Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 vn*K\,
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 p2(ha3PW
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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 ] 7[#K^
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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 E$z- |-{>
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分页支持类: X]9<1[f
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java代码: q {}5wM
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package com.javaeye.common.util; LmyaC2
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import java.util.List; P<Z` 8a[
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publicclass PaginationSupport { |wJdp,q R
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publicfinalstaticint PAGESIZE = 30; sqpo5~
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privateint pageSize = PAGESIZE; \IC^z
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privateList items; IhK
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privateint totalCount; Q=%W-
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privateint[] indexes = newint[0]; E@otV6Wk[@
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privateint startIndex = 0; D=vw0Q_3Y3
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public PaginationSupport(List items, int l
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totalCount){ ;=IJHk1&
setPageSize(PAGESIZE); <sm"3qs"_
setTotalCount(totalCount); vO$cF*
setItems(items); m;4ti9
setStartIndex(0); ceJ#>Rj
} "9^b1UH<
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public PaginationSupport(List items, int bh5P98s
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totalCount, int startIndex){ 6wu`;>
setPageSize(PAGESIZE); >`&2]Wc)
setTotalCount(totalCount); )N~ p4kp
setItems(items); j7:r8? G
setStartIndex(startIndex); \z2y?"\?
} I+twI&GS
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public PaginationSupport(List items, int 2!}F+^8'P
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totalCount, int pageSize, int startIndex){ @=AQr4&
setPageSize(pageSize); Vb#a ,t
setTotalCount(totalCount); At<MY`ka
setItems(items); 'OTZ&;7{
setStartIndex(startIndex); ^Os }sJ*5S
} Qp[
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publicList getItems(){ E0 VAhN3G\
return items; u59l)8=
} {R63n
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publicvoid setItems(List items){ mzM95yQ^Z
this.items = items; %U}6(~
} "|J6*s
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publicint getPageSize(){ z]hRc8g}d
return pageSize; ?mC'ZYQI
} kmTYRl
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publicvoid setPageSize(int pageSize){ V.$tq
this.pageSize = pageSize; ?5ZvvAi
} &0[L2x}7
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publicint getTotalCount(){ ~a3u['B
return totalCount; ~vpF|4Zn5
} *2~WP'~PQd
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publicvoid setTotalCount(int totalCount){ -Wmb
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if(totalCount > 0){ a%HNz_ro
this.totalCount = totalCount; b"#S92R+
int count = totalCount / s&o9LdL
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pageSize; Ebj0 {ZL
if(totalCount % pageSize > 0) 1 Vc_jYO@
count++; ECM#J28D
indexes = newint[count]; VFF5Tp
for(int i = 0; i < count; i++){ j+-`P5
indexes = pageSize * 2/t; }pw8
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} A9SL|9Q
}else{ n2-+.9cY
this.totalCount = 0; ami>Pp
} OW=3t#"7Kp
} g8'8"9:xC
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publicint[] getIndexes(){ DFZ@q=ZT
return indexes; w0nbL^f
} !D{z. KO
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publicvoid setIndexes(int[] indexes){ =ZU!i0
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this.indexes = indexes; W\Sc ak>
} `Nvhp]E
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publicint getStartIndex(){ GwDOxH'
return startIndex; NWiDNK[VE}
} W!.FnM5x
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publicvoid setStartIndex(int startIndex){ Ca?w"m~h
if(totalCount <= 0) W[`ybGR<
this.startIndex = 0; (>u1O V
elseif(startIndex >= totalCount) ND?"1/s
this.startIndex = indexes E]&N'+T
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[indexes.length - 1]; 2P'Vp7f6 Y
elseif(startIndex < 0) &@|? %
this.startIndex = 0; paN=I=:*M
else{ &-^*D%9
this.startIndex = indexes (DvGA I
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[startIndex / pageSize]; ?xMTO
} !.V_?aYi8
} O"TVxP:
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publicint getNextIndex(){ Ufi#y<dP
int nextIndex = getStartIndex() + @,Dnl v|?
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pageSize; n{<@-6
if(nextIndex >= totalCount) AIQ
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return getStartIndex(); {U3jJ#K
else \pK&gdw
return nextIndex; ?Q=(?yR0]
} am.d^'
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publicint getPreviousIndex(){ 4mp)v*z
int previousIndex = getStartIndex() - CpX[8>&osD
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pageSize; qgEzK
if(previousIndex < 0) r^"sZk#
return0; fM]nP4K`
else G='`*_$
return previousIndex; .^F&6'h1H
} U{lf$
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} DtGkhq;
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抽象业务类 hF^JSCDz l
java代码: >zJk G9a
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/** XZ$g~r
* Created on 2005-7-12 `'r]Oe
*/ JF}i=}
package com.javaeye.common.business; ?Y\WSI?i
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import java.io.Serializable; !(Y|Vm'
import java.util.List; :u=y7[I
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import org.hibernate.Criteria; j&A9
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import org.hibernate.HibernateException; Fv/{)H<:y
import org.hibernate.Session; (qc<'$o
import org.hibernate.criterion.DetachedCriteria; oliVaavj
import org.hibernate.criterion.Projections; 13 JG[,w
import ;2fzA<RkK
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org.springframework.orm.hibernate3.HibernateCallback; u\xrC\Ka
import G5 )"%G.
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org.springframework.orm.hibernate3.support.HibernateDaoS Jq>5:"jZ0
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upport; :nnch?J_
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import com.javaeye.common.util.PaginationSupport; L=!h`k
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public abstract class AbstractManager extends *n@rPr-
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HibernateDaoSupport { SU7,uxF
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privateboolean cacheQueries = false; A~?)g!tS<
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privateString queryCacheRegion; !.@:t`w
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publicvoid setCacheQueries(boolean BUh(pS:
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cacheQueries){ "Gqas bX
this.cacheQueries = cacheQueries; *E|3Vy{4
} :N<o<