Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 7A|n*'[T>
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 dieGLA<5_X
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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 m@)~.E
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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 )(`I1"1
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分页支持类: E7-il;`cKn
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java代码: Z-W>WR
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package com.javaeye.common.util; lAU`7uE
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import java.util.List; A L|F
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publicclass PaginationSupport { Su99A. w
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publicfinalstaticint PAGESIZE = 30; n}cjVH5
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privateint pageSize = PAGESIZE; XnmQp)nyV
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privateList items; S%zn {1F
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privateint totalCount; $eUI.j(HU
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privateint[] indexes = newint[0]; R7u &`
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privateint startIndex = 0; 33dHTV
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public PaginationSupport(List items, int wlk{V
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totalCount){ mOG;[CB
setPageSize(PAGESIZE); \^O&){q(9
setTotalCount(totalCount); 1sgI,5liUs
setItems(items); Hd
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setStartIndex(0); `6a
} b_2bg>|;
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public PaginationSupport(List items, int xi|T7,\X
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totalCount, int startIndex){ %O]]La
setPageSize(PAGESIZE); 53efF bo
setTotalCount(totalCount); #!="b8F
setItems(items); ]t$wK
setStartIndex(startIndex); ]E/^(T-O
} Dy`;]-b6u
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public PaginationSupport(List items, int ~>vv9-_
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totalCount, int pageSize, int startIndex){ 7]se!k,
setPageSize(pageSize); r'!L}^n
setTotalCount(totalCount); h=tzG KI
setItems(items); Z4 y9d?g%b
setStartIndex(startIndex); _p0@1 s(U
} SVKjhZK
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publicList getItems(){ LYY3*d
return items; yOHVL~F
} 8$)xxV_zp
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publicvoid setItems(List items){ FI|jsO 3
this.items = items; cQM_kV??!
} h`Ld%iN\
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publicint getPageSize(){
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return pageSize; 8SH&b8k<<
} B?A]0S
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publicvoid setPageSize(int pageSize){ H!N`hEEj>
this.pageSize = pageSize; ZSWKVTi
} 'x/pV5[hQ
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publicint getTotalCount(){ W}^X;f
return totalCount; zsM3
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} D@.+B`bA
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publicvoid setTotalCount(int totalCount){ ~)ut"4
if(totalCount > 0){ VINb9W}G[
this.totalCount = totalCount; 8NP|>uaj
int count = totalCount / |.]sL0;4Z
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pageSize; mO#62e4C
if(totalCount % pageSize > 0) _#;UXAi
count++; M/<>'%sj
indexes = newint[count]; lqaOLZH
for(int i = 0; i < count; i++){ ,u.G6"<
indexes = pageSize * vG X
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} y}5:CZ
}else{ ULT,>S6r
this.totalCount = 0; t[=-4;
} y6#AL<W@=
} 2g0_[$[m
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publicint[] getIndexes(){ Cpg>5N~;L
return indexes; <rQ+ErDA
} QYB66g:
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publicvoid setIndexes(int[] indexes){ uv#."_Va
this.indexes = indexes; )\O;Rt(
} kg/<<RO
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publicint getStartIndex(){ C3k[ipCN
return startIndex; Q}zd!*
} 1@}s:
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publicvoid setStartIndex(int startIndex){ f3;.+hJ])
if(totalCount <= 0) 1r9.JS
this.startIndex = 0; zEBUR%9
elseif(startIndex >= totalCount) NQ3EjARZt
this.startIndex = indexes lEXER^6
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[indexes.length - 1]; Q0j4c
elseif(startIndex < 0) Crg@05Z
this.startIndex = 0; vRI0fDu
else{ !pJd^|4A]
this.startIndex = indexes
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[startIndex / pageSize]; 59k[A~)~
} XbaUmCuh
} cqd}.D
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publicint getNextIndex(){ z%lLbKSe
int nextIndex = getStartIndex() + i8nzPKF2$3
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pageSize; bCfw,V{sce
if(nextIndex >= totalCount) T8t_+|(
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return getStartIndex(); )&px[Dbx
else 3'jH,17lWV
return nextIndex; dTTC6?yPXf
} ]tsp}M@
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publicint getPreviousIndex(){ &x.n>O
int previousIndex = getStartIndex() - YQ$Wif:@(n
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pageSize; is6M{K3
if(previousIndex < 0) Sv>bU4LHf
return0; )RCva3Ul
else yM
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return previousIndex; zd0[f3~
} 38zG[c|X
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} GNX`~%3KYc
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抽象业务类 qBDhCE
java代码: .~Gt=F+`s
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/** W6&mXJ^3L
* Created on 2005-7-12 fN_Ilg)t?5
*/ ozUsp[W>
package com.javaeye.common.business; f=cj5T:[
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import java.io.Serializable; S2PPwCU
import java.util.List;
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import org.hibernate.Criteria; LUKt!I0l
import org.hibernate.HibernateException; L43]0k
import org.hibernate.Session;
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import org.hibernate.criterion.DetachedCriteria; p%#=OtkC
import org.hibernate.criterion.Projections; 8S#TOeQ
import S%IhpTSe6
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org.springframework.orm.hibernate3.HibernateCallback; 3R?6{.
import p/ au.mc
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org.springframework.orm.hibernate3.support.HibernateDaoS XtftG7r9S
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upport; 5J2tR6u-(
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import com.javaeye.common.util.PaginationSupport; \F8:6-
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public abstract class AbstractManager extends fl+dL#]
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HibernateDaoSupport { %T,cR>lw
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privateboolean cacheQueries = false; COFCa&m9c
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privateString queryCacheRegion; B#, TdP]/
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publicvoid setCacheQueries(boolean Z@gEJ^"yA"
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cacheQueries){ |0$7{nQ
this.cacheQueries = cacheQueries; `7
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} JrGY`6##p
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publicvoid setQueryCacheRegion(String xY@<