Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 Dck/Ea
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 m]jA(
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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 IWE([<i}i[
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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 rDFrreQP
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分页支持类: SWrTM
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java代码: ?("O.<
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package com.javaeye.common.util; MT/jpx
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import java.util.List; Ql{#dcRx
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publicclass PaginationSupport { *duG/?>P
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publicfinalstaticint PAGESIZE = 30; TKnWhB/J
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privateint pageSize = PAGESIZE; eB~\~@
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privateList items; JwMRquQv
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privateint totalCount; Aits<0
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privateint[] indexes = newint[0]; <)ZQRE@
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privateint startIndex = 0; q=3>ij{v
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public PaginationSupport(List items, int n~629 &
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totalCount){ 4.,EKw3
setPageSize(PAGESIZE); :-{"9cgFR
setTotalCount(totalCount); Lip#uuuXXN
setItems(items); %gmx47
setStartIndex(0); $U[d#:]
} 1>e30Ri,g
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public PaginationSupport(List items, int 1]If<
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totalCount, int startIndex){ Xy(QK2|
setPageSize(PAGESIZE); O: :FB.k
setTotalCount(totalCount); J#`7!
setItems(items); 6SCjlaGW5
setStartIndex(startIndex); <.)=CK
} c';~bYZ
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public PaginationSupport(List items, int =>'8<"M5z
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totalCount, int pageSize, int startIndex){ ~m=GS[=
setPageSize(pageSize); M!6Fnj
setTotalCount(totalCount); >n,_Aj
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setItems(items); Q+1ot,R
setStartIndex(startIndex); ^\v]Ltd
} p&Qb&nWk<
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publicList getItems(){ |it*w\+M
return items; LGL;3EI
} +c_AAMe
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publicvoid setItems(List items){ ~k34#j:J65
this.items = items; \ZRII<k5)
} ()6%1zCO
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publicint getPageSize(){ tEL;,1
return pageSize; L<V20d9
} }4>u_)nt
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publicvoid setPageSize(int pageSize){ wwl,F=| Y
this.pageSize = pageSize; u[qy1M0
} x[t?hl=:
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publicint getTotalCount(){ Gxd/t#;
return totalCount; `&NFl'l1C
} XI`_PQco
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publicvoid setTotalCount(int totalCount){ I~l_ky|a !
if(totalCount > 0){ *wJ$U
this.totalCount = totalCount; /eHf8l
int count = totalCount / @zS/J,:v}
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pageSize; P{dR
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if(totalCount % pageSize > 0) &3/`cl[+
count++; 9-n]_AF`0
indexes = newint[count]; HZ<#H3_ix
for(int i = 0; i < count; i++){ )[hs#nKTh
indexes = pageSize * R}Zaz3( Hd
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} f #h0O3
}else{ KeyKLkg>
this.totalCount = 0; X:Y1g)|K
} `_vPElQXZ#
} Vc'p+e|(
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publicint[] getIndexes(){ m:Rx<E
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return indexes; 7eq.UyUxs
} RPa]VL1W
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publicvoid setIndexes(int[] indexes){ _$*-?*V&
this.indexes = indexes; 'tTlBf7#
} cV:Q(|QC
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publicint getStartIndex(){ T\wOGaCW
return startIndex; x75;-q
} 3=]/+{B
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publicvoid setStartIndex(int startIndex){ ruqE]Hx9(
if(totalCount <= 0) JK)|a@BtOT
this.startIndex = 0; j 1'H|4
elseif(startIndex >= totalCount) NHZMH!=4:n
this.startIndex = indexes crd|r."
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[indexes.length - 1]; rREev
elseif(startIndex < 0) ~(m6dPm$}m
this.startIndex = 0; 3>(~5
else{ WL%T nux
this.startIndex = indexes BCExhp
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[startIndex / pageSize]; *QW.#y>"j
} dY?l
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} /_fZ2$/
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publicint getNextIndex(){ :%Z)u:~':
int nextIndex = getStartIndex() + Ct/6<
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pageSize; FIn)O-<
if(nextIndex >= totalCount) ;$a|4_U$m
return getStartIndex(); l$BKE{rg
else 3!;o\bgK
return nextIndex; *y"|/_
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} BvlY\^
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publicint getPreviousIndex(){ \mN?5QCcE
int previousIndex = getStartIndex() - p38s&\-kEN
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pageSize; IKp(KlA
if(previousIndex < 0) 6w<p1qhW
return0; hQSJt[8My
else 5}NO~Xd<
return previousIndex; Cyv_(Oh?dv
} p*P0<01Z
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} UIQ=b;J9
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抽象业务类 <.7W:s,f=
java代码: f2|On6/
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/** 1?+)T%"
* Created on 2005-7-12 x^F2Ywp%
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package com.javaeye.common.business; Q[O U`
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import java.io.Serializable; /` x|-9
import java.util.List; D/{ Spw@
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import org.hibernate.Criteria; Qzk/oHs
import org.hibernate.HibernateException; b!37:V\#}
import org.hibernate.Session; X>jwjRK
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import org.hibernate.criterion.DetachedCriteria; Dc>)j s|"
import org.hibernate.criterion.Projections; r52,f%nlm
import FH H2
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org.springframework.orm.hibernate3.HibernateCallback; .+AO3~Dg
import }\ui}\
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org.springframework.orm.hibernate3.support.HibernateDaoS =TI|uD6T
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upport; d>4e9M"
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import com.javaeye.common.util.PaginationSupport; RZE:WE;5
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public abstract class AbstractManager extends @p2dXJeR<
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HibernateDaoSupport { p|%Y\!
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privateboolean cacheQueries = false; H"?-&>V-
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privateString queryCacheRegion; cfe[6N
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publicvoid setCacheQueries(boolean 1J*wW# e
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cacheQueries){ Zk;;~ESOU
this.cacheQueries = cacheQueries; <