Hibernate3 提供了DetachedCriteria,使得我们可以在Web层构造 NJRk##Z
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detachedCriteria,然后调用业务层Bean,进行动态条件查询,根 9ePG-=5I
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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 Cz` !j
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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 ]3nka$wA*
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分页支持类: (e.?). e
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java代码: VC$,Y
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package com.javaeye.common.util; %&w 8E[
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import java.util.List; CobMagPhr
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publicclass PaginationSupport { HtY0=r
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publicfinalstaticint PAGESIZE = 30; 4IfOvAN%
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privateint pageSize = PAGESIZE; JWQd/
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privateList items; }(tuBJ9
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privateint totalCount; i;Y3pF0%P
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privateint[] indexes = newint[0]; 7 uy?%5
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privateint startIndex = 0; 9NzK1V0X
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public PaginationSupport(List items, int uT1xvXfqP
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totalCount){ TgC8EcLr
setPageSize(PAGESIZE); %*:X
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setTotalCount(totalCount); "^gV.
setItems(items); JdYmUM|K/c
setStartIndex(0); xbUL./uj
} Ei$?]~
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public PaginationSupport(List items, int M8Tj;ATr
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totalCount, int startIndex){ 6>L)
setPageSize(PAGESIZE); _.}1 Y,Q
setTotalCount(totalCount); =@ SJyW
setItems(items); @$:T]N3m
setStartIndex(startIndex); %KjvV<f-a
} 1UHlA8w7Q
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public PaginationSupport(List items, int uGo tX b
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totalCount, int pageSize, int startIndex){ heizO",8.&
setPageSize(pageSize); bh
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setTotalCount(totalCount); 9sQ#v-+Yx
setItems(items); !PySYY
setStartIndex(startIndex); 4hQ.RO
} 5u:{lcC.X
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publicList getItems(){ t%k1=Ow5i
return items; &gv{LJd5b
} Q`0 k=<
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publicvoid setItems(List items){ $E >)
this.items = items; =cP7"\
} )NjxKSiU@
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publicint getPageSize(){ pBR9)T\n
return pageSize; G+k~k/D 6
} :nLhg$wMs
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publicvoid setPageSize(int pageSize){ bMCy=5
this.pageSize = pageSize; >Nho`m(
} H)5V \
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publicint getTotalCount(){ Vi:<W0:
return totalCount; I_aSC 4
} S-Z s
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publicvoid setTotalCount(int totalCount){ h ycdk1SN
if(totalCount > 0){ 13f@Ox$
this.totalCount = totalCount; s9 \HjK*+
int count = totalCount / ^{l^Z
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pageSize; m1\+~*i
if(totalCount % pageSize > 0) lDU@Q(V#}<
count++; ==^9_a^
indexes = newint[count]; $TK<~3`
for(int i = 0; i < count; i++){ Z{p)rscX
indexes = pageSize * ,bU8S\8
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} $KAOJc4<
}else{ sSdnH_;&
this.totalCount = 0; \[CPI`yQe
} s<hl>vY_'
} O&vE 5%x
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publicint[] getIndexes(){ y$h.k"x`
return indexes; =,HxtPJ
} G Ch]5\
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publicvoid setIndexes(int[] indexes){ wiE'6CM
this.indexes = indexes; N#!**Q 0
} Zk .V
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publicint getStartIndex(){ wx]r{
return startIndex; Q}qw`L1
} K|Kc.
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publicvoid setStartIndex(int startIndex){ |9&bkojo
if(totalCount <= 0) J 6%CF2
this.startIndex = 0; t_\;G~O9-M
elseif(startIndex >= totalCount) a"Q> K7K
this.startIndex = indexes =o? Q0
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[indexes.length - 1]; -]$=.0 l
elseif(startIndex < 0) 6vL+qOd x
this.startIndex = 0; 7LZA!3
else{ Ee0}Xv
this.startIndex = indexes <{"Jy)Uf
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[startIndex / pageSize]; T:?01?m
} }(-2a*Z;Y
} ;mtv
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publicint getNextIndex(){ E!SxO~
int nextIndex = getStartIndex() + \7elqX`.yY
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pageSize; *v6 j7<H
if(nextIndex >= totalCount) ?$Tp|<tx#
return getStartIndex(); JA(M'&q4
else "H"4]m1Wc
return nextIndex; }bM=)eUfX
} _G1C5nkDl4
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publicint getPreviousIndex(){ -!JnyD
int previousIndex = getStartIndex() - 8*\PWl
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pageSize; ouO<un
if(previousIndex < 0) =(%+S<}
return0; ZlEH3-Zv
else Z<M?_<3
return previousIndex; W2-1oS~ma
} JrhDqyk*
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抽象业务类 N sNk
java代码: W:V:Ej7 h
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/** 6'YsSde".
* Created on 2005-7-12 B^yA+&3HI
*/ f 3t&Bcw$
package com.javaeye.common.business; J=@D]I*3
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import java.io.Serializable; {iRXK
import java.util.List; hNWZ1r~_
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import org.hibernate.Criteria; :,]*~Nl
import org.hibernate.HibernateException; F-SD4a
import org.hibernate.Session; +#Q\;;FNP
import org.hibernate.criterion.DetachedCriteria; <{xU.zp'
import org.hibernate.criterion.Projections; dnXre*rhz
import /CW
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org.springframework.orm.hibernate3.HibernateCallback; Z&w/JP?
import o{n)w6P{R,
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org.springframework.orm.hibernate3.support.HibernateDaoS vC1D}=Fp
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upport; :e|[gEA
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import com.javaeye.common.util.PaginationSupport;
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public abstract class AbstractManager extends gp`H>Sn.|
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HibernateDaoSupport { 6~#$bp^-
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privateboolean cacheQueries = false; I0v$3BQ4
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privateString queryCacheRegion; Kx[u9MD
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publicvoid setCacheQueries(boolean WhU-^`[*
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cacheQueries){ D;RZE
this.cacheQueries = cacheQueries; E/[<} ./
} E?@batIrf
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publicvoid setQueryCacheRegion(String VUD ?iv7
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queryCacheRegion){ 6L\?+=X
this.queryCacheRegion = :fW\!o8Z2
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queryCacheRegion; %M/rpEE"b%
} `VB]4i}u
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publicvoid save(finalObject entity){ a`:ag~op@&
getHibernateTemplate().save(entity); 4PVkKP'/
} Q,1TD2)h
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publicvoid persist(finalObject entity){ Q:/BC= ~
getHibernateTemplate().save(entity); >gqd
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} G"~%[k
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publicvoid update(finalObject entity){ mV58&SZT
getHibernateTemplate().update(entity); Mr8r(LGY
} 'aFj yY?%
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publicvoid delete(finalObject entity){ GdxMHnn=
getHibernateTemplate().delete(entity); !x, ;&
} /J-:?./
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publicObject load(finalClass entity, IQz:DJ
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finalSerializable id){ ~gjREl,+D#
return getHibernateTemplate().load tmCm54
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(entity, id); (zm5
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} AhjUFz
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publicObject get(finalClass entity, \8 I>^4t'/
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finalSerializable id){ c2,1d`
return getHibernateTemplate().get RnA>oKc
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(entity, id); *i}Nb*Z3
} TvEN0RV2
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publicList findAll(finalClass entity){ GCf3'u
return getHibernateTemplate().find("from /p=9"?
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" + entity.getName()); kg>Ymo.
} ?Q~6\xA
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