = newint[count]; r=pb7=M#LN
for(int i = 0; i < count; i++){ vE+OL8 V
indexes = pageSize * $;%dQ!7*
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} x<e-%HB*-
}else{ (Qys`D
this.totalCount = 0; }X*.Vv A
} )VCRbz"[g
} H(Q|qckj
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publicint[] getIndexes(){ #pw=HHq*(
return indexes; (-rw]=Qu
} -}2e+DyAy
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publicvoid setIndexes(int[] indexes){ K=C).5=U
this.indexes = indexes; ]&/KAk
} 1)f~OL8o
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publicint getStartIndex(){ k/ ZuFTN
return startIndex; 9d!}]+"d42
} r=ds'n"
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publicvoid setStartIndex(int startIndex){ VpMPTEZ*L
if(totalCount <= 0) b/Z0{38
this.startIndex = 0; #ZRplA~C7]
elseif(startIndex >= totalCount) -"e$ VB
this.startIndex = indexes !56gJJ-r
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[indexes.length - 1]; xiPP&$mg
elseif(startIndex < 0) g"Z X1X
this.startIndex = 0; +~A<&7[}
else{ #%i-{t+_>
this.startIndex = indexes b,#E.%SLw
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[startIndex / pageSize]; A?xb
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} `FM^)(wT
} A{Q :,S)
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publicint getNextIndex(){ ihJC)m`Hbl
int nextIndex = getStartIndex() + y3O Nn~k
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pageSize; D%Y{(l+X
if(nextIndex >= totalCount) z3[0BWXs
return getStartIndex(); -f-2!1&<3h
else :J}@*>c
return nextIndex; 8HLcDS#
} 7E9h!<5v
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publicint getPreviousIndex(){ H19CVc\B
int previousIndex = getStartIndex() - sm>Hkci%
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pageSize; JDzkv%E^
if(previousIndex < 0) d>Z{TFY
return0; *?+maK{5+
else Y(]&j`%
return previousIndex; ,1YnWy*
} #)BdN
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} Tx7YHE6{
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抽象业务类 !Fz9\|
java代码: tU%-tlU9?
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/** fxQN
* Created on 2005-7-12 ?7cF_Zvve
*/ M9@#W"
package com.javaeye.common.business; }>:x
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import java.io.Serializable; ^J>jU`)CJ
import java.util.List; 6#k
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import org.hibernate.Criteria; Cse@>27s
import org.hibernate.HibernateException; %Iv0<oU
import org.hibernate.Session; URW'*\Xjb
import org.hibernate.criterion.DetachedCriteria; .Wq`qF(;
import org.hibernate.criterion.Projections; qu[x=LZ_
import ,diV;d
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org.springframework.orm.hibernate3.HibernateCallback; F~ n}Ep~1
import 1px:(8]{
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org.springframework.orm.hibernate3.support.HibernateDaoS T]nZ3EZ
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upport; MQQ!@I`
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import com.javaeye.common.util.PaginationSupport; )^^r\
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public abstract class AbstractManager extends {cv,Tz[Q>
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HibernateDaoSupport { sDCa&"6+@
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privateboolean cacheQueries = false; kvdzD6T
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privateString queryCacheRegion;
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publicvoid setCacheQueries(boolean zk4yh%Cd_
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cacheQueries){ '8>#`Yba
this.cacheQueries = cacheQueries; T"Wq:
} )*^PMf
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publicvoid setQueryCacheRegion(String `ge{KB;*n#
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queryCacheRegion){
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this.queryCacheRegion = _SC>EP8:Z
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queryCacheRegion; WZCX&ui