Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 5al{[mi
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 [9^e
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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 `s $@6r$
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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 K gX)fj
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分页支持类: swA"_A8>u
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java代码: Yw<:I&
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package com.javaeye.common.util; gjV&X N
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import java.util.List; BoqW;SG$9
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publicclass PaginationSupport { mUbaR
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publicfinalstaticint PAGESIZE = 30; JGe;$5|q8
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privateint pageSize = PAGESIZE; ![V-
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privateList items; V2.K*CpZ7
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privateint totalCount; KI{u:Lbi
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privateint[] indexes = newint[0]; G`z48
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privateint startIndex = 0; HChewrUAn
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public PaginationSupport(List items, int AUK7a
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totalCount){ Nvi14,q/
setPageSize(PAGESIZE); [% jg;m
setTotalCount(totalCount); U PC& O
setItems(items); a lR}|ez
setStartIndex(0); "n:9JqPb
} {IVqV6:
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public PaginationSupport(List items, int AN;?`AM;
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totalCount, int startIndex){ O\w%E@9Fh
setPageSize(PAGESIZE); lV?SvXe
setTotalCount(totalCount); P<hqr;
setItems(items); i469<^A
setStartIndex(startIndex); OW>U5 \q
} )
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public PaginationSupport(List items, int 9pgct6BO
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totalCount, int pageSize, int startIndex){ [D)A+
setPageSize(pageSize); -=RXhE_{
setTotalCount(totalCount); x>@UqUJV
setItems(items); r0sd_@Oj
setStartIndex(startIndex); rcK*",>
} .UcS4JU
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publicList getItems(){ it,%T)2H
return items; %>.v[d1c
} cZYX[.oIB
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publicvoid setItems(List items){ ^c5(MR7LD
this.items = items; L*Y}pO
} h^s}8y
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publicint getPageSize(){ |'.SOm9)*
return pageSize; MS b{ve_
} q\,H9/.0k
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publicvoid setPageSize(int pageSize){ QZ6M,\
this.pageSize = pageSize; y8L:nnSj
} YJ9_cA'A
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publicint getTotalCount(){ DW-LkgfA
return totalCount; =4I361oMf
} =$'Zmb
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publicvoid setTotalCount(int totalCount){ ?Cws25G
if(totalCount > 0){ :J"e{|g',
this.totalCount = totalCount; f|`{PP`\
int count = totalCount / Cn"N5(i
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pageSize; %~h'#S2X(
if(totalCount % pageSize > 0) UJZa1p@L
count++; IP >An8+
indexes = newint[count]; @iaN@`5I6s
for(int i = 0; i < count; i++){ LDNpEX~
indexes = pageSize * Qknd ^%
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} `A'*x]l
}else{ 1eJ\CdI
this.totalCount = 0; LJ)3!Q/:
} sq^,l6es>
} KGJB.<Be
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publicint[] getIndexes(){ nQ+{1 C
return indexes; P8EGd}2{8
} OS,$}I[`8
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publicvoid setIndexes(int[] indexes){ jPd<h{js
this.indexes = indexes; MG<~{Y84}
} *iR`mZb
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publicint getStartIndex(){ ,lUo@+
return startIndex; i^>
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} qq/Cn4fN8
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publicvoid setStartIndex(int startIndex){ qm '$R3g
if(totalCount <= 0) `+gF|o9
this.startIndex = 0; 6nwO:?1o9
elseif(startIndex >= totalCount) =FKB)#N
this.startIndex = indexes 0uvL,hF
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[indexes.length - 1]; V^ :\/EU
elseif(startIndex < 0) zf!c
this.startIndex = 0; k"U4E
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else{ 94R+S-|P
this.startIndex = indexes =f["M=)ZJ
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[startIndex / pageSize]; A gPg0(G
} ks;%f34
} c1/x,1LnMf
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publicint getNextIndex(){ Ac54VN
int nextIndex = getStartIndex() + l ghzd6
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pageSize; ;^]A@WN6_
if(nextIndex >= totalCount) Q_.Fw\l$`
return getStartIndex(); &u-Bu;G.e
else j&.BbcE45
return nextIndex; Z.pw!mu"
} @_3$(*n$~
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publicint getPreviousIndex(){ Z"Oa5V6[A
int previousIndex = getStartIndex() - }c%y0)fL
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pageSize; `@7tWX0
if(previousIndex < 0) @XC97kGWp
return0; Phu|
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else ]?{lQ0vw'w
return previousIndex; 46Nf|~
} g/p
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抽象业务类 U^BXCu1km
java代码: k=2l9C3Z
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/** D*'M^k|1
* Created on 2005-7-12 zB"
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*/ EZQ+HECpK
package com.javaeye.common.business; ~PW}sN6ppG
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import java.io.Serializable; '8kjTf#g<l
import java.util.List; Sx9:$"3.X
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import org.hibernate.Criteria; vr;Br-8
import org.hibernate.HibernateException; J?quYlS
import org.hibernate.Session; kah3Uhr~
import org.hibernate.criterion.DetachedCriteria;
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import org.hibernate.criterion.Projections; MI'l4<>u
import =z1o}ga=EA
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org.springframework.orm.hibernate3.HibernateCallback; 1idjX"'
import CU1\C*
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org.springframework.orm.hibernate3.support.HibernateDaoS i z>y u[|
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upport; G4%M$LJh
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import com.javaeye.common.util.PaginationSupport; bL],KW;Q
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public abstract class AbstractManager extends X#I`(iHY
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HibernateDaoSupport { *R\/#Y|
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privateboolean cacheQueries = false; _q$LrAT
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privateString queryCacheRegion; GHC?Tp
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publicvoid setCacheQueries(boolean |5B,cB_
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cacheQueries){ 4:e q{n
this.cacheQueries = cacheQueries; Y:!/4GF
} xCp+<|1
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publicvoid setQueryCacheRegion(String MRg\FR2>1
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queryCacheRegion){ v7<S F
this.queryCacheRegion = }d3N`TT
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queryCacheRegion; #w,WwL!
} oz0n$`O$/
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publicvoid save(finalObject entity){ )Z8"uRTb0
getHibernateTemplate().save(entity); opcR~tg@r
} DPS1GO*
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publicvoid persist(finalObject entity){ H")N_BB
getHibernateTemplate().save(entity); /=YqjZTCq
} yg-FJ/
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publicvoid update(finalObject entity){ HEB/\
getHibernateTemplate().update(entity); mB^I@oZ*
} %V <F<
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publicvoid delete(finalObject entity){ ^0x.'G?
getHibernateTemplate().delete(entity); :
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} '6.>Wdd
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publicObject load(finalClass entity, &J;H@d||
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finalSerializable id){ N(_
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return getHibernateTemplate().load /nY).lSH
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(entity, id); BA1MGh
} J)$&