Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 L<ET"&b;4
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 7toDk$jJRg
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据这一功能,我设计了通用的抽象Bean基类和分页类支持,代码来 PI$K+}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 8QFg6#"O
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分页支持类: qW|_|%{U+
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java代码: %@Nu{?I
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package com.javaeye.common.util; Q?{^8?7
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import java.util.List; OH6-\U'.Z
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publicclass PaginationSupport { =nE^zY2m%
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publicfinalstaticint PAGESIZE = 30; IOOK[g.?h
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privateint pageSize = PAGESIZE; ! +XreCw
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privateList items; v8
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privateint totalCount; .._UI2MA
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privateint[] indexes = newint[0]; Oc%W_Gb7
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privateint startIndex = 0; U,7}VdO
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public PaginationSupport(List items, int nXfdf-
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totalCount){ *b\&R%6dR
setPageSize(PAGESIZE); z2[{3Kd*
setTotalCount(totalCount); cSYMnB
setItems(items); 5N:IH@
setStartIndex(0); $Ahe Vps@@
} G]O5irsV
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public PaginationSupport(List items, int [Lq9lw&
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totalCount, int startIndex){ ].Xh=7&2{
setPageSize(PAGESIZE); 1EA#c>I$
setTotalCount(totalCount); d VyT `
setItems(items); #N;McF;W
setStartIndex(startIndex); R 0YWe
} K#xL-
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public PaginationSupport(List items, int arN=OB
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totalCount, int pageSize, int startIndex){ w[OUGn'
setPageSize(pageSize); @z>DJ>htN
setTotalCount(totalCount); #O^%u,mJj
setItems(items); ~9n30j%]s
setStartIndex(startIndex); L"}tJM.d
} H7(D8.y )
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publicList getItems(){ z"f+;1
return items; vF1Fcp.@
} -9(pOwN
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publicvoid setItems(List items){ ]Wtg.y6;
this.items = items; I %|;M%B
} in `|.#
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publicint getPageSize(){ &1ZUMc
return pageSize; 'PWA
} @S1Z"%S
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publicvoid setPageSize(int pageSize){ 'zOB!QqA`v
this.pageSize = pageSize; HYl~)O>
} k5)a|
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publicint getTotalCount(){ (@V_47o
return totalCount; |!{ Y:f;
} `N8t2yF
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publicvoid setTotalCount(int totalCount){ B[9y<FB+
if(totalCount > 0){ IYv.~IQO
this.totalCount = totalCount; ch33+~Nn
int count = totalCount / $i%#fN
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pageSize; R5&<\RI0
if(totalCount % pageSize > 0) kLc@U~M
count++; R]3j6\
indexes = newint[count]; aNP\Q23D
for(int i = 0; i < count; i++){ d|>/eb.R
indexes = pageSize * `R!Q(rePx
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} WjOP2CVv|
}else{ $$i
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this.totalCount = 0; #n]K$k>
} [:+f Y[4==
} TjHt:%7.
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publicint[] getIndexes(){ C-XJe~
return indexes; 6q^\pJY%&7
} -kHJH><j
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publicvoid setIndexes(int[] indexes){ g'cVsO)S
this.indexes = indexes; $PRUzFZ
} _r>kR7A\{
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publicint getStartIndex(){ |K9*><P?)2
return startIndex; 9sI&d
} *7b?.{
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publicvoid setStartIndex(int startIndex){ u U%Z%O
if(totalCount <= 0) LW k/h1
this.startIndex = 0; W8F@nY
elseif(startIndex >= totalCount) sR/y|
this.startIndex = indexes 'x5p ?m
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[indexes.length - 1]; sf/m@425
elseif(startIndex < 0) TbLU[(m-n
this.startIndex = 0; ~'F.tB
else{ 4U~'Oa@p
this.startIndex = indexes <KfR)7I$0a
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[startIndex / pageSize]; W]XM<# ^^
} 2_ 1RJ
} [w!T
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publicint getNextIndex(){ q" EW*k+
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int nextIndex = getStartIndex() + e N v\ZR1
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pageSize; ;M~9Yr=1
if(nextIndex >= totalCount) Y>atJ
return getStartIndex();
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else 6lT< l zT
return nextIndex; 6TTu[*0NT
} oY0*2~sg
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publicint getPreviousIndex(){ c91^7@Xv
int previousIndex = getStartIndex() - %|D)U>o{
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pageSize; JY@bD:
if(previousIndex < 0) vG7Mk8mIr
return0; \Zh&[D!2
else ay|jq"a
return previousIndex; <B>hvuCoH
} w}#3 pU<<
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} W?"l6s
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抽象业务类 [+QyKyhTO
java代码: `wZ
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/** Ghc
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* Created on 2005-7-12 %?, 7!|Ls
*/ !#~KSO}zW2
package com.javaeye.common.business; ^$}O?y7O
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import java.io.Serializable; }V*?~.R
import java.util.List; #Hz9@H
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import org.hibernate.Criteria; v*0J6<
import org.hibernate.HibernateException; d2V\T+=
import org.hibernate.Session; A+GRTwj
import org.hibernate.criterion.DetachedCriteria; \ 4^zY'
import org.hibernate.criterion.Projections; b8Z_oN5!
import S(nQ?;9,
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org.springframework.orm.hibernate3.HibernateCallback; t- TUP>_
import wVFa51a)yy
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org.springframework.orm.hibernate3.support.HibernateDaoS tQRbNY#}Z
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upport; /W`CqJk-*.
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import com.javaeye.common.util.PaginationSupport; ]*'_a@h
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public abstract class AbstractManager extends o5 ~VT!'[
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HibernateDaoSupport { bq)1'beW
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privateboolean cacheQueries = false; ^*4#ZvpG2
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privateString queryCacheRegion; Pz[UAJ
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publicvoid setCacheQueries(boolean GF9[|).
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cacheQueries){ ^;h\#S[%
this.cacheQueries = cacheQueries; :\'1x
} .P7q)lj36h
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publicvoid setQueryCacheRegion(String _>]/. w2=
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queryCacheRegion){
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this.queryCacheRegion = vea{o35!
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queryCacheRegion; _
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} H! 5Ka#B
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publicvoid save(finalObject entity){ JP0aNu
getHibernateTemplate().save(entity); -^yc<%U
} G7|d$!%
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publicvoid persist(finalObject entity){ rp
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getHibernateTemplate().save(entity); rPBsr<k#5
} );AtFP0Y
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publicvoid update(finalObject entity){ jD"nEp-
getHibernateTemplate().update(entity); jtpHDS
} 1%vE 7a>{
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publicvoid delete(finalObject entity){ Gey-8
getHibernateTemplate().delete(entity); p/Q< VV
} V"(5U(v{~
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publicObject load(finalClass entity, l3BN,HNv+
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finalSerializable id){ s.rQiD
return getHibernateTemplate().load xzA!,75@U
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(entity, id); h$$JXf
} R[6R)#o
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publicObject get(finalClass entity, 'YGP42#
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finalSerializable id){ lH`c&LL-=!
return getHibernateTemplate().get "Dk@-Ac
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(entity, id); jg'"?KSU~
} D4(73
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publicList findAll(finalClass entity){ bZgo}`o%
return getHibernateTemplate().find("from %%n&z6w